use go1.11 with go mod

This commit is contained in:
deepzz0
2018-08-25 18:29:00 +08:00
parent 1d54ff3ac5
commit c6a2439c54
1912 changed files with 102 additions and 498482 deletions

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@@ -9,9 +9,8 @@ branches: # 限定项目分支
only:
- /^v[0-9](\.[0-9]){2}(-rc[1-9])?$/
install:
- curl https://glide.sh/get | sh # 安装glide包管理
- go mod download
script:
- glide up
- GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build # 编译版本
- docker build -t registry.cn-hangzhou.aliyuncs.com/deepzz/eiblog . # 构建镜像
after_success:

105
glide.lock generated
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@@ -1,105 +0,0 @@
hash: c733fa4abeda21b59b001578b37a168bd33038d337b61198cc5fd94be8bfdf77
updated: 2018-01-13T18:22:28.620808+08:00
imports:
- name: github.com/boj/redistore
version: 4562487a4bee9a7c272b72bfaeda4917d0a47ab9
- name: github.com/deepzz0/logd
version: f91dd8c6316f0e156e93895a96739b67577b6a63
- name: github.com/eiblog/blackfriday
version: c0ec111761ae784fe31cc076f2fa0e2d2216d623
- name: github.com/eiblog/utils
version: e8f16268dae939f920ddc55f1c9e46a97a5e3559
subpackages:
- logd
- mgo
- tmpl
- uuid
- name: github.com/garyburd/redigo
version: d1ed5c67e5794de818ea85e6b522fda02623a484
subpackages:
- internal
- redis
- name: github.com/gin-gonic/autotls
version: 8ca25fbde72bb72a00466215b94b489c71fcb815
- name: github.com/gin-gonic/contrib
version: 88aede40372d4bcb11e45168a8c30d99e44cf617
subpackages:
- sessions
- name: github.com/gin-gonic/gin
version: e2212d40c62a98b388a5eb48ecbdcf88534688ba
subpackages:
- binding
- render
- name: github.com/golang/protobuf
version: 2402d76f3d41f928c7902a765dfc872356dd3aad
subpackages:
- proto
- name: github.com/gorilla/context
version: 08b5f424b9271eedf6f9f0ce86cb9396ed337a42
- name: github.com/gorilla/securecookie
version: e59506cc896acb7f7bf732d4fdf5e25f7ccd8983
- name: github.com/gorilla/sessions
version: a3acf13e802c358d65f249324d14ed24aac11370
- name: github.com/manucorporat/sse
version: ee05b128a739a0fb76c7ebd3ae4810c1de808d6d
- name: github.com/mattn/go-isatty
version: 6ca4dbf54d38eea1a992b3c722a76a5d1c4cb25c
- name: github.com/qiniu/api.v7
version: b7c7d6a2ce0aff8e5e7d14c39c3cde867efa1123
subpackages:
- auth/qbox
- conf
- storage
- name: github.com/qiniu/x
version: f512abcf45ab4e2ba0fd4784c57b53d495997d66
subpackages:
- bytes.v7
- bytes.v7/seekable
- ctype.v7
- rpc.v7
- xlog.v7
- name: github.com/shurcooL/sanitized_anchor_name
version: 86672fcb3f950f35f2e675df2240550f2a50762f
- name: golang.org/x/crypto
version: 13931e22f9e72ea58bb73048bc752b48c6d4d4ac
subpackages:
- acme
- acme/autocert
- name: golang.org/x/net
version: f315505cf3349909cdf013ea56690da34e96a451
subpackages:
- context
- name: golang.org/x/sys
version: 810d7000345868fc619eb81f46307107118f4ae1
subpackages:
- unix
- name: gopkg.in/go-playground/validator.v8
version: c193cecd124b5cc722d7ee5538e945bdb3348435
- name: gopkg.in/mgo.v2
version: 3f83fa5005286a7fe593b055f0d7771a7dce4655
subpackages:
- bson
- internal/json
- internal/sasl
- internal/scram
- name: gopkg.in/yaml.v2
version: d670f9405373e636a5a2765eea47fac0c9bc91a4
- name: qiniupkg.com/x
version: 946c4a16076d6d98aeb78619e2bd4012357f7228
subpackages:
- bytes.v7
- log.v7
- reqid.v7
testImports:
- name: github.com/davecgh/go-spew
version: 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d
subpackages:
- spew
- name: github.com/pmezard/go-difflib
version: 792786c7400a136282c1664665ae0a8db921c6c2
subpackages:
- difflib
- name: github.com/stretchr/testify
version: 69483b4bd14f5845b5a1e55bca19e954e827f1d0
subpackages:
- assert

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@@ -1,27 +0,0 @@
package: github.com/eiblog/eiblog
import:
- package: github.com/deepzz0/logd
- package: github.com/eiblog/blackfriday
- package: github.com/eiblog/utils
subpackages:
- logd
- mgo
- tmpl
- uuid
- package: github.com/gin-gonic/autotls
- package: github.com/gin-gonic/contrib
subpackages:
- sessions
- package: github.com/gin-gonic/gin
- package: github.com/qiniu/api.v7
subpackages:
- auth/qbox
- storage
- package: gopkg.in/mgo.v2
subpackages:
- bson
- package: gopkg.in/yaml.v2
testImport:
- package: github.com/stretchr/testify
subpackages:
- assert

33
go.mod Normal file
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@@ -0,0 +1,33 @@
module github.com/eiblog/eiblog
require (
github.com/boj/redistore v0.0.0-20180825063928-0920d8493e7f // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/deepzz0/logd v0.0.0-20171206094927-f91dd8c6316f
github.com/eiblog/blackfriday v0.0.0-20161010144836-c0ec111761ae
github.com/eiblog/utils v0.0.0-20180209055746-a56f1b5e9c3c
github.com/gin-contrib/sse v0.0.0-20170109093832-22d885f9ecc7 // indirect
github.com/gin-gonic/autotls v0.0.0-20180426091246-be87bd5ef97b
github.com/gin-gonic/contrib v0.0.0-20180614032058-39cfb9727134
github.com/gin-gonic/gin v1.3.0
github.com/golang/protobuf v1.2.0 // indirect
github.com/json-iterator/go v0.0.0-20180806060727-1624edc4454b // indirect
github.com/mattn/go-isatty v0.0.3 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v0.0.0-20180718012357-94122c33edd3 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/qiniu/api.v7 v7.2.4+incompatible
github.com/qiniu/x v7.0.8+incompatible // indirect
github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 // indirect
github.com/stretchr/testify v1.2.2
github.com/ugorji/go v1.1.1 // indirect
golang.org/x/crypto v0.0.0-20180820150726-614d502a4dac // indirect
golang.org/x/net v0.0.0-20180824152047-4bcd98cce591 // indirect
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect
golang.org/x/sys v0.0.0-20180824143301-4910a1d54f87 // indirect
gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
gopkg.in/go-playground/validator.v8 v8.18.2 // indirect
gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce // indirect
gopkg.in/yaml.v2 v2.2.1
qiniupkg.com/x v7.0.8+incompatible // indirect
)

68
go.sum Normal file
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@@ -0,0 +1,68 @@
github.com/boj/redistore v0.0.0-20180825063928-0920d8493e7f h1:rvqqJygTOcUSBlPi+3PjaBMlq0pvlpqoR+ZqbwxsVP4=
github.com/boj/redistore v0.0.0-20180825063928-0920d8493e7f/go.mod h1:+RTT1BOk5P97fT2CiHkbFQwkK3mjsFAP6zCYV2aXtjw=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/deepzz0/logd v0.0.0-20171206094927-f91dd8c6316f h1:hjWy8ptp0ggYgv/3A8dixSB9KTRgDcZH2D3Ap5hrwOs=
github.com/deepzz0/logd v0.0.0-20171206094927-f91dd8c6316f/go.mod h1:8jMj6ab9czIU5udq3ovaK9/5sCIyQ1JWteFMn8w2QRI=
github.com/eiblog/blackfriday v0.0.0-20161010144836-c0ec111761ae h1:V6YC640Gs5jEUYfCimyuXsTW5gzNcIEESG4MGmOJCtA=
github.com/eiblog/blackfriday v0.0.0-20161010144836-c0ec111761ae/go.mod h1:HzHqTCGEAkSSzBM3shBvQHsHRQYUvjNOIC4mHipZ6tI=
github.com/eiblog/utils v0.0.0-20180209055746-a56f1b5e9c3c h1:iTojaGfteYN44kmydHUSgTlie7/CBsOQGHiH5xaogCU=
github.com/eiblog/utils v0.0.0-20180209055746-a56f1b5e9c3c/go.mod h1:mZHWnipRp41yw/rti2DgpbMiBE5i6ifqg7PKooEwRh4=
github.com/gin-contrib/sse v0.0.0-20170109093832-22d885f9ecc7 h1:AzN37oI0cOS+cougNAV9szl6CVoj2RYwzS3DpUQNtlY=
github.com/gin-contrib/sse v0.0.0-20170109093832-22d885f9ecc7/go.mod h1:VJ0WA2NBN22VlZ2dKZQPAPnyWw5XTlK1KymzLKsr59s=
github.com/gin-gonic/autotls v0.0.0-20180426091246-be87bd5ef97b h1:dm/NYytoj7p8Jc6zMvyRz3PCQrTTCXnVRvEzyBcM890=
github.com/gin-gonic/autotls v0.0.0-20180426091246-be87bd5ef97b/go.mod h1:vwfeXwKgEIWq63oVfwaBjoByS4dZzYbHHROHjV4IjNY=
github.com/gin-gonic/contrib v0.0.0-20180614032058-39cfb9727134 h1:xgqFZVwmmtWiuq5LUZ/wa34hJR2Dm9NZAH+Cj9a7Hu0=
github.com/gin-gonic/contrib v0.0.0-20180614032058-39cfb9727134/go.mod h1:iqneQ2Df3omzIVTkIfn7c1acsVnMGiSLn4XF5Blh3Yg=
github.com/gin-gonic/gin v1.3.0 h1:kCmZyPklC0gVdL728E6Aj20uYBJV93nj/TkwBTKhFbs=
github.com/gin-gonic/gin v1.3.0/go.mod h1:7cKuhb5qV2ggCFctp2fJQ+ErvciLZrIeoOSOm6mUr7Y=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/gomodule/redigo v2.0.0+incompatible h1:K/R+8tc58AaqLkqG2Ol3Qk+DR/TlNuhuh457pBFPtt0=
github.com/gomodule/redigo v2.0.0+incompatible/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
github.com/gorilla/sessions v1.1.1 h1:YMDmfaK68mUixINzY/XjscuJ47uXFWSSHzFbBQM0PrE=
github.com/gorilla/sessions v1.1.1/go.mod h1:8KCfur6+4Mqcc6S0FEfKuN15Vl5MgXW92AE8ovaJD0w=
github.com/json-iterator/go v0.0.0-20180806060727-1624edc4454b h1:X61dhFTE1Au92SvyF8HyAwdjWqiSdfBgFR7wTxC0+uU=
github.com/json-iterator/go v0.0.0-20180806060727-1624edc4454b/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/mattn/go-isatty v0.0.3 h1:ns/ykhmWi7G9O+8a448SecJU3nSMBXJfqQkl0upE1jI=
github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/reflect2 v0.0.0-20180718012357-94122c33edd3 h1:YFBuDro+e1UCqlJpDWGucQaO/UNhBX1GlS8Du0GNfPw=
github.com/modern-go/reflect2 v0.0.0-20180718012357-94122c33edd3/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/qiniu/api.v7 v7.2.4+incompatible h1:AtooPoOzz93zhThX7XN/H1jALug+Ent/JisGgtNzwAs=
github.com/qiniu/api.v7 v7.2.4+incompatible/go.mod h1:V8/EzlTgLN6q0s0CJmg/I81ytsvldSF22F7h6MI02+c=
github.com/qiniu/x v7.0.8+incompatible h1:P4LASsfwJY7SoZ13dwqBwGhZh7HKU8cdFVCUkmz0gZ8=
github.com/qiniu/x v7.0.8+incompatible/go.mod h1:KpRKWYG/GaidPQVpoQ2Cvuvtts3gYnoo2PftgdmAiU4=
github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 h1:/vdW8Cb7EXrkqWGufVMES1OH2sU9gKVb2n9/1y5NMBY=
github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/ugorji/go v1.1.1 h1:gmervu+jDMvXTbcHQ0pd2wee85nEoE0BsVyEuzkfK8w=
github.com/ugorji/go v1.1.1/go.mod h1:hnLbHMwcvSihnDhEfx2/BzKp2xb0Y+ErdfYcrs9tkJQ=
golang.org/x/crypto v0.0.0-20180820150726-614d502a4dac h1:7d7lG9fHOLdL6jZPtnV4LpI41SbohIJ1Atq7U991dMg=
golang.org/x/crypto v0.0.0-20180820150726-614d502a4dac/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/net v0.0.0-20180824152047-4bcd98cce591 h1:4S2XUgvg3hUNTvxI307qkFPb9zKHG3Nf9TXFzX/DZZI=
golang.org/x/net v0.0.0-20180824152047-4bcd98cce591/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180824143301-4910a1d54f87 h1:GqwDwfvIpC33dK9bA1fD+JiDUNsuAiQiEkpHqUKze4o=
golang.org/x/sys v0.0.0-20180824143301-4910a1d54f87/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/go-playground/assert.v1 v1.2.1 h1:xoYuJVE7KT85PYWrN730RguIQO0ePzVRfFMXadIrXTM=
gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
gopkg.in/go-playground/validator.v8 v8.18.2 h1:lFB4DoMU6B626w8ny76MV7VX6W2VHct2GVOI3xgiMrQ=
gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce h1:xcEWjVhvbDy+nHP67nPDDpbYrY+ILlfndk4bRioVHaU=
gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
qiniupkg.com/x v7.0.8+incompatible h1:Ek0ZVi5IyaWUAFkJbPRiqlh34xDM4uoKw7KqdpankvU=
qiniupkg.com/x v7.0.8+incompatible/go.mod h1:6sLxR5IZ03vMaRAQAY/5MvzofeoBIjO4XE0Njv6V1ms=

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@@ -1,2 +0,0 @@
.DS_Store

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@@ -1,19 +0,0 @@
Copyright (c) 2013 Brian Jones
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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@@ -1,52 +0,0 @@
# redistore
[![Build Status](https://drone.io/github.com/boj/redistore/status.png)](https://drone.io/github.com/boj/redistore/latest)
A session store backend for [gorilla/sessions](http://www.gorillatoolkit.org/pkg/sessions) - [src](https://github.com/gorilla/sessions).
## Requirements
Depends on the [Redigo](https://github.com/garyburd/redigo) Redis library.
## Installation
go get gopkg.in/boj/redistore.v1
## Documentation
Available on [godoc.org](http://www.godoc.org/gopkg.in/boj/redistore.v1).
See http://www.gorillatoolkit.org/pkg/sessions for full documentation on underlying interface.
### Example
``` go
// Fetch new store.
store, err := NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
if err != nil {
panic(err)
}
defer store.Close()
// Get a session.
session, err = store.Get(req, "session-key")
if err != nil {
log.Error(err.Error())
}
// Add a value.
session.Values["foo"] = "bar"
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
// Delete session.
session.Options.MaxAge = -1
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
// Change session storage configuration for MaxAge = 10 days.
store.SetMaxAge(10 * 24 * 3600)
```

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/*
Package redistore is a session store backend for gorilla/sessions
*/
package redistore

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@@ -1,361 +0,0 @@
// Copyright 2012 Brian "bojo" Jones. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package redistore
import (
"bytes"
"encoding/base32"
"encoding/gob"
"encoding/json"
"errors"
"fmt"
"net/http"
"strings"
"time"
"github.com/garyburd/redigo/redis"
"github.com/gorilla/securecookie"
"github.com/gorilla/sessions"
)
// Amount of time for cookies/redis keys to expire.
var sessionExpire = 86400 * 30
// SessionSerializer provides an interface hook for alternative serializers
type SessionSerializer interface {
Deserialize(d []byte, ss *sessions.Session) error
Serialize(ss *sessions.Session) ([]byte, error)
}
// JSONSerializer encode the session map to JSON.
type JSONSerializer struct{}
// Serialize to JSON. Will err if there are unmarshalable key values
func (s JSONSerializer) Serialize(ss *sessions.Session) ([]byte, error) {
m := make(map[string]interface{}, len(ss.Values))
for k, v := range ss.Values {
ks, ok := k.(string)
if !ok {
err := fmt.Errorf("Non-string key value, cannot serialize session to JSON: %v", k)
fmt.Printf("redistore.JSONSerializer.serialize() Error: %v", err)
return nil, err
}
m[ks] = v
}
return json.Marshal(m)
}
// Deserialize back to map[string]interface{}
func (s JSONSerializer) Deserialize(d []byte, ss *sessions.Session) error {
m := make(map[string]interface{})
err := json.Unmarshal(d, &m)
if err != nil {
fmt.Printf("redistore.JSONSerializer.deserialize() Error: %v", err)
return err
}
for k, v := range m {
ss.Values[k] = v
}
return nil
}
// GobSerializer uses gob package to encode the session map
type GobSerializer struct{}
// Serialize using gob
func (s GobSerializer) Serialize(ss *sessions.Session) ([]byte, error) {
buf := new(bytes.Buffer)
enc := gob.NewEncoder(buf)
err := enc.Encode(ss.Values)
if err == nil {
return buf.Bytes(), nil
}
return nil, err
}
// Deserialize back to map[interface{}]interface{}
func (s GobSerializer) Deserialize(d []byte, ss *sessions.Session) error {
dec := gob.NewDecoder(bytes.NewBuffer(d))
return dec.Decode(&ss.Values)
}
// RediStore stores sessions in a redis backend.
type RediStore struct {
Pool *redis.Pool
Codecs []securecookie.Codec
Options *sessions.Options // default configuration
DefaultMaxAge int // default Redis TTL for a MaxAge == 0 session
maxLength int
keyPrefix string
serializer SessionSerializer
}
// SetMaxLength sets RediStore.maxLength if the `l` argument is greater or equal 0
// maxLength restricts the maximum length of new sessions to l.
// If l is 0 there is no limit to the size of a session, use with caution.
// The default for a new RediStore is 4096. Redis allows for max.
// value sizes of up to 512MB (http://redis.io/topics/data-types)
// Default: 4096,
func (s *RediStore) SetMaxLength(l int) {
if l >= 0 {
s.maxLength = l
}
}
// SetKeyPrefix set the prefix
func (s *RediStore) SetKeyPrefix(p string) {
s.keyPrefix = p
}
// SetSerializer sets the serializer
func (s *RediStore) SetSerializer(ss SessionSerializer) {
s.serializer = ss
}
// SetMaxAge restricts the maximum age, in seconds, of the session record
// both in database and a browser. This is to change session storage configuration.
// If you want just to remove session use your session `s` object and change it's
// `Options.MaxAge` to -1, as specified in
// http://godoc.org/github.com/gorilla/sessions#Options
//
// Default is the one provided by this package value - `sessionExpire`.
// Set it to 0 for no restriction.
// Because we use `MaxAge` also in SecureCookie crypting algorithm you should
// use this function to change `MaxAge` value.
func (s *RediStore) SetMaxAge(v int) {
var c *securecookie.SecureCookie
var ok bool
s.Options.MaxAge = v
for i := range s.Codecs {
if c, ok = s.Codecs[i].(*securecookie.SecureCookie); ok {
c.MaxAge(v)
} else {
fmt.Printf("Can't change MaxAge on codec %v\n", s.Codecs[i])
}
}
}
func dial(network, address, password string) (redis.Conn, error) {
c, err := redis.Dial(network, address)
if err != nil {
return nil, err
}
if password != "" {
if _, err := c.Do("AUTH", password); err != nil {
c.Close()
return nil, err
}
}
return c, err
}
// NewRediStore returns a new RediStore.
// size: maximum number of idle connections.
func NewRediStore(size int, network, address, password string, keyPairs ...[]byte) (*RediStore, error) {
return NewRediStoreWithPool(&redis.Pool{
MaxIdle: size,
IdleTimeout: 240 * time.Second,
TestOnBorrow: func(c redis.Conn, t time.Time) error {
_, err := c.Do("PING")
return err
},
Dial: func() (redis.Conn, error) {
return dial(network, address, password)
},
}, keyPairs...)
}
func dialWithDB(network, address, password, DB string) (redis.Conn, error) {
c, err := dial(network, address, password)
if err != nil {
return nil, err
}
if _, err := c.Do("SELECT", DB); err != nil {
c.Close()
return nil, err
}
return c, err
}
// NewRediStoreWithDB - like NewRedisStore but accepts `DB` parameter to select
// redis DB instead of using the default one ("0")
func NewRediStoreWithDB(size int, network, address, password, DB string, keyPairs ...[]byte) (*RediStore, error) {
return NewRediStoreWithPool(&redis.Pool{
MaxIdle: size,
IdleTimeout: 240 * time.Second,
TestOnBorrow: func(c redis.Conn, t time.Time) error {
_, err := c.Do("PING")
return err
},
Dial: func() (redis.Conn, error) {
return dialWithDB(network, address, password, DB)
},
}, keyPairs...)
}
// NewRediStoreWithPool instantiates a RediStore with a *redis.Pool passed in.
func NewRediStoreWithPool(pool *redis.Pool, keyPairs ...[]byte) (*RediStore, error) {
rs := &RediStore{
// http://godoc.org/github.com/garyburd/redigo/redis#Pool
Pool: pool,
Codecs: securecookie.CodecsFromPairs(keyPairs...),
Options: &sessions.Options{
Path: "/",
MaxAge: sessionExpire,
},
DefaultMaxAge: 60 * 20, // 20 minutes seems like a reasonable default
maxLength: 4096,
keyPrefix: "session_",
serializer: GobSerializer{},
}
_, err := rs.ping()
return rs, err
}
// Close closes the underlying *redis.Pool
func (s *RediStore) Close() error {
return s.Pool.Close()
}
// Get returns a session for the given name after adding it to the registry.
//
// See gorilla/sessions FilesystemStore.Get().
func (s *RediStore) Get(r *http.Request, name string) (*sessions.Session, error) {
return sessions.GetRegistry(r).Get(s, name)
}
// New returns a session for the given name without adding it to the registry.
//
// See gorilla/sessions FilesystemStore.New().
func (s *RediStore) New(r *http.Request, name string) (*sessions.Session, error) {
var (
err error
ok bool
)
session := sessions.NewSession(s, name)
// make a copy
options := *s.Options
session.Options = &options
session.IsNew = true
if c, errCookie := r.Cookie(name); errCookie == nil {
err = securecookie.DecodeMulti(name, c.Value, &session.ID, s.Codecs...)
if err == nil {
ok, err = s.load(session)
session.IsNew = !(err == nil && ok) // not new if no error and data available
}
}
return session, err
}
// Save adds a single session to the response.
func (s *RediStore) Save(r *http.Request, w http.ResponseWriter, session *sessions.Session) error {
// Marked for deletion.
if session.Options.MaxAge < 0 {
if err := s.delete(session); err != nil {
return err
}
http.SetCookie(w, sessions.NewCookie(session.Name(), "", session.Options))
} else {
// Build an alphanumeric key for the redis store.
if session.ID == "" {
session.ID = strings.TrimRight(base32.StdEncoding.EncodeToString(securecookie.GenerateRandomKey(32)), "=")
}
if err := s.save(session); err != nil {
return err
}
encoded, err := securecookie.EncodeMulti(session.Name(), session.ID, s.Codecs...)
if err != nil {
return err
}
http.SetCookie(w, sessions.NewCookie(session.Name(), encoded, session.Options))
}
return nil
}
// Delete removes the session from redis, and sets the cookie to expire.
//
// WARNING: This method should be considered deprecated since it is not exposed via the gorilla/sessions interface.
// Set session.Options.MaxAge = -1 and call Save instead. - July 18th, 2013
func (s *RediStore) Delete(r *http.Request, w http.ResponseWriter, session *sessions.Session) error {
conn := s.Pool.Get()
defer conn.Close()
if _, err := conn.Do("DEL", s.keyPrefix+session.ID); err != nil {
return err
}
// Set cookie to expire.
options := *session.Options
options.MaxAge = -1
http.SetCookie(w, sessions.NewCookie(session.Name(), "", &options))
// Clear session values.
for k := range session.Values {
delete(session.Values, k)
}
return nil
}
// ping does an internal ping against a server to check if it is alive.
func (s *RediStore) ping() (bool, error) {
conn := s.Pool.Get()
defer conn.Close()
data, err := conn.Do("PING")
if err != nil || data == nil {
return false, err
}
return (data == "PONG"), nil
}
// save stores the session in redis.
func (s *RediStore) save(session *sessions.Session) error {
b, err := s.serializer.Serialize(session)
if err != nil {
return err
}
if s.maxLength != 0 && len(b) > s.maxLength {
return errors.New("SessionStore: the value to store is too big")
}
conn := s.Pool.Get()
defer conn.Close()
if err = conn.Err(); err != nil {
return err
}
age := session.Options.MaxAge
if age == 0 {
age = s.DefaultMaxAge
}
_, err = conn.Do("SETEX", s.keyPrefix+session.ID, age, b)
return err
}
// load reads the session from redis.
// returns true if there is a sessoin data in DB
func (s *RediStore) load(session *sessions.Session) (bool, error) {
conn := s.Pool.Get()
defer conn.Close()
if err := conn.Err(); err != nil {
return false, err
}
data, err := conn.Do("GET", s.keyPrefix+session.ID)
if err != nil {
return false, err
}
if data == nil {
return false, nil // no data was associated with this key
}
b, err := redis.Bytes(data, err)
if err != nil {
return false, err
}
return true, s.serializer.Deserialize(b, session)
}
// delete removes keys from redis if MaxAge<0
func (s *RediStore) delete(session *sessions.Session) error {
conn := s.Pool.Get()
defer conn.Close()
if _, err := conn.Do("DEL", s.keyPrefix+session.ID); err != nil {
return err
}
return nil
}

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@@ -1,404 +0,0 @@
package redistore
import (
"bytes"
"encoding/base64"
"encoding/gob"
"net/http"
"net/http/httptest"
"testing"
"github.com/gorilla/sessions"
)
// ----------------------------------------------------------------------------
// ResponseRecorder
// ----------------------------------------------------------------------------
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// ResponseRecorder is an implementation of http.ResponseWriter that
// records its mutations for later inspection in tests.
type ResponseRecorder struct {
Code int // the HTTP response code from WriteHeader
HeaderMap http.Header // the HTTP response headers
Body *bytes.Buffer // if non-nil, the bytes.Buffer to append written data to
Flushed bool
}
// NewRecorder returns an initialized ResponseRecorder.
func NewRecorder() *ResponseRecorder {
return &ResponseRecorder{
HeaderMap: make(http.Header),
Body: new(bytes.Buffer),
}
}
// DefaultRemoteAddr is the default remote address to return in RemoteAddr if
// an explicit DefaultRemoteAddr isn't set on ResponseRecorder.
const DefaultRemoteAddr = "1.2.3.4"
// Header returns the response headers.
func (rw *ResponseRecorder) Header() http.Header {
return rw.HeaderMap
}
// Write always succeeds and writes to rw.Body, if not nil.
func (rw *ResponseRecorder) Write(buf []byte) (int, error) {
if rw.Body != nil {
rw.Body.Write(buf)
}
if rw.Code == 0 {
rw.Code = http.StatusOK
}
return len(buf), nil
}
// WriteHeader sets rw.Code.
func (rw *ResponseRecorder) WriteHeader(code int) {
rw.Code = code
}
// Flush sets rw.Flushed to true.
func (rw *ResponseRecorder) Flush() {
rw.Flushed = true
}
// ----------------------------------------------------------------------------
type FlashMessage struct {
Type int
Message string
}
func TestRediStore(t *testing.T) {
var req *http.Request
var rsp *ResponseRecorder
var hdr http.Header
var err error
var ok bool
var cookies []string
var session *sessions.Session
var flashes []interface{}
// Copyright 2012 The Gorilla Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Round 1 ----------------------------------------------------------------
// RedisStore
store, err := NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
if err != nil {
t.Fatal(err.Error())
}
defer store.Close()
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
rsp = NewRecorder()
// Get a session.
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Get a flash.
flashes = session.Flashes()
if len(flashes) != 0 {
t.Errorf("Expected empty flashes; Got %v", flashes)
}
// Add some flashes.
session.AddFlash("foo")
session.AddFlash("bar")
// Custom key.
session.AddFlash("baz", "custom_key")
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
hdr = rsp.Header()
cookies, ok = hdr["Set-Cookie"]
if !ok || len(cookies) != 1 {
t.Fatalf("No cookies. Header:", hdr)
}
// Round 2 ----------------------------------------------------------------
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
req.Header.Add("Cookie", cookies[0])
rsp = NewRecorder()
// Get a session.
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Check all saved values.
flashes = session.Flashes()
if len(flashes) != 2 {
t.Fatalf("Expected flashes; Got %v", flashes)
}
if flashes[0] != "foo" || flashes[1] != "bar" {
t.Errorf("Expected foo,bar; Got %v", flashes)
}
flashes = session.Flashes()
if len(flashes) != 0 {
t.Errorf("Expected dumped flashes; Got %v", flashes)
}
// Custom key.
flashes = session.Flashes("custom_key")
if len(flashes) != 1 {
t.Errorf("Expected flashes; Got %v", flashes)
} else if flashes[0] != "baz" {
t.Errorf("Expected baz; Got %v", flashes)
}
flashes = session.Flashes("custom_key")
if len(flashes) != 0 {
t.Errorf("Expected dumped flashes; Got %v", flashes)
}
// RediStore specific
// Set MaxAge to -1 to mark for deletion.
session.Options.MaxAge = -1
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
// Round 3 ----------------------------------------------------------------
// Custom type
// RedisStore
store, err = NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
if err != nil {
t.Fatal(err.Error())
}
defer store.Close()
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
rsp = NewRecorder()
// Get a session.
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Get a flash.
flashes = session.Flashes()
if len(flashes) != 0 {
t.Errorf("Expected empty flashes; Got %v", flashes)
}
// Add some flashes.
session.AddFlash(&FlashMessage{42, "foo"})
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
hdr = rsp.Header()
cookies, ok = hdr["Set-Cookie"]
if !ok || len(cookies) != 1 {
t.Fatalf("No cookies. Header:", hdr)
}
// Round 4 ----------------------------------------------------------------
// Custom type
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
req.Header.Add("Cookie", cookies[0])
rsp = NewRecorder()
// Get a session.
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Check all saved values.
flashes = session.Flashes()
if len(flashes) != 1 {
t.Fatalf("Expected flashes; Got %v", flashes)
}
custom := flashes[0].(FlashMessage)
if custom.Type != 42 || custom.Message != "foo" {
t.Errorf("Expected %#v, got %#v", FlashMessage{42, "foo"}, custom)
}
// RediStore specific
// Set MaxAge to -1 to mark for deletion.
session.Options.MaxAge = -1
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
// Round 5 ----------------------------------------------------------------
// RediStore Delete session (deprecated)
//req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
//req.Header.Add("Cookie", cookies[0])
//rsp = NewRecorder()
//// Get a session.
//if session, err = store.Get(req, "session-key"); err != nil {
// t.Fatalf("Error getting session: %v", err)
//}
//// Delete session.
//if err = store.Delete(req, rsp, session); err != nil {
// t.Fatalf("Error deleting session: %v", err)
//}
//// Get a flash.
//flashes = session.Flashes()
//if len(flashes) != 0 {
// t.Errorf("Expected empty flashes; Got %v", flashes)
//}
//hdr = rsp.Header()
//cookies, ok = hdr["Set-Cookie"]
//if !ok || len(cookies) != 1 {
// t.Fatalf("No cookies. Header:", hdr)
//}
// Round 6 ----------------------------------------------------------------
// RediStore change MaxLength of session
store, err = NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
if err != nil {
t.Fatal(err.Error())
}
req, err = http.NewRequest("GET", "http://www.example.com", nil)
if err != nil {
t.Fatal("failed to create request", err)
}
w := httptest.NewRecorder()
session, err = store.New(req, "my session")
session.Values["big"] = make([]byte, base64.StdEncoding.DecodedLen(4096*2))
err = session.Save(req, w)
if err == nil {
t.Fatal("expected an error, got nil")
}
store.SetMaxLength(4096 * 3) // A bit more than the value size to account for encoding overhead.
err = session.Save(req, w)
if err != nil {
t.Fatal("failed to Save:", err)
}
// Round 7 ----------------------------------------------------------------
// RedisStoreWithDB
store, err = NewRediStoreWithDB(10, "tcp", ":6379", "", "1", []byte("secret-key"))
if err != nil {
t.Fatal(err.Error())
}
defer store.Close()
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
rsp = NewRecorder()
// Get a session. Using the same key as previously, but on different DB
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Get a flash.
flashes = session.Flashes()
if len(flashes) != 0 {
t.Errorf("Expected empty flashes; Got %v", flashes)
}
// Add some flashes.
session.AddFlash("foo")
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
hdr = rsp.Header()
cookies, ok = hdr["Set-Cookie"]
if !ok || len(cookies) != 1 {
t.Fatalf("No cookies. Header:", hdr)
}
// Get a session.
req.Header.Add("Cookie", cookies[0])
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Check all saved values.
flashes = session.Flashes()
if len(flashes) != 1 {
t.Fatalf("Expected flashes; Got %v", flashes)
}
if flashes[0] != "foo" {
t.Errorf("Expected foo,bar; Got %v", flashes)
}
// Round 8 ----------------------------------------------------------------
// JSONSerializer
// RedisStore
store, err = NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
store.SetSerializer(JSONSerializer{})
if err != nil {
t.Fatal(err.Error())
}
defer store.Close()
req, _ = http.NewRequest("GET", "http://localhost:8080/", nil)
rsp = NewRecorder()
// Get a session.
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Get a flash.
flashes = session.Flashes()
if len(flashes) != 0 {
t.Errorf("Expected empty flashes; Got %v", flashes)
}
// Add some flashes.
session.AddFlash("foo")
// Save.
if err = sessions.Save(req, rsp); err != nil {
t.Fatalf("Error saving session: %v", err)
}
hdr = rsp.Header()
cookies, ok = hdr["Set-Cookie"]
if !ok || len(cookies) != 1 {
t.Fatalf("No cookies. Header:", hdr)
}
// Get a session.
req.Header.Add("Cookie", cookies[0])
if session, err = store.Get(req, "session-key"); err != nil {
t.Fatalf("Error getting session: %v", err)
}
// Check all saved values.
flashes = session.Flashes()
if len(flashes) != 1 {
t.Fatalf("Expected flashes; Got %v", flashes)
}
if flashes[0] != "foo" {
t.Errorf("Expected foo,bar; Got %v", flashes)
}
}
func TestPingGoodPort(t *testing.T) {
store, _ := NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
defer store.Close()
ok, err := store.ping()
if err != nil {
t.Error(err.Error())
}
if !ok {
t.Error("Expected server to PONG")
}
}
func TestPingBadPort(t *testing.T) {
store, _ := NewRediStore(10, "tcp", ":6378", "", []byte("secret-key"))
defer store.Close()
_, err := store.ping()
if err == nil {
t.Error("Expected error")
}
}
func ExampleRediStore() {
// RedisStore
store, err := NewRediStore(10, "tcp", ":6379", "", []byte("secret-key"))
if err != nil {
panic(err)
}
defer store.Close()
}
func init() {
gob.Register(FlashMessage{})
}

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@@ -1,22 +0,0 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe

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@@ -1,11 +0,0 @@
language: go
go: 1.2
install:
- go get -v code.google.com/p/go.tools/cmd/cover
script:
- go test -v -tags=disableunsafe ./spew
- go test -v -tags=testcgo ./spew -covermode=count -coverprofile=profile.cov
after_success:
- go get -v github.com/mattn/goveralls
- export PATH=$PATH:$HOME/gopath/bin
- goveralls -coverprofile=profile.cov -service=travis-ci

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@@ -1,13 +0,0 @@
Copyright (c) 2012-2013 Dave Collins <dave@davec.name>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

View File

@@ -1,194 +0,0 @@
go-spew
=======
[![Build Status](https://travis-ci.org/davecgh/go-spew.png?branch=master)]
(https://travis-ci.org/davecgh/go-spew) [![Coverage Status]
(https://coveralls.io/repos/davecgh/go-spew/badge.png?branch=master)]
(https://coveralls.io/r/davecgh/go-spew?branch=master)
Go-spew implements a deep pretty printer for Go data structures to aid in
debugging. A comprehensive suite of tests with 100% test coverage is provided
to ensure proper functionality. See `test_coverage.txt` for the gocov coverage
report. Go-spew is licensed under the liberal ISC license, so it may be used in
open source or commercial projects.
If you're interested in reading about how this package came to life and some
of the challenges involved in providing a deep pretty printer, there is a blog
post about it
[here](https://blog.cyphertite.com/go-spew-a-journey-into-dumping-go-data-structures/).
## Documentation
[![GoDoc](https://godoc.org/github.com/davecgh/go-spew/spew?status.png)]
(http://godoc.org/github.com/davecgh/go-spew/spew)
Full `go doc` style documentation for the project can be viewed online without
installing this package by using the excellent GoDoc site here:
http://godoc.org/github.com/davecgh/go-spew/spew
You can also view the documentation locally once the package is installed with
the `godoc` tool by running `godoc -http=":6060"` and pointing your browser to
http://localhost:6060/pkg/github.com/davecgh/go-spew/spew
## Installation
```bash
$ go get -u github.com/davecgh/go-spew/spew
```
## Quick Start
Add this import line to the file you're working in:
```Go
import "github.com/davecgh/go-spew/spew"
```
To dump a variable with full newlines, indentation, type, and pointer
information use Dump, Fdump, or Sdump:
```Go
spew.Dump(myVar1, myVar2, ...)
spew.Fdump(someWriter, myVar1, myVar2, ...)
str := spew.Sdump(myVar1, myVar2, ...)
```
Alternatively, if you would prefer to use format strings with a compacted inline
printing style, use the convenience wrappers Printf, Fprintf, etc with %v (most
compact), %+v (adds pointer addresses), %#v (adds types), or %#+v (adds types
and pointer addresses):
```Go
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
```
## Debugging a Web Application Example
Here is an example of how you can use `spew.Sdump()` to help debug a web application. Please be sure to wrap your output using the `html.EscapeString()` function for safety reasons. You should also only use this debugging technique in a development environment, never in production.
```Go
package main
import (
"fmt"
"html"
"net/http"
"github.com/davecgh/go-spew/spew"
)
func handler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html")
fmt.Fprintf(w, "Hi there, %s!", r.URL.Path[1:])
fmt.Fprintf(w, "<!--\n" + html.EscapeString(spew.Sdump(w)) + "\n-->")
}
func main() {
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
```
## Sample Dump Output
```
(main.Foo) {
unexportedField: (*main.Bar)(0xf84002e210)({
flag: (main.Flag) flagTwo,
data: (uintptr) <nil>
}),
ExportedField: (map[interface {}]interface {}) {
(string) "one": (bool) true
}
}
([]uint8) {
00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
00000020 31 32 |12|
}
```
## Sample Formatter Output
Double pointer to a uint8:
```
%v: <**>5
%+v: <**>(0xf8400420d0->0xf8400420c8)5
%#v: (**uint8)5
%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
```
Pointer to circular struct with a uint8 field and a pointer to itself:
```
%v: <*>{1 <*><shown>}
%+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
%#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
```
## Configuration Options
Configuration of spew is handled by fields in the ConfigState type. For
convenience, all of the top-level functions use a global state available via the
spew.Config global.
It is also possible to create a ConfigState instance that provides methods
equivalent to the top-level functions. This allows concurrent configuration
options. See the ConfigState documentation for more details.
```
* Indent
String to use for each indentation level for Dump functions.
It is a single space by default. A popular alternative is "\t".
* MaxDepth
Maximum number of levels to descend into nested data structures.
There is no limit by default.
* DisableMethods
Disables invocation of error and Stringer interface methods.
Method invocation is enabled by default.
* DisablePointerMethods
Disables invocation of error and Stringer interface methods on types
which only accept pointer receivers from non-pointer variables. This option
relies on access to the unsafe package, so it will not have any effect when
running in environments without access to the unsafe package such as Google
App Engine or with the "disableunsafe" build tag specified.
Pointer method invocation is enabled by default.
* ContinueOnMethod
Enables recursion into types after invoking error and Stringer interface
methods. Recursion after method invocation is disabled by default.
* SortKeys
Specifies map keys should be sorted before being printed. Use
this to have a more deterministic, diffable output. Note that
only native types (bool, int, uint, floats, uintptr and string)
and types which implement error or Stringer interfaces are supported,
with other types sorted according to the reflect.Value.String() output
which guarantees display stability. Natural map order is used by
default.
* SpewKeys
SpewKeys specifies that, as a last resort attempt, map keys should be
spewed to strings and sorted by those strings. This is only considered
if SortKeys is true.
```
## Unsafe Package Dependency
This package relies on the unsafe package to perform some of the more advanced
features, however it also supports a "limited" mode which allows it to work in
environments where the unsafe package is not available. By default, it will
operate in this mode on Google App Engine. The "disableunsafe" build tag may
also be specified to force the package to build without using the unsafe
package.
## License
Go-spew is licensed under the liberal ISC License.

