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4
vendor/github.com/qiniu/x/log.v7/README.md
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vendor/github.com/qiniu/x/log.v7/README.md
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log
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===
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Extension module of golang logging
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521
vendor/github.com/qiniu/x/log.v7/logext.go
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vendor/github.com/qiniu/x/log.v7/logext.go
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package log
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"runtime"
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"strings"
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"sync"
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"time"
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)
|
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|
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// These flags define which text to prefix to each log entry generated by the Logger.
|
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const (
|
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// Bits or'ed together to control what's printed. There is no control over the
|
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// order they appear (the order