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@@ -1,22 +0,0 @@
#!/bin/sh
# This script uses gocov to generate a test coverage report.
# The gocov tool my be obtained with the following command:
# go get github.com/axw/gocov/gocov
#
# It will be installed to $GOPATH/bin, so ensure that location is in your $PATH.
# Check for gocov.
if ! type gocov >/dev/null 2>&1; then
echo >&2 "This script requires the gocov tool."
echo >&2 "You may obtain it with the following command:"
echo >&2 "go get github.com/axw/gocov/gocov"
exit 1
fi
# Only run the cgo tests if gcc is installed.
if type gcc >/dev/null 2>&1; then
(cd spew && gocov test -tags testcgo | gocov report)
else
(cd spew && gocov test | gocov report)
fi

View File

@@ -1,151 +0,0 @@
// Copyright (c) 2015 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is not running on Google App Engine and "-tags disableunsafe"
// is not added to the go build command line.
// +build !appengine,!disableunsafe
package spew
import (
"reflect"
"unsafe"
)
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = false
// ptrSize is the size of a pointer on the current arch.
ptrSize = unsafe.Sizeof((*byte)(nil))
)
var (
// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
// internal reflect.Value fields. These values are valid before golang
// commit ecccf07e7f9d which changed the format. The are also valid
// after commit 82f48826c6c7 which changed the format again to mirror
// the original format. Code in the init function updates these offsets
// as necessary.
offsetPtr = uintptr(ptrSize)
offsetScalar = uintptr(0)
offsetFlag = uintptr(ptrSize * 2)
// flagKindWidth and flagKindShift indicate various bits that the
// reflect package uses internally to track kind information.
//
// flagRO indicates whether or not the value field of a reflect.Value is
// read-only.
//
// flagIndir indicates whether the value field of a reflect.Value is
// the actual data or a pointer to the data.
//
// These values are valid before golang commit 90a7c3c86944 which
// changed their positions. Code in the init function updates these
// flags as necessary.
flagKindWidth = uintptr(5)
flagKindShift = uintptr(flagKindWidth - 1)
flagRO = uintptr(1 << 0)
flagIndir = uintptr(1 << 1)
)
func init() {
// Older versions of reflect.Value stored small integers directly in the
// ptr field (which is named val in the older versions). Versions
// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
// scalar for this purpose which unfortunately came before the flag
// field, so the offset of the flag field is different for those
// versions.
//
// This code constructs a new reflect.Value from a known small integer
// and checks if the size of the reflect.Value struct indicates it has
// the scalar field. When it does, the offsets are updated accordingly.
vv := reflect.ValueOf(0xf00)
if unsafe.Sizeof(vv) == (ptrSize * 4) {
offsetScalar = ptrSize * 2
offsetFlag = ptrSize * 3
}
// Commit 90a7c3c86944 changed the flag positions such that the low
// order bits are the kind. This code extracts the kind from the flags
// field and ensures it's the correct type. When it's not, the flag
// order has been changed to the newer format, so the flags are updated
// accordingly.
upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
upfv := *(*uintptr)(upf)
flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
flagKindShift = 0
flagRO = 1 << 5
flagIndir = 1 << 6
// Commit adf9b30e5594 modified the flags to separate the
// flagRO flag into two bits which specifies whether or not the
// field is embedded. This causes flagIndir to move over a bit
// and means that flagRO is the combination of either of the
// original flagRO bit and the new bit.
//
// This code detects the change by extracting what used to be
// the indirect bit to ensure it's set. When it's not, the flag
// order has been changed to the newer format, so the flags are
// updated accordingly.
if upfv&flagIndir == 0 {
flagRO = 3 << 5
flagIndir = 1 << 7
}
}
}
// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
// the typical safety restrictions preventing access to unaddressable and
// unexported data. It works by digging the raw pointer to the underlying
// value out of the protected value and generating a new unprotected (unsafe)
// reflect.Value to it.
//
// This allows us to check for implementations of the Stringer and error
// interfaces to be used for pretty printing ordinarily unaddressable and
// inaccessible values such as unexported struct fields.
func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
indirects := 1
vt := v.Type()
upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
if rvf&flagIndir != 0 {
vt = reflect.PtrTo(v.Type())
indirects++
} else if offsetScalar != 0 {
// The value is in the scalar field when it's not one of the
// reference types.
switch vt.Kind() {
case reflect.Uintptr:
case reflect.Chan:
case reflect.Func:
case reflect.Map:
case reflect.Ptr:
case reflect.UnsafePointer:
default:
upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
offsetScalar)
}
}
pv := reflect.NewAt(vt, upv)
rv = pv
for i := 0; i < indirects; i++ {
rv = rv.Elem()
}
return rv
}

View File

@@ -1,37 +0,0 @@
// Copyright (c) 2015 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when either the code is running on Google App Engine or "-tags disableunsafe"
// is added to the go build command line.
// +build appengine disableunsafe
package spew
import "reflect"
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = true
)
// unsafeReflectValue typically converts the passed reflect.Value into a one
// that bypasses the typical safety restrictions preventing access to
// unaddressable and unexported data. However, doing this relies on access to
// the unsafe package. This is a stub version which simply returns the passed
// reflect.Value when the unsafe package is not available.
func unsafeReflectValue(v reflect.Value) reflect.Value {
return v
}

View File

@@ -1,341 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"reflect"
"sort"
"strconv"
)
// Some constants in the form of bytes to avoid string overhead. This mirrors
// the technique used in the fmt package.
var (
panicBytes = []byte("(PANIC=")
plusBytes = []byte("+")
iBytes = []byte("i")
trueBytes = []byte("true")
falseBytes = []byte("false")
interfaceBytes = []byte("(interface {})")
commaNewlineBytes = []byte(",\n")
newlineBytes = []byte("\n")
openBraceBytes = []byte("{")
openBraceNewlineBytes = []byte("{\n")
closeBraceBytes = []byte("}")
asteriskBytes = []byte("*")
colonBytes = []byte(":")
colonSpaceBytes = []byte(": ")
openParenBytes = []byte("(")
closeParenBytes = []byte(")")
spaceBytes = []byte(" ")
pointerChainBytes = []byte("->")
nilAngleBytes = []byte("<nil>")
maxNewlineBytes = []byte("<max depth reached>\n")
maxShortBytes = []byte("<max>")
circularBytes = []byte("<already shown>")
circularShortBytes = []byte("<shown>")
invalidAngleBytes = []byte("<invalid>")
openBracketBytes = []byte("[")
closeBracketBytes = []byte("]")
percentBytes = []byte("%")
precisionBytes = []byte(".")
openAngleBytes = []byte("<")
closeAngleBytes = []byte(">")
openMapBytes = []byte("map[")
closeMapBytes = []byte("]")
lenEqualsBytes = []byte("len=")
capEqualsBytes = []byte("cap=")
)
// hexDigits is used to map a decimal value to a hex digit.
var hexDigits = "0123456789abcdef"
// catchPanic handles any panics that might occur during the handleMethods
// calls.
func catchPanic(w io.Writer, v reflect.Value) {
if err := recover(); err != nil {
w.Write(panicBytes)
fmt.Fprintf(w, "%v", err)
w.Write(closeParenBytes)
}
}
// handleMethods attempts to call the Error and String methods on the underlying
// type the passed reflect.Value represents and outputes the result to Writer w.
//
// It handles panics in any called methods by catching and displaying the error
// as the formatted value.
func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
// We need an interface to check if the type implements the error or
// Stringer interface. However, the reflect package won't give us an
// interface on certain things like unexported struct fields in order
// to enforce visibility rules. We use unsafe, when it's available,
// to bypass these restrictions since this package does not mutate the
// values.
if !v.CanInterface() {
if UnsafeDisabled {
return false
}
v = unsafeReflectValue(v)
}
// Choose whether or not to do error and Stringer interface lookups against
// the base type or a pointer to the base type depending on settings.
// Technically calling one of these methods with a pointer receiver can
// mutate the value, however, types which choose to satisify an error or
// Stringer interface with a pointer receiver should not be mutating their
// state inside these interface methods.
if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
v = unsafeReflectValue(v)
}
if v.CanAddr() {
v = v.Addr()
}
// Is it an error or Stringer?
switch iface := v.Interface().(type) {
case error:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.Error()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.Error()))
return true
case fmt.Stringer:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.String()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.String()))
return true
}
return false
}
// printBool outputs a boolean value as true or false to Writer w.
func printBool(w io.Writer, val bool) {
if val {
w.Write(trueBytes)
} else {
w.Write(falseBytes)
}
}
// printInt outputs a signed integer value to Writer w.
func printInt(w io.Writer, val int64, base int) {
w.Write([]byte(strconv.FormatInt(val, base)))
}
// printUint outputs an unsigned integer value to Writer w.
func printUint(w io.Writer, val uint64, base int) {
w.Write([]byte(strconv.FormatUint(val, base)))
}
// printFloat outputs a floating point value using the specified precision,
// which is expected to be 32 or 64bit, to Writer w.
func printFloat(w io.Writer, val float64, precision int) {
w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
}
// printComplex outputs a complex value using the specified float precision
// for the real and imaginary parts to Writer w.
func printComplex(w io.Writer, c complex128, floatPrecision int) {
r := real(c)
w.Write(openParenBytes)
w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
i := imag(c)
if i >= 0 {
w.Write(plusBytes)
}
w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
w.Write(iBytes)
w.Write(closeParenBytes)
}
// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
// prefix to Writer w.
func printHexPtr(w io.Writer, p uintptr) {
// Null pointer.
num := uint64(p)
if num == 0 {
w.Write(nilAngleBytes)
return
}
// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
buf := make([]byte, 18)
// It's simpler to construct the hex string right to left.
base := uint64(16)
i := len(buf) - 1
for num >= base {
buf[i] = hexDigits[num%base]
num /= base
i--
}
buf[i] = hexDigits[num]
// Add '0x' prefix.
i--
buf[i] = 'x'
i--
buf[i] = '0'
// Strip unused leading bytes.
buf = buf[i:]
w.Write(buf)
}
// valuesSorter implements sort.Interface to allow a slice of reflect.Value
// elements to be sorted.
type valuesSorter struct {
values []reflect.Value
strings []string // either nil or same len and values
cs *ConfigState
}
// newValuesSorter initializes a valuesSorter instance, which holds a set of
// surrogate keys on which the data should be sorted. It uses flags in
// ConfigState to decide if and how to populate those surrogate keys.
func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
vs := &valuesSorter{values: values, cs: cs}
if canSortSimply(vs.values[0].Kind()) {
return vs
}
if !cs.DisableMethods {
vs.strings = make([]string, len(values))
for i := range vs.values {
b := bytes.Buffer{}
if !handleMethods(cs, &b, vs.values[i]) {
vs.strings = nil
break
}
vs.strings[i] = b.String()
}
}
if vs.strings == nil && cs.SpewKeys {
vs.strings = make([]string, len(values))
for i := range vs.values {
vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
}
}
return vs
}
// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
// directly, or whether it should be considered for sorting by surrogate keys
// (if the ConfigState allows it).
func canSortSimply(kind reflect.Kind) bool {
// This switch parallels valueSortLess, except for the default case.
switch kind {
case reflect.Bool:
return true
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return true
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return true
case reflect.Float32, reflect.Float64:
return true
case reflect.String:
return true
case reflect.Uintptr:
return true
case reflect.Array:
return true
}
return false
}
// Len returns the number of values in the slice. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Len() int {
return len(s.values)
}
// Swap swaps the values at the passed indices. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Swap(i, j int) {
s.values[i], s.values[j] = s.values[j], s.values[i]
if s.strings != nil {
s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
}
}
// valueSortLess returns whether the first value should sort before the second
// value. It is used by valueSorter.Less as part of the sort.Interface
// implementation.
func valueSortLess(a, b reflect.Value) bool {
switch a.Kind() {
case reflect.Bool:
return !a.Bool() && b.Bool()
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return a.Int() < b.Int()
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return a.Uint() < b.Uint()
case reflect.Float32, reflect.Float64:
return a.Float() < b.Float()
case reflect.String:
return a.String() < b.String()
case reflect.Uintptr:
return a.Uint() < b.Uint()
case reflect.Array:
// Compare the contents of both arrays.
l := a.Len()
for i := 0; i < l; i++ {
av := a.Index(i)
bv := b.Index(i)
if av.Interface() == bv.Interface() {
continue
}
return valueSortLess(av, bv)
}
}
return a.String() < b.String()
}
// Less returns whether the value at index i should sort before the
// value at index j. It is part of the sort.Interface implementation.
func (s *valuesSorter) Less(i, j int) bool {
if s.strings == nil {
return valueSortLess(s.values[i], s.values[j])
}
return s.strings[i] < s.strings[j]
}
// sortValues is a sort function that handles both native types and any type that
// can be converted to error or Stringer. Other inputs are sorted according to
// their Value.String() value to ensure display stability.
func sortValues(values []reflect.Value, cs *ConfigState) {
if len(values) == 0 {
return
}
sort.Sort(newValuesSorter(values, cs))
}

View File

@@ -1,298 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew_test
import (
"fmt"
"reflect"
"testing"
"github.com/davecgh/go-spew/spew"
)
// custom type to test Stinger interface on non-pointer receiver.
type stringer string
// String implements the Stringer interface for testing invocation of custom
// stringers on types with non-pointer receivers.
func (s stringer) String() string {
return "stringer " + string(s)
}
// custom type to test Stinger interface on pointer receiver.
type pstringer string
// String implements the Stringer interface for testing invocation of custom
// stringers on types with only pointer receivers.
func (s *pstringer) String() string {
return "stringer " + string(*s)
}
// xref1 and xref2 are cross referencing structs for testing circular reference
// detection.
type xref1 struct {
ps2 *xref2
}
type xref2 struct {
ps1 *xref1
}
// indirCir1, indirCir2, and indirCir3 are used to generate an indirect circular
// reference for testing detection.
type indirCir1 struct {
ps2 *indirCir2
}
type indirCir2 struct {
ps3 *indirCir3
}
type indirCir3 struct {
ps1 *indirCir1
}
// embed is used to test embedded structures.
type embed struct {
a string
}
// embedwrap is used to test embedded structures.
type embedwrap struct {
*embed
e *embed
}
// panicer is used to intentionally cause a panic for testing spew properly
// handles them
type panicer int
func (p panicer) String() string {
panic("test panic")
}
// customError is used to test custom error interface invocation.
type customError int
func (e customError) Error() string {
return fmt.Sprintf("error: %d", int(e))
}
// stringizeWants converts a slice of wanted test output into a format suitable
// for a test error message.
func stringizeWants(wants []string) string {
s := ""
for i, want := range wants {
if i > 0 {
s += fmt.Sprintf("want%d: %s", i+1, want)
} else {
s += "want: " + want
}
}
return s
}
// testFailed returns whether or not a test failed by checking if the result
// of the test is in the slice of wanted strings.
func testFailed(result string, wants []string) bool {
for _, want := range wants {
if result == want {
return false
}
}
return true
}
type sortableStruct struct {
x int
}
func (ss sortableStruct) String() string {
return fmt.Sprintf("ss.%d", ss.x)
}
type unsortableStruct struct {
x int
}
type sortTestCase struct {
input []reflect.Value
expected []reflect.Value
}
func helpTestSortValues(tests []sortTestCase, cs *spew.ConfigState, t *testing.T) {
getInterfaces := func(values []reflect.Value) []interface{} {
interfaces := []interface{}{}
for _, v := range values {
interfaces = append(interfaces, v.Interface())
}
return interfaces
}
for _, test := range tests {
spew.SortValues(test.input, cs)
// reflect.DeepEqual cannot really make sense of reflect.Value,
// probably because of all the pointer tricks. For instance,
// v(2.0) != v(2.0) on a 32-bits system. Turn them into interface{}
// instead.
input := getInterfaces(test.input)
expected := getInterfaces(test.expected)
if !reflect.DeepEqual(input, expected) {
t.Errorf("Sort mismatch:\n %v != %v", input, expected)
}
}
}
// TestSortValues ensures the sort functionality for relect.Value based sorting
// works as intended.
func TestSortValues(t *testing.T) {
v := reflect.ValueOf
a := v("a")
b := v("b")
c := v("c")
embedA := v(embed{"a"})
embedB := v(embed{"b"})
embedC := v(embed{"c"})
tests := []sortTestCase{
// No values.
{
[]reflect.Value{},
[]reflect.Value{},
},
// Bools.
{
[]reflect.Value{v(false), v(true), v(false)},
[]reflect.Value{v(false), v(false), v(true)},
},
// Ints.
{
[]reflect.Value{v(2), v(1), v(3)},
[]reflect.Value{v(1), v(2), v(3)},
},
// Uints.
{
[]reflect.Value{v(uint8(2)), v(uint8(1)), v(uint8(3))},
[]reflect.Value{v(uint8(1)), v(uint8(2)), v(uint8(3))},
},
// Floats.
{
[]reflect.Value{v(2.0), v(1.0), v(3.0)},
[]reflect.Value{v(1.0), v(2.0), v(3.0)},
},
// Strings.
{
[]reflect.Value{b, a, c},
[]reflect.Value{a, b, c},
},
// Array
{
[]reflect.Value{v([3]int{3, 2, 1}), v([3]int{1, 3, 2}), v([3]int{1, 2, 3})},
[]reflect.Value{v([3]int{1, 2, 3}), v([3]int{1, 3, 2}), v([3]int{3, 2, 1})},
},
// Uintptrs.
{
[]reflect.Value{v(uintptr(2)), v(uintptr(1)), v(uintptr(3))},
[]reflect.Value{v(uintptr(1)), v(uintptr(2)), v(uintptr(3))},
},
// SortableStructs.
{
// Note: not sorted - DisableMethods is set.
[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
},
// UnsortableStructs.
{
// Note: not sorted - SpewKeys is false.
[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
},
// Invalid.
{
[]reflect.Value{embedB, embedA, embedC},
[]reflect.Value{embedB, embedA, embedC},
},
}
cs := spew.ConfigState{DisableMethods: true, SpewKeys: false}
helpTestSortValues(tests, &cs, t)
}
// TestSortValuesWithMethods ensures the sort functionality for relect.Value
// based sorting works as intended when using string methods.
func TestSortValuesWithMethods(t *testing.T) {
v := reflect.ValueOf
a := v("a")
b := v("b")
c := v("c")
tests := []sortTestCase{
// Ints.
{
[]reflect.Value{v(2), v(1), v(3)},
[]reflect.Value{v(1), v(2), v(3)},
},
// Strings.
{
[]reflect.Value{b, a, c},
[]reflect.Value{a, b, c},
},
// SortableStructs.
{
[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
[]reflect.Value{v(sortableStruct{1}), v(sortableStruct{2}), v(sortableStruct{3})},
},
// UnsortableStructs.
{
// Note: not sorted - SpewKeys is false.
[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
},
}
cs := spew.ConfigState{DisableMethods: false, SpewKeys: false}
helpTestSortValues(tests, &cs, t)
}
// TestSortValuesWithSpew ensures the sort functionality for relect.Value
// based sorting works as intended when using spew to stringify keys.
func TestSortValuesWithSpew(t *testing.T) {
v := reflect.ValueOf
a := v("a")
b := v("b")
c := v("c")
tests := []sortTestCase{
// Ints.
{
[]reflect.Value{v(2), v(1), v(3)},
[]reflect.Value{v(1), v(2), v(3)},
},
// Strings.
{
[]reflect.Value{b, a, c},
[]reflect.Value{a, b, c},
},
// SortableStructs.
{
[]reflect.Value{v(sortableStruct{2}), v(sortableStruct{1}), v(sortableStruct{3})},
[]reflect.Value{v(sortableStruct{1}), v(sortableStruct{2}), v(sortableStruct{3})},
},
// UnsortableStructs.
{
[]reflect.Value{v(unsortableStruct{2}), v(unsortableStruct{1}), v(unsortableStruct{3})},
[]reflect.Value{v(unsortableStruct{1}), v(unsortableStruct{2}), v(unsortableStruct{3})},
},
}
cs := spew.ConfigState{DisableMethods: true, SpewKeys: true}
helpTestSortValues(tests, &cs, t)
}

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@@ -1,297 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"os"
)
// ConfigState houses the configuration options used by spew to format and
// display values. There is a global instance, Config, that is used to control
// all top-level Formatter and Dump functionality. Each ConfigState instance
// provides methods equivalent to the top-level functions.
//
// The zero value for ConfigState provides no indentation. You would typically
// want to set it to a space or a tab.
//
// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
// with default settings. See the documentation of NewDefaultConfig for default
// values.
type ConfigState struct {
// Indent specifies the string to use for each indentation level. The
// global config instance that all top-level functions use set this to a
// single space by default. If you would like more indentation, you might
// set this to a tab with "\t" or perhaps two spaces with " ".
Indent string
// MaxDepth controls the maximum number of levels to descend into nested
// data structures. The default, 0, means there is no limit.
//
// NOTE: Circular data structures are properly detected, so it is not
// necessary to set this value unless you specifically want to limit deeply
// nested data structures.
MaxDepth int
// DisableMethods specifies whether or not error and Stringer interfaces are
// invoked for types that implement them.
DisableMethods bool
// DisablePointerMethods specifies whether or not to check for and invoke
// error and Stringer interfaces on types which only accept a pointer
// receiver when the current type is not a pointer.
//
// NOTE: This might be an unsafe action since calling one of these methods
// with a pointer receiver could technically mutate the value, however,
// in practice, types which choose to satisify an error or Stringer
// interface with a pointer receiver should not be mutating their state
// inside these interface methods. As a result, this option relies on
// access to the unsafe package, so it will not have any effect when
// running in environments without access to the unsafe package such as
// Google App Engine or with the "disableunsafe" build tag specified.
DisablePointerMethods bool
// ContinueOnMethod specifies whether or not recursion should continue once
// a custom error or Stringer interface is invoked. The default, false,
// means it will print the results of invoking the custom error or Stringer
// interface and return immediately instead of continuing to recurse into
// the internals of the data type.
//
// NOTE: This flag does not have any effect if method invocation is disabled
// via the DisableMethods or DisablePointerMethods options.
ContinueOnMethod bool
// SortKeys specifies map keys should be sorted before being printed. Use
// this to have a more deterministic, diffable output. Note that only
// native types (bool, int, uint, floats, uintptr and string) and types
// that support the error or Stringer interfaces (if methods are
// enabled) are supported, with other types sorted according to the
// reflect.Value.String() output which guarantees display stability.
SortKeys bool
// SpewKeys specifies that, as a last resort attempt, map keys should
// be spewed to strings and sorted by those strings. This is only
// considered if SortKeys is true.
SpewKeys bool
}
// Config is the active configuration of the top-level functions.
// The configuration can be changed by modifying the contents of spew.Config.
var Config = ConfigState{Indent: " "}
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the formatted string as a value that satisfies error. See NewFormatter
// for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, c.convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, c.convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, c.convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a Formatter interface returned by c.NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, c.convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
return fmt.Print(c.convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, c.convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
return fmt.Println(c.convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprint(a ...interface{}) string {
return fmt.Sprint(c.convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, c.convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a Formatter interface returned by c.NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintln(a ...interface{}) string {
return fmt.Sprintln(c.convertArgs(a)...)
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
c.Printf, c.Println, or c.Printf.
*/
func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(c, v)
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
fdump(c, w, a...)
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by modifying the public members
of c. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func (c *ConfigState) Dump(a ...interface{}) {
fdump(c, os.Stdout, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func (c *ConfigState) Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(c, &buf, a...)
return buf.String()
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a spew Formatter interface using
// the ConfigState associated with s.
func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = newFormatter(c, arg)
}
return formatters
}
// NewDefaultConfig returns a ConfigState with the following default settings.
//
// Indent: " "
// MaxDepth: 0
// DisableMethods: false
// DisablePointerMethods: false
// ContinueOnMethod: false
// SortKeys: false
func NewDefaultConfig() *ConfigState {
return &ConfigState{Indent: " "}
}

View File

@@ -1,202 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
Package spew implements a deep pretty printer for Go data structures to aid in
debugging.
A quick overview of the additional features spew provides over the built-in
printing facilities for Go data types are as follows:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output (only when using
Dump style)
There are two different approaches spew allows for dumping Go data structures:
* Dump style which prints with newlines, customizable indentation,
and additional debug information such as types and all pointer addresses
used to indirect to the final value
* A custom Formatter interface that integrates cleanly with the standard fmt
package and replaces %v, %+v, %#v, and %#+v to provide inline printing
similar to the default %v while providing the additional functionality
outlined above and passing unsupported format verbs such as %x and %q
along to fmt
Quick Start
This section demonstrates how to quickly get started with spew. See the
sections below for further details on formatting and configuration options.
To dump a variable with full newlines, indentation, type, and pointer
information use Dump, Fdump, or Sdump:
spew.Dump(myVar1, myVar2, ...)
spew.Fdump(someWriter, myVar1, myVar2, ...)
str := spew.Sdump(myVar1, myVar2, ...)
Alternatively, if you would prefer to use format strings with a compacted inline
printing style, use the convenience wrappers Printf, Fprintf, etc with
%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
%#+v (adds types and pointer addresses):
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
Configuration Options
Configuration of spew is handled by fields in the ConfigState type. For
convenience, all of the top-level functions use a global state available
via the spew.Config global.
It is also possible to create a ConfigState instance that provides methods
equivalent to the top-level functions. This allows concurrent configuration
options. See the ConfigState documentation for more details.
The following configuration options are available:
* Indent
String to use for each indentation level for Dump functions.
It is a single space by default. A popular alternative is "\t".
* MaxDepth
Maximum number of levels to descend into nested data structures.
There is no limit by default.
* DisableMethods
Disables invocation of error and Stringer interface methods.
Method invocation is enabled by default.
* DisablePointerMethods
Disables invocation of error and Stringer interface methods on types
which only accept pointer receivers from non-pointer variables.
Pointer method invocation is enabled by default.
* ContinueOnMethod
Enables recursion into types after invoking error and Stringer interface
methods. Recursion after method invocation is disabled by default.
* SortKeys
Specifies map keys should be sorted before being printed. Use
this to have a more deterministic, diffable output. Note that
only native types (bool, int, uint, floats, uintptr and string)
and types which implement error or Stringer interfaces are
supported with other types sorted according to the
reflect.Value.String() output which guarantees display
stability. Natural map order is used by default.
* SpewKeys
Specifies that, as a last resort attempt, map keys should be
spewed to strings and sorted by those strings. This is only
considered if SortKeys is true.
Dump Usage
Simply call spew.Dump with a list of variables you want to dump:
spew.Dump(myVar1, myVar2, ...)
You may also call spew.Fdump if you would prefer to output to an arbitrary
io.Writer. For example, to dump to standard error:
spew.Fdump(os.Stderr, myVar1, myVar2, ...)
A third option is to call spew.Sdump to get the formatted output as a string:
str := spew.Sdump(myVar1, myVar2, ...)
Sample Dump Output
See the Dump example for details on the setup of the types and variables being
shown here.
(main.Foo) {
unexportedField: (*main.Bar)(0xf84002e210)({
flag: (main.Flag) flagTwo,
data: (uintptr) <nil>
}),
ExportedField: (map[interface {}]interface {}) (len=1) {
(string) (len=3) "one": (bool) true
}
}
Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
command as shown.
([]uint8) (len=32 cap=32) {
00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
00000020 31 32 |12|
}
Custom Formatter
Spew provides a custom formatter that implements the fmt.Formatter interface
so that it integrates cleanly with standard fmt package printing functions. The
formatter is useful for inline printing of smaller data types similar to the
standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Custom Formatter Usage
The simplest way to make use of the spew custom formatter is to call one of the
convenience functions such as spew.Printf, spew.Println, or spew.Printf. The
functions have syntax you are most likely already familiar with:
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Println(myVar, myVar2)
spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
See the Index for the full list convenience functions.
Sample Formatter Output
Double pointer to a uint8:
%v: <**>5
%+v: <**>(0xf8400420d0->0xf8400420c8)5
%#v: (**uint8)5
%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
Pointer to circular struct with a uint8 field and a pointer to itself:
%v: <*>{1 <*><shown>}
%+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
%#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
See the Printf example for details on the setup of variables being shown
here.
Errors
Since it is possible for custom Stringer/error interfaces to panic, spew
detects them and handles them internally by printing the panic information
inline with the output. Since spew is intended to provide deep pretty printing
capabilities on structures, it intentionally does not return any errors.
*/
package spew

View File

@@ -1,509 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"encoding/hex"
"fmt"
"io"
"os"
"reflect"
"regexp"
"strconv"
"strings"
)
var (
// uint8Type is a reflect.Type representing a uint8. It is used to
// convert cgo types to uint8 slices for hexdumping.
uint8Type = reflect.TypeOf(uint8(0))
// cCharRE is a regular expression that matches a cgo char.
// It is used to detect character arrays to hexdump them.
cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
// cUnsignedCharRE is a regular expression that matches a cgo unsigned
// char. It is used to detect unsigned character arrays to hexdump
// them.
cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
// It is used to detect uint8_t arrays to hexdump them.
cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
)
// dumpState contains information about the state of a dump operation.
type dumpState struct {
w io.Writer
depth int
pointers map[uintptr]int
ignoreNextType bool
ignoreNextIndent bool
cs *ConfigState
}
// indent performs indentation according to the depth level and cs.Indent
// option.
func (d *dumpState) indent() {
if d.ignoreNextIndent {
d.ignoreNextIndent = false
return
}
d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
}
// unpackValue returns values inside of non-nil interfaces when possible.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface && !v.IsNil() {
v = v.Elem()
}
return v
}
// dumpPtr handles formatting of pointers by indirecting them as necessary.
func (d *dumpState) dumpPtr(v reflect.Value) {
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range d.pointers {
if depth >= d.depth {
delete(d.pointers, k)
}
}
// Keep list of all dereferenced pointers to show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by dereferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := d.pointers[addr]; ok && pd < d.depth {
cycleFound = true
indirects--
break
}
d.pointers[addr] = d.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type information.
d.w.Write(openParenBytes)
d.w.Write(bytes.Repeat(asteriskBytes, indirects))
d.w.Write([]byte(ve.Type().String()))
d.w.Write(closeParenBytes)
// Display pointer information.
if len(pointerChain) > 0 {
d.w.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
d.w.Write(pointerChainBytes)
}
printHexPtr(d.w, addr)
}
d.w.Write(closeParenBytes)
}
// Display dereferenced value.
d.w.Write(openParenBytes)
switch {
case nilFound == true:
d.w.Write(nilAngleBytes)
case cycleFound == true:
d.w.Write(circularBytes)
default:
d.ignoreNextType = true
d.dump(ve)
}
d.w.Write(closeParenBytes)
}
// dumpSlice handles formatting of arrays and slices. Byte (uint8 under
// reflection) arrays and slices are dumped in hexdump -C fashion.
func (d *dumpState) dumpSlice(v reflect.Value) {
// Determine whether this type should be hex dumped or not. Also,
// for types which should be hexdumped, try to use the underlying data
// first, then fall back to trying to convert them to a uint8 slice.
var buf []uint8
doConvert := false
doHexDump := false
numEntries := v.Len()
if numEntries > 0 {
vt := v.Index(0).Type()
vts := vt.String()
switch {
// C types that need to be converted.
case cCharRE.MatchString(vts):
fallthrough
case cUnsignedCharRE.MatchString(vts):
fallthrough
case cUint8tCharRE.MatchString(vts):
doConvert = true
// Try to use existing uint8 slices and fall back to converting
// and copying if that fails.
case vt.Kind() == reflect.Uint8:
// We need an addressable interface to convert the type
// to a byte slice. However, the reflect package won't
// give us an interface on certain things like
// unexported struct fields in order to enforce
// visibility rules. We use unsafe, when available, to
// bypass these restrictions since this package does not
// mutate the values.
vs := v
if !vs.CanInterface() || !vs.CanAddr() {
vs = unsafeReflectValue(vs)
}
if !UnsafeDisabled {
vs = vs.Slice(0, numEntries)
// Use the existing uint8 slice if it can be
// type asserted.
iface := vs.Interface()
if slice, ok := iface.([]uint8); ok {
buf = slice
doHexDump = true
break
}
}
// The underlying data needs to be converted if it can't
// be type asserted to a uint8 slice.
doConvert = true
}
// Copy and convert the underlying type if needed.
if doConvert && vt.ConvertibleTo(uint8Type) {
// Convert and copy each element into a uint8 byte
// slice.
buf = make([]uint8, numEntries)
for i := 0; i < numEntries; i++ {
vv := v.Index(i)
buf[i] = uint8(vv.Convert(uint8Type).Uint())
}
doHexDump = true
}
}
// Hexdump the entire slice as needed.
if doHexDump {
indent := strings.Repeat(d.cs.Indent, d.depth)
str := indent + hex.Dump(buf)
str = strings.Replace(str, "\n", "\n"+indent, -1)
str = strings.TrimRight(str, d.cs.Indent)
d.w.Write([]byte(str))
return
}
// Recursively call dump for each item.
for i := 0; i < numEntries; i++ {
d.dump(d.unpackValue(v.Index(i)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
// dump is the main workhorse for dumping a value. It uses the passed reflect
// value to figure out what kind of object we are dealing with and formats it
// appropriately. It is a recursive function, however circular data structures
// are detected and handled properly.
func (d *dumpState) dump(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
d.w.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
d.indent()
d.dumpPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !d.ignoreNextType {
d.indent()
d.w.Write(openParenBytes)
d.w.Write([]byte(v.Type().String()))
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
d.ignoreNextType = false
// Display length and capacity if the built-in len and cap functions
// work with the value's kind and the len/cap itself is non-zero.
valueLen, valueCap := 0, 0
switch v.Kind() {
case reflect.Array, reflect.Slice, reflect.Chan:
valueLen, valueCap = v.Len(), v.Cap()
case reflect.Map, reflect.String:
valueLen = v.Len()
}
if valueLen != 0 || valueCap != 0 {
d.w.Write(openParenBytes)
if valueLen != 0 {
d.w.Write(lenEqualsBytes)
printInt(d.w, int64(valueLen), 10)
}
if valueCap != 0 {
if valueLen != 0 {
d.w.Write(spaceBytes)
}
d.w.Write(capEqualsBytes)
printInt(d.w, int64(valueCap), 10)
}
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
// Call Stringer/error interfaces if they exist and the handle methods flag
// is enabled
if !d.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(d.cs, d.w, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(d.w, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(d.w, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(d.w, v.Uint(), 10)
case reflect.Float32:
printFloat(d.w, v.Float(), 32)
case reflect.Float64:
printFloat(d.w, v.Float(), 64)
case reflect.Complex64:
printComplex(d.w, v.Complex(), 32)
case reflect.Complex128:
printComplex(d.w, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
d.dumpSlice(v)
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.String:
d.w.Write([]byte(strconv.Quote(v.String())))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
d.w.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
numEntries := v.Len()
keys := v.MapKeys()
if d.cs.SortKeys {
sortValues(keys, d.cs)
}
for i, key := range keys {
d.dump(d.unpackValue(key))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.MapIndex(key)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Struct:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
vt := v.Type()
numFields := v.NumField()
for i := 0; i < numFields; i++ {
d.indent()
vtf := vt.Field(i)
d.w.Write([]byte(vtf.Name))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.Field(i)))
if i < (numFields - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(d.w, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(d.w, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it in case any new
// types are added.
default:
if v.CanInterface() {
fmt.Fprintf(d.w, "%v", v.Interface())
} else {
fmt.Fprintf(d.w, "%v", v.String())
}
}
}
// fdump is a helper function to consolidate the logic from the various public
// methods which take varying writers and config states.
func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
for _, arg := range a {
if arg == nil {
w.Write(interfaceBytes)
w.Write(spaceBytes)
w.Write(nilAngleBytes)
w.Write(newlineBytes)
continue
}
d := dumpState{w: w, cs: cs}
d.pointers = make(map[uintptr]int)
d.dump(reflect.ValueOf(arg))
d.w.Write(newlineBytes)
}
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func Fdump(w io.Writer, a ...interface{}) {
fdump(&Config, w, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(&Config, &buf, a...)
return buf.String()
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by an exported package global,
spew.Config. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func Dump(a ...interface{}) {
fdump(&Config, os.Stdout, a...)
}

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@@ -1,98 +0,0 @@
// Copyright (c) 2013 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when both cgo is supported and "-tags testcgo" is added to the go test
// command line. This means the cgo tests are only added (and hence run) when
// specifially requested. This configuration is used because spew itself
// does not require cgo to run even though it does handle certain cgo types
// specially. Rather than forcing all clients to require cgo and an external
// C compiler just to run the tests, this scheme makes them optional.
// +build cgo,testcgo
package spew_test
import (
"fmt"
"github.com/davecgh/go-spew/spew/testdata"
)
func addCgoDumpTests() {
// C char pointer.
v := testdata.GetCgoCharPointer()
nv := testdata.GetCgoNullCharPointer()
pv := &v
vcAddr := fmt.Sprintf("%p", v)
vAddr := fmt.Sprintf("%p", pv)
pvAddr := fmt.Sprintf("%p", &pv)
vt := "*testdata._Ctype_char"
vs := "116"
addDumpTest(v, "("+vt+")("+vcAddr+")("+vs+")\n")
addDumpTest(pv, "(*"+vt+")("+vAddr+"->"+vcAddr+")("+vs+")\n")
addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+"->"+vcAddr+")("+vs+")\n")
addDumpTest(nv, "("+vt+")(<nil>)\n")
// C char array.
v2, v2l, v2c := testdata.GetCgoCharArray()
v2Len := fmt.Sprintf("%d", v2l)
v2Cap := fmt.Sprintf("%d", v2c)
v2t := "[6]testdata._Ctype_char"
v2s := "(len=" + v2Len + " cap=" + v2Cap + ") " +
"{\n 00000000 74 65 73 74 32 00 " +
" |test2.|\n}"
addDumpTest(v2, "("+v2t+") "+v2s+"\n")
// C unsigned char array.
v3, v3l, v3c := testdata.GetCgoUnsignedCharArray()
v3Len := fmt.Sprintf("%d", v3l)
v3Cap := fmt.Sprintf("%d", v3c)
v3t := "[6]testdata._Ctype_unsignedchar"
v3s := "(len=" + v3Len + " cap=" + v3Cap + ") " +
"{\n 00000000 74 65 73 74 33 00 " +
" |test3.|\n}"
addDumpTest(v3, "("+v3t+") "+v3s+"\n")
// C signed char array.
v4, v4l, v4c := testdata.GetCgoSignedCharArray()
v4Len := fmt.Sprintf("%d", v4l)
v4Cap := fmt.Sprintf("%d", v4c)
v4t := "[6]testdata._Ctype_schar"
v4t2 := "testdata._Ctype_schar"
v4s := "(len=" + v4Len + " cap=" + v4Cap + ") " +
"{\n (" + v4t2 + ") 116,\n (" + v4t2 + ") 101,\n (" + v4t2 +
") 115,\n (" + v4t2 + ") 116,\n (" + v4t2 + ") 52,\n (" + v4t2 +
") 0\n}"
addDumpTest(v4, "("+v4t+") "+v4s+"\n")
// C uint8_t array.
v5, v5l, v5c := testdata.GetCgoUint8tArray()
v5Len := fmt.Sprintf("%d", v5l)
v5Cap := fmt.Sprintf("%d", v5c)
v5t := "[6]testdata._Ctype_uint8_t"
v5s := "(len=" + v5Len + " cap=" + v5Cap + ") " +
"{\n 00000000 74 65 73 74 35 00 " +
" |test5.|\n}"
addDumpTest(v5, "("+v5t+") "+v5s+"\n")
// C typedefed unsigned char array.
v6, v6l, v6c := testdata.GetCgoTypdefedUnsignedCharArray()
v6Len := fmt.Sprintf("%d", v6l)
v6Cap := fmt.Sprintf("%d", v6c)
v6t := "[6]testdata._Ctype_custom_uchar_t"
v6s := "(len=" + v6Len + " cap=" + v6Cap + ") " +
"{\n 00000000 74 65 73 74 36 00 " +
" |test6.|\n}"
addDumpTest(v6, "("+v6t+") "+v6s+"\n")
}

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@@ -1,26 +0,0 @@
// Copyright (c) 2013 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when either cgo is not supported or "-tags testcgo" is not added to the go
// test command line. This file intentionally does not setup any cgo tests in
// this scenario.
// +build !cgo !testcgo
package spew_test
func addCgoDumpTests() {
// Don't add any tests for cgo since this file is only compiled when
// there should not be any cgo tests.
}

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@@ -1,226 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew_test
import (
"fmt"
"github.com/davecgh/go-spew/spew"
)
type Flag int
const (
flagOne Flag = iota
flagTwo
)
var flagStrings = map[Flag]string{
flagOne: "flagOne",
flagTwo: "flagTwo",
}
func (f Flag) String() string {
if s, ok := flagStrings[f]; ok {
return s
}
return fmt.Sprintf("Unknown flag (%d)", int(f))
}
type Bar struct {
data uintptr
}
type Foo struct {
unexportedField Bar
ExportedField map[interface{}]interface{}
}
// This example demonstrates how to use Dump to dump variables to stdout.
func ExampleDump() {
// The following package level declarations are assumed for this example:
/*
type Flag int
const (
flagOne Flag = iota
flagTwo
)
var flagStrings = map[Flag]string{
flagOne: "flagOne",
flagTwo: "flagTwo",
}
func (f Flag) String() string {
if s, ok := flagStrings[f]; ok {
return s
}
return fmt.Sprintf("Unknown flag (%d)", int(f))
}
type Bar struct {
data uintptr
}
type Foo struct {
unexportedField Bar
ExportedField map[interface{}]interface{}
}
*/
// Setup some sample data structures for the example.
bar := Bar{uintptr(0)}
s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
f := Flag(5)
b := []byte{
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
0x31, 0x32,
}
// Dump!
spew.Dump(s1, f, b)
// Output:
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
// (spew_test.Flag) Unknown flag (5)
// ([]uint8) (len=34 cap=34) {
// 00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
// 00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
// 00000020 31 32 |12|
// }
//
}
// This example demonstrates how to use Printf to display a variable with a
// format string and inline formatting.
func ExamplePrintf() {
// Create a double pointer to a uint 8.
ui8 := uint8(5)
pui8 := &ui8
ppui8 := &pui8
// Create a circular data type.
type circular struct {
ui8 uint8
c *circular
}
c := circular{ui8: 1}
c.c = &c
// Print!
spew.Printf("ppui8: %v\n", ppui8)
spew.Printf("circular: %v\n", c)
// Output:
// ppui8: <**>5
// circular: {1 <*>{1 <*><shown>}}
}
// This example demonstrates how to use a ConfigState.
func ExampleConfigState() {
// Modify the indent level of the ConfigState only. The global
// configuration is not modified.
scs := spew.ConfigState{Indent: "\t"}
// Output using the ConfigState instance.
v := map[string]int{"one": 1}
scs.Printf("v: %v\n", v)
scs.Dump(v)
// Output:
// v: map[one:1]
// (map[string]int) (len=1) {
// (string) (len=3) "one": (int) 1
// }
}
// This example demonstrates how to use ConfigState.Dump to dump variables to
// stdout
func ExampleConfigState_Dump() {
// See the top-level Dump example for details on the types used in this
// example.
// Create two ConfigState instances with different indentation.
scs := spew.ConfigState{Indent: "\t"}
scs2 := spew.ConfigState{Indent: " "}
// Setup some sample data structures for the example.
bar := Bar{uintptr(0)}
s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
// Dump using the ConfigState instances.
scs.Dump(s1)
scs2.Dump(s1)
// Output:
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
//
}
// This example demonstrates how to use ConfigState.Printf to display a variable
// with a format string and inline formatting.
func ExampleConfigState_Printf() {
// See the top-level Dump example for details on the types used in this
// example.
// Create two ConfigState instances and modify the method handling of the
// first ConfigState only.
scs := spew.NewDefaultConfig()
scs2 := spew.NewDefaultConfig()
scs.DisableMethods = true
// Alternatively
// scs := spew.ConfigState{Indent: " ", DisableMethods: true}
// scs2 := spew.ConfigState{Indent: " "}
// This is of type Flag which implements a Stringer and has raw value 1.
f := flagTwo
// Dump using the ConfigState instances.
scs.Printf("f: %v\n", f)
scs2.Printf("f: %v\n", f)
// Output:
// f: 1
// f: flagTwo
}

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@@ -1,419 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"reflect"
"strconv"
"strings"
)
// supportedFlags is a list of all the character flags supported by fmt package.
const supportedFlags = "0-+# "
// formatState implements the fmt.Formatter interface and contains information
// about the state of a formatting operation. The NewFormatter function can
// be used to get a new Formatter which can be used directly as arguments
// in standard fmt package printing calls.
type formatState struct {
value interface{}
fs fmt.State
depth int
pointers map[uintptr]int
ignoreNextType bool
cs *ConfigState
}
// buildDefaultFormat recreates the original format string without precision
// and width information to pass in to fmt.Sprintf in the case of an
// unrecognized type. Unless new types are added to the language, this
// function won't ever be called.
func (f *formatState) buildDefaultFormat() (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
buf.WriteRune('v')
format = buf.String()
return format
}
// constructOrigFormat recreates the original format string including precision
// and width information to pass along to the standard fmt package. This allows
// automatic deferral of all format strings this package doesn't support.
func (f *formatState) constructOrigFormat(verb rune) (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
if width, ok := f.fs.Width(); ok {
buf.WriteString(strconv.Itoa(width))
}
if precision, ok := f.fs.Precision(); ok {
buf.Write(precisionBytes)
buf.WriteString(strconv.Itoa(precision))
}
buf.WriteRune(verb)
format = buf.String()
return format
}
// unpackValue returns values inside of non-nil interfaces when possible and
// ensures that types for values which have been unpacked from an interface
// are displayed when the show types flag is also set.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface {
f.ignoreNextType = false
if !v.IsNil() {
v = v.Elem()
}
}
return v
}
// formatPtr handles formatting of pointers by indirecting them as necessary.
func (f *formatState) formatPtr(v reflect.Value) {
// Display nil if top level pointer is nil.
showTypes := f.fs.Flag('#')
if v.IsNil() && (!showTypes || f.ignoreNextType) {
f.fs.Write(nilAngleBytes)
return
}
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range f.pointers {
if depth >= f.depth {
delete(f.pointers, k)
}
}
// Keep list of all dereferenced pointers to possibly show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by derferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := f.pointers[addr]; ok && pd < f.depth {
cycleFound = true
indirects--
break
}
f.pointers[addr] = f.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type or indirection level depending on flags.
if showTypes && !f.ignoreNextType {
f.fs.Write(openParenBytes)
f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
f.fs.Write([]byte(ve.Type().String()))
f.fs.Write(closeParenBytes)
} else {
if nilFound || cycleFound {
indirects += strings.Count(ve.Type().String(), "*")
}
f.fs.Write(openAngleBytes)
f.fs.Write([]byte(strings.Repeat("*", indirects)))
f.fs.Write(closeAngleBytes)
}
// Display pointer information depending on flags.
if f.fs.Flag('+') && (len(pointerChain) > 0) {
f.fs.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
f.fs.Write(pointerChainBytes)
}
printHexPtr(f.fs, addr)
}
f.fs.Write(closeParenBytes)
}
// Display dereferenced value.
switch {
case nilFound == true:
f.fs.Write(nilAngleBytes)
case cycleFound == true:
f.fs.Write(circularShortBytes)
default:
f.ignoreNextType = true
f.format(ve)
}
}
// format is the main workhorse for providing the Formatter interface. It
// uses the passed reflect value to figure out what kind of object we are
// dealing with and formats it appropriately. It is a recursive function,
// however circular data structures are detected and handled properly.
func (f *formatState) format(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
f.fs.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
f.formatPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !f.ignoreNextType && f.fs.Flag('#') {
f.fs.Write(openParenBytes)
f.fs.Write([]byte(v.Type().String()))
f.fs.Write(closeParenBytes)
}
f.ignoreNextType = false
// Call Stringer/error interfaces if they exist and the handle methods
// flag is enabled.
if !f.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(f.cs, f.fs, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(f.fs, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(f.fs, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(f.fs, v.Uint(), 10)
case reflect.Float32:
printFloat(f.fs, v.Float(), 32)
case reflect.Float64:
printFloat(f.fs, v.Float(), 64)
case reflect.Complex64:
printComplex(f.fs, v.Complex(), 32)
case reflect.Complex128:
printComplex(f.fs, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
f.fs.Write(openBracketBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
numEntries := v.Len()
for i := 0; i < numEntries; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(v.Index(i)))
}
}
f.depth--
f.fs.Write(closeBracketBytes)
case reflect.String:
f.fs.Write([]byte(v.String()))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
f.fs.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
f.fs.Write(openMapBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
keys := v.MapKeys()
if f.cs.SortKeys {
sortValues(keys, f.cs)
}
for i, key := range keys {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(key))
f.fs.Write(colonBytes)
f.ignoreNextType = true
f.format(f.unpackValue(v.MapIndex(key)))
}
}
f.depth--
f.fs.Write(closeMapBytes)
case reflect.Struct:
numFields := v.NumField()
f.fs.Write(openBraceBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
vt := v.Type()
for i := 0; i < numFields; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
vtf := vt.Field(i)
if f.fs.Flag('+') || f.fs.Flag('#') {
f.fs.Write([]byte(vtf.Name))
f.fs.Write(colonBytes)
}
f.format(f.unpackValue(v.Field(i)))
}
}
f.depth--
f.fs.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(f.fs, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(f.fs, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it if any get added.
default:
format := f.buildDefaultFormat()
if v.CanInterface() {
fmt.Fprintf(f.fs, format, v.Interface())
} else {
fmt.Fprintf(f.fs, format, v.String())
}
}
}
// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
// details.
func (f *formatState) Format(fs fmt.State, verb rune) {
f.fs = fs
// Use standard formatting for verbs that are not v.
if verb != 'v' {
format := f.constructOrigFormat(verb)
fmt.Fprintf(fs, format, f.value)
return
}
if f.value == nil {
if fs.Flag('#') {
fs.Write(interfaceBytes)
}
fs.Write(nilAngleBytes)
return
}
f.format(reflect.ValueOf(f.value))
}
// newFormatter is a helper function to consolidate the logic from the various
// public methods which take varying config states.
func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
fs := &formatState{value: v, cs: cs}
fs.pointers = make(map[uintptr]int)
return fs
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
Printf, Println, or Fprintf.
*/
func NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(&Config, v)
}

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@@ -1,87 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
This test file is part of the spew package rather than than the spew_test
package because it needs access to internals to properly test certain cases
which are not possible via the public interface since they should never happen.
*/
package spew
import (
"bytes"
"reflect"
"testing"
)
// dummyFmtState implements a fake fmt.State to use for testing invalid
// reflect.Value handling. This is necessary because the fmt package catches
// invalid values before invoking the formatter on them.
type dummyFmtState struct {
bytes.Buffer
}
func (dfs *dummyFmtState) Flag(f int) bool {
if f == int('+') {
return true
}
return false
}
func (dfs *dummyFmtState) Precision() (int, bool) {
return 0, false
}
func (dfs *dummyFmtState) Width() (int, bool) {
return 0, false
}
// TestInvalidReflectValue ensures the dump and formatter code handles an
// invalid reflect value properly. This needs access to internal state since it
// should never happen in real code and therefore can't be tested via the public
// API.
func TestInvalidReflectValue(t *testing.T) {
i := 1
// Dump invalid reflect value.
v := new(reflect.Value)
buf := new(bytes.Buffer)
d := dumpState{w: buf, cs: &Config}
d.dump(*v)
s := buf.String()
want := "<invalid>"
if s != want {
t.Errorf("InvalidReflectValue #%d\n got: %s want: %s", i, s, want)
}
i++
// Formatter invalid reflect value.
buf2 := new(dummyFmtState)
f := formatState{value: *v, cs: &Config, fs: buf2}
f.format(*v)
s = buf2.String()
want = "<invalid>"
if s != want {
t.Errorf("InvalidReflectValue #%d got: %s want: %s", i, s, want)
}
}
// SortValues makes the internal sortValues function available to the test
// package.
func SortValues(values []reflect.Value, cs *ConfigState) {
sortValues(values, cs)
}

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@@ -1,101 +0,0 @@
// Copyright (c) 2013-2015 Dave Collins <dave@davec.name>
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is not running on Google App Engine and "-tags disableunsafe"
// is not added to the go build command line.
// +build !appengine,!disableunsafe
/*
This test file is part of the spew package rather than than the spew_test
package because it needs access to internals to properly test certain cases
which are not possible via the public interface since they should never happen.
*/
package spew
import (
"bytes"
"reflect"
"testing"
"unsafe"
)
// changeKind uses unsafe to intentionally change the kind of a reflect.Value to
// the maximum kind value which does not exist. This is needed to test the
// fallback code which punts to the standard fmt library for new types that
// might get added to the language.
func changeKind(v *reflect.Value, readOnly bool) {
rvf := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + offsetFlag))
*rvf = *rvf | ((1<<flagKindWidth - 1) << flagKindShift)
if readOnly {
*rvf |= flagRO
} else {
*rvf &= ^uintptr(flagRO)
}
}
// TestAddedReflectValue tests functionaly of the dump and formatter code which
// falls back to the standard fmt library for new types that might get added to
// the language.
func TestAddedReflectValue(t *testing.T) {
i := 1
// Dump using a reflect.Value that is exported.
v := reflect.ValueOf(int8(5))
changeKind(&v, false)
buf := new(bytes.Buffer)
d := dumpState{w: buf, cs: &Config}
d.dump(v)
s := buf.String()
want := "(int8) 5"
if s != want {
t.Errorf("TestAddedReflectValue #%d\n got: %s want: %s", i, s, want)
}
i++
// Dump using a reflect.Value that is not exported.
changeKind(&v, true)
buf.Reset()
d.dump(v)
s = buf.String()
want = "(int8) <int8 Value>"
if s != want {
t.Errorf("TestAddedReflectValue #%d\n got: %s want: %s", i, s, want)
}
i++
// Formatter using a reflect.Value that is exported.
changeKind(&v, false)
buf2 := new(dummyFmtState)
f := formatState{value: v, cs: &Config, fs: buf2}
f.format(v)
s = buf2.String()
want = "5"
if s != want {
t.Errorf("TestAddedReflectValue #%d got: %s want: %s", i, s, want)
}
i++
// Formatter using a reflect.Value that is not exported.
changeKind(&v, true)
buf2.Reset()
f = formatState{value: v, cs: &Config, fs: buf2}
f.format(v)
s = buf2.String()
want = "<int8 Value>"
if s != want {
t.Errorf("TestAddedReflectValue #%d got: %s want: %s", i, s, want)
}
}

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@@ -1,148 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"fmt"
"io"
)
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the formatted string as a value that satisfies error. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a default Formatter interface returned by NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
func Print(a ...interface{}) (n int, err error) {
return fmt.Print(convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
func Println(a ...interface{}) (n int, err error) {
return fmt.Println(convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprint(a ...interface{}) string {
return fmt.Sprint(convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintln(a ...interface{}) string {
return fmt.Sprintln(convertArgs(a)...)
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a default spew Formatter interface.
func convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = NewFormatter(arg)
}
return formatters
}

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@@ -1,309 +0,0 @@
/*
* Copyright (c) 2013 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew_test
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"testing"
"github.com/davecgh/go-spew/spew"
)
// spewFunc is used to identify which public function of the spew package or
// ConfigState a test applies to.
type spewFunc int
const (
fCSFdump spewFunc = iota
fCSFprint
fCSFprintf
fCSFprintln
fCSPrint
fCSPrintln
fCSSdump
fCSSprint
fCSSprintf
fCSSprintln
fCSErrorf
fCSNewFormatter
fErrorf
fFprint
fFprintln
fPrint
fPrintln
fSdump
fSprint
fSprintf
fSprintln
)
// Map of spewFunc values to names for pretty printing.
var spewFuncStrings = map[spewFunc]string{
fCSFdump: "ConfigState.Fdump",
fCSFprint: "ConfigState.Fprint",
fCSFprintf: "ConfigState.Fprintf",
fCSFprintln: "ConfigState.Fprintln",
fCSSdump: "ConfigState.Sdump",
fCSPrint: "ConfigState.Print",
fCSPrintln: "ConfigState.Println",
fCSSprint: "ConfigState.Sprint",
fCSSprintf: "ConfigState.Sprintf",
fCSSprintln: "ConfigState.Sprintln",
fCSErrorf: "ConfigState.Errorf",
fCSNewFormatter: "ConfigState.NewFormatter",
fErrorf: "spew.Errorf",
fFprint: "spew.Fprint",
fFprintln: "spew.Fprintln",
fPrint: "spew.Print",
fPrintln: "spew.Println",
fSdump: "spew.Sdump",
fSprint: "spew.Sprint",
fSprintf: "spew.Sprintf",
fSprintln: "spew.Sprintln",
}
func (f spewFunc) String() string {
if s, ok := spewFuncStrings[f]; ok {
return s
}
return fmt.Sprintf("Unknown spewFunc (%d)", int(f))
}
// spewTest is used to describe a test to be performed against the public
// functions of the spew package or ConfigState.
type spewTest struct {
cs *spew.ConfigState
f spewFunc
format string
in interface{}
want string
}
// spewTests houses the tests to be performed against the public functions of
// the spew package and ConfigState.
//
// These tests are only intended to ensure the public functions are exercised
// and are intentionally not exhaustive of types. The exhaustive type
// tests are handled in the dump and format tests.
var spewTests []spewTest
// redirStdout is a helper function to return the standard output from f as a
// byte slice.
func redirStdout(f func()) ([]byte, error) {
tempFile, err := ioutil.TempFile("", "ss-test")
if err != nil {
return nil, err
}
fileName := tempFile.Name()
defer os.Remove(fileName) // Ignore error
origStdout := os.Stdout
os.Stdout = tempFile
f()
os.Stdout = origStdout
tempFile.Close()
return ioutil.ReadFile(fileName)
}
func initSpewTests() {
// Config states with various settings.
scsDefault := spew.NewDefaultConfig()
scsNoMethods := &spew.ConfigState{Indent: " ", DisableMethods: true}
scsNoPmethods := &spew.ConfigState{Indent: " ", DisablePointerMethods: true}
scsMaxDepth := &spew.ConfigState{Indent: " ", MaxDepth: 1}
scsContinue := &spew.ConfigState{Indent: " ", ContinueOnMethod: true}
// Variables for tests on types which implement Stringer interface with and
// without a pointer receiver.
ts := stringer("test")
tps := pstringer("test")
// depthTester is used to test max depth handling for structs, array, slices
// and maps.
type depthTester struct {
ic indirCir1
arr [1]string
slice []string
m map[string]int
}
dt := depthTester{indirCir1{nil}, [1]string{"arr"}, []string{"slice"},
map[string]int{"one": 1}}
// Variable for tests on types which implement error interface.
te := customError(10)
spewTests = []spewTest{
{scsDefault, fCSFdump, "", int8(127), "(int8) 127\n"},
{scsDefault, fCSFprint, "", int16(32767), "32767"},
{scsDefault, fCSFprintf, "%v", int32(2147483647), "2147483647"},
{scsDefault, fCSFprintln, "", int(2147483647), "2147483647\n"},
{scsDefault, fCSPrint, "", int64(9223372036854775807), "9223372036854775807"},
{scsDefault, fCSPrintln, "", uint8(255), "255\n"},
{scsDefault, fCSSdump, "", uint8(64), "(uint8) 64\n"},
{scsDefault, fCSSprint, "", complex(1, 2), "(1+2i)"},
{scsDefault, fCSSprintf, "%v", complex(float32(3), 4), "(3+4i)"},
{scsDefault, fCSSprintln, "", complex(float64(5), 6), "(5+6i)\n"},
{scsDefault, fCSErrorf, "%#v", uint16(65535), "(uint16)65535"},
{scsDefault, fCSNewFormatter, "%v", uint32(4294967295), "4294967295"},
{scsDefault, fErrorf, "%v", uint64(18446744073709551615), "18446744073709551615"},
{scsDefault, fFprint, "", float32(3.14), "3.14"},
{scsDefault, fFprintln, "", float64(6.28), "6.28\n"},
{scsDefault, fPrint, "", true, "true"},
{scsDefault, fPrintln, "", false, "false\n"},
{scsDefault, fSdump, "", complex(-10, -20), "(complex128) (-10-20i)\n"},
{scsDefault, fSprint, "", complex(-1, -2), "(-1-2i)"},
{scsDefault, fSprintf, "%v", complex(float32(-3), -4), "(-3-4i)"},
{scsDefault, fSprintln, "", complex(float64(-5), -6), "(-5-6i)\n"},
{scsNoMethods, fCSFprint, "", ts, "test"},
{scsNoMethods, fCSFprint, "", &ts, "<*>test"},
{scsNoMethods, fCSFprint, "", tps, "test"},
{scsNoMethods, fCSFprint, "", &tps, "<*>test"},
{scsNoPmethods, fCSFprint, "", ts, "stringer test"},
{scsNoPmethods, fCSFprint, "", &ts, "<*>stringer test"},
{scsNoPmethods, fCSFprint, "", tps, "test"},
{scsNoPmethods, fCSFprint, "", &tps, "<*>stringer test"},
{scsMaxDepth, fCSFprint, "", dt, "{{<max>} [<max>] [<max>] map[<max>]}"},
{scsMaxDepth, fCSFdump, "", dt, "(spew_test.depthTester) {\n" +
" ic: (spew_test.indirCir1) {\n <max depth reached>\n },\n" +
" arr: ([1]string) (len=1 cap=1) {\n <max depth reached>\n },\n" +
" slice: ([]string) (len=1 cap=1) {\n <max depth reached>\n },\n" +
" m: (map[string]int) (len=1) {\n <max depth reached>\n }\n}\n"},
{scsContinue, fCSFprint, "", ts, "(stringer test) test"},
{scsContinue, fCSFdump, "", ts, "(spew_test.stringer) " +
"(len=4) (stringer test) \"test\"\n"},
{scsContinue, fCSFprint, "", te, "(error: 10) 10"},
{scsContinue, fCSFdump, "", te, "(spew_test.customError) " +
"(error: 10) 10\n"},
}
}
// TestSpew executes all of the tests described by spewTests.
func TestSpew(t *testing.T) {
initSpewTests()
t.Logf("Running %d tests", len(spewTests))
for i, test := range spewTests {
buf := new(bytes.Buffer)
switch test.f {
case fCSFdump:
test.cs.Fdump(buf, test.in)
case fCSFprint:
test.cs.Fprint(buf, test.in)
case fCSFprintf:
test.cs.Fprintf(buf, test.format, test.in)
case fCSFprintln:
test.cs.Fprintln(buf, test.in)
case fCSPrint:
b, err := redirStdout(func() { test.cs.Print(test.in) })
if err != nil {
t.Errorf("%v #%d %v", test.f, i, err)
continue
}
buf.Write(b)
case fCSPrintln:
b, err := redirStdout(func() { test.cs.Println(test.in) })
if err != nil {
t.Errorf("%v #%d %v", test.f, i, err)
continue
}
buf.Write(b)
case fCSSdump:
str := test.cs.Sdump(test.in)
buf.WriteString(str)
case fCSSprint:
str := test.cs.Sprint(test.in)
buf.WriteString(str)
case fCSSprintf:
str := test.cs.Sprintf(test.format, test.in)
buf.WriteString(str)
case fCSSprintln:
str := test.cs.Sprintln(test.in)
buf.WriteString(str)
case fCSErrorf:
err := test.cs.Errorf(test.format, test.in)
buf.WriteString(err.Error())
case fCSNewFormatter:
fmt.Fprintf(buf, test.format, test.cs.NewFormatter(test.in))
case fErrorf:
err := spew.Errorf(test.format, test.in)
buf.WriteString(err.Error())
case fFprint:
spew.Fprint(buf, test.in)
case fFprintln:
spew.Fprintln(buf, test.in)
case fPrint:
b, err := redirStdout(func() { spew.Print(test.in) })
if err != nil {
t.Errorf("%v #%d %v", test.f, i, err)
continue
}
buf.Write(b)
case fPrintln:
b, err := redirStdout(func() { spew.Println(test.in) })
if err != nil {
t.Errorf("%v #%d %v", test.f, i, err)
continue
}
buf.Write(b)
case fSdump:
str := spew.Sdump(test.in)
buf.WriteString(str)
case fSprint:
str := spew.Sprint(test.in)
buf.WriteString(str)
case fSprintf:
str := spew.Sprintf(test.format, test.in)
buf.WriteString(str)
case fSprintln:
str := spew.Sprintln(test.in)
buf.WriteString(str)
default:
t.Errorf("%v #%d unrecognized function", test.f, i)
continue
}
s := buf.String()
if test.want != s {
t.Errorf("ConfigState #%d\n got: %s want: %s", i, s, test.want)
continue
}
}
}

View File

@@ -1,82 +0,0 @@
// Copyright (c) 2013 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when both cgo is supported and "-tags testcgo" is added to the go test
// command line. This code should really only be in the dumpcgo_test.go file,
// but unfortunately Go will not allow cgo in test files, so this is a
// workaround to allow cgo types to be tested. This configuration is used
// because spew itself does not require cgo to run even though it does handle
// certain cgo types specially. Rather than forcing all clients to require cgo
// and an external C compiler just to run the tests, this scheme makes them
// optional.
// +build cgo,testcgo
package testdata
/*
#include <stdint.h>
typedef unsigned char custom_uchar_t;
char *ncp = 0;
char *cp = "test";
char ca[6] = {'t', 'e', 's', 't', '2', '\0'};
unsigned char uca[6] = {'t', 'e', 's', 't', '3', '\0'};
signed char sca[6] = {'t', 'e', 's', 't', '4', '\0'};
uint8_t ui8ta[6] = {'t', 'e', 's', 't', '5', '\0'};
custom_uchar_t tuca[6] = {'t', 'e', 's', 't', '6', '\0'};
*/
import "C"
// GetCgoNullCharPointer returns a null char pointer via cgo. This is only
// used for tests.
func GetCgoNullCharPointer() interface{} {
return C.ncp
}
// GetCgoCharPointer returns a char pointer via cgo. This is only used for
// tests.
func GetCgoCharPointer() interface{} {
return C.cp
}
// GetCgoCharArray returns a char array via cgo and the array's len and cap.
// This is only used for tests.
func GetCgoCharArray() (interface{}, int, int) {
return C.ca, len(C.ca), cap(C.ca)
}
// GetCgoUnsignedCharArray returns an unsigned char array via cgo and the
// array's len and cap. This is only used for tests.
func GetCgoUnsignedCharArray() (interface{}, int, int) {
return C.uca, len(C.uca), cap(C.uca)
}
// GetCgoSignedCharArray returns a signed char array via cgo and the array's len
// and cap. This is only used for tests.
func GetCgoSignedCharArray() (interface{}, int, int) {
return C.sca, len(C.sca), cap(C.sca)
}
// GetCgoUint8tArray returns a uint8_t array via cgo and the array's len and
// cap. This is only used for tests.
func GetCgoUint8tArray() (interface{}, int, int) {
return C.ui8ta, len(C.ui8ta), cap(C.ui8ta)
}
// GetCgoTypdefedUnsignedCharArray returns a typedefed unsigned char array via
// cgo and the array's len and cap. This is only used for tests.
func GetCgoTypdefedUnsignedCharArray() (interface{}, int, int) {
return C.tuca, len(C.tuca), cap(C.tuca)
}

View File

@@ -1,61 +0,0 @@
github.com/davecgh/go-spew/spew/dump.go dumpState.dump 100.00% (88/88)
github.com/davecgh/go-spew/spew/format.go formatState.format 100.00% (82/82)
github.com/davecgh/go-spew/spew/format.go formatState.formatPtr 100.00% (52/52)
github.com/davecgh/go-spew/spew/dump.go dumpState.dumpPtr 100.00% (44/44)
github.com/davecgh/go-spew/spew/dump.go dumpState.dumpSlice 100.00% (39/39)
github.com/davecgh/go-spew/spew/common.go handleMethods 100.00% (30/30)
github.com/davecgh/go-spew/spew/common.go printHexPtr 100.00% (18/18)
github.com/davecgh/go-spew/spew/common.go unsafeReflectValue 100.00% (13/13)
github.com/davecgh/go-spew/spew/format.go formatState.constructOrigFormat 100.00% (12/12)
github.com/davecgh/go-spew/spew/dump.go fdump 100.00% (11/11)
github.com/davecgh/go-spew/spew/format.go formatState.Format 100.00% (11/11)
github.com/davecgh/go-spew/spew/common.go init 100.00% (10/10)
github.com/davecgh/go-spew/spew/common.go printComplex 100.00% (9/9)
github.com/davecgh/go-spew/spew/common.go valuesSorter.Less 100.00% (8/8)
github.com/davecgh/go-spew/spew/format.go formatState.buildDefaultFormat 100.00% (7/7)
github.com/davecgh/go-spew/spew/format.go formatState.unpackValue 100.00% (5/5)
github.com/davecgh/go-spew/spew/dump.go dumpState.indent 100.00% (4/4)
github.com/davecgh/go-spew/spew/common.go catchPanic 100.00% (4/4)
github.com/davecgh/go-spew/spew/config.go ConfigState.convertArgs 100.00% (4/4)
github.com/davecgh/go-spew/spew/spew.go convertArgs 100.00% (4/4)
github.com/davecgh/go-spew/spew/format.go newFormatter 100.00% (3/3)
github.com/davecgh/go-spew/spew/dump.go Sdump 100.00% (3/3)
github.com/davecgh/go-spew/spew/common.go printBool 100.00% (3/3)
github.com/davecgh/go-spew/spew/common.go sortValues 100.00% (3/3)
github.com/davecgh/go-spew/spew/config.go ConfigState.Sdump 100.00% (3/3)
github.com/davecgh/go-spew/spew/dump.go dumpState.unpackValue 100.00% (3/3)
github.com/davecgh/go-spew/spew/spew.go Printf 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Println 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Sprint 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Sprintf 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Sprintln 100.00% (1/1)
github.com/davecgh/go-spew/spew/common.go printFloat 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go NewDefaultConfig 100.00% (1/1)
github.com/davecgh/go-spew/spew/common.go printInt 100.00% (1/1)
github.com/davecgh/go-spew/spew/common.go printUint 100.00% (1/1)
github.com/davecgh/go-spew/spew/common.go valuesSorter.Len 100.00% (1/1)
github.com/davecgh/go-spew/spew/common.go valuesSorter.Swap 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Errorf 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Fprint 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Fprintf 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Fprintln 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Print 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Printf 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Println 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Sprint 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Sprintf 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Sprintln 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.NewFormatter 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Fdump 100.00% (1/1)
github.com/davecgh/go-spew/spew/config.go ConfigState.Dump 100.00% (1/1)
github.com/davecgh/go-spew/spew/dump.go Fdump 100.00% (1/1)
github.com/davecgh/go-spew/spew/dump.go Dump 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Fprintln 100.00% (1/1)
github.com/davecgh/go-spew/spew/format.go NewFormatter 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Errorf 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Fprint 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Fprintf 100.00% (1/1)
github.com/davecgh/go-spew/spew/spew.go Print 100.00% (1/1)
github.com/davecgh/go-spew/spew ------------------------------- 100.00% (505/505)

View File

@@ -1 +0,0 @@
.DS_Store

View File

@@ -1,149 +0,0 @@
# Logd
高性能日志系统每日24时自动打包前一天数据自动删除过期数据30天自动邮件告警。
#### Bechmark
```
BenchmarkLogFileChan-8 500000 2265 ns/op
BenchmarkLogFile-8 300000 4393 ns/op
BenchmarkStandardFile-8 1000000 2216 ns/op
BenchmarkLogFileChanMillion-8 1000000 2319 ns/op
BenchmarkLogFileMillion-8 1000000 4397 ns/op
BenchmarkStandardFileMillion-8 1000000 2232 ns/op
```
#### Print Level
```
Ldebug = 1 << iota //
Linfo //
Lwarn //
Lerror //
Lfatal //
logd.Printf()
logd.Print()
logd.Debugf()
logd.Debug()
logd.Infof()
logd.Info()
logd.Warnf()
logd.Warn()
logd.Errorf()
logd.Error()
logd.Fatalf()
logd.Fatal()
```
5种日志等级12种打印方法完全理解你记录日志的需求。
```
Ldebug < Linfo < Lwarn < Lerror < Lfatal
```
通过`SetLevel()`方法设置logd.SetLevel(Lwarn)系统只会打印大于等于Lwarn的日志。
> 注意logd.Printf() 和 logd.Print() 不论等级为什么都会输出,请悉知。
#### Print Option
系统提供多种格式输出选项:
```
Lasync // 异步输出日志
Ldate // like 2006/01/02
Ltime // like 15:04:05
Lmicroseconds // like 15:04:05.123123
Llongfile // like /a/b/c/d.go:23
Lshortfile // like d.go:23
LUTC // 时间utc输出
Ldaily // 按天归档
默认提供:
LstdFlags // 2006/01/02 15:04:05.123123, /a/b/c/d.go:23
```
#### 使用方法
1、默认方式
默认方式使用以下配置选项:
```
// 2006/01/02 15:04:05.123123, /a/b/c/d.go:23
Lall = Ldebug | Linfo | Lwarn | Lerror | Lfatal
LstdFlags = Lall | Ldate | Lmicroseconds | Lshortfile
```
这里会打印所有等级日志,打印日志格式为`2006/01/02 15:04:05.123123, /a/b/c/d.go:23`
可以通过`logd.SetLevel(level)`方式调整日志等级。`logd.SetOutput(writer)`输出日志到别的地方。例子:
```
package main
import (
"fmt"
"os"
"github.com/deepzz0/logd"
)
func main() {
logd.Printf("Printf: foo\n")
logd.Print("Print: foo")
logd.Debugf("Debugf: foo\n")
logd.Debug("Debug: foo")
logd.Errorf("Errorf: foo\n")
logd.Error("Error: foo")
// 改变输出等级
logd.SetLevel(logd.Lerror)
// 不论等级如何都会输出
fmt.Println("----- 改变日志等级为Lerror -----")
logd.Printf("Printf: foo\n")
logd.Print("Print: foo")
logd.Debugf("Debugf: foo\n")
logd.Debug("Debug: foo")
logd.Errorf("Errorf: foo\n")
logd.Error("Error: foo")
fmt.Println("----- 日志等级为Lerror并写入到test.log中 -----")
f, err := os.Create("./test.log")
if err != nil {
panic(err)
}
defer f.Close()
logd.SetOutput(f)
logd.Printf("Printf: foo\n")
logd.Print("Print: foo")
logd.Debugf("Debugf: foo\n")
logd.Debug("Debug: foo")
logd.Errorf("Errorf: foo\n")
logd.Error("Error: foo")
}
```
输出如下:
![logd_print](http://7xokm2.com1.z0.glb.clouddn.com/img/logd_print.png)
1、自定义配置
推荐需要将日志保存下来的用户使用。
```
Flags := Lwarn | Lerror | Lfatal | Ldate | Ltime | Lshortfile | Ldaily | Lasync
f, _ := os.OpenFile("testdata/onlyfile.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0666)
log := New(LogOption{
Out: f,
Flag: Flags,
LogDir: "testdata",
ChannelLen: 1000,
})
```
* 输出日志等级Lwarn | Lerror | Lfatal
* 输出日志格式Ldate | Ltime | Lshortfile
* 按日归档Ldaily
* 异步输出Lasync
它会将每天的日志,采用 gzip 压缩,并保留 30 天以内的日志。自动删除 30 以前的日志。

View File

@@ -1,499 +0,0 @@
package logd
import (
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
"time"
)
const (
Ldebug = 1 << iota //
Linfo //
Lwarn //
Lerror //
Lfatal //
Ldate // 如2006/01/02
Ltime // 如15:04:05
Lmicroseconds // 如15:04:05.123123
Llongfile // 如:/a/b/c/d.go:23
Lshortfile // 如d.go:23
LUTC // 时间utc输出
LAsync // 异步输出日志
LDaily // 按日归档保留30天
//
// 建议标准格式为: LVEVL | FORMAT | ROTATE | ASYNC
//
Lall = Ldebug | Linfo | Lwarn | Lerror | Lfatal
// 2006/01/02 15:04:05.123123, d.go:23
LstdFlags = Lall | Ldate | Lmicroseconds | Lshortfile
// 2006/01/02 15:04:05, d.go:23
LwarnFlags = Lwarn | Lerror | Lfatal | Ldate | Ltime | Lshortfile | LDaily | LAsync
)
// 等级显示字符串
var levelMaps = map[int]string{
Ldebug: "DEBUG",
Linfo: "INFO",
Lwarn: "WARN",
Lerror: "ERROR",
Lfatal: "FATAL",
}
// 日志结构体
type Logger struct {
mu sync.Mutex
obj string // 打印日志对象
out io.Writer // 输出
in chan []byte // channel
dir string // 输出目录
flag int // 标志
mails Emailer // 告警邮件
}
// 日志配置项
type LogOption struct {
Out io.Writer // 输出writer
LogDir string // 日志输出目录,为空不输出到文件
ChannelLen int // channel
Flag int // 标志位
Mails Emailer // 告警邮件
}
func osSep() string {
var sep string
if os.IsPathSeparator('\\') {
sep = "\\"
} else {
sep = "/"
}
return sep
}
// 新建日志打印器
func New(option LogOption) *Logger {
wd, _ := os.Getwd()
index := strings.LastIndex(wd, osSep())
logger := &Logger{
obj: wd[index+1:],
out: option.Out,
in: make(chan []byte, option.ChannelLen),
dir: option.LogDir,
flag: option.Flag,
mails: option.Mails,
}
if logger.flag|LAsync != 0 {
go logger.receive()
}
return logger
}
func (l *Logger) receive() {
today := time.Now()
var file *os.File
var err error
for data := range l.in {
if l.dir != "" && (file == nil || today.Day() != time.Now().Day()) {
l.mu.Lock()
today = time.Now()
file, err = os.OpenFile(fmt.Sprintf("%s/%s_%s.log", l.dir, l.obj, today.Format("2006-01-02")), os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0666)
if err != nil {
panic(err)
}
l.mu.Unlock()
if l.flag&LDaily != 0 {
go l.rotate(today)
}
}
if file != nil {
file.Write(data)
}
if l.out != nil {
l.out.Write(data)
}
}
}
// 压缩
func (l *Logger) rotate(t time.Time) {
filepath.Walk(l.dir, func(path string, f os.FileInfo, err error) error {
if err != nil {
return err
}
if int(t.Sub(f.ModTime()).Hours()) > 24 {
if strings.HasSuffix(f.Name(), ".log") {
cmd := exec.Command("gzip", path)
err = cmd.Run()
if err != nil {
return err
}
}
}
if int(t.Sub(f.ModTime()).Hours()) > 24*30 {
if err := os.Remove(path); err != nil {
return err
}
}
return nil
})
}
// 日志基本格式: date, time(hour:minute:second:microsecond), level, module, shortfile:line, <content>
func (l *Logger) Output(lvl int, calldepth int, content string) error {
_, file, line, ok := runtime.Caller(calldepth)
if !ok {
return nil
}
var buf []byte
l.formatHeader(&buf, lvl, time.Now(), file, line)
buf = append(buf, content...)
if l.mails != nil && lvl >= Lwarn {
go l.mails.SendMail(l.obj, buf)
}
// 异步输出
if l.flag&LAsync != 0 {
l.in <- buf
} else {
l.mu.Lock()
defer l.mu.Unlock()
l.out.Write(buf)
}
return nil
}
// 整理日志header
func (l *Logger) formatHeader(buf *[]byte, lvl int, t time.Time, file string, line int) {
if l.flag&LUTC != 0 {
t = t.UTC()
}
if l.flag&(Ldate|Ltime|Lmicroseconds) != 0 {
if l.flag&Ldate != 0 {
year, month, day := t.Date()
itoa(buf, year, 4)
*buf = append(*buf, '/')
itoa(buf, int(month), 2)
*buf = append(*buf, '/')
itoa(buf, day, 2)
*buf = append(*buf, ' ')
}
if l.flag&(Ltime|Lmicroseconds) != 0 {
hour, min, sec := t.Clock()
itoa(buf, hour, 2)
*buf = append(*buf, ':')
itoa(buf, min, 2)
*buf = append(*buf, ':')
itoa(buf, sec, 2)
if l.flag&Lmicroseconds != 0 {
*buf = append(*buf, '.')
itoa(buf, t.Nanosecond()/1e3, 6)
}
*buf = append(*buf, ' ')
}
}
*buf = append(*buf, getColorLevel(levelMaps[lvl])...)
*buf = append(*buf, ' ')
if l.flag&(Lshortfile|Llongfile) != 0 {
if l.flag&Lshortfile != 0 {
short := file
for i := len(file) - 1; i > 0; i-- {
if file[i] == '/' {
short = file[i+1:]
break
}
}
file = short
}
*buf = append(*buf, file...)
*buf = append(*buf, ':')
itoa(buf, line, -1)
*buf = append(*buf, ":"...)
}
}
// 等待flush channel
func (l *Logger) WaitFlush() {
for {
if len(l.in) > 0 {
time.Sleep(time.Nanosecond * 50)
} else {
break
}
}
}
// print
func (l *Logger) Printf(format string, v ...interface{}) {
l.Output(Linfo, 2, fmt.Sprintf(format, v...))
}
func (l *Logger) Print(v ...interface{}) {
l.Output(Linfo, 2, fmt.Sprintf(smartFormat(v...), v...))
}
// debug
func (l *Logger) Debugf(format string, v ...interface{}) {
if Ldebug&l.flag != 0 {
l.Output(Ldebug, 2, fmt.Sprintf(format, v...))
}
}
func (l *Logger) Debug(v ...interface{}) {
if Ldebug&l.flag != 0 {
l.Output(Ldebug, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
// info
func (l *Logger) Infof(format string, v ...interface{}) {
if Linfo&l.flag != 0 {
l.Output(Linfo, 2, fmt.Sprintf(format, v...))
}
}
func (l *Logger) Info(v ...interface{}) {
if Linfo&l.flag != 0 {
l.Output(Linfo, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
// warn
func (l *Logger) Warnf(format string, v ...interface{}) {
if Lwarn&l.flag != 0 {
l.Output(Lwarn, 2, fmt.Sprintf(format, v...))
}
}
func (l *Logger) Warn(v ...interface{}) {
if Lwarn&l.flag != 0 {
l.Output(Lwarn, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
// error
func (l *Logger) Errorf(format string, v ...interface{}) {
if Lerror&l.flag != 0 {
l.Output(Lerror, 2, fmt.Sprintf(format, v...)+CallerStack())
}
}
func (l *Logger) Error(v ...interface{}) {
if Lerror&l.flag != 0 {
l.Output(Lerror, 2, fmt.Sprintf(smartFormat(v...), v...)+CallerStack())
}
}
// fatal
func (l *Logger) Fatalf(format string, v ...interface{}) {
l.Output(Lfatal, 2, fmt.Sprintf(format, v...))
os.Exit(1)
}
func (l *Logger) Fatal(v ...interface{}) {
l.Output(Lfatal, 2, fmt.Sprintf(smartFormat(v...), v...))
os.Exit(1)
}
func (l *Logger) Breakpoint() {
l.Output(Ldebug, 3, fmt.Sprintln("breakpoint"))
}
// 设置日志目录
func (l *Logger) SetLogDir(dir string) {
l.mu.Lock()
defer l.mu.Unlock()
l.dir = dir
}
// 设置日志对象名称
func (l *Logger) SetObj(obj string) {
l.mu.Lock()
defer l.mu.Unlock()
l.obj = obj
}
// 改变日志输出writer
func (l *Logger) SetOutput(out io.Writer) {
l.mu.Lock()
defer l.mu.Unlock()
l.out = out
}
// 设置日志等级
func (l *Logger) SetLevel(lvl int) {
l.mu.Lock()
defer l.mu.Unlock()
var i uint
for i = 0; i < uint(len(levelMaps)); i++ {
if lvl&1 != 0 {
break
}
lvl >>= 1
}
l.flag = (l.flag >> i) | (Lall >> i)
l.flag <<= i
}
// standard wrapper
var Std = New(LogOption{Out: os.Stdout, Flag: LstdFlags})
func Printf(format string, v ...interface{}) {
Std.Output(Linfo, 2, fmt.Sprintf(format, v...))
}
func Print(v ...interface{}) {
Std.Output(Linfo, 2, fmt.Sprintf(smartFormat(v...), v...))
}
func Debugf(format string, v ...interface{}) {
if Ldebug&Std.flag != 0 {
Std.Output(Ldebug, 2, fmt.Sprintf(format, v...))
}
}
func Debug(v ...interface{}) {
if Ldebug&Std.flag != 0 {
Std.Output(Ldebug, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
func Infof(format string, v ...interface{}) {
if Linfo&Std.flag != 0 {
Std.Output(Linfo, 2, fmt.Sprintf(format, v...))
}
}
func Info(v ...interface{}) {
if Linfo&Std.flag != 0 {
Std.Output(Linfo, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
func Warnf(format string, v ...interface{}) {
if Lwarn&Std.flag != 0 {
Std.Output(Lwarn, 2, fmt.Sprintf(format, v...))
}
}
func Warn(v ...interface{}) {
if Lwarn&Std.flag != 0 {
Std.Output(Lwarn, 2, fmt.Sprintf(smartFormat(v...), v...))
}
}
func Errorf(format string, v ...interface{}) {
if Lerror&Std.flag != 0 {
Std.Output(Lerror, 2, fmt.Sprintf(format, v...)+CallerStack())
}
}
func Error(v ...interface{}) {
if Lerror&Std.flag != 0 {
Std.Output(Lerror, 2, fmt.Sprintf(smartFormat(v...), v...)+CallerStack())
}
}
func Fatalf(format string, v ...interface{}) {
Std.Output(Lfatal, 2, fmt.Sprintf(format, v...)+CallerStack())
os.Exit(1)
}
func Fatal(v ...interface{}) {
Std.Output(Lfatal, 2, fmt.Sprintf(smartFormat(v...), v...)+CallerStack())
os.Exit(1)
}
func Breakpoint() {
Std.Breakpoint()
}
func SetLevel(lvl int) {
Std.SetLevel(lvl)
}
func SetOutput(w io.Writer) {
Std.SetOutput(w)
}
func SetObj(obj string) {
Std.SetObj(obj)
}
///////////////////////////////////////////////////////////////////////////////////////////
func smartFormat(v ...interface{}) string {
format := ""
for i := 0; i < len(v); i++ {
format += " %v"
}
format += "\n"
return format
}
// Cheap integer to fixed-width decimal ASCII. Give a negative width to avoid zero-padding.
func itoa(buf *[]byte, i int, wid int) {
// Assemble decimal in reverse order.
var b [20]byte
bp := len(b) - 1
for i >= 10 || wid > 1 {
wid--
q := i / 10
b[bp] = byte('0' + i - q*10)
bp--
i = q
}
// i < 10
b[bp] = byte('0' + i)
*buf = append(*buf, b[bp:]...)
}
const (
Gray = uint8(iota + 90)
Red
Green
Yellow
Blue
Magenta
)
// getColorLevel returns colored level string by given level.
func getColorLevel(level string) string {
level = strings.ToUpper(level)
switch level {
case "DEBUG":
return fmt.Sprintf("\033[%dm[%5s]\033[0m", Green, level)
case "INFO":
return fmt.Sprintf("\033[%dm[%5s]\033[0m", Blue, level)
case "WARN":
return fmt.Sprintf("\033[%dm[%5s]\033[0m", Magenta, level)
case "ERROR":
return fmt.Sprintf("\033[%dm[%5s]\033[0m", Yellow, level)
case "FATAL":
return fmt.Sprintf("\033[%dm[%5s]\033[0m", Red, level)
default:
return level
}
}
func CallerStack() string {
var caller_str string
for skip := 2; ; skip++ {
// 获取调用者的信息
pc, file, line, ok := runtime.Caller(skip)
if !ok {
break
}
func_name := runtime.FuncForPC(pc).Name()
caller_str += "Func : " + func_name + "\nFile:" + file + ":" + fmt.Sprint(line) + "\n"
}
return caller_str
}

View File

@@ -1,107 +0,0 @@
package logd
import (
"log"
"os"
"testing"
)
func TestLog(t *testing.T) {
Printf("Printf: foo\n")
Print("Print: foo")
SetLevel(Ldebug)
Debugf("Debugf: foo\n")
Debug("Debug: foo")
Infof("Infof: foo\n")
Info("Info: foo")
Errorf("Errorf: foo\n")
Error("Error: foo")
SetLevel(Lerror)
Debugf("Debugf: foo\n")
Debug("Debug: foo")
Infof("Infof: foo\n")
Info("Info: foo")
Errorf("Errorf: foo\n")
Error("Error: foo")
}
func BenchmarkLogFileChan(b *testing.B) {
log := New(LogOption{
Flag: LAsync | Ldate | Ltime | Lshortfile,
LogDir: "testdata",
ChannelLen: 1000,
})
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
log.WaitFlush()
}
func BenchmarkLogFile(b *testing.B) {
f, _ := os.OpenFile("testdata/onlyfile.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0666)
log := New(LogOption{
Out: f,
Flag: Ldate | Ltime | Lshortfile,
LogDir: "testdata",
ChannelLen: 1000,
})
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
log.WaitFlush()
}
func BenchmarkStandardFile(b *testing.B) {
f, _ := os.OpenFile("testdata/logfile.log", os.O_CREATE|os.O_RDWR|os.O_APPEND, 0666)
log := log.New(f, "", log.LstdFlags)
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
}
func BenchmarkLogFileChanMillion(b *testing.B) {
log := New(LogOption{
Flag: LAsync | Ldate | Ltime | Lshortfile,
LogDir: "testdata",
ChannelLen: 1000,
})
b.N = 1000000
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
log.WaitFlush()
}
func BenchmarkLogFileMillion(b *testing.B) {
f, _ := os.OpenFile("testdata/onlyfilemillion.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0666)
log := New(LogOption{
Out: f,
Flag: Ldate | Ltime | Lshortfile,
LogDir: "testdata",
ChannelLen: 1000,
})
b.N = 1000000
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
log.WaitFlush()
}
func BenchmarkStandardFileMillion(b *testing.B) {
f, _ := os.OpenFile("testdata/logfilemillion.log", os.O_CREATE|os.O_RDWR|os.O_APPEND, 0666)
log := log.New(f, "", log.LstdFlags)
b.N = 1000000
for i := 0; i < b.N; i++ {
log.Print("testing this is a testing about benchmark")
}
}

View File

@@ -1,80 +0,0 @@
package logd
import (
"crypto/tls"
"fmt"
"net/smtp"
"strings"
)
type Emailer interface {
SendMail(fromname string, msg []byte) error
}
type Smtp struct {
From string // 发件箱number@qq.com
Key string // 发件密钥peerdmnoqirqbiaa
Host string // 主机地址smtp.example.com
Port string // 主机端口465
To []string // 发送给object@163.com
Subject string // 标题:警告邮件[goblog]
}
func (s *Smtp) SendMail(fromname string, msg []byte) error {
// 新建连接
conn, err := tls.Dial("tcp", s.Host+":"+s.Port, nil)
if err != nil {
return err
}
// 新建客户端
client, err := smtp.NewClient(conn, s.Host)
if err != nil {
return err
}
// 获取授权
auth := smtp.PlainAuth("", s.From, s.Key, s.Host)
if err = client.Auth(auth); err != nil {
return err
}
// 向服务器发送MAIL命令
if err = client.Mail(s.From); err != nil {
return err
}
// 准备数据
str := fmt.Sprint(
"To:", strings.Join(s.To, ","),
"\r\nFrom:", fmt.Sprintf("%s<%s>", fromname, s.From),
"\r\nSubject:", s.Subject,
"\r\n", "Content-Type:text/plain;charset=UTF-8",
"\r\n\r\n",
)
data := make([]byte, len(str)+len(msg))
copy(data, []byte(str))
copy(data[len(str):], msg)
// RCPT
for _, d := range s.To {
if err := client.Rcpt(d); err != nil {
return err
}
}
// 获取WriteCloser
wc, err := client.Data()
if err != nil {
return err
}
// 写入数据
_, err = wc.Write(data)
if err != nil {
return err
}
wc.Close()
return client.Quit()
}

View File

@@ -1,20 +0,0 @@
// Package logd provides ...
package logd
import "testing"
func TestSmtpSendMail(t *testing.T) {
s := &Smtp{
From: "120735581@qq.com",
Key: "peerdmnoqirqbiaa",
Host: "smtp.qq.com",
Port: "465",
To: []string{"a120735581@foxmail.com"},
Subject: "test email from logd",
}
err := s.SendMail("test", []byte("hello world"))
if err != nil {
t.Error(err)
}
}

View File

@@ -1,5 +0,0 @@
Ask questions at
[StackOverflow](https://stackoverflow.com/questions/ask?tags=go+redis).
[Open an issue](https://github.com/garyburd/redigo/issues/new) to discuss your
plans before doing any work on Redigo.

View File

@@ -1 +0,0 @@
Ask questions at https://stackoverflow.com/questions/ask?tags=go+redis

View File

@@ -1,19 +0,0 @@
language: go
sudo: false
services:
- redis-server
go:
- 1.4
- 1.5
- 1.6
- 1.7
- 1.8
- 1.9
- tip
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d .)
- go vet $(go list ./... | grep -v /vendor/)
- go test -v -race ./...

View File

@@ -1,175 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
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including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
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"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
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of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.

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@@ -1,51 +0,0 @@
Redigo
======
[![Build Status](https://travis-ci.org/garyburd/redigo.svg?branch=master)](https://travis-ci.org/garyburd/redigo)
[![GoDoc](https://godoc.org/github.com/garyburd/redigo/redis?status.svg)](https://godoc.org/github.com/garyburd/redigo/redis)
Redigo is a [Go](http://golang.org/) client for the [Redis](http://redis.io/) database.
Features
-------
* A [Print-like](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Executing_Commands) API with support for all Redis commands.
* [Pipelining](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Pipelining), including pipelined transactions.
* [Publish/Subscribe](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Publish_and_Subscribe).
* [Connection pooling](http://godoc.org/github.com/garyburd/redigo/redis#Pool).
* [Script helper type](http://godoc.org/github.com/garyburd/redigo/redis#Script) with optimistic use of EVALSHA.
* [Helper functions](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Reply_Helpers) for working with command replies.
Documentation
-------------
- [API Reference](http://godoc.org/github.com/garyburd/redigo/redis)
- [FAQ](https://github.com/garyburd/redigo/wiki/FAQ)
- [Examples](https://godoc.org/github.com/garyburd/redigo/redis#pkg-examples)
Installation
------------
Install Redigo using the "go get" command:
go get github.com/garyburd/redigo/redis
The Go distribution is Redigo's only dependency.
Related Projects
----------------
- [rafaeljusto/redigomock](https://godoc.org/github.com/rafaeljusto/redigomock) - A mock library for Redigo.
- [chasex/redis-go-cluster](https://github.com/chasex/redis-go-cluster) - A Redis cluster client implementation.
- [FZambia/go-sentinel](https://github.com/FZambia/go-sentinel) - Redis Sentinel support for Redigo
- [PuerkitoBio/redisc](https://github.com/PuerkitoBio/redisc) - Redis Cluster client built on top of Redigo
Contributing
------------
See [CONTRIBUTING.md](https://github.com/garyburd/redigo/blob/master/.github/CONTRIBUTING.md).
License
-------
Redigo is available under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html).

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@@ -1,54 +0,0 @@
// Copyright 2014 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package internal // import "github.com/garyburd/redigo/internal"
import (
"strings"
)
const (
WatchState = 1 << iota
MultiState
SubscribeState
MonitorState
)
type CommandInfo struct {
Set, Clear int
}
var commandInfos = map[string]CommandInfo{
"WATCH": {Set: WatchState},
"UNWATCH": {Clear: WatchState},
"MULTI": {Set: MultiState},
"EXEC": {Clear: WatchState | MultiState},
"DISCARD": {Clear: WatchState | MultiState},
"PSUBSCRIBE": {Set: SubscribeState},
"SUBSCRIBE": {Set: SubscribeState},
"MONITOR": {Set: MonitorState},
}
func init() {
for n, ci := range commandInfos {
commandInfos[strings.ToLower(n)] = ci
}
}
func LookupCommandInfo(commandName string) CommandInfo {
if ci, ok := commandInfos[commandName]; ok {
return ci
}
return commandInfos[strings.ToUpper(commandName)]
}

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@@ -1,27 +0,0 @@
package internal
import "testing"
func TestLookupCommandInfo(t *testing.T) {
for _, n := range []string{"watch", "WATCH", "wAtch"} {
if LookupCommandInfo(n) == (CommandInfo{}) {
t.Errorf("LookupCommandInfo(%q) = CommandInfo{}, expected non-zero value", n)
}
}
}
func benchmarkLookupCommandInfo(b *testing.B, names ...string) {
for i := 0; i < b.N; i++ {
for _, c := range names {
LookupCommandInfo(c)
}
}
}
func BenchmarkLookupCommandInfoCorrectCase(b *testing.B) {
benchmarkLookupCommandInfo(b, "watch", "WATCH", "monitor", "MONITOR")
}
func BenchmarkLookupCommandInfoMixedCase(b *testing.B) {
benchmarkLookupCommandInfo(b, "wAtch", "WeTCH", "monItor", "MONiTOR")
}

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@@ -1,68 +0,0 @@
// Copyright 2014 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package redistest contains utilities for writing Redigo tests.
package redistest
import (
"errors"
"time"
"github.com/garyburd/redigo/redis"
)
type testConn struct {
redis.Conn
}
func (t testConn) Close() error {
_, err := t.Conn.Do("SELECT", "9")
if err != nil {
return nil
}
_, err = t.Conn.Do("FLUSHDB")
if err != nil {
return err
}
return t.Conn.Close()
}
// Dial dials the local Redis server and selects database 9. To prevent
// stomping on real data, DialTestDB fails if database 9 contains data. The
// returned connection flushes database 9 on close.
func Dial() (redis.Conn, error) {
c, err := redis.DialTimeout("tcp", ":6379", 0, 1*time.Second, 1*time.Second)
if err != nil {
return nil, err
}
_, err = c.Do("SELECT", "9")
if err != nil {
c.Close()
return nil, err
}
n, err := redis.Int(c.Do("DBSIZE"))
if err != nil {
c.Close()
return nil, err
}
if n != 0 {
c.Close()
return nil, errors.New("database #9 is not empty, test can not continue")
}
return testConn{c}, nil
}

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@@ -1,673 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"bufio"
"bytes"
"crypto/tls"
"errors"
"fmt"
"io"
"net"
"net/url"
"regexp"
"strconv"
"sync"
"time"
)
var (
_ ConnWithTimeout = (*conn)(nil)
)
// conn is the low-level implementation of Conn
type conn struct {
// Shared
mu sync.Mutex
pending int
err error
conn net.Conn
// Read
readTimeout time.Duration
br *bufio.Reader
// Write
writeTimeout time.Duration
bw *bufio.Writer
// Scratch space for formatting argument length.
// '*' or '$', length, "\r\n"
lenScratch [32]byte
// Scratch space for formatting integers and floats.
numScratch [40]byte
}
// DialTimeout acts like Dial but takes timeouts for establishing the
// connection to the server, writing a command and reading a reply.
//
// Deprecated: Use Dial with options instead.
func DialTimeout(network, address string, connectTimeout, readTimeout, writeTimeout time.Duration) (Conn, error) {
return Dial(network, address,
DialConnectTimeout(connectTimeout),
DialReadTimeout(readTimeout),
DialWriteTimeout(writeTimeout))
}
// DialOption specifies an option for dialing a Redis server.
type DialOption struct {
f func(*dialOptions)
}
type dialOptions struct {
readTimeout time.Duration
writeTimeout time.Duration
dialer *net.Dialer
dial func(network, addr string) (net.Conn, error)
db int
password string
useTLS bool
skipVerify bool
tlsConfig *tls.Config
}
// DialReadTimeout specifies the timeout for reading a single command reply.
func DialReadTimeout(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
do.readTimeout = d
}}
}
// DialWriteTimeout specifies the timeout for writing a single command.
func DialWriteTimeout(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
do.writeTimeout = d
}}
}
// DialConnectTimeout specifies the timeout for connecting to the Redis server when
// no DialNetDial option is specified.
func DialConnectTimeout(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
do.dialer.Timeout = d
}}
}
// DialKeepAlive specifies the keep-alive period for TCP connections to the Redis server
// when no DialNetDial option is specified.
// If zero, keep-alives are not enabled. If no DialKeepAlive option is specified then
// the default of 5 minutes is used to ensure that half-closed TCP sessions are detected.
func DialKeepAlive(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
do.dialer.KeepAlive = d
}}
}
// DialNetDial specifies a custom dial function for creating TCP
// connections, otherwise a net.Dialer customized via the other options is used.
// DialNetDial overrides DialConnectTimeout and DialKeepAlive.
func DialNetDial(dial func(network, addr string) (net.Conn, error)) DialOption {
return DialOption{func(do *dialOptions) {
do.dial = dial
}}
}
// DialDatabase specifies the database to select when dialing a connection.
func DialDatabase(db int) DialOption {
return DialOption{func(do *dialOptions) {
do.db = db
}}
}
// DialPassword specifies the password to use when connecting to
// the Redis server.
func DialPassword(password string) DialOption {
return DialOption{func(do *dialOptions) {
do.password = password
}}
}
// DialTLSConfig specifies the config to use when a TLS connection is dialed.
// Has no effect when not dialing a TLS connection.
func DialTLSConfig(c *tls.Config) DialOption {
return DialOption{func(do *dialOptions) {
do.tlsConfig = c
}}
}
// DialTLSSkipVerify disables server name verification when connecting over
// TLS. Has no effect when not dialing a TLS connection.
func DialTLSSkipVerify(skip bool) DialOption {
return DialOption{func(do *dialOptions) {
do.skipVerify = skip
}}
}
// DialUseTLS specifies whether TLS should be used when connecting to the
// server. This option is ignore by DialURL.
func DialUseTLS(useTLS bool) DialOption {
return DialOption{func(do *dialOptions) {
do.useTLS = useTLS
}}
}
// Dial connects to the Redis server at the given network and
// address using the specified options.
func Dial(network, address string, options ...DialOption) (Conn, error) {
do := dialOptions{
dialer: &net.Dialer{
KeepAlive: time.Minute * 5,
},
}
for _, option := range options {
option.f(&do)
}
if do.dial == nil {
do.dial = do.dialer.Dial
}
netConn, err := do.dial(network, address)
if err != nil {
return nil, err
}
if do.useTLS {
var tlsConfig *tls.Config
if do.tlsConfig == nil {
tlsConfig = &tls.Config{InsecureSkipVerify: do.skipVerify}
} else {
tlsConfig = cloneTLSConfig(do.tlsConfig)
}
if tlsConfig.ServerName == "" {
host, _, err := net.SplitHostPort(address)
if err != nil {
netConn.Close()
return nil, err
}
tlsConfig.ServerName = host
}
tlsConn := tls.Client(netConn, tlsConfig)
if err := tlsConn.Handshake(); err != nil {
netConn.Close()
return nil, err
}
netConn = tlsConn
}
c := &conn{
conn: netConn,
bw: bufio.NewWriter(netConn),
br: bufio.NewReader(netConn),
readTimeout: do.readTimeout,
writeTimeout: do.writeTimeout,
}
if do.password != "" {
if _, err := c.Do("AUTH", do.password); err != nil {
netConn.Close()
return nil, err
}
}
if do.db != 0 {
if _, err := c.Do("SELECT", do.db); err != nil {
netConn.Close()
return nil, err
}
}
return c, nil
}
var pathDBRegexp = regexp.MustCompile(`/(\d*)\z`)
// DialURL connects to a Redis server at the given URL using the Redis
// URI scheme. URLs should follow the draft IANA specification for the
// scheme (https://www.iana.org/assignments/uri-schemes/prov/redis).
func DialURL(rawurl string, options ...DialOption) (Conn, error) {
u, err := url.Parse(rawurl)
if err != nil {
return nil, err
}
if u.Scheme != "redis" && u.Scheme != "rediss" {
return nil, fmt.Errorf("invalid redis URL scheme: %s", u.Scheme)
}
// As per the IANA draft spec, the host defaults to localhost and
// the port defaults to 6379.
host, port, err := net.SplitHostPort(u.Host)
if err != nil {
// assume port is missing
host = u.Host
port = "6379"
}
if host == "" {
host = "localhost"
}
address := net.JoinHostPort(host, port)
if u.User != nil {
password, isSet := u.User.Password()
if isSet {
options = append(options, DialPassword(password))
}
}
match := pathDBRegexp.FindStringSubmatch(u.Path)
if len(match) == 2 {
db := 0
if len(match[1]) > 0 {
db, err = strconv.Atoi(match[1])
if err != nil {
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
}
}
if db != 0 {
options = append(options, DialDatabase(db))
}
} else if u.Path != "" {
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
}
options = append(options, DialUseTLS(u.Scheme == "rediss"))
return Dial("tcp", address, options...)
}
// NewConn returns a new Redigo connection for the given net connection.
func NewConn(netConn net.Conn, readTimeout, writeTimeout time.Duration) Conn {
return &conn{
conn: netConn,
bw: bufio.NewWriter(netConn),
br: bufio.NewReader(netConn),
readTimeout: readTimeout,
writeTimeout: writeTimeout,
}
}
func (c *conn) Close() error {
c.mu.Lock()
err := c.err
if c.err == nil {
c.err = errors.New("redigo: closed")
err = c.conn.Close()
}
c.mu.Unlock()
return err
}
func (c *conn) fatal(err error) error {
c.mu.Lock()
if c.err == nil {
c.err = err
// Close connection to force errors on subsequent calls and to unblock
// other reader or writer.
c.conn.Close()
}
c.mu.Unlock()
return err
}
func (c *conn) Err() error {
c.mu.Lock()
err := c.err
c.mu.Unlock()
return err
}
func (c *conn) writeLen(prefix byte, n int) error {
c.lenScratch[len(c.lenScratch)-1] = '\n'
c.lenScratch[len(c.lenScratch)-2] = '\r'
i := len(c.lenScratch) - 3
for {
c.lenScratch[i] = byte('0' + n%10)
i -= 1
n = n / 10
if n == 0 {
break
}
}
c.lenScratch[i] = prefix
_, err := c.bw.Write(c.lenScratch[i:])
return err
}
func (c *conn) writeString(s string) error {
c.writeLen('$', len(s))
c.bw.WriteString(s)
_, err := c.bw.WriteString("\r\n")
return err
}
func (c *conn) writeBytes(p []byte) error {
c.writeLen('$', len(p))
c.bw.Write(p)
_, err := c.bw.WriteString("\r\n")
return err
}
func (c *conn) writeInt64(n int64) error {
return c.writeBytes(strconv.AppendInt(c.numScratch[:0], n, 10))
}
func (c *conn) writeFloat64(n float64) error {
return c.writeBytes(strconv.AppendFloat(c.numScratch[:0], n, 'g', -1, 64))
}
func (c *conn) writeCommand(cmd string, args []interface{}) error {
c.writeLen('*', 1+len(args))
if err := c.writeString(cmd); err != nil {
return err
}
for _, arg := range args {
if err := c.writeArg(arg, true); err != nil {
return err
}
}
return nil
}
func (c *conn) writeArg(arg interface{}, argumentTypeOK bool) (err error) {
switch arg := arg.(type) {
case string:
return c.writeString(arg)
case []byte:
return c.writeBytes(arg)
case int:
return c.writeInt64(int64(arg))
case int64:
return c.writeInt64(arg)
case float64:
return c.writeFloat64(arg)
case bool:
if arg {
return c.writeString("1")
} else {
return c.writeString("0")
}
case nil:
return c.writeString("")
case Argument:
if argumentTypeOK {
return c.writeArg(arg.RedisArg(), false)
}
// See comment in default clause below.
var buf bytes.Buffer
fmt.Fprint(&buf, arg)
return c.writeBytes(buf.Bytes())
default:
// This default clause is intended to handle builtin numeric types.
// The function should return an error for other types, but this is not
// done for compatibility with previous versions of the package.
var buf bytes.Buffer
fmt.Fprint(&buf, arg)
return c.writeBytes(buf.Bytes())
}
}
type protocolError string
func (pe protocolError) Error() string {
return fmt.Sprintf("redigo: %s (possible server error or unsupported concurrent read by application)", string(pe))
}
func (c *conn) readLine() ([]byte, error) {
p, err := c.br.ReadSlice('\n')
if err == bufio.ErrBufferFull {
return nil, protocolError("long response line")
}
if err != nil {
return nil, err
}
i := len(p) - 2
if i < 0 || p[i] != '\r' {
return nil, protocolError("bad response line terminator")
}
return p[:i], nil
}
// parseLen parses bulk string and array lengths.
func parseLen(p []byte) (int, error) {
if len(p) == 0 {
return -1, protocolError("malformed length")
}
if p[0] == '-' && len(p) == 2 && p[1] == '1' {
// handle $-1 and $-1 null replies.
return -1, nil
}
var n int
for _, b := range p {
n *= 10
if b < '0' || b > '9' {
return -1, protocolError("illegal bytes in length")
}
n += int(b - '0')
}
return n, nil
}
// parseInt parses an integer reply.
func parseInt(p []byte) (interface{}, error) {
if len(p) == 0 {
return 0, protocolError("malformed integer")
}
var negate bool
if p[0] == '-' {
negate = true
p = p[1:]
if len(p) == 0 {
return 0, protocolError("malformed integer")
}
}
var n int64
for _, b := range p {
n *= 10
if b < '0' || b > '9' {
return 0, protocolError("illegal bytes in length")
}
n += int64(b - '0')
}
if negate {
n = -n
}
return n, nil
}
var (
okReply interface{} = "OK"
pongReply interface{} = "PONG"
)
func (c *conn) readReply() (interface{}, error) {
line, err := c.readLine()
if err != nil {
return nil, err
}
if len(line) == 0 {
return nil, protocolError("short response line")
}
switch line[0] {
case '+':
switch {
case len(line) == 3 && line[1] == 'O' && line[2] == 'K':
// Avoid allocation for frequent "+OK" response.
return okReply, nil
case len(line) == 5 && line[1] == 'P' && line[2] == 'O' && line[3] == 'N' && line[4] == 'G':
// Avoid allocation in PING command benchmarks :)
return pongReply, nil
default:
return string(line[1:]), nil
}
case '-':
return Error(string(line[1:])), nil
case ':':
return parseInt(line[1:])
case '$':
n, err := parseLen(line[1:])
if n < 0 || err != nil {
return nil, err
}
p := make([]byte, n)
_, err = io.ReadFull(c.br, p)
if err != nil {
return nil, err
}
if line, err := c.readLine(); err != nil {
return nil, err
} else if len(line) != 0 {
return nil, protocolError("bad bulk string format")
}
return p, nil
case '*':
n, err := parseLen(line[1:])
if n < 0 || err != nil {
return nil, err
}
r := make([]interface{}, n)
for i := range r {
r[i], err = c.readReply()
if err != nil {
return nil, err
}
}
return r, nil
}
return nil, protocolError("unexpected response line")
}
func (c *conn) Send(cmd string, args ...interface{}) error {
c.mu.Lock()
c.pending += 1
c.mu.Unlock()
if c.writeTimeout != 0 {
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
}
if err := c.writeCommand(cmd, args); err != nil {
return c.fatal(err)
}
return nil
}
func (c *conn) Flush() error {
if c.writeTimeout != 0 {
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
}
if err := c.bw.Flush(); err != nil {
return c.fatal(err)
}
return nil
}
func (c *conn) Receive() (interface{}, error) {
return c.ReceiveWithTimeout(c.readTimeout)
}
func (c *conn) ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error) {
var deadline time.Time
if timeout != 0 {
deadline = time.Now().Add(timeout)
}
c.conn.SetReadDeadline(deadline)
if reply, err = c.readReply(); err != nil {
return nil, c.fatal(err)
}
// When using pub/sub, the number of receives can be greater than the
// number of sends. To enable normal use of the connection after
// unsubscribing from all channels, we do not decrement pending to a
// negative value.
//
// The pending field is decremented after the reply is read to handle the
// case where Receive is called before Send.
c.mu.Lock()
if c.pending > 0 {
c.pending -= 1
}
c.mu.Unlock()
if err, ok := reply.(Error); ok {
return nil, err
}
return
}
func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
return c.DoWithTimeout(c.readTimeout, cmd, args...)
}
func (c *conn) DoWithTimeout(readTimeout time.Duration, cmd string, args ...interface{}) (interface{}, error) {
c.mu.Lock()
pending := c.pending
c.pending = 0
c.mu.Unlock()
if cmd == "" && pending == 0 {
return nil, nil
}
if c.writeTimeout != 0 {
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
}
if cmd != "" {
if err := c.writeCommand(cmd, args); err != nil {
return nil, c.fatal(err)
}
}
if err := c.bw.Flush(); err != nil {
return nil, c.fatal(err)
}
var deadline time.Time
if readTimeout != 0 {
deadline = time.Now().Add(readTimeout)
}
c.conn.SetReadDeadline(deadline)
if cmd == "" {
reply := make([]interface{}, pending)
for i := range reply {
r, e := c.readReply()
if e != nil {
return nil, c.fatal(e)
}
reply[i] = r
}
return reply, nil
}
var err error
var reply interface{}
for i := 0; i <= pending; i++ {
var e error
if reply, e = c.readReply(); e != nil {
return nil, c.fatal(e)
}
if e, ok := reply.(Error); ok && err == nil {
err = e
}
}
return reply, err
}

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@@ -1,867 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"bytes"
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"math"
"net"
"os"
"reflect"
"strings"
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
type testConn struct {
io.Reader
io.Writer
readDeadline time.Time
writeDeadline time.Time
}
func (*testConn) Close() error { return nil }
func (*testConn) LocalAddr() net.Addr { return nil }
func (*testConn) RemoteAddr() net.Addr { return nil }
func (c *testConn) SetDeadline(t time.Time) error { c.readDeadline = t; c.writeDeadline = t; return nil }
func (c *testConn) SetReadDeadline(t time.Time) error { c.readDeadline = t; return nil }
func (c *testConn) SetWriteDeadline(t time.Time) error { c.writeDeadline = t; return nil }
func dialTestConn(r string, w io.Writer) redis.DialOption {
return redis.DialNetDial(func(network, addr string) (net.Conn, error) {
return &testConn{Reader: strings.NewReader(r), Writer: w}, nil
})
}
type tlsTestConn struct {
net.Conn
done chan struct{}
}
func (c *tlsTestConn) Close() error {
c.Conn.Close()
<-c.done
return nil
}
func dialTestConnTLS(r string, w io.Writer) redis.DialOption {
return redis.DialNetDial(func(network, addr string) (net.Conn, error) {
client, server := net.Pipe()
tlsServer := tls.Server(server, &serverTLSConfig)
go io.Copy(tlsServer, strings.NewReader(r))
done := make(chan struct{})
go func() {
io.Copy(w, tlsServer)
close(done)
}()
return &tlsTestConn{Conn: client, done: done}, nil
})
}
type durationArg struct {
time.Duration
}
func (t durationArg) RedisArg() interface{} {
return t.Seconds()
}
type recursiveArg int
func (v recursiveArg) RedisArg() interface{} { return v }
var writeTests = []struct {
args []interface{}
expected string
}{
{
[]interface{}{"SET", "key", "value"},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n",
},
{
[]interface{}{"SET", "key", "value"},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n",
},
{
[]interface{}{"SET", "key", byte(100)},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$3\r\n100\r\n",
},
{
[]interface{}{"SET", "key", 100},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$3\r\n100\r\n",
},
{
[]interface{}{"SET", "key", int64(math.MinInt64)},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$20\r\n-9223372036854775808\r\n",
},
{
[]interface{}{"SET", "key", float64(1349673917.939762)},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$21\r\n1.349673917939762e+09\r\n",
},
{
[]interface{}{"SET", "key", ""},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$0\r\n\r\n",
},
{
[]interface{}{"SET", "key", nil},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$0\r\n\r\n",
},
{
[]interface{}{"SET", "key", durationArg{time.Minute}},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$2\r\n60\r\n",
},
{
[]interface{}{"SET", "key", recursiveArg(123)},
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$3\r\n123\r\n",
},
{
[]interface{}{"ECHO", true, false},
"*3\r\n$4\r\nECHO\r\n$1\r\n1\r\n$1\r\n0\r\n",
},
}
func TestWrite(t *testing.T) {
for _, tt := range writeTests {
var buf bytes.Buffer
c, _ := redis.Dial("", "", dialTestConn("", &buf))
err := c.Send(tt.args[0].(string), tt.args[1:]...)
if err != nil {
t.Errorf("Send(%v) returned error %v", tt.args, err)
continue
}
c.Flush()
actual := buf.String()
if actual != tt.expected {
t.Errorf("Send(%v) = %q, want %q", tt.args, actual, tt.expected)
}
}
}
var errorSentinel = &struct{}{}
var readTests = []struct {
reply string
expected interface{}
}{
{
"+OK\r\n",
"OK",
},
{
"+PONG\r\n",
"PONG",
},
{
"@OK\r\n",
errorSentinel,
},
{
"$6\r\nfoobar\r\n",
[]byte("foobar"),
},
{
"$-1\r\n",
nil,
},
{
":1\r\n",
int64(1),
},
{
":-2\r\n",
int64(-2),
},
{
"*0\r\n",
[]interface{}{},
},
{
"*-1\r\n",
nil,
},
{
"*4\r\n$3\r\nfoo\r\n$3\r\nbar\r\n$5\r\nHello\r\n$5\r\nWorld\r\n",
[]interface{}{[]byte("foo"), []byte("bar"), []byte("Hello"), []byte("World")},
},
{
"*3\r\n$3\r\nfoo\r\n$-1\r\n$3\r\nbar\r\n",
[]interface{}{[]byte("foo"), nil, []byte("bar")},
},
{
// "x" is not a valid length
"$x\r\nfoobar\r\n",
errorSentinel,
},
{
// -2 is not a valid length
"$-2\r\n",
errorSentinel,
},
{
// "x" is not a valid integer
":x\r\n",
errorSentinel,
},
{
// missing \r\n following value
"$6\r\nfoobar",
errorSentinel,
},
{
// short value
"$6\r\nxx",
errorSentinel,
},
{
// long value
"$6\r\nfoobarx\r\n",
errorSentinel,
},
}
func TestRead(t *testing.T) {
for _, tt := range readTests {
c, _ := redis.Dial("", "", dialTestConn(tt.reply, nil))
actual, err := c.Receive()
if tt.expected == errorSentinel {
if err == nil {
t.Errorf("Receive(%q) did not return expected error", tt.reply)
}
} else {
if err != nil {
t.Errorf("Receive(%q) returned error %v", tt.reply, err)
continue
}
if !reflect.DeepEqual(actual, tt.expected) {
t.Errorf("Receive(%q) = %v, want %v", tt.reply, actual, tt.expected)
}
}
}
}
var testCommands = []struct {
args []interface{}
expected interface{}
}{
{
[]interface{}{"PING"},
"PONG",
},
{
[]interface{}{"SET", "foo", "bar"},
"OK",
},
{
[]interface{}{"GET", "foo"},
[]byte("bar"),
},
{
[]interface{}{"GET", "nokey"},
nil,
},
{
[]interface{}{"MGET", "nokey", "foo"},
[]interface{}{nil, []byte("bar")},
},
{
[]interface{}{"INCR", "mycounter"},
int64(1),
},
{
[]interface{}{"LPUSH", "mylist", "foo"},
int64(1),
},
{
[]interface{}{"LPUSH", "mylist", "bar"},
int64(2),
},
{
[]interface{}{"LRANGE", "mylist", 0, -1},
[]interface{}{[]byte("bar"), []byte("foo")},
},
{
[]interface{}{"MULTI"},
"OK",
},
{
[]interface{}{"LRANGE", "mylist", 0, -1},
"QUEUED",
},
{
[]interface{}{"PING"},
"QUEUED",
},
{
[]interface{}{"EXEC"},
[]interface{}{
[]interface{}{[]byte("bar"), []byte("foo")},
"PONG",
},
},
}
func TestDoCommands(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
for _, cmd := range testCommands {
actual, err := c.Do(cmd.args[0].(string), cmd.args[1:]...)
if err != nil {
t.Errorf("Do(%v) returned error %v", cmd.args, err)
continue
}
if !reflect.DeepEqual(actual, cmd.expected) {
t.Errorf("Do(%v) = %v, want %v", cmd.args, actual, cmd.expected)
}
}
}
func TestPipelineCommands(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
for _, cmd := range testCommands {
if err := c.Send(cmd.args[0].(string), cmd.args[1:]...); err != nil {
t.Fatalf("Send(%v) returned error %v", cmd.args, err)
}
}
if err := c.Flush(); err != nil {
t.Errorf("Flush() returned error %v", err)
}
for _, cmd := range testCommands {
actual, err := c.Receive()
if err != nil {
t.Fatalf("Receive(%v) returned error %v", cmd.args, err)
}
if !reflect.DeepEqual(actual, cmd.expected) {
t.Errorf("Receive(%v) = %v, want %v", cmd.args, actual, cmd.expected)
}
}
}
func TestBlankCommmand(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
for _, cmd := range testCommands {
if err := c.Send(cmd.args[0].(string), cmd.args[1:]...); err != nil {
t.Fatalf("Send(%v) returned error %v", cmd.args, err)
}
}
reply, err := redis.Values(c.Do(""))
if err != nil {
t.Fatalf("Do() returned error %v", err)
}
if len(reply) != len(testCommands) {
t.Fatalf("len(reply)=%d, want %d", len(reply), len(testCommands))
}
for i, cmd := range testCommands {
actual := reply[i]
if !reflect.DeepEqual(actual, cmd.expected) {
t.Errorf("Receive(%v) = %v, want %v", cmd.args, actual, cmd.expected)
}
}
}
func TestRecvBeforeSend(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
done := make(chan struct{})
go func() {
c.Receive()
close(done)
}()
time.Sleep(time.Millisecond)
c.Send("PING")
c.Flush()
<-done
_, err = c.Do("")
if err != nil {
t.Fatalf("error=%v", err)
}
}
func TestError(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
c.Do("SET", "key", "val")
_, err = c.Do("HSET", "key", "fld", "val")
if err == nil {
t.Errorf("Expected err for HSET on string key.")
}
if c.Err() != nil {
t.Errorf("Conn has Err()=%v, expect nil", c.Err())
}
_, err = c.Do("SET", "key", "val")
if err != nil {
t.Errorf("Do(SET, key, val) returned error %v, expected nil.", err)
}
}
func TestReadTimeout(t *testing.T) {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen returned %v", err)
}
defer l.Close()
go func() {
for {
c, err := l.Accept()
if err != nil {
return
}
go func() {
time.Sleep(time.Second)
c.Write([]byte("+OK\r\n"))
c.Close()
}()
}
}()
// Do
c1, err := redis.Dial(l.Addr().Network(), l.Addr().String(), redis.DialReadTimeout(time.Millisecond))
if err != nil {
t.Fatalf("redis.Dial returned %v", err)
}
defer c1.Close()
_, err = c1.Do("PING")
if err == nil {
t.Fatalf("c1.Do() returned nil, expect error")
}
if c1.Err() == nil {
t.Fatalf("c1.Err() = nil, expect error")
}
// Send/Flush/Receive
c2, err := redis.Dial(l.Addr().Network(), l.Addr().String(), redis.DialReadTimeout(time.Millisecond))
if err != nil {
t.Fatalf("redis.Dial returned %v", err)
}
defer c2.Close()
c2.Send("PING")
c2.Flush()
_, err = c2.Receive()
if err == nil {
t.Fatalf("c2.Receive() returned nil, expect error")
}
if c2.Err() == nil {
t.Fatalf("c2.Err() = nil, expect error")
}
}
var dialErrors = []struct {
rawurl string
expectedError string
}{
{
"localhost",
"invalid redis URL scheme",
},
// The error message for invalid hosts is different in different
// versions of Go, so just check that there is an error message.
{
"redis://weird url",
"",
},
{
"redis://foo:bar:baz",
"",
},
{
"http://www.google.com",
"invalid redis URL scheme: http",
},
{
"redis://localhost:6379/abc123",
"invalid database: abc123",
},
}
func TestDialURLErrors(t *testing.T) {
for _, d := range dialErrors {
_, err := redis.DialURL(d.rawurl)
if err == nil || !strings.Contains(err.Error(), d.expectedError) {
t.Errorf("DialURL did not return expected error (expected %v to contain %s)", err, d.expectedError)
}
}
}
func TestDialURLPort(t *testing.T) {
checkPort := func(network, address string) (net.Conn, error) {
if address != "localhost:6379" {
t.Errorf("DialURL did not set port to 6379 by default (got %v)", address)
}
return nil, nil
}
_, err := redis.DialURL("redis://localhost", redis.DialNetDial(checkPort))
if err != nil {
t.Error("dial error:", err)
}
}
func TestDialURLHost(t *testing.T) {
checkHost := func(network, address string) (net.Conn, error) {
if address != "localhost:6379" {
t.Errorf("DialURL did not set host to localhost by default (got %v)", address)
}
return nil, nil
}
_, err := redis.DialURL("redis://:6379", redis.DialNetDial(checkHost))
if err != nil {
t.Error("dial error:", err)
}
}
var dialURLTests = []struct {
description string
url string
r string
w string
}{
{"password", "redis://x:abc123@localhost", "+OK\r\n", "*2\r\n$4\r\nAUTH\r\n$6\r\nabc123\r\n"},
{"database 3", "redis://localhost/3", "+OK\r\n", "*2\r\n$6\r\nSELECT\r\n$1\r\n3\r\n"},
{"database 99", "redis://localhost/99", "+OK\r\n", "*2\r\n$6\r\nSELECT\r\n$2\r\n99\r\n"},
{"no database", "redis://localhost/", "+OK\r\n", ""},
}
func TestDialURL(t *testing.T) {
for _, tt := range dialURLTests {
var buf bytes.Buffer
// UseTLS should be ignored in all of these tests.
_, err := redis.DialURL(tt.url, dialTestConn(tt.r, &buf), redis.DialUseTLS(true))
if err != nil {
t.Errorf("%s dial error: %v", tt.description, err)
continue
}
if w := buf.String(); w != tt.w {
t.Errorf("%s commands = %q, want %q", tt.description, w, tt.w)
}
}
}
func checkPingPong(t *testing.T, buf *bytes.Buffer, c redis.Conn) {
resp, err := c.Do("PING")
if err != nil {
t.Fatal("ping error:", err)
}
// Close connection to ensure that writes to buf are complete.
c.Close()
expected := "*1\r\n$4\r\nPING\r\n"
actual := buf.String()
if actual != expected {
t.Errorf("commands = %q, want %q", actual, expected)
}
if resp != "PONG" {
t.Errorf("resp = %v, want %v", resp, "PONG")
}
}
const pingResponse = "+PONG\r\n"
func TestDialURLTLS(t *testing.T) {
var buf bytes.Buffer
c, err := redis.DialURL("rediss://example.com/",
redis.DialTLSConfig(&clientTLSConfig),
dialTestConnTLS(pingResponse, &buf))
if err != nil {
t.Fatal("dial error:", err)
}
checkPingPong(t, &buf, c)
}
func TestDialUseTLS(t *testing.T) {
var buf bytes.Buffer
c, err := redis.Dial("tcp", "example.com:6379",
redis.DialTLSConfig(&clientTLSConfig),
dialTestConnTLS(pingResponse, &buf),
redis.DialUseTLS(true))
if err != nil {
t.Fatal("dial error:", err)
}
checkPingPong(t, &buf, c)
}
func TestDialTLSSKipVerify(t *testing.T) {
var buf bytes.Buffer
c, err := redis.Dial("tcp", "example.com:6379",
dialTestConnTLS(pingResponse, &buf),
redis.DialTLSSkipVerify(true),
redis.DialUseTLS(true))
if err != nil {
t.Fatal("dial error:", err)
}
checkPingPong(t, &buf, c)
}
// Connect to local instance of Redis running on the default port.
func ExampleDial() {
c, err := redis.Dial("tcp", ":6379")
if err != nil {
// handle error
}
defer c.Close()
}
// Connect to remote instance of Redis using a URL.
func ExampleDialURL() {
c, err := redis.DialURL(os.Getenv("REDIS_URL"))
if err != nil {
// handle connection error
}
defer c.Close()
}
// TextExecError tests handling of errors in a transaction. See
// http://redis.io/topics/transactions for information on how Redis handles
// errors in a transaction.
func TestExecError(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
// Execute commands that fail before EXEC is called.
c.Do("DEL", "k0")
c.Do("ZADD", "k0", 0, 0)
c.Send("MULTI")
c.Send("NOTACOMMAND", "k0", 0, 0)
c.Send("ZINCRBY", "k0", 0, 0)
v, err := c.Do("EXEC")
if err == nil {
t.Fatalf("EXEC returned values %v, expected error", v)
}
// Execute commands that fail after EXEC is called. The first command
// returns an error.
c.Do("DEL", "k1")
c.Do("ZADD", "k1", 0, 0)
c.Send("MULTI")
c.Send("HSET", "k1", 0, 0)
c.Send("ZINCRBY", "k1", 0, 0)
v, err = c.Do("EXEC")
if err != nil {
t.Fatalf("EXEC returned error %v", err)
}
vs, err := redis.Values(v, nil)
if err != nil {
t.Fatalf("Values(v) returned error %v", err)
}
if len(vs) != 2 {
t.Fatalf("len(vs) == %d, want 2", len(vs))
}
if _, ok := vs[0].(error); !ok {
t.Fatalf("first result is type %T, expected error", vs[0])
}
if _, ok := vs[1].([]byte); !ok {
t.Fatalf("second result is type %T, expected []byte", vs[1])
}
// Execute commands that fail after EXEC is called. The second command
// returns an error.
c.Do("ZADD", "k2", 0, 0)
c.Send("MULTI")
c.Send("ZINCRBY", "k2", 0, 0)
c.Send("HSET", "k2", 0, 0)
v, err = c.Do("EXEC")
if err != nil {
t.Fatalf("EXEC returned error %v", err)
}
vs, err = redis.Values(v, nil)
if err != nil {
t.Fatalf("Values(v) returned error %v", err)
}
if len(vs) != 2 {
t.Fatalf("len(vs) == %d, want 2", len(vs))
}
if _, ok := vs[0].([]byte); !ok {
t.Fatalf("first result is type %T, expected []byte", vs[0])
}
if _, ok := vs[1].(error); !ok {
t.Fatalf("second result is type %T, expected error", vs[2])
}
}
func BenchmarkDoEmpty(b *testing.B) {
b.StopTimer()
c, err := redis.DialDefaultServer()
if err != nil {
b.Fatal(err)
}
defer c.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
if _, err := c.Do(""); err != nil {
b.Fatal(err)
}
}
}
func BenchmarkDoPing(b *testing.B) {
b.StopTimer()
c, err := redis.DialDefaultServer()
if err != nil {
b.Fatal(err)
}
defer c.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
}
}
var clientTLSConfig, serverTLSConfig tls.Config
func init() {
// The certificate and key for testing TLS dial options was created
// using the command
//
// go run GOROOT/src/crypto/tls/generate_cert.go \
// --rsa-bits 1024 \
// --host 127.0.0.1,::1,example.com --ca \
// --start-date "Jan 1 00:00:00 1970" \
// --duration=1000000h
//
// where GOROOT is the value of GOROOT reported by go env.
localhostCert := []byte(`
-----BEGIN CERTIFICATE-----
MIICFDCCAX2gAwIBAgIRAJfBL4CUxkXcdlFurb3K+iowDQYJKoZIhvcNAQELBQAw
EjEQMA4GA1UEChMHQWNtZSBDbzAgFw03MDAxMDEwMDAwMDBaGA8yMDg0MDEyOTE2
MDAwMFowEjEQMA4GA1UEChMHQWNtZSBDbzCBnzANBgkqhkiG9w0BAQEFAAOBjQAw
gYkCgYEArizw8WxMUQ3bGHLeuJ4fDrEpy+L2pqrbYRlKk1DasJ/VkB8bImzIpe6+
LGjiYIxvnDCOJ3f3QplcQuiuMyl6f2irJlJsbFT8Lo/3obnuTKAIaqUdJUqBg6y+
JaL8Auk97FvunfKFv8U1AIhgiLzAfQ/3Eaq1yi87Ra6pMjGbTtcCAwEAAaNoMGYw
DgYDVR0PAQH/BAQDAgKkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQF
MAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAAAAAAAAAA
AAAAAAEwDQYJKoZIhvcNAQELBQADgYEAdZ8daIVkyhVwflt5I19m0oq1TycbGO1+
ach7T6cZiBQeNR/SJtxr/wKPEpmvUgbv2BfFrKJ8QoIHYsbNSURTWSEa02pfw4k9
6RQhij3ZkG79Ituj5OYRORV6Z0HUW32r670BtcuHuAhq7YA6Nxy4FtSt7bAlVdRt
rrKgNsltzMk=
-----END CERTIFICATE-----`)
localhostKey := []byte(`
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`)
cert, err := tls.X509KeyPair(localhostCert, localhostKey)
if err != nil {
panic(fmt.Sprintf("error creating key pair: %v", err))
}
serverTLSConfig.Certificates = []tls.Certificate{cert}
certificate, err := x509.ParseCertificate(serverTLSConfig.Certificates[0].Certificate[0])
if err != nil {
panic(fmt.Sprintf("error parsing x509 certificate: %v", err))
}
clientTLSConfig.RootCAs = x509.NewCertPool()
clientTLSConfig.RootCAs.AddCert(certificate)
}
func TestWithTimeout(t *testing.T) {
for _, recv := range []bool{true, false} {
for _, defaultTimout := range []time.Duration{0, time.Minute} {
var buf bytes.Buffer
nc := &testConn{Reader: strings.NewReader("+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n+OK\r\n"), Writer: &buf}
c, _ := redis.Dial("", "", redis.DialReadTimeout(defaultTimout), redis.DialNetDial(func(network, addr string) (net.Conn, error) { return nc, nil }))
for i := 0; i < 4; i++ {
var minDeadline, maxDeadline time.Time
// Alternate between default and specified timeout.
if i%2 == 0 {
if defaultTimout != 0 {
minDeadline = time.Now().Add(defaultTimout)
}
if recv {
c.Receive()
} else {
c.Do("PING")
}
if defaultTimout != 0 {
maxDeadline = time.Now().Add(defaultTimout)
}
} else {
timeout := 10 * time.Minute
minDeadline = time.Now().Add(timeout)
if recv {
redis.ReceiveWithTimeout(c, timeout)
} else {
redis.DoWithTimeout(c, timeout, "PING")
}
maxDeadline = time.Now().Add(timeout)
}
// Expect set deadline in expected range.
if nc.readDeadline.Before(minDeadline) || nc.readDeadline.After(maxDeadline) {
t.Errorf("recv %v, %d: do deadline error: %v, %v, %v", recv, i, minDeadline, nc.readDeadline, maxDeadline)
}
}
}
}
}

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@@ -1,177 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package redis is a client for the Redis database.
//
// The Redigo FAQ (https://github.com/garyburd/redigo/wiki/FAQ) contains more
// documentation about this package.
//
// Connections
//
// The Conn interface is the primary interface for working with Redis.
// Applications create connections by calling the Dial, DialWithTimeout or
// NewConn functions. In the future, functions will be added for creating
// sharded and other types of connections.
//
// The application must call the connection Close method when the application
// is done with the connection.
//
// Executing Commands
//
// The Conn interface has a generic method for executing Redis commands:
//
// Do(commandName string, args ...interface{}) (reply interface{}, err error)
//
// The Redis command reference (http://redis.io/commands) lists the available
// commands. An example of using the Redis APPEND command is:
//
// n, err := conn.Do("APPEND", "key", "value")
//
// The Do method converts command arguments to bulk strings for transmission
// to the server as follows:
//
// Go Type Conversion
// []byte Sent as is
// string Sent as is
// int, int64 strconv.FormatInt(v)
// float64 strconv.FormatFloat(v, 'g', -1, 64)
// bool true -> "1", false -> "0"
// nil ""
// all other types fmt.Fprint(w, v)
//
// Redis command reply types are represented using the following Go types:
//
// Redis type Go type
// error redis.Error
// integer int64
// simple string string
// bulk string []byte or nil if value not present.
// array []interface{} or nil if value not present.
//
// Use type assertions or the reply helper functions to convert from
// interface{} to the specific Go type for the command result.
//
// Pipelining
//
// Connections support pipelining using the Send, Flush and Receive methods.
//
// Send(commandName string, args ...interface{}) error
// Flush() error
// Receive() (reply interface{}, err error)
//
// Send writes the command to the connection's output buffer. Flush flushes the
// connection's output buffer to the server. Receive reads a single reply from
// the server. The following example shows a simple pipeline.
//
// c.Send("SET", "foo", "bar")
// c.Send("GET", "foo")
// c.Flush()
// c.Receive() // reply from SET
// v, err = c.Receive() // reply from GET
//
// The Do method combines the functionality of the Send, Flush and Receive
// methods. The Do method starts by writing the command and flushing the output
// buffer. Next, the Do method receives all pending replies including the reply
// for the command just sent by Do. If any of the received replies is an error,
// then Do returns the error. If there are no errors, then Do returns the last
// reply. If the command argument to the Do method is "", then the Do method
// will flush the output buffer and receive pending replies without sending a
// command.
//
// Use the Send and Do methods to implement pipelined transactions.
//
// c.Send("MULTI")
// c.Send("INCR", "foo")
// c.Send("INCR", "bar")
// r, err := c.Do("EXEC")
// fmt.Println(r) // prints [1, 1]
//
// Concurrency
//
// Connections support one concurrent caller to the Receive method and one
// concurrent caller to the Send and Flush methods. No other concurrency is
// supported including concurrent calls to the Do method.
//
// For full concurrent access to Redis, use the thread-safe Pool to get, use
// and release a connection from within a goroutine. Connections returned from
// a Pool have the concurrency restrictions described in the previous
// paragraph.
//
// Publish and Subscribe
//
// Use the Send, Flush and Receive methods to implement Pub/Sub subscribers.
//
// c.Send("SUBSCRIBE", "example")
// c.Flush()
// for {
// reply, err := c.Receive()
// if err != nil {
// return err
// }
// // process pushed message
// }
//
// The PubSubConn type wraps a Conn with convenience methods for implementing
// subscribers. The Subscribe, PSubscribe, Unsubscribe and PUnsubscribe methods
// send and flush a subscription management command. The receive method
// converts a pushed message to convenient types for use in a type switch.
//
// psc := redis.PubSubConn{Conn: c}
// psc.Subscribe("example")
// for {
// switch v := psc.Receive().(type) {
// case redis.Message:
// fmt.Printf("%s: message: %s\n", v.Channel, v.Data)
// case redis.Subscription:
// fmt.Printf("%s: %s %d\n", v.Channel, v.Kind, v.Count)
// case error:
// return v
// }
// }
//
// Reply Helpers
//
// The Bool, Int, Bytes, String, Strings and Values functions convert a reply
// to a value of a specific type. To allow convenient wrapping of calls to the
// connection Do and Receive methods, the functions take a second argument of
// type error. If the error is non-nil, then the helper function returns the
// error. If the error is nil, the function converts the reply to the specified
// type:
//
// exists, err := redis.Bool(c.Do("EXISTS", "foo"))
// if err != nil {
// // handle error return from c.Do or type conversion error.
// }
//
// The Scan function converts elements of a array reply to Go types:
//
// var value1 int
// var value2 string
// reply, err := redis.Values(c.Do("MGET", "key1", "key2"))
// if err != nil {
// // handle error
// }
// if _, err := redis.Scan(reply, &value1, &value2); err != nil {
// // handle error
// }
//
// Errors
//
// Connection methods return error replies from the server as type redis.Error.
//
// Call the connection Err() method to determine if the connection encountered
// non-recoverable error such as a network error or protocol parsing error. If
// Err() returns a non-nil value, then the connection is not usable and should
// be closed.
package redis // import "github.com/garyburd/redigo/redis"

View File

@@ -1,27 +0,0 @@
// +build !go1.7
package redis
import "crypto/tls"
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return &tls.Config{
Rand: cfg.Rand,
Time: cfg.Time,
Certificates: cfg.Certificates,
NameToCertificate: cfg.NameToCertificate,
GetCertificate: cfg.GetCertificate,
RootCAs: cfg.RootCAs,
NextProtos: cfg.NextProtos,
ServerName: cfg.ServerName,
ClientAuth: cfg.ClientAuth,
ClientCAs: cfg.ClientCAs,
InsecureSkipVerify: cfg.InsecureSkipVerify,
CipherSuites: cfg.CipherSuites,
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
ClientSessionCache: cfg.ClientSessionCache,
MinVersion: cfg.MinVersion,
MaxVersion: cfg.MaxVersion,
CurvePreferences: cfg.CurvePreferences,
}
}

View File

@@ -1,29 +0,0 @@
// +build go1.7,!go1.8
package redis
import "crypto/tls"
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return &tls.Config{
Rand: cfg.Rand,
Time: cfg.Time,
Certificates: cfg.Certificates,
NameToCertificate: cfg.NameToCertificate,
GetCertificate: cfg.GetCertificate,
RootCAs: cfg.RootCAs,
NextProtos: cfg.NextProtos,
ServerName: cfg.ServerName,
ClientAuth: cfg.ClientAuth,
ClientCAs: cfg.ClientCAs,
InsecureSkipVerify: cfg.InsecureSkipVerify,
CipherSuites: cfg.CipherSuites,
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
ClientSessionCache: cfg.ClientSessionCache,
MinVersion: cfg.MinVersion,
MaxVersion: cfg.MaxVersion,
CurvePreferences: cfg.CurvePreferences,
DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled,
Renegotiation: cfg.Renegotiation,
}
}

View File

@@ -1,9 +0,0 @@
// +build go1.8
package redis
import "crypto/tls"
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return cfg.Clone()
}

View File

@@ -1,134 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"bytes"
"fmt"
"log"
"time"
)
var (
_ ConnWithTimeout = (*loggingConn)(nil)
)
// NewLoggingConn returns a logging wrapper around a connection.
func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
if prefix != "" {
prefix = prefix + "."
}
return &loggingConn{conn, logger, prefix}
}
type loggingConn struct {
Conn
logger *log.Logger
prefix string
}
func (c *loggingConn) Close() error {
err := c.Conn.Close()
var buf bytes.Buffer
fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
c.logger.Output(2, buf.String())
return err
}
func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
const chop = 32
switch v := v.(type) {
case []byte:
if len(v) > chop {
fmt.Fprintf(buf, "%q...", v[:chop])
} else {
fmt.Fprintf(buf, "%q", v)
}
case string:
if len(v) > chop {
fmt.Fprintf(buf, "%q...", v[:chop])
} else {
fmt.Fprintf(buf, "%q", v)
}
case []interface{}:
if len(v) == 0 {
buf.WriteString("[]")
} else {
sep := "["
fin := "]"
if len(v) > chop {
v = v[:chop]
fin = "...]"
}
for _, vv := range v {
buf.WriteString(sep)
c.printValue(buf, vv)
sep = ", "
}
buf.WriteString(fin)
}
default:
fmt.Fprint(buf, v)
}
}
func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
var buf bytes.Buffer
fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
if method != "Receive" {
buf.WriteString(commandName)
for _, arg := range args {
buf.WriteString(", ")
c.printValue(&buf, arg)
}
}
buf.WriteString(") -> (")
if method != "Send" {
c.printValue(&buf, reply)
buf.WriteString(", ")
}
fmt.Fprintf(&buf, "%v)", err)
c.logger.Output(3, buf.String())
}
func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
reply, err := c.Conn.Do(commandName, args...)
c.print("Do", commandName, args, reply, err)
return reply, err
}
func (c *loggingConn) DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (interface{}, error) {
reply, err := DoWithTimeout(c.Conn, timeout, commandName, args...)
c.print("DoWithTimeout", commandName, args, reply, err)
return reply, err
}
func (c *loggingConn) Send(commandName string, args ...interface{}) error {
err := c.Conn.Send(commandName, args...)
c.print("Send", commandName, args, nil, err)
return err
}
func (c *loggingConn) Receive() (interface{}, error) {
reply, err := c.Conn.Receive()
c.print("Receive", "", nil, reply, err)
return reply, err
}
func (c *loggingConn) ReceiveWithTimeout(timeout time.Duration) (interface{}, error) {
reply, err := ReceiveWithTimeout(c.Conn, timeout)
c.print("ReceiveWithTimeout", "", nil, reply, err)
return reply, err
}

View File

@@ -1,469 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"bytes"
"container/list"
"crypto/rand"
"crypto/sha1"
"errors"
"io"
"strconv"
"sync"
"time"
"github.com/garyburd/redigo/internal"
)
var (
_ ConnWithTimeout = (*pooledConnection)(nil)
_ ConnWithTimeout = (*errorConnection)(nil)
)
var nowFunc = time.Now // for testing
// ErrPoolExhausted is returned from a pool connection method (Do, Send,
// Receive, Flush, Err) when the maximum number of database connections in the
// pool has been reached.
var ErrPoolExhausted = errors.New("redigo: connection pool exhausted")
var (
errPoolClosed = errors.New("redigo: connection pool closed")
errConnClosed = errors.New("redigo: connection closed")
)
// Pool maintains a pool of connections. The application calls the Get method
// to get a connection from the pool and the connection's Close method to
// return the connection's resources to the pool.
//
// The following example shows how to use a pool in a web application. The
// application creates a pool at application startup and makes it available to
// request handlers using a package level variable. The pool configuration used
// here is an example, not a recommendation.
//
// func newPool(addr string) *redis.Pool {
// return &redis.Pool{
// MaxIdle: 3,
// IdleTimeout: 240 * time.Second,
// Dial: func () (redis.Conn, error) { return redis.Dial("tcp", addr) },
// }
// }
//
// var (
// pool *redis.Pool
// redisServer = flag.String("redisServer", ":6379", "")
// )
//
// func main() {
// flag.Parse()
// pool = newPool(*redisServer)
// ...
// }
//
// A request handler gets a connection from the pool and closes the connection
// when the handler is done:
//
// func serveHome(w http.ResponseWriter, r *http.Request) {
// conn := pool.Get()
// defer conn.Close()
// ...
// }
//
// Use the Dial function to authenticate connections with the AUTH command or
// select a database with the SELECT command:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// Dial: func () (redis.Conn, error) {
// c, err := redis.Dial("tcp", server)
// if err != nil {
// return nil, err
// }
// if _, err := c.Do("AUTH", password); err != nil {
// c.Close()
// return nil, err
// }
// if _, err := c.Do("SELECT", db); err != nil {
// c.Close()
// return nil, err
// }
// return c, nil
// },
// }
//
// Use the TestOnBorrow function to check the health of an idle connection
// before the connection is returned to the application. This example PINGs
// connections that have been idle more than a minute:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// TestOnBorrow: func(c redis.Conn, t time.Time) error {
// if time.Since(t) < time.Minute {
// return nil
// }
// _, err := c.Do("PING")
// return err
// },
// }
//
type Pool struct {
// Dial is an application supplied function for creating and configuring a
// connection.
//
// The connection returned from Dial must not be in a special state
// (subscribed to pubsub channel, transaction started, ...).
Dial func() (Conn, error)
// TestOnBorrow is an optional application supplied function for checking
// the health of an idle connection before the connection is used again by
// the application. Argument t is the time that the connection was returned
// to the pool. If the function returns an error, then the connection is
// closed.
TestOnBorrow func(c Conn, t time.Time) error
// Maximum number of idle connections in the pool.
MaxIdle int
// Maximum number of connections allocated by the pool at a given time.
// When zero, there is no limit on the number of connections in the pool.
MaxActive int
// Close connections after remaining idle for this duration. If the value
// is zero, then idle connections are not closed. Applications should set
// the timeout to a value less than the server's timeout.
IdleTimeout time.Duration
// If Wait is true and the pool is at the MaxActive limit, then Get() waits
// for a connection to be returned to the pool before returning.
Wait bool
// mu protects fields defined below.
mu sync.Mutex
cond *sync.Cond
closed bool
active int
// Stack of idleConn with most recently used at the front.
idle list.List
}
type idleConn struct {
c Conn
t time.Time
}
// NewPool creates a new pool.
//
// Deprecated: Initialize the Pool directory as shown in the example.
func NewPool(newFn func() (Conn, error), maxIdle int) *Pool {
return &Pool{Dial: newFn, MaxIdle: maxIdle}
}
// Get gets a connection. The application must close the returned connection.
// This method always returns a valid connection so that applications can defer
// error handling to the first use of the connection. If there is an error
// getting an underlying connection, then the connection Err, Do, Send, Flush
// and Receive methods return that error.
func (p *Pool) Get() Conn {
c, err := p.get()
if err != nil {
return errorConnection{err}
}
return &pooledConnection{p: p, c: c}
}
// PoolStats contains pool statistics.
type PoolStats struct {
// ActiveCount is the number of connections in the pool. The count includes idle connections and connections in use.
ActiveCount int
// IdleCount is the number of idle connections in the pool.
IdleCount int
}
// Stats returns pool's statistics.
func (p *Pool) Stats() PoolStats {
p.mu.Lock()
stats := PoolStats{
ActiveCount: p.active,
IdleCount: p.idle.Len(),
}
p.mu.Unlock()
return stats
}
// ActiveCount returns the number of connections in the pool. The count includes idle connections and connections in use.
func (p *Pool) ActiveCount() int {
p.mu.Lock()
active := p.active
p.mu.Unlock()
return active
}
// IdleCount returns the number of idle connections in the pool.
func (p *Pool) IdleCount() int {
p.mu.Lock()
idle := p.idle.Len()
p.mu.Unlock()
return idle
}
// Close releases the resources used by the pool.
func (p *Pool) Close() error {
p.mu.Lock()
idle := p.idle
p.idle.Init()
p.closed = true
p.active -= idle.Len()
if p.cond != nil {
p.cond.Broadcast()
}
p.mu.Unlock()
for e := idle.Front(); e != nil; e = e.Next() {
e.Value.(idleConn).c.Close()
}
return nil
}
// release decrements the active count and signals waiters. The caller must
// hold p.mu during the call.
func (p *Pool) release() {
p.active -= 1
if p.cond != nil {
p.cond.Signal()
}
}
// get prunes stale connections and returns a connection from the idle list or
// creates a new connection.
func (p *Pool) get() (Conn, error) {
p.mu.Lock()
// Prune stale connections.
if timeout := p.IdleTimeout; timeout > 0 {
for i, n := 0, p.idle.Len(); i < n; i++ {
e := p.idle.Back()
if e == nil {
break
}
ic := e.Value.(idleConn)
if ic.t.Add(timeout).After(nowFunc()) {
break
}
p.idle.Remove(e)
p.release()
p.mu.Unlock()
ic.c.Close()
p.mu.Lock()
}
}
for {
// Get idle connection.
for i, n := 0, p.idle.Len(); i < n; i++ {
e := p.idle.Front()
if e == nil {
break
}
ic := e.Value.(idleConn)
p.idle.Remove(e)
test := p.TestOnBorrow
p.mu.Unlock()
if test == nil || test(ic.c, ic.t) == nil {
return ic.c, nil
}
ic.c.Close()
p.mu.Lock()
p.release()
}
// Check for pool closed before dialing a new connection.
if p.closed {
p.mu.Unlock()
return nil, errors.New("redigo: get on closed pool")
}
// Dial new connection if under limit.
if p.MaxActive == 0 || p.active < p.MaxActive {
dial := p.Dial
p.active += 1
p.mu.Unlock()
c, err := dial()
if err != nil {
p.mu.Lock()
p.release()
p.mu.Unlock()
c = nil
}
return c, err
}
if !p.Wait {
p.mu.Unlock()
return nil, ErrPoolExhausted
}
if p.cond == nil {
p.cond = sync.NewCond(&p.mu)
}
p.cond.Wait()
}
}
func (p *Pool) put(c Conn, forceClose bool) error {
err := c.Err()
p.mu.Lock()
if !p.closed && err == nil && !forceClose {
p.idle.PushFront(idleConn{t: nowFunc(), c: c})
if p.idle.Len() > p.MaxIdle {
c = p.idle.Remove(p.idle.Back()).(idleConn).c
} else {
c = nil
}
}
if c == nil {
if p.cond != nil {
p.cond.Signal()
}
p.mu.Unlock()
return nil
}
p.release()
p.mu.Unlock()
return c.Close()
}
type pooledConnection struct {
p *Pool
c Conn
state int
}
var (
sentinel []byte
sentinelOnce sync.Once
)
func initSentinel() {
p := make([]byte, 64)
if _, err := rand.Read(p); err == nil {
sentinel = p
} else {
h := sha1.New()
io.WriteString(h, "Oops, rand failed. Use time instead.")
io.WriteString(h, strconv.FormatInt(time.Now().UnixNano(), 10))
sentinel = h.Sum(nil)
}
}
func (pc *pooledConnection) Close() error {
c := pc.c
if _, ok := c.(errorConnection); ok {
return nil
}
pc.c = errorConnection{errConnClosed}
if pc.state&internal.MultiState != 0 {
c.Send("DISCARD")
pc.state &^= (internal.MultiState | internal.WatchState)
} else if pc.state&internal.WatchState != 0 {
c.Send("UNWATCH")
pc.state &^= internal.WatchState
}
if pc.state&internal.SubscribeState != 0 {
c.Send("UNSUBSCRIBE")
c.Send("PUNSUBSCRIBE")
// To detect the end of the message stream, ask the server to echo
// a sentinel value and read until we see that value.
sentinelOnce.Do(initSentinel)
c.Send("ECHO", sentinel)
c.Flush()
for {
p, err := c.Receive()
if err != nil {
break
}
if p, ok := p.([]byte); ok && bytes.Equal(p, sentinel) {
pc.state &^= internal.SubscribeState
break
}
}
}
c.Do("")
pc.p.put(c, pc.state != 0)
return nil
}
func (pc *pooledConnection) Err() error {
return pc.c.Err()
}
func (pc *pooledConnection) Do(commandName string, args ...interface{}) (reply interface{}, err error) {
ci := internal.LookupCommandInfo(commandName)
pc.state = (pc.state | ci.Set) &^ ci.Clear
return pc.c.Do(commandName, args...)
}
func (pc *pooledConnection) DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (reply interface{}, err error) {
cwt, ok := pc.c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
ci := internal.LookupCommandInfo(commandName)
pc.state = (pc.state | ci.Set) &^ ci.Clear
return cwt.DoWithTimeout(timeout, commandName, args...)
}
func (pc *pooledConnection) Send(commandName string, args ...interface{}) error {
ci := internal.LookupCommandInfo(commandName)
pc.state = (pc.state | ci.Set) &^ ci.Clear
return pc.c.Send(commandName, args...)
}
func (pc *pooledConnection) Flush() error {
return pc.c.Flush()
}
func (pc *pooledConnection) Receive() (reply interface{}, err error) {
return pc.c.Receive()
}
func (pc *pooledConnection) ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error) {
cwt, ok := pc.c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.ReceiveWithTimeout(timeout)
}
type errorConnection struct{ err error }
func (ec errorConnection) Do(string, ...interface{}) (interface{}, error) { return nil, ec.err }
func (ec errorConnection) DoWithTimeout(time.Duration, string, ...interface{}) (interface{}, error) {
return nil, ec.err
}
func (ec errorConnection) Send(string, ...interface{}) error { return ec.err }
func (ec errorConnection) Err() error { return ec.err }
func (ec errorConnection) Close() error { return nil }
func (ec errorConnection) Flush() error { return ec.err }
func (ec errorConnection) Receive() (interface{}, error) { return nil, ec.err }
func (ec errorConnection) ReceiveWithTimeout(time.Duration) (interface{}, error) { return nil, ec.err }

View File

@@ -1,691 +0,0 @@
// Copyright 2011 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"errors"
"io"
"reflect"
"sync"
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
type poolTestConn struct {
d *poolDialer
err error
redis.Conn
}
func (c *poolTestConn) Close() error {
c.d.mu.Lock()
c.d.open -= 1
c.d.mu.Unlock()
return c.Conn.Close()
}
func (c *poolTestConn) Err() error { return c.err }
func (c *poolTestConn) Do(commandName string, args ...interface{}) (interface{}, error) {
if commandName == "ERR" {
c.err = args[0].(error)
commandName = "PING"
}
if commandName != "" {
c.d.commands = append(c.d.commands, commandName)
}
return c.Conn.Do(commandName, args...)
}
func (c *poolTestConn) Send(commandName string, args ...interface{}) error {
c.d.commands = append(c.d.commands, commandName)
return c.Conn.Send(commandName, args...)
}
type poolDialer struct {
mu sync.Mutex
t *testing.T
dialed int
open int
commands []string
dialErr error
}
func (d *poolDialer) dial() (redis.Conn, error) {
d.mu.Lock()
d.dialed += 1
dialErr := d.dialErr
d.mu.Unlock()
if dialErr != nil {
return nil, d.dialErr
}
c, err := redis.DialDefaultServer()
if err != nil {
return nil, err
}
d.mu.Lock()
d.open += 1
d.mu.Unlock()
return &poolTestConn{d: d, Conn: c}, nil
}
func (d *poolDialer) check(message string, p *redis.Pool, dialed, open, inuse int) {
d.mu.Lock()
if d.dialed != dialed {
d.t.Errorf("%s: dialed=%d, want %d", message, d.dialed, dialed)
}
if d.open != open {
d.t.Errorf("%s: open=%d, want %d", message, d.open, open)
}
stats := p.Stats()
if stats.ActiveCount != open {
d.t.Errorf("%s: active=%d, want %d", message, stats.ActiveCount, open)
}
if stats.IdleCount != open-inuse {
d.t.Errorf("%s: idle=%d, want %d", message, stats.IdleCount, open-inuse)
}
d.mu.Unlock()
}
func TestPoolReuse(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
Dial: d.dial,
}
for i := 0; i < 10; i++ {
c1 := p.Get()
c1.Do("PING")
c2 := p.Get()
c2.Do("PING")
c1.Close()
c2.Close()
}
d.check("before close", p, 2, 2, 0)
p.Close()
d.check("after close", p, 2, 0, 0)
}
func TestPoolMaxIdle(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
Dial: d.dial,
}
defer p.Close()
for i := 0; i < 10; i++ {
c1 := p.Get()
c1.Do("PING")
c2 := p.Get()
c2.Do("PING")
c3 := p.Get()
c3.Do("PING")
c1.Close()
c2.Close()
c3.Close()
}
d.check("before close", p, 12, 2, 0)
p.Close()
d.check("after close", p, 12, 0, 0)
}
func TestPoolError(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
Dial: d.dial,
}
defer p.Close()
c := p.Get()
c.Do("ERR", io.EOF)
if c.Err() == nil {
t.Errorf("expected c.Err() != nil")
}
c.Close()
c = p.Get()
c.Do("ERR", io.EOF)
c.Close()
d.check(".", p, 2, 0, 0)
}
func TestPoolClose(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
Dial: d.dial,
}
defer p.Close()
c1 := p.Get()
c1.Do("PING")
c2 := p.Get()
c2.Do("PING")
c3 := p.Get()
c3.Do("PING")
c1.Close()
if _, err := c1.Do("PING"); err == nil {
t.Errorf("expected error after connection closed")
}
c2.Close()
c2.Close()
p.Close()
d.check("after pool close", p, 3, 1, 1)
if _, err := c1.Do("PING"); err == nil {
t.Errorf("expected error after connection and pool closed")
}
c3.Close()
d.check("after conn close", p, 3, 0, 0)
c1 = p.Get()
if _, err := c1.Do("PING"); err == nil {
t.Errorf("expected error after pool closed")
}
}
func TestPoolTimeout(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
IdleTimeout: 300 * time.Second,
Dial: d.dial,
}
defer p.Close()
now := time.Now()
redis.SetNowFunc(func() time.Time { return now })
defer redis.SetNowFunc(time.Now)
c := p.Get()
c.Do("PING")
c.Close()
d.check("1", p, 1, 1, 0)
now = now.Add(p.IdleTimeout)
c = p.Get()
c.Do("PING")
c.Close()
d.check("2", p, 2, 1, 0)
}
func TestPoolConcurrenSendReceive(t *testing.T) {
p := &redis.Pool{
Dial: redis.DialDefaultServer,
}
defer p.Close()
c := p.Get()
done := make(chan error, 1)
go func() {
_, err := c.Receive()
done <- err
}()
c.Send("PING")
c.Flush()
err := <-done
if err != nil {
t.Fatalf("Receive() returned error %v", err)
}
_, err = c.Do("")
if err != nil {
t.Fatalf("Do() returned error %v", err)
}
c.Close()
}
func TestPoolBorrowCheck(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
Dial: d.dial,
TestOnBorrow: func(redis.Conn, time.Time) error { return redis.Error("BLAH") },
}
defer p.Close()
for i := 0; i < 10; i++ {
c := p.Get()
c.Do("PING")
c.Close()
}
d.check("1", p, 10, 1, 0)
}
func TestPoolMaxActive(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
MaxActive: 2,
Dial: d.dial,
}
defer p.Close()
c1 := p.Get()
c1.Do("PING")
c2 := p.Get()
c2.Do("PING")
d.check("1", p, 2, 2, 2)
c3 := p.Get()
if _, err := c3.Do("PING"); err != redis.ErrPoolExhausted {
t.Errorf("expected pool exhausted")
}
c3.Close()
d.check("2", p, 2, 2, 2)
c2.Close()
d.check("3", p, 2, 2, 1)
c3 = p.Get()
if _, err := c3.Do("PING"); err != nil {
t.Errorf("expected good channel, err=%v", err)
}
c3.Close()
d.check("4", p, 2, 2, 1)
}
func TestPoolMonitorCleanup(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
MaxActive: 2,
Dial: d.dial,
}
defer p.Close()
c := p.Get()
c.Send("MONITOR")
c.Close()
d.check("", p, 1, 0, 0)
}
func TestPoolPubSubCleanup(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
MaxActive: 2,
Dial: d.dial,
}
defer p.Close()
c := p.Get()
c.Send("SUBSCRIBE", "x")
c.Close()
want := []string{"SUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
c = p.Get()
c.Send("PSUBSCRIBE", "x*")
c.Close()
want = []string{"PSUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
}
func TestPoolTransactionCleanup(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 2,
MaxActive: 2,
Dial: d.dial,
}
defer p.Close()
c := p.Get()
c.Do("WATCH", "key")
c.Do("PING")
c.Close()
want := []string{"WATCH", "PING", "UNWATCH"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
c = p.Get()
c.Do("WATCH", "key")
c.Do("UNWATCH")
c.Do("PING")
c.Close()
want = []string{"WATCH", "UNWATCH", "PING"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
c = p.Get()
c.Do("WATCH", "key")
c.Do("MULTI")
c.Do("PING")
c.Close()
want = []string{"WATCH", "MULTI", "PING", "DISCARD"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
c = p.Get()
c.Do("WATCH", "key")
c.Do("MULTI")
c.Do("DISCARD")
c.Do("PING")
c.Close()
want = []string{"WATCH", "MULTI", "DISCARD", "PING"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
c = p.Get()
c.Do("WATCH", "key")
c.Do("MULTI")
c.Do("EXEC")
c.Do("PING")
c.Close()
want = []string{"WATCH", "MULTI", "EXEC", "PING"}
if !reflect.DeepEqual(d.commands, want) {
t.Errorf("got commands %v, want %v", d.commands, want)
}
d.commands = nil
}
func startGoroutines(p *redis.Pool, cmd string, args ...interface{}) chan error {
errs := make(chan error, 10)
for i := 0; i < cap(errs); i++ {
go func() {
c := p.Get()
_, err := c.Do(cmd, args...)
c.Close()
errs <- err
}()
}
// Wait for goroutines to block.
time.Sleep(time.Second / 4)
return errs
}
func TestWaitPool(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 1,
MaxActive: 1,
Dial: d.dial,
Wait: true,
}
defer p.Close()
c := p.Get()
errs := startGoroutines(p, "PING")
d.check("before close", p, 1, 1, 1)
c.Close()
timeout := time.After(2 * time.Second)
for i := 0; i < cap(errs); i++ {
select {
case err := <-errs:
if err != nil {
t.Fatal(err)
}
case <-timeout:
t.Fatalf("timeout waiting for blocked goroutine %d", i)
}
}
d.check("done", p, 1, 1, 0)
}
func TestWaitPoolClose(t *testing.T) {
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 1,
MaxActive: 1,
Dial: d.dial,
Wait: true,
}
defer p.Close()
c := p.Get()
if _, err := c.Do("PING"); err != nil {
t.Fatal(err)
}
errs := startGoroutines(p, "PING")
d.check("before close", p, 1, 1, 1)
p.Close()
timeout := time.After(2 * time.Second)
for i := 0; i < cap(errs); i++ {
select {
case err := <-errs:
switch err {
case nil:
t.Fatal("blocked goroutine did not get error")
case redis.ErrPoolExhausted:
t.Fatal("blocked goroutine got pool exhausted error")
}
case <-timeout:
t.Fatal("timeout waiting for blocked goroutine")
}
}
c.Close()
d.check("done", p, 1, 0, 0)
}
func TestWaitPoolCommandError(t *testing.T) {
testErr := errors.New("test")
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 1,
MaxActive: 1,
Dial: d.dial,
Wait: true,
}
defer p.Close()
c := p.Get()
errs := startGoroutines(p, "ERR", testErr)
d.check("before close", p, 1, 1, 1)
c.Close()
timeout := time.After(2 * time.Second)
for i := 0; i < cap(errs); i++ {
select {
case err := <-errs:
if err != nil {
t.Fatal(err)
}
case <-timeout:
t.Fatalf("timeout waiting for blocked goroutine %d", i)
}
}
d.check("done", p, cap(errs), 0, 0)
}
func TestWaitPoolDialError(t *testing.T) {
testErr := errors.New("test")
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: 1,
MaxActive: 1,
Dial: d.dial,
Wait: true,
}
defer p.Close()
c := p.Get()
errs := startGoroutines(p, "ERR", testErr)
d.check("before close", p, 1, 1, 1)
d.dialErr = errors.New("dial")
c.Close()
nilCount := 0
errCount := 0
timeout := time.After(2 * time.Second)
for i := 0; i < cap(errs); i++ {
select {
case err := <-errs:
switch err {
case nil:
nilCount++
case d.dialErr:
errCount++
default:
t.Fatalf("expected dial error or nil, got %v", err)
}
case <-timeout:
t.Fatalf("timeout waiting for blocked goroutine %d", i)
}
}
if nilCount != 1 {
t.Errorf("expected one nil error, got %d", nilCount)
}
if errCount != cap(errs)-1 {
t.Errorf("expected %d dial errors, got %d", cap(errs)-1, errCount)
}
d.check("done", p, cap(errs), 0, 0)
}
// Borrowing requires us to iterate over the idle connections, unlock the pool,
// and perform a blocking operation to check the connection still works. If
// TestOnBorrow fails, we must reacquire the lock and continue iteration. This
// test ensures that iteration will work correctly if multiple threads are
// iterating simultaneously.
func TestLocking_TestOnBorrowFails_PoolDoesntCrash(t *testing.T) {
const count = 100
// First we'll Create a pool where the pilfering of idle connections fails.
d := poolDialer{t: t}
p := &redis.Pool{
MaxIdle: count,
MaxActive: count,
Dial: d.dial,
TestOnBorrow: func(c redis.Conn, t time.Time) error {
return errors.New("No way back into the real world.")
},
}
defer p.Close()
// Fill the pool with idle connections.
conns := make([]redis.Conn, count)
for i := range conns {
conns[i] = p.Get()
}
for i := range conns {
conns[i].Close()
}
// Spawn a bunch of goroutines to thrash the pool.
var wg sync.WaitGroup
wg.Add(count)
for i := 0; i < count; i++ {
go func() {
c := p.Get()
if c.Err() != nil {
t.Errorf("pool get failed: %v", c.Err())
}
c.Close()
wg.Done()
}()
}
wg.Wait()
if d.dialed != count*2 {
t.Errorf("Expected %d dials, got %d", count*2, d.dialed)
}
}
func BenchmarkPoolGet(b *testing.B) {
b.StopTimer()
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
c := p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
c.Close()
defer p.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
c = p.Get()
c.Close()
}
}
func BenchmarkPoolGetErr(b *testing.B) {
b.StopTimer()
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
c := p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
c.Close()
defer p.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
c = p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
c.Close()
}
}
func BenchmarkPoolGetPing(b *testing.B) {
b.StopTimer()
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
c := p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
c.Close()
defer p.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
c = p.Get()
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
c.Close()
}
}

View File

@@ -1,157 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"errors"
"time"
)
// Subscription represents a subscribe or unsubscribe notification.
type Subscription struct {
// Kind is "subscribe", "unsubscribe", "psubscribe" or "punsubscribe"
Kind string
// The channel that was changed.
Channel string
// The current number of subscriptions for connection.
Count int
}
// Message represents a message notification.
type Message struct {
// The originating channel.
Channel string
// The message data.
Data []byte
}
// PMessage represents a pmessage notification.
type PMessage struct {
// The matched pattern.
Pattern string
// The originating channel.
Channel string
// The message data.
Data []byte
}
// Pong represents a pubsub pong notification.
type Pong struct {
Data string
}
// PubSubConn wraps a Conn with convenience methods for subscribers.
type PubSubConn struct {
Conn Conn
}
// Close closes the connection.
func (c PubSubConn) Close() error {
return c.Conn.Close()
}
// Subscribe subscribes the connection to the specified channels.
func (c PubSubConn) Subscribe(channel ...interface{}) error {
c.Conn.Send("SUBSCRIBE", channel...)
return c.Conn.Flush()
}
// PSubscribe subscribes the connection to the given patterns.
func (c PubSubConn) PSubscribe(channel ...interface{}) error {
c.Conn.Send("PSUBSCRIBE", channel...)
return c.Conn.Flush()
}
// Unsubscribe unsubscribes the connection from the given channels, or from all
// of them if none is given.
func (c PubSubConn) Unsubscribe(channel ...interface{}) error {
c.Conn.Send("UNSUBSCRIBE", channel...)
return c.Conn.Flush()
}
// PUnsubscribe unsubscribes the connection from the given patterns, or from all
// of them if none is given.
func (c PubSubConn) PUnsubscribe(channel ...interface{}) error {
c.Conn.Send("PUNSUBSCRIBE", channel...)
return c.Conn.Flush()
}
// Ping sends a PING to the server with the specified data.
//
// The connection must be subscribed to at least one channel or pattern when
// calling this method.
func (c PubSubConn) Ping(data string) error {
c.Conn.Send("PING", data)
return c.Conn.Flush()
}
// Receive returns a pushed message as a Subscription, Message, PMessage, Pong
// or error. The return value is intended to be used directly in a type switch
// as illustrated in the PubSubConn example.
func (c PubSubConn) Receive() interface{} {
return c.receiveInternal(c.Conn.Receive())
}
// ReceiveWithTimeout is like Receive, but it allows the application to
// override the connection's default timeout.
func (c PubSubConn) ReceiveWithTimeout(timeout time.Duration) interface{} {
return c.receiveInternal(ReceiveWithTimeout(c.Conn, timeout))
}
func (c PubSubConn) receiveInternal(replyArg interface{}, errArg error) interface{} {
reply, err := Values(replyArg, errArg)
if err != nil {
return err
}
var kind string
reply, err = Scan(reply, &kind)
if err != nil {
return err
}
switch kind {
case "message":
var m Message
if _, err := Scan(reply, &m.Channel, &m.Data); err != nil {
return err
}
return m
case "pmessage":
var pm PMessage
if _, err := Scan(reply, &pm.Pattern, &pm.Channel, &pm.Data); err != nil {
return err
}
return pm
case "subscribe", "psubscribe", "unsubscribe", "punsubscribe":
s := Subscription{Kind: kind}
if _, err := Scan(reply, &s.Channel, &s.Count); err != nil {
return err
}
return s
case "pong":
var p Pong
if _, err := Scan(reply, &p.Data); err != nil {
return err
}
return p
}
return errors.New("redigo: unknown pubsub notification")
}

View File

@@ -1,165 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// +build go1.7
package redis_test
import (
"context"
"fmt"
"time"
"github.com/garyburd/redigo/redis"
)
// listenPubSubChannels listens for messages on Redis pubsub channels. The
// onStart function is called after the channels are subscribed. The onMessage
// function is called for each message.
func listenPubSubChannels(ctx context.Context, redisServerAddr string,
onStart func() error,
onMessage func(channel string, data []byte) error,
channels ...string) error {
// A ping is set to the server with this period to test for the health of
// the connection and server.
const healthCheckPeriod = time.Minute
c, err := redis.Dial("tcp", redisServerAddr,
// Read timeout on server should be greater than ping period.
redis.DialReadTimeout(healthCheckPeriod+10*time.Second),
redis.DialWriteTimeout(10*time.Second))
if err != nil {
return err
}
defer c.Close()
psc := redis.PubSubConn{Conn: c}
if err := psc.Subscribe(redis.Args{}.AddFlat(channels)...); err != nil {
return err
}
done := make(chan error, 1)
// Start a goroutine to receive notifications from the server.
go func() {
for {
switch n := psc.Receive().(type) {
case error:
done <- n
return
case redis.Message:
if err := onMessage(n.Channel, n.Data); err != nil {
done <- err
return
}
case redis.Subscription:
switch n.Count {
case len(channels):
// Notify application when all channels are subscribed.
if err := onStart(); err != nil {
done <- err
return
}
case 0:
// Return from the goroutine when all channels are unsubscribed.
done <- nil
return
}
}
}
}()
ticker := time.NewTicker(healthCheckPeriod)
defer ticker.Stop()
loop:
for err == nil {
select {
case <-ticker.C:
// Send ping to test health of connection and server. If
// corresponding pong is not received, then receive on the
// connection will timeout and the receive goroutine will exit.
if err = psc.Ping(""); err != nil {
break loop
}
case <-ctx.Done():
break loop
case err := <-done:
// Return error from the receive goroutine.
return err
}
}
// Signal the receiving goroutine to exit by unsubscribing from all channels.
psc.Unsubscribe()
// Wait for goroutine to complete.
return <-done
}
func publish() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Do("PUBLISH", "c1", "hello")
c.Do("PUBLISH", "c2", "world")
c.Do("PUBLISH", "c1", "goodbye")
}
// This example shows how receive pubsub notifications with cancelation and
// health checks.
func ExamplePubSubConn() {
redisServerAddr, err := serverAddr()
if err != nil {
fmt.Println(err)
return
}
ctx, cancel := context.WithCancel(context.Background())
err = listenPubSubChannels(ctx,
redisServerAddr,
func() error {
// The start callback is a good place to backfill missed
// notifications. For the purpose of this example, a goroutine is
// started to send notifications.
go publish()
return nil
},
func(channel string, message []byte) error {
fmt.Printf("channel: %s, message: %s\n", channel, message)
// For the purpose of this example, cancel the listener's context
// after receiving last message sent by publish().
if string(message) == "goodbye" {
cancel()
}
return nil
},
"c1", "c2")
if err != nil {
fmt.Println(err)
return
}
// Output:
// channel: c1, message: hello
// channel: c2, message: world
// channel: c1, message: goodbye
}

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@@ -1,74 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"reflect"
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
func expectPushed(t *testing.T, c redis.PubSubConn, message string, expected interface{}) {
actual := c.Receive()
if !reflect.DeepEqual(actual, expected) {
t.Errorf("%s = %v, want %v", message, actual, expected)
}
}
func TestPushed(t *testing.T) {
pc, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer pc.Close()
sc, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer sc.Close()
c := redis.PubSubConn{Conn: sc}
c.Subscribe("c1")
expectPushed(t, c, "Subscribe(c1)", redis.Subscription{Kind: "subscribe", Channel: "c1", Count: 1})
c.Subscribe("c2")
expectPushed(t, c, "Subscribe(c2)", redis.Subscription{Kind: "subscribe", Channel: "c2", Count: 2})
c.PSubscribe("p1")
expectPushed(t, c, "PSubscribe(p1)", redis.Subscription{Kind: "psubscribe", Channel: "p1", Count: 3})
c.PSubscribe("p2")
expectPushed(t, c, "PSubscribe(p2)", redis.Subscription{Kind: "psubscribe", Channel: "p2", Count: 4})
c.PUnsubscribe()
expectPushed(t, c, "Punsubscribe(p1)", redis.Subscription{Kind: "punsubscribe", Channel: "p1", Count: 3})
expectPushed(t, c, "Punsubscribe()", redis.Subscription{Kind: "punsubscribe", Channel: "p2", Count: 2})
pc.Do("PUBLISH", "c1", "hello")
expectPushed(t, c, "PUBLISH c1 hello", redis.Message{Channel: "c1", Data: []byte("hello")})
c.Ping("hello")
expectPushed(t, c, `Ping("hello")`, redis.Pong{Data: "hello"})
c.Conn.Send("PING")
c.Conn.Flush()
expectPushed(t, c, `Send("PING")`, redis.Pong{})
c.Ping("timeout")
got := c.ReceiveWithTimeout(time.Minute)
if want := (redis.Pong{Data: "timeout"}); want != got {
t.Errorf("recv /w timeout got %v, want %v", got, want)
}
}

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@@ -1,117 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"errors"
"time"
)
// Error represents an error returned in a command reply.
type Error string
func (err Error) Error() string { return string(err) }
// Conn represents a connection to a Redis server.
type Conn interface {
// Close closes the connection.
Close() error
// Err returns a non-nil value when the connection is not usable.
Err() error
// Do sends a command to the server and returns the received reply.
Do(commandName string, args ...interface{}) (reply interface{}, err error)
// Send writes the command to the client's output buffer.
Send(commandName string, args ...interface{}) error
// Flush flushes the output buffer to the Redis server.
Flush() error
// Receive receives a single reply from the Redis server
Receive() (reply interface{}, err error)
}
// Argument is the interface implemented by an object which wants to control how
// the object is converted to Redis bulk strings.
type Argument interface {
// RedisArg returns a value to be encoded as a bulk string per the
// conversions listed in the section 'Executing Commands'.
// Implementations should typically return a []byte or string.
RedisArg() interface{}
}
// Scanner is implemented by an object which wants to control its value is
// interpreted when read from Redis.
type Scanner interface {
// RedisScan assigns a value from a Redis value. The argument src is one of
// the reply types listed in the section `Executing Commands`.
//
// An error should be returned if the value cannot be stored without
// loss of information.
RedisScan(src interface{}) error
}
// ConnWithTimeout is an optional interface that allows the caller to override
// a connection's default read timeout. This interface is useful for executing
// the BLPOP, BRPOP, BRPOPLPUSH, XREAD and other commands that block at the
// server.
//
// A connection's default read timeout is set with the DialReadTimeout dial
// option. Applications should rely on the default timeout for commands that do
// not block at the server.
//
// All of the Conn implementations in this package satisfy the ConnWithTimeout
// interface.
//
// Use the DoWithTimeout and ReceiveWithTimeout helper functions to simplify
// use of this interface.
type ConnWithTimeout interface {
Conn
// Do sends a command to the server and returns the received reply.
// The timeout overrides the read timeout set when dialing the
// connection.
DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (reply interface{}, err error)
// Receive receives a single reply from the Redis server. The timeout
// overrides the read timeout set when dialing the connection.
ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error)
}
var errTimeoutNotSupported = errors.New("redis: connection does not support ConnWithTimeout")
// DoWithTimeout executes a Redis command with the specified read timeout. If
// the connection does not satisfy the ConnWithTimeout interface, then an error
// is returned.
func DoWithTimeout(c Conn, timeout time.Duration, cmd string, args ...interface{}) (interface{}, error) {
cwt, ok := c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.DoWithTimeout(timeout, cmd, args...)
}
// ReceiveWithTimeout receives a reply with the specified read timeout. If the
// connection does not satisfy the ConnWithTimeout interface, then an error is
// returned.
func ReceiveWithTimeout(c Conn, timeout time.Duration) (interface{}, error) {
cwt, ok := c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.ReceiveWithTimeout(timeout)
}

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@@ -1,71 +0,0 @@
// Copyright 2017 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
type timeoutTestConn int
func (tc timeoutTestConn) Do(string, ...interface{}) (interface{}, error) {
return time.Duration(-1), nil
}
func (tc timeoutTestConn) DoWithTimeout(timeout time.Duration, cmd string, args ...interface{}) (interface{}, error) {
return timeout, nil
}
func (tc timeoutTestConn) Receive() (interface{}, error) {
return time.Duration(-1), nil
}
func (tc timeoutTestConn) ReceiveWithTimeout(timeout time.Duration) (interface{}, error) {
return timeout, nil
}
func (tc timeoutTestConn) Send(string, ...interface{}) error { return nil }
func (tc timeoutTestConn) Err() error { return nil }
func (tc timeoutTestConn) Close() error { return nil }
func (tc timeoutTestConn) Flush() error { return nil }
func testTimeout(t *testing.T, c redis.Conn) {
r, err := c.Do("PING")
if r != time.Duration(-1) || err != nil {
t.Errorf("Do() = %v, %v, want %v, %v", r, err, time.Duration(-1), nil)
}
r, err = redis.DoWithTimeout(c, time.Minute, "PING")
if r != time.Minute || err != nil {
t.Errorf("DoWithTimeout() = %v, %v, want %v, %v", r, err, time.Minute, nil)
}
r, err = c.Receive()
if r != time.Duration(-1) || err != nil {
t.Errorf("Receive() = %v, %v, want %v, %v", r, err, time.Duration(-1), nil)
}
r, err = redis.ReceiveWithTimeout(c, time.Minute)
if r != time.Minute || err != nil {
t.Errorf("ReceiveWithTimeout() = %v, %v, want %v, %v", r, err, time.Minute, nil)
}
}
func TestConnTimeout(t *testing.T) {
testTimeout(t, timeoutTestConn(0))
}
func TestPoolConnTimeout(t *testing.T) {
p := &redis.Pool{Dial: func() (redis.Conn, error) { return timeoutTestConn(0), nil }}
testTimeout(t, p.Get())
}

View File

@@ -1,479 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"errors"
"fmt"
"strconv"
)
// ErrNil indicates that a reply value is nil.
var ErrNil = errors.New("redigo: nil returned")
// Int is a helper that converts a command reply to an integer. If err is not
// equal to nil, then Int returns 0, err. Otherwise, Int converts the
// reply to an int as follows:
//
// Reply type Result
// integer int(reply), nil
// bulk string parsed reply, nil
// nil 0, ErrNil
// other 0, error
func Int(reply interface{}, err error) (int, error) {
if err != nil {
return 0, err
}
switch reply := reply.(type) {
case int64:
x := int(reply)
if int64(x) != reply {
return 0, strconv.ErrRange
}
return x, nil
case []byte:
n, err := strconv.ParseInt(string(reply), 10, 0)
return int(n), err
case nil:
return 0, ErrNil
case Error:
return 0, reply
}
return 0, fmt.Errorf("redigo: unexpected type for Int, got type %T", reply)
}
// Int64 is a helper that converts a command reply to 64 bit integer. If err is
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
// reply to an int64 as follows:
//
// Reply type Result
// integer reply, nil
// bulk string parsed reply, nil
// nil 0, ErrNil
// other 0, error
func Int64(reply interface{}, err error) (int64, error) {
if err != nil {
return 0, err
}
switch reply := reply.(type) {
case int64:
return reply, nil
case []byte:
n, err := strconv.ParseInt(string(reply), 10, 64)
return n, err
case nil:
return 0, ErrNil
case Error:
return 0, reply
}
return 0, fmt.Errorf("redigo: unexpected type for Int64, got type %T", reply)
}
var errNegativeInt = errors.New("redigo: unexpected value for Uint64")
// Uint64 is a helper that converts a command reply to 64 bit integer. If err is
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
// reply to an int64 as follows:
//
// Reply type Result
// integer reply, nil
// bulk string parsed reply, nil
// nil 0, ErrNil
// other 0, error
func Uint64(reply interface{}, err error) (uint64, error) {
if err != nil {
return 0, err
}
switch reply := reply.(type) {
case int64:
if reply < 0 {
return 0, errNegativeInt
}
return uint64(reply), nil
case []byte:
n, err := strconv.ParseUint(string(reply), 10, 64)
return n, err
case nil:
return 0, ErrNil
case Error:
return 0, reply
}
return 0, fmt.Errorf("redigo: unexpected type for Uint64, got type %T", reply)
}
// Float64 is a helper that converts a command reply to 64 bit float. If err is
// not equal to nil, then Float64 returns 0, err. Otherwise, Float64 converts
// the reply to an int as follows:
//
// Reply type Result
// bulk string parsed reply, nil
// nil 0, ErrNil
// other 0, error
func Float64(reply interface{}, err error) (float64, error) {
if err != nil {
return 0, err
}
switch reply := reply.(type) {
case []byte:
n, err := strconv.ParseFloat(string(reply), 64)
return n, err
case nil:
return 0, ErrNil
case Error:
return 0, reply
}
return 0, fmt.Errorf("redigo: unexpected type for Float64, got type %T", reply)
}
// String is a helper that converts a command reply to a string. If err is not
// equal to nil, then String returns "", err. Otherwise String converts the
// reply to a string as follows:
//
// Reply type Result
// bulk string string(reply), nil
// simple string reply, nil
// nil "", ErrNil
// other "", error
func String(reply interface{}, err error) (string, error) {
if err != nil {
return "", err
}
switch reply := reply.(type) {
case []byte:
return string(reply), nil
case string:
return reply, nil
case nil:
return "", ErrNil
case Error:
return "", reply
}
return "", fmt.Errorf("redigo: unexpected type for String, got type %T", reply)
}
// Bytes is a helper that converts a command reply to a slice of bytes. If err
// is not equal to nil, then Bytes returns nil, err. Otherwise Bytes converts
// the reply to a slice of bytes as follows:
//
// Reply type Result
// bulk string reply, nil
// simple string []byte(reply), nil
// nil nil, ErrNil
// other nil, error
func Bytes(reply interface{}, err error) ([]byte, error) {
if err != nil {
return nil, err
}
switch reply := reply.(type) {
case []byte:
return reply, nil
case string:
return []byte(reply), nil
case nil:
return nil, ErrNil
case Error:
return nil, reply
}
return nil, fmt.Errorf("redigo: unexpected type for Bytes, got type %T", reply)
}
// Bool is a helper that converts a command reply to a boolean. If err is not
// equal to nil, then Bool returns false, err. Otherwise Bool converts the
// reply to boolean as follows:
//
// Reply type Result
// integer value != 0, nil
// bulk string strconv.ParseBool(reply)
// nil false, ErrNil
// other false, error
func Bool(reply interface{}, err error) (bool, error) {
if err != nil {
return false, err
}
switch reply := reply.(type) {
case int64:
return reply != 0, nil
case []byte:
return strconv.ParseBool(string(reply))
case nil:
return false, ErrNil
case Error:
return false, reply
}
return false, fmt.Errorf("redigo: unexpected type for Bool, got type %T", reply)
}
// MultiBulk is a helper that converts an array command reply to a []interface{}.
//
// Deprecated: Use Values instead.
func MultiBulk(reply interface{}, err error) ([]interface{}, error) { return Values(reply, err) }
// Values is a helper that converts an array command reply to a []interface{}.
// If err is not equal to nil, then Values returns nil, err. Otherwise, Values
// converts the reply as follows:
//
// Reply type Result
// array reply, nil
// nil nil, ErrNil
// other nil, error
func Values(reply interface{}, err error) ([]interface{}, error) {
if err != nil {
return nil, err
}
switch reply := reply.(type) {
case []interface{}:
return reply, nil
case nil:
return nil, ErrNil
case Error:
return nil, reply
}
return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
}
func sliceHelper(reply interface{}, err error, name string, makeSlice func(int), assign func(int, interface{}) error) error {
if err != nil {
return err
}
switch reply := reply.(type) {
case []interface{}:
makeSlice(len(reply))
for i := range reply {
if reply[i] == nil {
continue
}
if err := assign(i, reply[i]); err != nil {
return err
}
}
return nil
case nil:
return ErrNil
case Error:
return reply
}
return fmt.Errorf("redigo: unexpected type for %s, got type %T", name, reply)
}
// Float64s is a helper that converts an array command reply to a []float64. If
// err is not equal to nil, then Float64s returns nil, err. Nil array items are
// converted to 0 in the output slice. Floats64 returns an error if an array
// item is not a bulk string or nil.
func Float64s(reply interface{}, err error) ([]float64, error) {
var result []float64
err = sliceHelper(reply, err, "Float64s", func(n int) { result = make([]float64, n) }, func(i int, v interface{}) error {
p, ok := v.([]byte)
if !ok {
return fmt.Errorf("redigo: unexpected element type for Floats64, got type %T", v)
}
f, err := strconv.ParseFloat(string(p), 64)
result[i] = f
return err
})
return result, err
}
// Strings is a helper that converts an array command reply to a []string. If
// err is not equal to nil, then Strings returns nil, err. Nil array items are
// converted to "" in the output slice. Strings returns an error if an array
// item is not a bulk string or nil.
func Strings(reply interface{}, err error) ([]string, error) {
var result []string
err = sliceHelper(reply, err, "Strings", func(n int) { result = make([]string, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case string:
result[i] = v
return nil
case []byte:
result[i] = string(v)
return nil
default:
return fmt.Errorf("redigo: unexpected element type for Strings, got type %T", v)
}
})
return result, err
}
// ByteSlices is a helper that converts an array command reply to a [][]byte.
// If err is not equal to nil, then ByteSlices returns nil, err. Nil array
// items are stay nil. ByteSlices returns an error if an array item is not a
// bulk string or nil.
func ByteSlices(reply interface{}, err error) ([][]byte, error) {
var result [][]byte
err = sliceHelper(reply, err, "ByteSlices", func(n int) { result = make([][]byte, n) }, func(i int, v interface{}) error {
p, ok := v.([]byte)
if !ok {
return fmt.Errorf("redigo: unexpected element type for ByteSlices, got type %T", v)
}
result[i] = p
return nil
})
return result, err
}
// Int64s is a helper that converts an array command reply to a []int64.
// If err is not equal to nil, then Int64s returns nil, err. Nil array
// items are stay nil. Int64s returns an error if an array item is not a
// bulk string or nil.
func Int64s(reply interface{}, err error) ([]int64, error) {
var result []int64
err = sliceHelper(reply, err, "Int64s", func(n int) { result = make([]int64, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case int64:
result[i] = v
return nil
case []byte:
n, err := strconv.ParseInt(string(v), 10, 64)
result[i] = n
return err
default:
return fmt.Errorf("redigo: unexpected element type for Int64s, got type %T", v)
}
})
return result, err
}
// Ints is a helper that converts an array command reply to a []in.
// If err is not equal to nil, then Ints returns nil, err. Nil array
// items are stay nil. Ints returns an error if an array item is not a
// bulk string or nil.
func Ints(reply interface{}, err error) ([]int, error) {
var result []int
err = sliceHelper(reply, err, "Ints", func(n int) { result = make([]int, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case int64:
n := int(v)
if int64(n) != v {
return strconv.ErrRange
}
result[i] = n
return nil
case []byte:
n, err := strconv.Atoi(string(v))
result[i] = n
return err
default:
return fmt.Errorf("redigo: unexpected element type for Ints, got type %T", v)
}
})
return result, err
}
// StringMap is a helper that converts an array of strings (alternating key, value)
// into a map[string]string. The HGETALL and CONFIG GET commands return replies in this format.
// Requires an even number of values in result.
func StringMap(result interface{}, err error) (map[string]string, error) {
values, err := Values(result, err)
if err != nil {
return nil, err
}
if len(values)%2 != 0 {
return nil, errors.New("redigo: StringMap expects even number of values result")
}
m := make(map[string]string, len(values)/2)
for i := 0; i < len(values); i += 2 {
key, okKey := values[i].([]byte)
value, okValue := values[i+1].([]byte)
if !okKey || !okValue {
return nil, errors.New("redigo: StringMap key not a bulk string value")
}
m[string(key)] = string(value)
}
return m, nil
}
// IntMap is a helper that converts an array of strings (alternating key, value)
// into a map[string]int. The HGETALL commands return replies in this format.
// Requires an even number of values in result.
func IntMap(result interface{}, err error) (map[string]int, error) {
values, err := Values(result, err)
if err != nil {
return nil, err
}
if len(values)%2 != 0 {
return nil, errors.New("redigo: IntMap expects even number of values result")
}
m := make(map[string]int, len(values)/2)
for i := 0; i < len(values); i += 2 {
key, ok := values[i].([]byte)
if !ok {
return nil, errors.New("redigo: IntMap key not a bulk string value")
}
value, err := Int(values[i+1], nil)
if err != nil {
return nil, err
}
m[string(key)] = value
}
return m, nil
}
// Int64Map is a helper that converts an array of strings (alternating key, value)
// into a map[string]int64. The HGETALL commands return replies in this format.
// Requires an even number of values in result.
func Int64Map(result interface{}, err error) (map[string]int64, error) {
values, err := Values(result, err)
if err != nil {
return nil, err
}
if len(values)%2 != 0 {
return nil, errors.New("redigo: Int64Map expects even number of values result")
}
m := make(map[string]int64, len(values)/2)
for i := 0; i < len(values); i += 2 {
key, ok := values[i].([]byte)
if !ok {
return nil, errors.New("redigo: Int64Map key not a bulk string value")
}
value, err := Int64(values[i+1], nil)
if err != nil {
return nil, err
}
m[string(key)] = value
}
return m, nil
}
// Positions is a helper that converts an array of positions (lat, long)
// into a [][2]float64. The GEOPOS command returns replies in this format.
func Positions(result interface{}, err error) ([]*[2]float64, error) {
values, err := Values(result, err)
if err != nil {
return nil, err
}
positions := make([]*[2]float64, len(values))
for i := range values {
if values[i] == nil {
continue
}
p, ok := values[i].([]interface{})
if !ok {
return nil, fmt.Errorf("redigo: unexpected element type for interface slice, got type %T", values[i])
}
if len(p) != 2 {
return nil, fmt.Errorf("redigo: unexpected number of values for a member position, got %d", len(p))
}
lat, err := Float64(p[0], nil)
if err != nil {
return nil, err
}
long, err := Float64(p[1], nil)
if err != nil {
return nil, err
}
positions[i] = &[2]float64{lat, long}
}
return positions, nil
}

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@@ -1,209 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"fmt"
"reflect"
"testing"
"github.com/garyburd/redigo/redis"
)
type valueError struct {
v interface{}
err error
}
func ve(v interface{}, err error) valueError {
return valueError{v, err}
}
var replyTests = []struct {
name interface{}
actual valueError
expected valueError
}{
{
"ints([[]byte, []byte])",
ve(redis.Ints([]interface{}{[]byte("4"), []byte("5")}, nil)),
ve([]int{4, 5}, nil),
},
{
"ints([nt64, int64])",
ve(redis.Ints([]interface{}{int64(4), int64(5)}, nil)),
ve([]int{4, 5}, nil),
},
{
"ints([[]byte, nil, []byte])",
ve(redis.Ints([]interface{}{[]byte("4"), nil, []byte("5")}, nil)),
ve([]int{4, 0, 5}, nil),
},
{
"ints(nil)",
ve(redis.Ints(nil, nil)),
ve([]int(nil), redis.ErrNil),
},
{
"int64s([[]byte, []byte])",
ve(redis.Int64s([]interface{}{[]byte("4"), []byte("5")}, nil)),
ve([]int64{4, 5}, nil),
},
{
"int64s([int64, int64])",
ve(redis.Int64s([]interface{}{int64(4), int64(5)}, nil)),
ve([]int64{4, 5}, nil),
},
{
"strings([[]byte, []bytev2])",
ve(redis.Strings([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
ve([]string{"v1", "v2"}, nil),
},
{
"strings([string, string])",
ve(redis.Strings([]interface{}{"v1", "v2"}, nil)),
ve([]string{"v1", "v2"}, nil),
},
{
"byteslices([v1, v2])",
ve(redis.ByteSlices([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
ve([][]byte{[]byte("v1"), []byte("v2")}, nil),
},
{
"float64s([v1, v2])",
ve(redis.Float64s([]interface{}{[]byte("1.234"), []byte("5.678")}, nil)),
ve([]float64{1.234, 5.678}, nil),
},
{
"values([v1, v2])",
ve(redis.Values([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
ve([]interface{}{[]byte("v1"), []byte("v2")}, nil),
},
{
"values(nil)",
ve(redis.Values(nil, nil)),
ve([]interface{}(nil), redis.ErrNil),
},
{
"float64(1.0)",
ve(redis.Float64([]byte("1.0"), nil)),
ve(float64(1.0), nil),
},
{
"float64(nil)",
ve(redis.Float64(nil, nil)),
ve(float64(0.0), redis.ErrNil),
},
{
"uint64(1)",
ve(redis.Uint64(int64(1), nil)),
ve(uint64(1), nil),
},
{
"uint64(-1)",
ve(redis.Uint64(int64(-1), nil)),
ve(uint64(0), redis.ErrNegativeInt),
},
{
"positions([[1, 2], nil, [3, 4]])",
ve(redis.Positions([]interface{}{[]interface{}{[]byte("1"), []byte("2")}, nil, []interface{}{[]byte("3"), []byte("4")}}, nil)),
ve([]*[2]float64{{1.0, 2.0}, nil, {3.0, 4.0}}, nil),
},
}
func TestReply(t *testing.T) {
for _, rt := range replyTests {
if rt.actual.err != rt.expected.err {
t.Errorf("%s returned err %v, want %v", rt.name, rt.actual.err, rt.expected.err)
continue
}
if !reflect.DeepEqual(rt.actual.v, rt.expected.v) {
t.Errorf("%s=%+v, want %+v", rt.name, rt.actual.v, rt.expected.v)
}
}
}
// dial wraps DialDefaultServer() with a more suitable function name for examples.
func dial() (redis.Conn, error) {
return redis.DialDefaultServer()
}
// serverAddr wraps DefaultServerAddr() with a more suitable function name for examples.
func serverAddr() (string, error) {
return redis.DefaultServerAddr()
}
func ExampleBool() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Do("SET", "foo", 1)
exists, _ := redis.Bool(c.Do("EXISTS", "foo"))
fmt.Printf("%#v\n", exists)
// Output:
// true
}
func ExampleInt() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Do("SET", "k1", 1)
n, _ := redis.Int(c.Do("GET", "k1"))
fmt.Printf("%#v\n", n)
n, _ = redis.Int(c.Do("INCR", "k1"))
fmt.Printf("%#v\n", n)
// Output:
// 1
// 2
}
func ExampleInts() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Do("SADD", "set_with_integers", 4, 5, 6)
ints, _ := redis.Ints(c.Do("SMEMBERS", "set_with_integers"))
fmt.Printf("%#v\n", ints)
// Output:
// []int{4, 5, 6}
}
func ExampleString() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Do("SET", "hello", "world")
s, err := redis.String(c.Do("GET", "hello"))
fmt.Printf("%#v\n", s)
// Output:
// "world"
}

View File

@@ -1,585 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"errors"
"fmt"
"reflect"
"strconv"
"strings"
"sync"
)
func ensureLen(d reflect.Value, n int) {
if n > d.Cap() {
d.Set(reflect.MakeSlice(d.Type(), n, n))
} else {
d.SetLen(n)
}
}
func cannotConvert(d reflect.Value, s interface{}) error {
var sname string
switch s.(type) {
case string:
sname = "Redis simple string"
case Error:
sname = "Redis error"
case int64:
sname = "Redis integer"
case []byte:
sname = "Redis bulk string"
case []interface{}:
sname = "Redis array"
default:
sname = reflect.TypeOf(s).String()
}
return fmt.Errorf("cannot convert from %s to %s", sname, d.Type())
}
func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
switch d.Type().Kind() {
case reflect.Float32, reflect.Float64:
var x float64
x, err = strconv.ParseFloat(string(s), d.Type().Bits())
d.SetFloat(x)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
var x int64
x, err = strconv.ParseInt(string(s), 10, d.Type().Bits())
d.SetInt(x)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
var x uint64
x, err = strconv.ParseUint(string(s), 10, d.Type().Bits())
d.SetUint(x)
case reflect.Bool:
var x bool
x, err = strconv.ParseBool(string(s))
d.SetBool(x)
case reflect.String:
d.SetString(string(s))
case reflect.Slice:
if d.Type().Elem().Kind() != reflect.Uint8 {
err = cannotConvert(d, s)
} else {
d.SetBytes(s)
}
default:
err = cannotConvert(d, s)
}
return
}
func convertAssignInt(d reflect.Value, s int64) (err error) {
switch d.Type().Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
d.SetInt(s)
if d.Int() != s {
err = strconv.ErrRange
d.SetInt(0)
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
if s < 0 {
err = strconv.ErrRange
} else {
x := uint64(s)
d.SetUint(x)
if d.Uint() != x {
err = strconv.ErrRange
d.SetUint(0)
}
}
case reflect.Bool:
d.SetBool(s != 0)
default:
err = cannotConvert(d, s)
}
return
}
func convertAssignValue(d reflect.Value, s interface{}) (err error) {
if d.Kind() != reflect.Ptr {
if d.CanAddr() {
d2 := d.Addr()
if d2.CanInterface() {
if scanner, ok := d2.Interface().(Scanner); ok {
return scanner.RedisScan(s)
}
}
}
} else if d.CanInterface() {
// Already a reflect.Ptr
if d.IsNil() {
d.Set(reflect.New(d.Type().Elem()))
}
if scanner, ok := d.Interface().(Scanner); ok {
return scanner.RedisScan(s)
}
}
switch s := s.(type) {
case []byte:
err = convertAssignBulkString(d, s)
case int64:
err = convertAssignInt(d, s)
default:
err = cannotConvert(d, s)
}
return err
}
func convertAssignArray(d reflect.Value, s []interface{}) error {
if d.Type().Kind() != reflect.Slice {
return cannotConvert(d, s)
}
ensureLen(d, len(s))
for i := 0; i < len(s); i++ {
if err := convertAssignValue(d.Index(i), s[i]); err != nil {
return err
}
}
return nil
}
func convertAssign(d interface{}, s interface{}) (err error) {
if scanner, ok := d.(Scanner); ok {
return scanner.RedisScan(s)
}
// Handle the most common destination types using type switches and
// fall back to reflection for all other types.
switch s := s.(type) {
case nil:
// ignore
case []byte:
switch d := d.(type) {
case *string:
*d = string(s)
case *int:
*d, err = strconv.Atoi(string(s))
case *bool:
*d, err = strconv.ParseBool(string(s))
case *[]byte:
*d = s
case *interface{}:
*d = s
case nil:
// skip value
default:
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
err = cannotConvert(d, s)
} else {
err = convertAssignBulkString(d.Elem(), s)
}
}
case int64:
switch d := d.(type) {
case *int:
x := int(s)
if int64(x) != s {
err = strconv.ErrRange
x = 0
}
*d = x
case *bool:
*d = s != 0
case *interface{}:
*d = s
case nil:
// skip value
default:
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
err = cannotConvert(d, s)
} else {
err = convertAssignInt(d.Elem(), s)
}
}
case string:
switch d := d.(type) {
case *string:
*d = s
case *interface{}:
*d = s
case nil:
// skip value
default:
err = cannotConvert(reflect.ValueOf(d), s)
}
case []interface{}:
switch d := d.(type) {
case *[]interface{}:
*d = s
case *interface{}:
*d = s
case nil:
// skip value
default:
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
err = cannotConvert(d, s)
} else {
err = convertAssignArray(d.Elem(), s)
}
}
case Error:
err = s
default:
err = cannotConvert(reflect.ValueOf(d), s)
}
return
}
// Scan copies from src to the values pointed at by dest.
//
// Scan uses RedisScan if available otherwise:
//
// The values pointed at by dest must be an integer, float, boolean, string,
// []byte, interface{} or slices of these types. Scan uses the standard strconv
// package to convert bulk strings to numeric and boolean types.
//
// If a dest value is nil, then the corresponding src value is skipped.
//
// If a src element is nil, then the corresponding dest value is not modified.
//
// To enable easy use of Scan in a loop, Scan returns the slice of src
// following the copied values.
func Scan(src []interface{}, dest ...interface{}) ([]interface{}, error) {
if len(src) < len(dest) {
return nil, errors.New("redigo.Scan: array short")
}
var err error
for i, d := range dest {
err = convertAssign(d, src[i])
if err != nil {
err = fmt.Errorf("redigo.Scan: cannot assign to dest %d: %v", i, err)
break
}
}
return src[len(dest):], err
}
type fieldSpec struct {
name string
index []int
omitEmpty bool
}
type structSpec struct {
m map[string]*fieldSpec
l []*fieldSpec
}
func (ss *structSpec) fieldSpec(name []byte) *fieldSpec {
return ss.m[string(name)]
}
func compileStructSpec(t reflect.Type, depth map[string]int, index []int, ss *structSpec) {
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
switch {
case f.PkgPath != "" && !f.Anonymous:
// Ignore unexported fields.
case f.Anonymous:
// TODO: Handle pointers. Requires change to decoder and
// protection against infinite recursion.
if f.Type.Kind() == reflect.Struct {
compileStructSpec(f.Type, depth, append(index, i), ss)
}
default:
fs := &fieldSpec{name: f.Name}
tag := f.Tag.Get("redis")
p := strings.Split(tag, ",")
if len(p) > 0 {
if p[0] == "-" {
continue
}
if len(p[0]) > 0 {
fs.name = p[0]
}
for _, s := range p[1:] {
switch s {
case "omitempty":
fs.omitEmpty = true
default:
panic(fmt.Errorf("redigo: unknown field tag %s for type %s", s, t.Name()))
}
}
}
d, found := depth[fs.name]
if !found {
d = 1 << 30
}
switch {
case len(index) == d:
// At same depth, remove from result.
delete(ss.m, fs.name)
j := 0
for i := 0; i < len(ss.l); i++ {
if fs.name != ss.l[i].name {
ss.l[j] = ss.l[i]
j += 1
}
}
ss.l = ss.l[:j]
case len(index) < d:
fs.index = make([]int, len(index)+1)
copy(fs.index, index)
fs.index[len(index)] = i
depth[fs.name] = len(index)
ss.m[fs.name] = fs
ss.l = append(ss.l, fs)
}
}
}
}
var (
structSpecMutex sync.RWMutex
structSpecCache = make(map[reflect.Type]*structSpec)
defaultFieldSpec = &fieldSpec{}
)
func structSpecForType(t reflect.Type) *structSpec {
structSpecMutex.RLock()
ss, found := structSpecCache[t]
structSpecMutex.RUnlock()
if found {
return ss
}
structSpecMutex.Lock()
defer structSpecMutex.Unlock()
ss, found = structSpecCache[t]
if found {
return ss
}
ss = &structSpec{m: make(map[string]*fieldSpec)}
compileStructSpec(t, make(map[string]int), nil, ss)
structSpecCache[t] = ss
return ss
}
var errScanStructValue = errors.New("redigo.ScanStruct: value must be non-nil pointer to a struct")
// ScanStruct scans alternating names and values from src to a struct. The
// HGETALL and CONFIG GET commands return replies in this format.
//
// ScanStruct uses exported field names to match values in the response. Use
// 'redis' field tag to override the name:
//
// Field int `redis:"myName"`
//
// Fields with the tag redis:"-" are ignored.
//
// Each field uses RedisScan if available otherwise:
// Integer, float, boolean, string and []byte fields are supported. Scan uses the
// standard strconv package to convert bulk string values to numeric and
// boolean types.
//
// If a src element is nil, then the corresponding field is not modified.
func ScanStruct(src []interface{}, dest interface{}) error {
d := reflect.ValueOf(dest)
if d.Kind() != reflect.Ptr || d.IsNil() {
return errScanStructValue
}
d = d.Elem()
if d.Kind() != reflect.Struct {
return errScanStructValue
}
ss := structSpecForType(d.Type())
if len(src)%2 != 0 {
return errors.New("redigo.ScanStruct: number of values not a multiple of 2")
}
for i := 0; i < len(src); i += 2 {
s := src[i+1]
if s == nil {
continue
}
name, ok := src[i].([]byte)
if !ok {
return fmt.Errorf("redigo.ScanStruct: key %d not a bulk string value", i)
}
fs := ss.fieldSpec(name)
if fs == nil {
continue
}
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
return fmt.Errorf("redigo.ScanStruct: cannot assign field %s: %v", fs.name, err)
}
}
return nil
}
var (
errScanSliceValue = errors.New("redigo.ScanSlice: dest must be non-nil pointer to a struct")
)
// ScanSlice scans src to the slice pointed to by dest. The elements the dest
// slice must be integer, float, boolean, string, struct or pointer to struct
// values.
//
// Struct fields must be integer, float, boolean or string values. All struct
// fields are used unless a subset is specified using fieldNames.
func ScanSlice(src []interface{}, dest interface{}, fieldNames ...string) error {
d := reflect.ValueOf(dest)
if d.Kind() != reflect.Ptr || d.IsNil() {
return errScanSliceValue
}
d = d.Elem()
if d.Kind() != reflect.Slice {
return errScanSliceValue
}
isPtr := false
t := d.Type().Elem()
if t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct {
isPtr = true
t = t.Elem()
}
if t.Kind() != reflect.Struct {
ensureLen(d, len(src))
for i, s := range src {
if s == nil {
continue
}
if err := convertAssignValue(d.Index(i), s); err != nil {
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d: %v", i, err)
}
}
return nil
}
ss := structSpecForType(t)
fss := ss.l
if len(fieldNames) > 0 {
fss = make([]*fieldSpec, len(fieldNames))
for i, name := range fieldNames {
fss[i] = ss.m[name]
if fss[i] == nil {
return fmt.Errorf("redigo.ScanSlice: ScanSlice bad field name %s", name)
}
}
}
if len(fss) == 0 {
return errors.New("redigo.ScanSlice: no struct fields")
}
n := len(src) / len(fss)
if n*len(fss) != len(src) {
return errors.New("redigo.ScanSlice: length not a multiple of struct field count")
}
ensureLen(d, n)
for i := 0; i < n; i++ {
d := d.Index(i)
if isPtr {
if d.IsNil() {
d.Set(reflect.New(t))
}
d = d.Elem()
}
for j, fs := range fss {
s := src[i*len(fss)+j]
if s == nil {
continue
}
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d to field %s: %v", i*len(fss)+j, fs.name, err)
}
}
}
return nil
}
// Args is a helper for constructing command arguments from structured values.
type Args []interface{}
// Add returns the result of appending value to args.
func (args Args) Add(value ...interface{}) Args {
return append(args, value...)
}
// AddFlat returns the result of appending the flattened value of v to args.
//
// Maps are flattened by appending the alternating keys and map values to args.
//
// Slices are flattened by appending the slice elements to args.
//
// Structs are flattened by appending the alternating names and values of
// exported fields to args. If v is a nil struct pointer, then nothing is
// appended. The 'redis' field tag overrides struct field names. See ScanStruct
// for more information on the use of the 'redis' field tag.
//
// Other types are appended to args as is.
func (args Args) AddFlat(v interface{}) Args {
rv := reflect.ValueOf(v)
switch rv.Kind() {
case reflect.Struct:
args = flattenStruct(args, rv)
case reflect.Slice:
for i := 0; i < rv.Len(); i++ {
args = append(args, rv.Index(i).Interface())
}
case reflect.Map:
for _, k := range rv.MapKeys() {
args = append(args, k.Interface(), rv.MapIndex(k).Interface())
}
case reflect.Ptr:
if rv.Type().Elem().Kind() == reflect.Struct {
if !rv.IsNil() {
args = flattenStruct(args, rv.Elem())
}
} else {
args = append(args, v)
}
default:
args = append(args, v)
}
return args
}
func flattenStruct(args Args, v reflect.Value) Args {
ss := structSpecForType(v.Type())
for _, fs := range ss.l {
fv := v.FieldByIndex(fs.index)
if fs.omitEmpty {
var empty = false
switch fv.Kind() {
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
empty = fv.Len() == 0
case reflect.Bool:
empty = !fv.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
empty = fv.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
empty = fv.Uint() == 0
case reflect.Float32, reflect.Float64:
empty = fv.Float() == 0
case reflect.Interface, reflect.Ptr:
empty = fv.IsNil()
}
if empty {
continue
}
}
args = append(args, fs.name, fv.Interface())
}
return args
}

View File

@@ -1,494 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"fmt"
"math"
"reflect"
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
type durationScan struct {
time.Duration `redis:"sd"`
}
func (t *durationScan) RedisScan(src interface{}) (err error) {
if t == nil {
return fmt.Errorf("nil pointer")
}
switch src := src.(type) {
case string:
t.Duration, err = time.ParseDuration(src)
case []byte:
t.Duration, err = time.ParseDuration(string(src))
case int64:
t.Duration = time.Duration(src)
default:
err = fmt.Errorf("cannot convert from %T to %T", src, t)
}
return err
}
var scanConversionTests = []struct {
src interface{}
dest interface{}
}{
{[]byte("-inf"), math.Inf(-1)},
{[]byte("+inf"), math.Inf(1)},
{[]byte("0"), float64(0)},
{[]byte("3.14159"), float64(3.14159)},
{[]byte("3.14"), float32(3.14)},
{[]byte("-100"), int(-100)},
{[]byte("101"), int(101)},
{int64(102), int(102)},
{[]byte("103"), uint(103)},
{int64(104), uint(104)},
{[]byte("105"), int8(105)},
{int64(106), int8(106)},
{[]byte("107"), uint8(107)},
{int64(108), uint8(108)},
{[]byte("0"), false},
{int64(0), false},
{[]byte("f"), false},
{[]byte("1"), true},
{int64(1), true},
{[]byte("t"), true},
{"hello", "hello"},
{[]byte("hello"), "hello"},
{[]byte("world"), []byte("world")},
{[]interface{}{[]byte("foo")}, []interface{}{[]byte("foo")}},
{[]interface{}{[]byte("foo")}, []string{"foo"}},
{[]interface{}{[]byte("hello"), []byte("world")}, []string{"hello", "world"}},
{[]interface{}{[]byte("bar")}, [][]byte{[]byte("bar")}},
{[]interface{}{[]byte("1")}, []int{1}},
{[]interface{}{[]byte("1"), []byte("2")}, []int{1, 2}},
{[]interface{}{[]byte("1"), []byte("2")}, []float64{1, 2}},
{[]interface{}{[]byte("1")}, []byte{1}},
{[]interface{}{[]byte("1")}, []bool{true}},
{"1m", durationScan{Duration: time.Minute}},
{[]byte("1m"), durationScan{Duration: time.Minute}},
{time.Minute.Nanoseconds(), durationScan{Duration: time.Minute}},
{[]interface{}{[]byte("1m")}, []durationScan{durationScan{Duration: time.Minute}}},
{[]interface{}{[]byte("1m")}, []*durationScan{&durationScan{Duration: time.Minute}}},
}
func TestScanConversion(t *testing.T) {
for _, tt := range scanConversionTests {
values := []interface{}{tt.src}
dest := reflect.New(reflect.TypeOf(tt.dest))
values, err := redis.Scan(values, dest.Interface())
if err != nil {
t.Errorf("Scan(%v) returned error %v", tt, err)
continue
}
if !reflect.DeepEqual(tt.dest, dest.Elem().Interface()) {
t.Errorf("Scan(%v) returned %v, want %v", tt, dest.Elem().Interface(), tt.dest)
}
}
}
var scanConversionErrorTests = []struct {
src interface{}
dest interface{}
}{
{[]byte("1234"), byte(0)},
{int64(1234), byte(0)},
{[]byte("-1"), byte(0)},
{int64(-1), byte(0)},
{[]byte("junk"), false},
{redis.Error("blah"), false},
{redis.Error("blah"), durationScan{Duration: time.Minute}},
{"invalid", durationScan{Duration: time.Minute}},
}
func TestScanConversionError(t *testing.T) {
for _, tt := range scanConversionErrorTests {
values := []interface{}{tt.src}
dest := reflect.New(reflect.TypeOf(tt.dest))
values, err := redis.Scan(values, dest.Interface())
if err == nil {
t.Errorf("Scan(%v) did not return error", tt)
}
}
}
func ExampleScan() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Send("HMSET", "album:1", "title", "Red", "rating", 5)
c.Send("HMSET", "album:2", "title", "Earthbound", "rating", 1)
c.Send("HMSET", "album:3", "title", "Beat")
c.Send("LPUSH", "albums", "1")
c.Send("LPUSH", "albums", "2")
c.Send("LPUSH", "albums", "3")
values, err := redis.Values(c.Do("SORT", "albums",
"BY", "album:*->rating",
"GET", "album:*->title",
"GET", "album:*->rating"))
if err != nil {
fmt.Println(err)
return
}
for len(values) > 0 {
var title string
rating := -1 // initialize to illegal value to detect nil.
values, err = redis.Scan(values, &title, &rating)
if err != nil {
fmt.Println(err)
return
}
if rating == -1 {
fmt.Println(title, "not-rated")
} else {
fmt.Println(title, rating)
}
}
// Output:
// Beat not-rated
// Earthbound 1
// Red 5
}
type s0 struct {
X int
Y int `redis:"y"`
Bt bool
}
type s1 struct {
X int `redis:"-"`
I int `redis:"i"`
U uint `redis:"u"`
S string `redis:"s"`
P []byte `redis:"p"`
B bool `redis:"b"`
Bt bool
Bf bool
s0
Sd durationScan `redis:"sd"`
Sdp *durationScan `redis:"sdp"`
}
var scanStructTests = []struct {
title string
reply []string
value interface{}
}{
{"basic",
[]string{
"i", "-1234",
"u", "5678",
"s", "hello",
"p", "world",
"b", "t",
"Bt", "1",
"Bf", "0",
"X", "123",
"y", "456",
"sd", "1m",
"sdp", "1m",
},
&s1{
I: -1234,
U: 5678,
S: "hello",
P: []byte("world"),
B: true,
Bt: true,
Bf: false,
s0: s0{X: 123, Y: 456},
Sd: durationScan{Duration: time.Minute},
Sdp: &durationScan{Duration: time.Minute},
},
},
}
func TestScanStruct(t *testing.T) {
for _, tt := range scanStructTests {
var reply []interface{}
for _, v := range tt.reply {
reply = append(reply, []byte(v))
}
value := reflect.New(reflect.ValueOf(tt.value).Type().Elem())
if err := redis.ScanStruct(reply, value.Interface()); err != nil {
t.Fatalf("ScanStruct(%s) returned error %v", tt.title, err)
}
if !reflect.DeepEqual(value.Interface(), tt.value) {
t.Fatalf("ScanStruct(%s) returned %v, want %v", tt.title, value.Interface(), tt.value)
}
}
}
func TestBadScanStructArgs(t *testing.T) {
x := []interface{}{"A", "b"}
test := func(v interface{}) {
if err := redis.ScanStruct(x, v); err == nil {
t.Errorf("Expect error for ScanStruct(%T, %T)", x, v)
}
}
test(nil)
var v0 *struct{}
test(v0)
var v1 int
test(&v1)
x = x[:1]
v2 := struct{ A string }{}
test(&v2)
}
var scanSliceTests = []struct {
src []interface{}
fieldNames []string
ok bool
dest interface{}
}{
{
[]interface{}{[]byte("1"), nil, []byte("-1")},
nil,
true,
[]int{1, 0, -1},
},
{
[]interface{}{[]byte("1"), nil, []byte("2")},
nil,
true,
[]uint{1, 0, 2},
},
{
[]interface{}{[]byte("-1")},
nil,
false,
[]uint{1},
},
{
[]interface{}{[]byte("hello"), nil, []byte("world")},
nil,
true,
[][]byte{[]byte("hello"), nil, []byte("world")},
},
{
[]interface{}{[]byte("hello"), nil, []byte("world")},
nil,
true,
[]string{"hello", "", "world"},
},
{
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
nil,
true,
[]struct{ A, B string }{{"a1", "b1"}, {"a2", "b2"}},
},
{
[]interface{}{[]byte("a1"), []byte("b1")},
nil,
false,
[]struct{ A, B, C string }{{"a1", "b1", ""}},
},
{
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
nil,
true,
[]*struct{ A, B string }{{"a1", "b1"}, {"a2", "b2"}},
},
{
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
[]string{"A", "B"},
true,
[]struct{ A, C, B string }{{"a1", "", "b1"}, {"a2", "", "b2"}},
},
{
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
nil,
false,
[]struct{}{},
},
}
func TestScanSlice(t *testing.T) {
for _, tt := range scanSliceTests {
typ := reflect.ValueOf(tt.dest).Type()
dest := reflect.New(typ)
err := redis.ScanSlice(tt.src, dest.Interface(), tt.fieldNames...)
if tt.ok != (err == nil) {
t.Errorf("ScanSlice(%v, []%s, %v) returned error %v", tt.src, typ, tt.fieldNames, err)
continue
}
if tt.ok && !reflect.DeepEqual(dest.Elem().Interface(), tt.dest) {
t.Errorf("ScanSlice(src, []%s) returned %#v, want %#v", typ, dest.Elem().Interface(), tt.dest)
}
}
}
func ExampleScanSlice() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
c.Send("HMSET", "album:1", "title", "Red", "rating", 5)
c.Send("HMSET", "album:2", "title", "Earthbound", "rating", 1)
c.Send("HMSET", "album:3", "title", "Beat", "rating", 4)
c.Send("LPUSH", "albums", "1")
c.Send("LPUSH", "albums", "2")
c.Send("LPUSH", "albums", "3")
values, err := redis.Values(c.Do("SORT", "albums",
"BY", "album:*->rating",
"GET", "album:*->title",
"GET", "album:*->rating"))
if err != nil {
fmt.Println(err)
return
}
var albums []struct {
Title string
Rating int
}
if err := redis.ScanSlice(values, &albums); err != nil {
fmt.Println(err)
return
}
fmt.Printf("%v\n", albums)
// Output:
// [{Earthbound 1} {Beat 4} {Red 5}]
}
var argsTests = []struct {
title string
actual redis.Args
expected redis.Args
}{
{"struct ptr",
redis.Args{}.AddFlat(&struct {
I int `redis:"i"`
U uint `redis:"u"`
S string `redis:"s"`
P []byte `redis:"p"`
M map[string]string `redis:"m"`
Bt bool
Bf bool
}{
-1234, 5678, "hello", []byte("world"), map[string]string{"hello": "world"}, true, false,
}),
redis.Args{"i", int(-1234), "u", uint(5678), "s", "hello", "p", []byte("world"), "m", map[string]string{"hello": "world"}, "Bt", true, "Bf", false},
},
{"struct",
redis.Args{}.AddFlat(struct{ I int }{123}),
redis.Args{"I", 123},
},
{"slice",
redis.Args{}.Add(1).AddFlat([]string{"a", "b", "c"}).Add(2),
redis.Args{1, "a", "b", "c", 2},
},
{"struct omitempty",
redis.Args{}.AddFlat(&struct {
I int `redis:"i,omitempty"`
U uint `redis:"u,omitempty"`
S string `redis:"s,omitempty"`
P []byte `redis:"p,omitempty"`
M map[string]string `redis:"m,omitempty"`
Bt bool `redis:"Bt,omitempty"`
Bf bool `redis:"Bf,omitempty"`
}{
0, 0, "", []byte{}, map[string]string{}, true, false,
}),
redis.Args{"Bt", true},
},
}
func TestArgs(t *testing.T) {
for _, tt := range argsTests {
if !reflect.DeepEqual(tt.actual, tt.expected) {
t.Fatalf("%s is %v, want %v", tt.title, tt.actual, tt.expected)
}
}
}
func ExampleArgs() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
var p1, p2 struct {
Title string `redis:"title"`
Author string `redis:"author"`
Body string `redis:"body"`
}
p1.Title = "Example"
p1.Author = "Gary"
p1.Body = "Hello"
if _, err := c.Do("HMSET", redis.Args{}.Add("id1").AddFlat(&p1)...); err != nil {
fmt.Println(err)
return
}
m := map[string]string{
"title": "Example2",
"author": "Steve",
"body": "Map",
}
if _, err := c.Do("HMSET", redis.Args{}.Add("id2").AddFlat(m)...); err != nil {
fmt.Println(err)
return
}
for _, id := range []string{"id1", "id2"} {
v, err := redis.Values(c.Do("HGETALL", id))
if err != nil {
fmt.Println(err)
return
}
if err := redis.ScanStruct(v, &p2); err != nil {
fmt.Println(err)
return
}
fmt.Printf("%+v\n", p2)
}
// Output:
// {Title:Example Author:Gary Body:Hello}
// {Title:Example2 Author:Steve Body:Map}
}

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@@ -1,91 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"crypto/sha1"
"encoding/hex"
"io"
"strings"
)
// Script encapsulates the source, hash and key count for a Lua script. See
// http://redis.io/commands/eval for information on scripts in Redis.
type Script struct {
keyCount int
src string
hash string
}
// NewScript returns a new script object. If keyCount is greater than or equal
// to zero, then the count is automatically inserted in the EVAL command
// argument list. If keyCount is less than zero, then the application supplies
// the count as the first value in the keysAndArgs argument to the Do, Send and
// SendHash methods.
func NewScript(keyCount int, src string) *Script {
h := sha1.New()
io.WriteString(h, src)
return &Script{keyCount, src, hex.EncodeToString(h.Sum(nil))}
}
func (s *Script) args(spec string, keysAndArgs []interface{}) []interface{} {
var args []interface{}
if s.keyCount < 0 {
args = make([]interface{}, 1+len(keysAndArgs))
args[0] = spec
copy(args[1:], keysAndArgs)
} else {
args = make([]interface{}, 2+len(keysAndArgs))
args[0] = spec
args[1] = s.keyCount
copy(args[2:], keysAndArgs)
}
return args
}
// Hash returns the script hash.
func (s *Script) Hash() string {
return s.hash
}
// Do evaluates the script. Under the covers, Do optimistically evaluates the
// script using the EVALSHA command. If the command fails because the script is
// not loaded, then Do evaluates the script using the EVAL command (thus
// causing the script to load).
func (s *Script) Do(c Conn, keysAndArgs ...interface{}) (interface{}, error) {
v, err := c.Do("EVALSHA", s.args(s.hash, keysAndArgs)...)
if e, ok := err.(Error); ok && strings.HasPrefix(string(e), "NOSCRIPT ") {
v, err = c.Do("EVAL", s.args(s.src, keysAndArgs)...)
}
return v, err
}
// SendHash evaluates the script without waiting for the reply. The script is
// evaluated with the EVALSHA command. The application must ensure that the
// script is loaded by a previous call to Send, Do or Load methods.
func (s *Script) SendHash(c Conn, keysAndArgs ...interface{}) error {
return c.Send("EVALSHA", s.args(s.hash, keysAndArgs)...)
}
// Send evaluates the script without waiting for the reply.
func (s *Script) Send(c Conn, keysAndArgs ...interface{}) error {
return c.Send("EVAL", s.args(s.src, keysAndArgs)...)
}
// Load loads the script without evaluating it.
func (s *Script) Load(c Conn) error {
_, err := c.Do("SCRIPT", "LOAD", s.src)
return err
}

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@@ -1,100 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"fmt"
"reflect"
"testing"
"time"
"github.com/garyburd/redigo/redis"
)
var (
// These variables are declared at package level to remove distracting
// details from the examples.
c redis.Conn
reply interface{}
err error
)
func ExampleScript() {
// Initialize a package-level variable with a script.
var getScript = redis.NewScript(1, `return redis.call('get', KEYS[1])`)
// In a function, use the script Do method to evaluate the script. The Do
// method optimistically uses the EVALSHA command. If the script is not
// loaded, then the Do method falls back to the EVAL command.
reply, err = getScript.Do(c, "foo")
}
func TestScript(t *testing.T) {
c, err := redis.DialDefaultServer()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
defer c.Close()
// To test fall back in Do, we make script unique by adding comment with current time.
script := fmt.Sprintf("--%d\nreturn {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}", time.Now().UnixNano())
s := redis.NewScript(2, script)
reply := []interface{}{[]byte("key1"), []byte("key2"), []byte("arg1"), []byte("arg2")}
v, err := s.Do(c, "key1", "key2", "arg1", "arg2")
if err != nil {
t.Errorf("s.Do(c, ...) returned %v", err)
}
if !reflect.DeepEqual(v, reply) {
t.Errorf("s.Do(c, ..); = %v, want %v", v, reply)
}
err = s.Load(c)
if err != nil {
t.Errorf("s.Load(c) returned %v", err)
}
err = s.SendHash(c, "key1", "key2", "arg1", "arg2")
if err != nil {
t.Errorf("s.SendHash(c, ...) returned %v", err)
}
err = c.Flush()
if err != nil {
t.Errorf("c.Flush() returned %v", err)
}
v, err = c.Receive()
if !reflect.DeepEqual(v, reply) {
t.Errorf("s.SendHash(c, ..); c.Receive() = %v, want %v", v, reply)
}
err = s.Send(c, "key1", "key2", "arg1", "arg2")
if err != nil {
t.Errorf("s.Send(c, ...) returned %v", err)
}
err = c.Flush()
if err != nil {
t.Errorf("c.Flush() returned %v", err)
}
v, err = c.Receive()
if !reflect.DeepEqual(v, reply) {
t.Errorf("s.Send(c, ..); c.Receive() = %v, want %v", v, reply)
}
}

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@@ -1,183 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis
import (
"bufio"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"strconv"
"strings"
"sync"
"testing"
"time"
)
func SetNowFunc(f func() time.Time) {
nowFunc = f
}
var (
ErrNegativeInt = errNegativeInt
serverPath = flag.String("redis-server", "redis-server", "Path to redis server binary")
serverAddress = flag.String("redis-address", "127.0.0.1", "The address of the server")
serverBasePort = flag.Int("redis-port", 16379, "Beginning of port range for test servers")
serverLogName = flag.String("redis-log", "", "Write Redis server logs to `filename`")
serverLog = ioutil.Discard
defaultServerMu sync.Mutex
defaultServer *Server
defaultServerErr error
)
type Server struct {
name string
cmd *exec.Cmd
done chan struct{}
}
func NewServer(name string, args ...string) (*Server, error) {
s := &Server{
name: name,
cmd: exec.Command(*serverPath, args...),
done: make(chan struct{}),
}
r, err := s.cmd.StdoutPipe()
if err != nil {
return nil, err
}
err = s.cmd.Start()
if err != nil {
return nil, err
}
ready := make(chan error, 1)
go s.watch(r, ready)
select {
case err = <-ready:
case <-time.After(time.Second * 10):
err = errors.New("timeout waiting for server to start")
}
if err != nil {
s.Stop()
return nil, err
}
return s, nil
}
func (s *Server) watch(r io.Reader, ready chan error) {
fmt.Fprintf(serverLog, "%d START %s \n", s.cmd.Process.Pid, s.name)
var listening bool
var text string
scn := bufio.NewScanner(r)
for scn.Scan() {
text = scn.Text()
fmt.Fprintf(serverLog, "%s\n", text)
if !listening {
if strings.Contains(text, " * Ready to accept connections") ||
strings.Contains(text, " * The server is now ready to accept connections on port") {
listening = true
ready <- nil
}
}
}
if !listening {
ready <- fmt.Errorf("server exited: %s", text)
}
s.cmd.Wait()
fmt.Fprintf(serverLog, "%d STOP %s \n", s.cmd.Process.Pid, s.name)
close(s.done)
}
func (s *Server) Stop() {
s.cmd.Process.Signal(os.Interrupt)
<-s.done
}
// stopDefaultServer stops the server created by DialDefaultServer.
func stopDefaultServer() {
defaultServerMu.Lock()
defer defaultServerMu.Unlock()
if defaultServer != nil {
defaultServer.Stop()
defaultServer = nil
}
}
// DefaultServerAddr starts the test server if not already started and returns
// the address of that server.
func DefaultServerAddr() (string, error) {
defaultServerMu.Lock()
defer defaultServerMu.Unlock()
addr := fmt.Sprintf("%v:%d", *serverAddress, *serverBasePort)
if defaultServer != nil || defaultServerErr != nil {
return addr, defaultServerErr
}
defaultServer, defaultServerErr = NewServer(
"default",
"--port", strconv.Itoa(*serverBasePort),
"--bind", *serverAddress,
"--save", "",
"--appendonly", "no")
return addr, defaultServerErr
}
// DialDefaultServer starts the test server if not already started and dials a
// connection to the server.
func DialDefaultServer() (Conn, error) {
addr, err := DefaultServerAddr()
if err != nil {
return nil, err
}
c, err := Dial("tcp", addr, DialReadTimeout(1*time.Second), DialWriteTimeout(1*time.Second))
if err != nil {
return nil, err
}
c.Do("FLUSHDB")
return c, nil
}
func TestMain(m *testing.M) {
os.Exit(func() int {
flag.Parse()
var f *os.File
if *serverLogName != "" {
var err error
f, err = os.OpenFile(*serverLogName, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0600)
if err != nil {
fmt.Fprintf(os.Stderr, "Error opening redis-log: %v\n", err)
return 1
}
defer f.Close()
serverLog = f
}
defer stopDefaultServer()
return m.Run()
}())
}

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@@ -1,114 +0,0 @@
// Copyright 2013 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redis_test
import (
"fmt"
"github.com/garyburd/redigo/redis"
)
// zpop pops a value from the ZSET key using WATCH/MULTI/EXEC commands.
func zpop(c redis.Conn, key string) (result string, err error) {
defer func() {
// Return connection to normal state on error.
if err != nil {
c.Do("DISCARD")
}
}()
// Loop until transaction is successful.
for {
if _, err := c.Do("WATCH", key); err != nil {
return "", err
}
members, err := redis.Strings(c.Do("ZRANGE", key, 0, 0))
if err != nil {
return "", err
}
if len(members) != 1 {
return "", redis.ErrNil
}
c.Send("MULTI")
c.Send("ZREM", key, members[0])
queued, err := c.Do("EXEC")
if err != nil {
return "", err
}
if queued != nil {
result = members[0]
break
}
}
return result, nil
}
// zpopScript pops a value from a ZSET.
var zpopScript = redis.NewScript(1, `
local r = redis.call('ZRANGE', KEYS[1], 0, 0)
if r ~= nil then
r = r[1]
redis.call('ZREM', KEYS[1], r)
end
return r
`)
// This example implements ZPOP as described at
// http://redis.io/topics/transactions using WATCH/MULTI/EXEC and scripting.
func Example_zpop() {
c, err := dial()
if err != nil {
fmt.Println(err)
return
}
defer c.Close()
// Add test data using a pipeline.
for i, member := range []string{"red", "blue", "green"} {
c.Send("ZADD", "zset", i, member)
}
if _, err := c.Do(""); err != nil {
fmt.Println(err)
return
}
// Pop using WATCH/MULTI/EXEC
v, err := zpop(c, "zset")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(v)
// Pop using a script.
v, err = redis.String(zpopScript.Do(c, "zset"))
if err != nil {
fmt.Println(err)
return
}
fmt.Println(v)
// Output:
// red
// blue
}

View File

@@ -1,152 +0,0 @@
// Copyright 2014 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redisx
import (
"errors"
"sync"
"github.com/garyburd/redigo/internal"
"github.com/garyburd/redigo/redis"
)
// ConnMux multiplexes one or more connections to a single underlying
// connection. The ConnMux connections do not support concurrency, commands
// that associate server side state with the connection or commands that put
// the connection in a special mode.
type ConnMux struct {
c redis.Conn
sendMu sync.Mutex
sendID uint
recvMu sync.Mutex
recvID uint
recvWait map[uint]chan struct{}
}
func NewConnMux(c redis.Conn) *ConnMux {
return &ConnMux{c: c, recvWait: make(map[uint]chan struct{})}
}
// Get gets a connection. The application must close the returned connection.
func (p *ConnMux) Get() redis.Conn {
c := &muxConn{p: p}
c.ids = c.buf[:0]
return c
}
// Close closes the underlying connection.
func (p *ConnMux) Close() error {
return p.c.Close()
}
type muxConn struct {
p *ConnMux
ids []uint
buf [8]uint
}
func (c *muxConn) send(flush bool, cmd string, args ...interface{}) error {
if internal.LookupCommandInfo(cmd).Set != 0 {
return errors.New("command not supported by mux pool")
}
p := c.p
p.sendMu.Lock()
id := p.sendID
c.ids = append(c.ids, id)
p.sendID++
err := p.c.Send(cmd, args...)
if flush {
err = p.c.Flush()
}
p.sendMu.Unlock()
return err
}
func (c *muxConn) Send(cmd string, args ...interface{}) error {
return c.send(false, cmd, args...)
}
func (c *muxConn) Flush() error {
p := c.p
p.sendMu.Lock()
err := p.c.Flush()
p.sendMu.Unlock()
return err
}
func (c *muxConn) Receive() (interface{}, error) {
if len(c.ids) == 0 {
return nil, errors.New("mux pool underflow")
}
id := c.ids[0]
c.ids = c.ids[1:]
if len(c.ids) == 0 {
c.ids = c.buf[:0]
}
p := c.p
p.recvMu.Lock()
if p.recvID != id {
ch := make(chan struct{})
p.recvWait[id] = ch
p.recvMu.Unlock()
<-ch
p.recvMu.Lock()
if p.recvID != id {
panic("out of sync")
}
}
v, err := p.c.Receive()
id++
p.recvID = id
ch, ok := p.recvWait[id]
if ok {
delete(p.recvWait, id)
}
p.recvMu.Unlock()
if ok {
ch <- struct{}{}
}
return v, err
}
func (c *muxConn) Close() error {
var err error
if len(c.ids) == 0 {
return nil
}
c.Flush()
for _ = range c.ids {
_, err = c.Receive()
}
return err
}
func (c *muxConn) Do(cmd string, args ...interface{}) (interface{}, error) {
if err := c.send(true, cmd, args...); err != nil {
return nil, err
}
return c.Receive()
}
func (c *muxConn) Err() error {
return c.p.c.Err()
}

View File

@@ -1,259 +0,0 @@
// Copyright 2014 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package redisx_test
import (
"net/textproto"
"sync"
"testing"
"github.com/garyburd/redigo/internal/redistest"
"github.com/garyburd/redigo/redis"
"github.com/garyburd/redigo/redisx"
)
func TestConnMux(t *testing.T) {
c, err := redistest.Dial()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
m := redisx.NewConnMux(c)
defer m.Close()
c1 := m.Get()
c2 := m.Get()
c1.Send("ECHO", "hello")
c2.Send("ECHO", "world")
c1.Flush()
c2.Flush()
s, err := redis.String(c1.Receive())
if err != nil {
t.Fatal(err)
}
if s != "hello" {
t.Fatalf("echo returned %q, want %q", s, "hello")
}
s, err = redis.String(c2.Receive())
if err != nil {
t.Fatal(err)
}
if s != "world" {
t.Fatalf("echo returned %q, want %q", s, "world")
}
c1.Close()
c2.Close()
}
func TestConnMuxClose(t *testing.T) {
c, err := redistest.Dial()
if err != nil {
t.Fatalf("error connection to database, %v", err)
}
m := redisx.NewConnMux(c)
defer m.Close()
c1 := m.Get()
c2 := m.Get()
if err := c1.Send("ECHO", "hello"); err != nil {
t.Fatal(err)
}
if err := c1.Close(); err != nil {
t.Fatal(err)
}
if err := c2.Send("ECHO", "world"); err != nil {
t.Fatal(err)
}
if err := c2.Flush(); err != nil {
t.Fatal(err)
}
s, err := redis.String(c2.Receive())
if err != nil {
t.Fatal(err)
}
if s != "world" {
t.Fatalf("echo returned %q, want %q", s, "world")
}
c2.Close()
}
func BenchmarkConn(b *testing.B) {
b.StopTimer()
c, err := redistest.Dial()
if err != nil {
b.Fatalf("error connection to database, %v", err)
}
defer c.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
}
}
func BenchmarkConnMux(b *testing.B) {
b.StopTimer()
c, err := redistest.Dial()
if err != nil {
b.Fatalf("error connection to database, %v", err)
}
m := redisx.NewConnMux(c)
defer m.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
c := m.Get()
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
c.Close()
}
}
func BenchmarkPool(b *testing.B) {
b.StopTimer()
p := redis.Pool{Dial: redistest.Dial, MaxIdle: 1}
defer p.Close()
// Fill the pool.
c := p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
c.Close()
b.StartTimer()
for i := 0; i < b.N; i++ {
c := p.Get()
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
c.Close()
}
}
const numConcurrent = 10
func BenchmarkConnMuxConcurrent(b *testing.B) {
b.StopTimer()
c, err := redistest.Dial()
if err != nil {
b.Fatalf("error connection to database, %v", err)
}
defer c.Close()
m := redisx.NewConnMux(c)
var wg sync.WaitGroup
wg.Add(numConcurrent)
b.StartTimer()
for i := 0; i < numConcurrent; i++ {
go func() {
defer wg.Done()
for i := 0; i < b.N; i++ {
c := m.Get()
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
c.Close()
}
}()
}
wg.Wait()
}
func BenchmarkPoolConcurrent(b *testing.B) {
b.StopTimer()
p := redis.Pool{Dial: redistest.Dial, MaxIdle: numConcurrent}
defer p.Close()
// Fill the pool.
conns := make([]redis.Conn, numConcurrent)
for i := range conns {
c := p.Get()
if err := c.Err(); err != nil {
b.Fatal(err)
}
conns[i] = c
}
for _, c := range conns {
c.Close()
}
var wg sync.WaitGroup
wg.Add(numConcurrent)
b.StartTimer()
for i := 0; i < numConcurrent; i++ {
go func() {
defer wg.Done()
for i := 0; i < b.N; i++ {
c := p.Get()
if _, err := c.Do("PING"); err != nil {
b.Fatal(err)
}
c.Close()
}
}()
}
wg.Wait()
}
func BenchmarkPipelineConcurrency(b *testing.B) {
b.StopTimer()
c, err := redistest.Dial()
if err != nil {
b.Fatalf("error connection to database, %v", err)
}
defer c.Close()
var wg sync.WaitGroup
wg.Add(numConcurrent)
var pipeline textproto.Pipeline
b.StartTimer()
for i := 0; i < numConcurrent; i++ {
go func() {
defer wg.Done()
for i := 0; i < b.N; i++ {
id := pipeline.Next()
pipeline.StartRequest(id)
c.Send("PING")
c.Flush()
pipeline.EndRequest(id)
pipeline.StartResponse(id)
_, err := c.Receive()
if err != nil {
b.Fatal(err)
}
pipeline.EndResponse(id)
}
}()
}
wg.Wait()
}

View File

@@ -1,17 +0,0 @@
// Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package redisx contains experimental features for Redigo. Features in this
// package may be modified or deleted at any time.
package redisx // import "github.com/garyburd/redigo/redisx"

View File

@@ -1,42 +0,0 @@
# unifying the coding style for different editors and IDEs => editorconfig.org
; indicate this is the root of the project
root = true
###########################################################
; common
###########################################################
[*]
charset = utf-8
end_of_line = LF
insert_final_newline = true
trim_trailing_whitespace = true
indent_style = space
indent_size = 2
###########################################################
; make
###########################################################
[Makefile]
indent_style = tab
[makefile]
indent_style = tab
###########################################################
; markdown
###########################################################
[*.md]
trim_trailing_whitespace = false
###########################################################
; golang
###########################################################
[*.go]
indent_style = tab

View File

@@ -1,27 +0,0 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
vendor/*
!vendor/vendor.json

View File

@@ -1,27 +0,0 @@
language: go
sudo: false
go:
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
- master
git:
depth: 3
install:
- go get -v github.com/kardianos/govendor
- govendor sync
- go get -u github.com/campoy/embedmd
script:
- embedmd -d README.md
notifications:
webhooks:
urls:
- https://webhooks.gitter.im/e/7f95bf605c4d356372f4
on_success: change # options: [always|never|change] default: always
on_failure: always # options: [always|never|change] default: always
on_start: false # default: false

View File

@@ -1,21 +0,0 @@
MIT License
Copyright (c) 2017 Gin-Gonic
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

View File

@@ -1,67 +0,0 @@
# autotls
[![Build Status](https://travis-ci.org/gin-gonic/autotls.svg?branch=master)](https://travis-ci.org/gin-gonic/autotls)
[![Go Report Card](https://goreportcard.com/badge/github.com/gin-gonic/autotls)](https://goreportcard.com/report/github.com/gin-gonic/autotls)
[![GoDoc](https://godoc.org/github.com/gin-gonic/autotls?status.svg)](https://godoc.org/github.com/gin-gonic/autotls)
[![Join the chat at https://gitter.im/gin-gonic/autotls](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/gin-gonic/autotls?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
Support Let's Encrypt for a Go server application.
## example
example for 1-line LetsEncrypt HTTPS servers.
[embedmd]:# (example/example1.go go)
```go
package main
import (
"log"
"github.com/gin-gonic/autotls"
"github.com/gin-gonic/gin"
)
func main() {
r := gin.Default()
// Ping handler
r.GET("/ping", func(c *gin.Context) {
c.String(200, "pong")
})
log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
}
```
example for custom autocert manager.
[embedmd]:# (example/example2.go go)
```go
package main
import (
"log"
"github.com/gin-gonic/autotls"
"github.com/gin-gonic/gin"
"golang.org/x/crypto/acme/autocert"
)
func main() {
r := gin.Default()
// Ping handler
r.GET("/ping", func(c *gin.Context) {
c.String(200, "pong")
})
m := autocert.Manager{
Prompt: autocert.AcceptTOS,
HostPolicy: autocert.HostWhitelist("example1.com", "example2.com"),
Cache: autocert.DirCache("/var/www/.cache"),
}
log.Fatal(autotls.RunWithManager(r, &m))
}
```

View File

@@ -1,24 +0,0 @@
package autotls
import (
"crypto/tls"
"net/http"
"golang.org/x/crypto/acme/autocert"
)
// Run support 1-line LetsEncrypt HTTPS servers
func Run(r http.Handler, domain ...string) error {
return http.Serve(autocert.NewListener(domain...), r)
}
// RunWithManager support custom autocert manager
func RunWithManager(r http.Handler, m *autocert.Manager) error {
s := &http.Server{
Addr: ":https",
TLSConfig: &tls.Config{GetCertificate: m.GetCertificate},
Handler: r,
}
return s.ListenAndServeTLS("", "")
}

View File

@@ -1,23 +0,0 @@
// Package autotls support Let's Encrypt for a Go server application.
//
// package main
//
// import (
// "log"
//
// "github.com/gin-gonic/autotls"
// "github.com/gin-gonic/gin"
// )
//
// func main() {
// r := gin.Default()
//
// // Ping handler
// r.GET("/ping", func(c *gin.Context) {
// c.String(200, "pong")
// })
//
// log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
// }
//
package autotls

View File

@@ -1,19 +0,0 @@
package main
import (
"log"
"github.com/gin-gonic/autotls"
"github.com/gin-gonic/gin"
)
func main() {
r := gin.Default()
// Ping handler
r.GET("/ping", func(c *gin.Context) {
c.String(200, "pong")
})
log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
}

View File

@@ -1,26 +0,0 @@
package main
import (
"log"
"github.com/gin-gonic/autotls"
"github.com/gin-gonic/gin"
"golang.org/x/crypto/acme/autocert"
)
func main() {
r := gin.Default()
// Ping handler
r.GET("/ping", func(c *gin.Context) {
c.String(200, "pong")
})
m := autocert.Manager{
Prompt: autocert.AcceptTOS,
HostPolicy: autocert.HostWhitelist("example1.com", "example2.com"),
Cache: autocert.DirCache("/var/www/.cache"),
}
log.Fatal(autotls.RunWithManager(r, &m))
}

View File

@@ -1,19 +0,0 @@
{
"comment": "",
"ignore": "test",
"package": [
{
"checksumSHA1": "QNHLX/9+KNzu0oCCdqUSEX4kyiY=",
"path": "golang.org/x/crypto/acme",
"revision": "cbc3d0884eac986df6e78a039b8792e869bff863",
"revisionTime": "2017-04-09T18:29:52Z"
},
{
"checksumSHA1": "TrKJW+flz7JulXU3sqnBJjGzgQc=",
"path": "golang.org/x/crypto/acme/autocert",
"revision": "5ef0053f77724838734b6945dd364d3847e5de1d",
"revisionTime": "2017-06-29T04:06:47Z"
}
],
"rootPath": "github.com/gin-gonic/autotls"
}

View File

@@ -1,2 +0,0 @@
*/Godeps/*
!*/Godeps/Godeps.json

View File

@@ -1,18 +0,0 @@
language: go
go:
- 1.6.x
- 1.7.x
- 1.8.x
- tip
services:
- memcache
- redis-server
notifications:
webhooks:
urls:
- https://webhooks.gitter.im/e/acc2c57482e94b44f557
on_success: change
on_failure: always
on_start: false

View File

@@ -1,38 +0,0 @@
# gin-gonic/contrib
[![Build Status](https://travis-ci.org/gin-gonic/contrib.svg)](https://travis-ci.org/gin-gonic/contrib)
Here you'll find middleware ready to use with [Gin Framework](https://github.com/gin-gonic/gin). Submit your pull request, either with the package in a folder, or by adding a link to this `README.md`.
If adding a package directly, don't forget to create a `README.md` inside with author name.
If adding a link to your own repository, please follow this example:
```
+ nameOfMiddleware (https://github.com/yourusername/yourrepo)
```
Each author is responsible of maintaining his own code, although if you submit as a package, you allow the community to fix it. You can also submit a pull request to fix an existing package.
## List of external middleware
+ [RestGate](https://github.com/pjebs/restgate) - Secure authentication for REST API endpoints
+ [staticbin](https://github.com/olebedev/staticbin) - middleware/handler for serving static files from binary data
+ [gin-cors](https://github.com/gin-contrib/cors) - Official CORS gin's middleware
+ [gin-csrf](https://github.com/utrack/gin-csrf) - CSRF protection
+ [gin-health](https://github.com/utrack/gin-health) - middleware that simplifies stat reporting via [gocraft/health](https://github.com/gocraft/health)
+ [gin-merry](https://github.com/utrack/gin-merry) - middleware for pretty-printing [merry](https://github.com/ansel1/merry) errors with context
+ [gin-revision](https://github.com/appleboy/gin-revision-middleware) - Revision middleware for Gin framework
+ [gin-jwt](https://github.com/appleboy/gin-jwt) - JWT Middleware for Gin Framework
+ [gin-sessions](https://github.com/kimiazhu/ginweb-contrib/tree/master/sessions) - session middleware based on mongodb and mysql
+ [gin-location](https://github.com/drone/gin-location) - middleware for exposing the server's hostname and scheme
+ [gin-nice-recovery](https://github.com/ekyoung/gin-nice-recovery) - panic recovery middleware that let's you build a nicer user experience
+ [gin-limit](https://github.com/aviddiviner/gin-limit) - limits simultaneous requests; can help with high traffic load
+ [ez-gin-template](https://github.com/michelloworld/ez-gin-template) - easy template wrap for gin
+ [gin-hydra](https://github.com/janekolszak/gin-hydra) - [Hydra](https://github.com/ory-am/hydra) middleware for Gin
+ [gin-glog](https://github.com/zalando/gin-glog) - meant as drop-in replacement for Gin's default logger
+ [gin-gomonitor](https://github.com/zalando/gin-gomonitor) - for exposing metrics with Go-Monitor
+ [gin-oauth2](https://github.com/zalando/gin-oauth2) - for working with OAuth2
+ [static](https://github.com/hyperboloide/static) An alternative static assets handler for the gin framework.
+ [xss-mw](https://github.com/dvwright/xss-mw) - XssMw is a middleware designed to "auto remove XSS" from user submitted input
+ [gin-helmet](https://github.com/danielkov/gin-helmet) - Collection of simple security middleware.
+ [gin-jwt-session](https://github.com/ScottHuangZL/gin-jwt-session) - middleware to provide JWT/Session/Flashes, easy to use while also provide options for adjust if necessary. Provide sample too.

View File

@@ -1,22 +0,0 @@
{
"ImportPath": "github.com/gin-gonic/contrib/cache",
"GoVersion": "go1.3",
"Deps": [
{
"ImportPath": "github.com/bradfitz/gomemcache/memcache",
"Rev": "72a68649ba712ee7c4b5b4a943a626bcd7d90eb8"
},
{
"ImportPath": "github.com/garyburd/redigo/redis",
"Rev": "535138d7bcd717d6531c701ef5933d98b1866257"
},
{
"ImportPath": "github.com/gin-gonic/gin",
"Rev": "ac0ad2fed865d40a0adc1ac3ccaadc3acff5db4b"
},
{
"ImportPath": "github.com/robfig/go-cache",
"Rev": "9fc39e0dbf62c034ec4e45e6120fc69433a3ec51"
}
]
}

View File

@@ -1,5 +0,0 @@
# cache
## EOL-warning
**This package has been abandoned on 2016-12-07. Please use [gin-contrib/cache](https://github.com/gin-contrib/cache) instead.**

View File

@@ -1,153 +0,0 @@
package cache
import (
"bytes"
"crypto/sha1"
"errors"
"github.com/gin-gonic/gin"
"io"
"net/http"
"net/url"
"time"
)
const (
DEFAULT = time.Duration(0)
FOREVER = time.Duration(-1)
CACHE_MIDDLEWARE_KEY = "gincontrib.cache"
)
var (
PageCachePrefix = "gincontrib.page.cache"
ErrCacheMiss = errors.New("cache: key not found.")
ErrNotStored = errors.New("cache: not stored.")
ErrNotSupport = errors.New("cache: not support.")
)
type CacheStore interface {
Get(key string, value interface{}) error
Set(key string, value interface{}, expire time.Duration) error
Add(key string, value interface{}, expire time.Duration) error
Replace(key string, data interface{}, expire time.Duration) error
Delete(key string) error
Increment(key string, data uint64) (uint64, error)
Decrement(key string, data uint64) (uint64, error)
Flush() error
}
type responseCache struct {
status int
header http.Header
data []byte
}
type cachedWriter struct {
gin.ResponseWriter
status int
written bool
store CacheStore
expire time.Duration
key string
}
func urlEscape(prefix string, u string) string {
key := url.QueryEscape(u)
if len(key) > 200 {
h := sha1.New()
io.WriteString(h, u)
key = string(h.Sum(nil))
}
var buffer bytes.Buffer
buffer.WriteString(prefix)
buffer.WriteString(":")
buffer.WriteString(key)
return buffer.String()
}
func newCachedWriter(store CacheStore, expire time.Duration, writer gin.ResponseWriter, key string) *cachedWriter {
return &cachedWriter{writer, 0, false, store, expire, key}
}
func (w *cachedWriter) WriteHeader(code int) {
w.status = code
w.written = true
w.ResponseWriter.WriteHeader(code)
}
func (w *cachedWriter) Status() int {
return w.status
}
func (w *cachedWriter) Written() bool {
return w.written
}
func (w *cachedWriter) Write(data []byte) (int, error) {
ret, err := w.ResponseWriter.Write(data)
if err == nil {
//cache response
store := w.store
val := responseCache{
w.status,
w.Header(),
data,
}
err = store.Set(w.key, val, w.expire)
if err != nil {
// need logger
}
}
return ret, err
}
// Cache Middleware
func Cache(store *CacheStore) gin.HandlerFunc {
return func(c *gin.Context) {
c.Set(CACHE_MIDDLEWARE_KEY, store)
c.Next()
}
}
func SiteCache(store CacheStore, expire time.Duration) gin.HandlerFunc {
return func(c *gin.Context) {
var cache responseCache
url := c.Request.URL
key := urlEscape(PageCachePrefix, url.RequestURI())
if err := store.Get(key, &cache); err != nil {
c.Next()
} else {
c.Writer.WriteHeader(cache.status)
for k, vals := range cache.header {
for _, v := range vals {
c.Writer.Header().Add(k, v)
}
}
c.Writer.Write(cache.data)
}
}
}
// Cache Decorator
func CachePage(store CacheStore, expire time.Duration, handle gin.HandlerFunc) gin.HandlerFunc {
return func(c *gin.Context) {
var cache responseCache
url := c.Request.URL
key := urlEscape(PageCachePrefix, url.RequestURI())
if err := store.Get(key, &cache); err != nil {
// replace writer
writer := newCachedWriter(store, expire, c.Writer, key)
c.Writer = writer
handle(c)
} else {
c.Writer.WriteHeader(cache.status)
for k, vals := range cache.header {
for _, v := range vals {
c.Writer.Header().Add(k, v)
}
}
c.Writer.Write(cache.data)
}
}
}

View File

@@ -1,202 +0,0 @@
package cache
import (
"math"
"testing"
"time"
)
type cacheFactory func(*testing.T, time.Duration) CacheStore
// Test typical cache interactions
func typicalGetSet(t *testing.T, newCache cacheFactory) {
var err error
cache := newCache(t, time.Hour)
value := "foo"
if err = cache.Set("value", value, DEFAULT); err != nil {
t.Errorf("Error setting a value: %s", err)
}
value = ""
err = cache.Get("value", &value)
if err != nil {
t.Errorf("Error getting a value: %s", err)
}
if value != "foo" {
t.Errorf("Expected to get foo back, got %s", value)
}
}
// Test the increment-decrement cases
func incrDecr(t *testing.T, newCache cacheFactory) {
var err error
cache := newCache(t, time.Hour)
// Normal increment / decrement operation.
if err = cache.Set("int", 10, DEFAULT); err != nil {
t.Errorf("Error setting int: %s", err)
}
newValue, err := cache.Increment("int", 50)
if err != nil {
t.Errorf("Error incrementing int: %s", err)
}
if newValue != 60 {
t.Errorf("Expected 60, was %d", newValue)
}
if newValue, err = cache.Decrement("int", 50); err != nil {
t.Errorf("Error decrementing: %s", err)
}
if newValue != 10 {
t.Errorf("Expected 10, was %d", newValue)
}
// Increment wraparound
newValue, err = cache.Increment("int", math.MaxUint64-5)
if err != nil {
t.Errorf("Error wrapping around: %s", err)
}
if newValue != 4 {
t.Errorf("Expected wraparound 4, got %d", newValue)
}
// Decrement capped at 0
newValue, err = cache.Decrement("int", 25)
if err != nil {
t.Errorf("Error decrementing below 0: %s", err)
}
if newValue != 0 {
t.Errorf("Expected capped at 0, got %d", newValue)
}
}
func expiration(t *testing.T, newCache cacheFactory) {
// memcached does not support expiration times less than 1 second.
var err error
cache := newCache(t, time.Second)
// Test Set w/ DEFAULT
value := 10
cache.Set("int", value, DEFAULT)
time.Sleep(2 * time.Second)
err = cache.Get("int", &value)
if err != ErrCacheMiss {
t.Errorf("Expected CacheMiss, but got: %s", err)
}
// Test Set w/ short time
cache.Set("int", value, time.Second)
time.Sleep(2 * time.Second)
err = cache.Get("int", &value)
if err != ErrCacheMiss {
t.Errorf("Expected CacheMiss, but got: %s", err)
}
// Test Set w/ longer time.
cache.Set("int", value, time.Hour)
time.Sleep(2 * time.Second)
err = cache.Get("int", &value)
if err != nil {
t.Errorf("Expected to get the value, but got: %s", err)
}
// Test Set w/ forever.
cache.Set("int", value, FOREVER)
time.Sleep(2 * time.Second)
err = cache.Get("int", &value)
if err != nil {
t.Errorf("Expected to get the value, but got: %s", err)
}
}
func emptyCache(t *testing.T, newCache cacheFactory) {
var err error
cache := newCache(t, time.Hour)
err = cache.Get("notexist", 0)
if err == nil {
t.Errorf("Error expected for non-existent key")
}
if err != ErrCacheMiss {
t.Errorf("Expected ErrCacheMiss for non-existent key: %s", err)
}
err = cache.Delete("notexist")
if err != ErrCacheMiss {
t.Errorf("Expected ErrCacheMiss for non-existent key: %s", err)
}
_, err = cache.Increment("notexist", 1)
if err != ErrCacheMiss {
t.Errorf("Expected cache miss incrementing non-existent key: %s", err)
}
_, err = cache.Decrement("notexist", 1)
if err != ErrCacheMiss {
t.Errorf("Expected cache miss decrementing non-existent key: %s", err)
}
}
func testReplace(t *testing.T, newCache cacheFactory) {
var err error
cache := newCache(t, time.Hour)
// Replace in an empty cache.
if err = cache.Replace("notexist", 1, FOREVER); err != ErrNotStored {
t.Errorf("Replace in empty cache: expected ErrNotStored, got: %s", err)
}
// Set a value of 1, and replace it with 2
if err = cache.Set("int", 1, time.Second); err != nil {
t.Errorf("Unexpected error: %s", err)
}
if err = cache.Replace("int", 2, time.Second); err != nil {
t.Errorf("Unexpected error: %s", err)
}
var i int
if err = cache.Get("int", &i); err != nil {
t.Errorf("Unexpected error getting a replaced item: %s", err)
}
if i != 2 {
t.Errorf("Expected 2, got %d", i)
}
// Wait for it to expire and replace with 3 (unsuccessfully).
time.Sleep(2 * time.Second)
if err = cache.Replace("int", 3, time.Second); err != ErrNotStored {
t.Errorf("Expected ErrNotStored, got: %s", err)
}
if err = cache.Get("int", &i); err != ErrCacheMiss {
t.Errorf("Expected cache miss, got: %s", err)
}
}
func testAdd(t *testing.T, newCache cacheFactory) {
var err error
cache := newCache(t, time.Hour)
// Add to an empty cache.
if err = cache.Add("int", 1, time.Second); err != nil {
t.Errorf("Unexpected error adding to empty cache: %s", err)
}
// Try to add again. (fail)
if err = cache.Add("int", 2, time.Second); err != ErrNotStored {
t.Errorf("Expected ErrNotStored adding dupe to cache: %s", err)
}
// Wait for it to expire, and add again.
time.Sleep(2 * time.Second)
if err = cache.Add("int", 3, time.Second); err != nil {
t.Errorf("Unexpected error adding to cache: %s", err)
}
// Get and verify the value.
var i int
if err = cache.Get("int", &i); err != nil {
t.Errorf("Unexpected error: %s", err)
}
if i != 3 {
t.Errorf("Expected 3, got: %d", i)
}
}

View File

@@ -1,25 +0,0 @@
package main
import (
"fmt"
"github.com/gin-gonic/contrib/cache"
"github.com/gin-gonic/gin"
"time"
)
func main() {
r := gin.Default()
store := cache.NewInMemoryStore(time.Second)
// Cached Page
r.GET("/ping", func(c *gin.Context) {
c.String(200, "pong "+fmt.Sprint(time.Now().Unix()))
})
r.GET("/cache_ping", cache.CachePage(store, time.Minute, func(c *gin.Context) {
c.String(200, "pong "+fmt.Sprint(time.Now().Unix()))
}))
// Listen and Server in 0.0.0.0:8080
r.Run(":8080")
}

View File

@@ -1,78 +0,0 @@
package cache
import (
"github.com/robfig/go-cache"
"reflect"
"time"
)
type InMemoryStore struct {
cache.Cache
}
func NewInMemoryStore(defaultExpiration time.Duration) *InMemoryStore {
return &InMemoryStore{*cache.New(defaultExpiration, time.Minute)}
}
func (c *InMemoryStore) Get(key string, value interface{}) error {
val, found := c.Cache.Get(key)
if !found {
return ErrCacheMiss
}
v := reflect.ValueOf(value)
if v.Type().Kind() == reflect.Ptr && v.Elem().CanSet() {
v.Elem().Set(reflect.ValueOf(val))
return nil
}
return ErrNotStored
}
func (c *InMemoryStore) Set(key string, value interface{}, expires time.Duration) error {
// NOTE: go-cache understands the values of DEFAULT and FOREVER
c.Cache.Set(key, value, expires)
return nil
}
func (c *InMemoryStore) Add(key string, value interface{}, expires time.Duration) error {
err := c.Cache.Add(key, value, expires)
if err == cache.ErrKeyExists {
return ErrNotStored
}
return err
}
func (c *InMemoryStore) Replace(key string, value interface{}, expires time.Duration) error {
if err := c.Cache.Replace(key, value, expires); err != nil {
return ErrNotStored
}
return nil
}
func (c *InMemoryStore) Delete(key string) error {
if found := c.Cache.Delete(key); !found {
return ErrCacheMiss
}
return nil
}
func (c *InMemoryStore) Increment(key string, n uint64) (uint64, error) {
newValue, err := c.Cache.Increment(key, n)
if err == cache.ErrCacheMiss {
return 0, ErrCacheMiss
}
return newValue, err
}
func (c *InMemoryStore) Decrement(key string, n uint64) (uint64, error) {
newValue, err := c.Cache.Decrement(key, n)
if err == cache.ErrCacheMiss {
return 0, ErrCacheMiss
}
return newValue, err
}
func (c *InMemoryStore) Flush() error {
c.Cache.Flush()
return nil
}

View File

@@ -1,35 +0,0 @@
package cache
import (
"testing"
"time"
)
var newInMemoryStore = func(_ *testing.T, defaultExpiration time.Duration) CacheStore {
return NewInMemoryStore(defaultExpiration)
}
// Test typical cache interactions
func TestInMemoryCache_TypicalGetSet(t *testing.T) {
typicalGetSet(t, newInMemoryStore)
}
func TestInMemoryCache_IncrDecr(t *testing.T) {
incrDecr(t, newInMemoryStore)
}
func TestInMemoryCache_Expiration(t *testing.T) {
expiration(t, newInMemoryStore)
}
func TestInMemoryCache_EmptyCache(t *testing.T) {
emptyCache(t, newInMemoryStore)
}
func TestInMemoryCache_Replace(t *testing.T) {
testReplace(t, newInMemoryStore)
}
func TestInMemoryCache_Add(t *testing.T) {
testAdd(t, newInMemoryStore)
}

View File

@@ -1,87 +0,0 @@
package cache
import (
"github.com/bradfitz/gomemcache/memcache"
"time"
)
type MemcachedStore struct {
*memcache.Client
defaultExpiration time.Duration
}
func NewMemcachedStore(hostList []string, defaultExpiration time.Duration) *MemcachedStore {
return &MemcachedStore{memcache.New(hostList...), defaultExpiration}
}
func (c *MemcachedStore) Set(key string, value interface{}, expires time.Duration) error {
return c.invoke((*memcache.Client).Set, key, value, expires)
}
func (c *MemcachedStore) Add(key string, value interface{}, expires time.Duration) error {
return c.invoke((*memcache.Client).Add, key, value, expires)
}
func (c *MemcachedStore) Replace(key string, value interface{}, expires time.Duration) error {
return c.invoke((*memcache.Client).Replace, key, value, expires)
}
func (c *MemcachedStore) Get(key string, value interface{}) error {
item, err := c.Client.Get(key)
if err != nil {
return convertMemcacheError(err)
}
return deserialize(item.Value, value)
}
func (c *MemcachedStore) Delete(key string) error {
return convertMemcacheError(c.Client.Delete(key))
}
func (c *MemcachedStore) Increment(key string, delta uint64) (uint64, error) {
newValue, err := c.Client.Increment(key, delta)
return newValue, convertMemcacheError(err)
}
func (c *MemcachedStore) Decrement(key string, delta uint64) (uint64, error) {
newValue, err := c.Client.Decrement(key, delta)
return newValue, convertMemcacheError(err)
}
func (c *MemcachedStore) Flush() error {
return ErrNotSupport
}
func (c *MemcachedStore) invoke(storeFn func(*memcache.Client, *memcache.Item) error,
key string, value interface{}, expire time.Duration) error {
switch expire {
case DEFAULT:
expire = c.defaultExpiration
case FOREVER:
expire = time.Duration(0)
}
b, err := serialize(value)
if err != nil {
return err
}
return convertMemcacheError(storeFn(c.Client, &memcache.Item{
Key: key,
Value: b,
Expiration: int32(expire / time.Second),
}))
}
func convertMemcacheError(err error) error {
switch err {
case nil:
return nil
case memcache.ErrCacheMiss:
return ErrCacheMiss
case memcache.ErrNotStored:
return ErrNotStored
}
return err
}

View File

@@ -1,46 +0,0 @@
package cache
import (
"net"
"testing"
"time"
)
// These tests require memcached running on localhost:11211 (the default)
const testServer = "localhost:11211"
var newMemcachedStore = func(t *testing.T, defaultExpiration time.Duration) CacheStore {
c, err := net.Dial("tcp", testServer)
if err == nil {
c.Write([]byte("flush_all\r\n"))
c.Close()
return NewMemcachedStore([]string{testServer}, defaultExpiration)
}
t.Errorf("couldn't connect to memcached on %s", testServer)
t.FailNow()
panic("")
}
func TestMemcachedCache_TypicalGetSet(t *testing.T) {
typicalGetSet(t, newMemcachedStore)
}
func TestMemcachedCache_IncrDecr(t *testing.T) {
incrDecr(t, newMemcachedStore)
}
func TestMemcachedCache_Expiration(t *testing.T) {
expiration(t, newMemcachedStore)
}
func TestMemcachedCache_EmptyCache(t *testing.T) {
emptyCache(t, newMemcachedStore)
}
func TestMemcachedCache_Replace(t *testing.T) {
testReplace(t, newMemcachedStore)
}
func TestMemcachedCache_Add(t *testing.T) {
testAdd(t, newMemcachedStore)
}

View File

@@ -1,181 +0,0 @@
package cache
import (
"github.com/garyburd/redigo/redis"
"time"
)
// Wraps the Redis client to meet the Cache interface.
type RedisStore struct {
pool *redis.Pool
defaultExpiration time.Duration
}
// until redigo supports sharding/clustering, only one host will be in hostList
func NewRedisCache(host string, password string, defaultExpiration time.Duration) *RedisStore {
var pool = &redis.Pool{
MaxIdle: 5,
IdleTimeout: 240 * time.Second,
Dial: func() (redis.Conn, error) {
// the redis protocol should probably be made sett-able
c, err := redis.Dial("tcp", host)
if err != nil {
return nil, err
}
if len(password) > 0 {
if _, err := c.Do("AUTH", password); err != nil {
c.Close()
return nil, err
}
} else {
// check with PING
if _, err := c.Do("PING"); err != nil {
c.Close()
return nil, err
}
}
return c, err
},
// custom connection test method
TestOnBorrow: func(c redis.Conn, t time.Time) error {
if _, err := c.Do("PING"); err != nil {
return err
}
return nil
},
}
return &RedisStore{pool, defaultExpiration}
}
func (c *RedisStore) Set(key string, value interface{}, expires time.Duration) error {
return c.invoke(c.pool.Get().Do, key, value, expires)
}
func (c *RedisStore) Add(key string, value interface{}, expires time.Duration) error {
conn := c.pool.Get()
if exists(conn, key) {
return ErrNotStored
}
return c.invoke(conn.Do, key, value, expires)
}
func (c *RedisStore) Replace(key string, value interface{}, expires time.Duration) error {
conn := c.pool.Get()
if !exists(conn, key) {
return ErrNotStored
}
err := c.invoke(conn.Do, key, value, expires)
if value == nil {
return ErrNotStored
} else {
return err
}
}
func (c *RedisStore) Get(key string, ptrValue interface{}) error {
conn := c.pool.Get()
defer conn.Close()
raw, err := conn.Do("GET", key)
if raw == nil {
return ErrCacheMiss
}
item, err := redis.Bytes(raw, err)
if err != nil {
return err
}
return deserialize(item, ptrValue)
}
func exists(conn redis.Conn, key string) bool {
retval, _ := redis.Bool(conn.Do("EXISTS", key))
return retval
}
func (c *RedisStore) Delete(key string) error {
conn := c.pool.Get()
defer conn.Close()
if !exists(conn, key) {
return ErrCacheMiss
}
_, err := conn.Do("DEL", key)
return err
}
func (c *RedisStore) Increment(key string, delta uint64) (uint64, error) {
conn := c.pool.Get()
defer conn.Close()
// Check for existance *before* increment as per the cache contract.
// redis will auto create the key, and we don't want that. Since we need to do increment
// ourselves instead of natively via INCRBY (redis doesn't support wrapping), we get the value
// and do the exists check this way to minimize calls to Redis
val, err := conn.Do("GET", key)
if val == nil {
return 0, ErrCacheMiss
}
if err == nil {
currentVal, err := redis.Int64(val, nil)
if err != nil {
return 0, err
}
var sum int64 = currentVal + int64(delta)
_, err = conn.Do("SET", key, sum)
if err != nil {
return 0, err
}
return uint64(sum), nil
} else {
return 0, err
}
}
func (c *RedisStore) Decrement(key string, delta uint64) (newValue uint64, err error) {
conn := c.pool.Get()
defer conn.Close()
// Check for existance *before* increment as per the cache contract.
// redis will auto create the key, and we don't want that, hence the exists call
if !exists(conn, key) {
return 0, ErrCacheMiss
}
// Decrement contract says you can only go to 0
// so we go fetch the value and if the delta is greater than the amount,
// 0 out the value
currentVal, err := redis.Int64(conn.Do("GET", key))
if err == nil && delta > uint64(currentVal) {
tempint, err := redis.Int64(conn.Do("DECRBY", key, currentVal))
return uint64(tempint), err
}
tempint, err := redis.Int64(conn.Do("DECRBY", key, delta))
return uint64(tempint), err
}
func (c *RedisStore) Flush() error {
conn := c.pool.Get()
defer conn.Close()
_, err := conn.Do("FLUSHALL")
return err
}
func (c *RedisStore) invoke(f func(string, ...interface{}) (interface{}, error),
key string, value interface{}, expires time.Duration) error {
switch expires {
case DEFAULT:
expires = c.defaultExpiration
case FOREVER:
expires = time.Duration(0)
}
b, err := serialize(value)
if err != nil {
return err
}
conn := c.pool.Get()
defer conn.Close()
if expires > 0 {
_, err := f("SETEX", key, int32(expires/time.Second), b)
return err
} else {
_, err := f("SET", key, b)
return err
}
}

View File

@@ -1,48 +0,0 @@
package cache
import (
"net"
"testing"
"time"
)
// These tests require redis server running on localhost:6379 (the default)
const redisTestServer = "localhost:6379"
var newRedisStore = func(t *testing.T, defaultExpiration time.Duration) CacheStore {
c, err := net.Dial("tcp", redisTestServer)
if err == nil {
c.Write([]byte("flush_all\r\n"))
c.Close()
redisCache := NewRedisCache(redisTestServer, "", defaultExpiration)
redisCache.Flush()
return redisCache
}
t.Errorf("couldn't connect to redis on %s", redisTestServer)
t.FailNow()
panic("")
}
func TestRedisCache_TypicalGetSet(t *testing.T) {
typicalGetSet(t, newRedisStore)
}
func TestRedisCache_IncrDecr(t *testing.T) {
incrDecr(t, newRedisStore)
}
func TestRedisCache_Expiration(t *testing.T) {
expiration(t, newRedisStore)
}
func TestRedisCache_EmptyCache(t *testing.T) {
emptyCache(t, newRedisStore)
}
func TestRedisCache_Replace(t *testing.T) {
testReplace(t, newRedisStore)
}
func TestRedisCache_Add(t *testing.T) {
testAdd(t, newRedisStore)
}

View File

@@ -1,66 +0,0 @@
package cache
import (
"bytes"
"encoding/gob"
"reflect"
"strconv"
)
func serialize(value interface{}) ([]byte, error) {
if bytes, ok := value.([]byte); ok {
return bytes, nil
}
switch v := reflect.ValueOf(value); v.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return []byte(strconv.FormatInt(v.Int(), 10)), nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return []byte(strconv.FormatUint(v.Uint(), 10)), nil
}
var b bytes.Buffer
encoder := gob.NewEncoder(&b)
if err := encoder.Encode(value); err != nil {
return nil, err
}
return b.Bytes(), nil
}
func deserialize(byt []byte, ptr interface{}) (err error) {
if bytes, ok := ptr.(*[]byte); ok {
*bytes = byt
return nil
}
if v := reflect.ValueOf(ptr); v.Kind() == reflect.Ptr {
switch p := v.Elem(); p.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
var i int64
i, err = strconv.ParseInt(string(byt), 10, 64)
if err != nil {
return err
} else {
p.SetInt(i)
}
return nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
var i uint64
i, err = strconv.ParseUint(string(byt), 10, 64)
if err != nil {
return err
} else {
p.SetUint(i)
}
return nil
}
}
b := bytes.NewBuffer(byt)
decoder := gob.NewDecoder(b)
if err = decoder.Decode(ptr); err != nil {
return err
}
return nil
}

View File

@@ -1,53 +0,0 @@
package commonlog
import (
"bytes"
"io"
"strconv"
"sync"
"time"
"github.com/gin-gonic/gin"
)
// Instances a Logger middleware that will write the logs to gin.DefaultWriter
// By default gin.DefaultWriter = os.Stdout
func New() gin.HandlerFunc {
return NewWithWriter(gin.DefaultWriter)
}
// Instance a Logger middleware with the specified writter buffer.
// Example: os.Stdout, a file opened in write mode, a socket...
func NewWithWriter(out io.Writer) gin.HandlerFunc {
pool := &sync.Pool{
New: func() interface{} {
buf := new(bytes.Buffer)
return buf
},
}
return func(c *gin.Context) {
// Process request
c.Next()
//127.0.0.1 user-identifier frank [10/Oct/2000:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326
w := pool.Get().(*bytes.Buffer)
w.Reset()
w.WriteString(c.ClientIP())
w.WriteString(" - - ")
w.WriteString(time.Now().Format("[02/Jan/2006:15:04:05 -0700] "))
w.WriteString("\"")
w.WriteString(c.Request.Method)
w.WriteString(" ")
w.WriteString(c.Request.URL.Path)
w.WriteString(" ")
w.WriteString(c.Request.Proto)
w.WriteString("\" ")
w.WriteString(strconv.Itoa(c.Writer.Status()))
w.WriteString(" ")
w.WriteString(strconv.Itoa(c.Writer.Size()))
w.WriteString("\n")
w.WriteTo(out)
pool.Put(w)
}
}

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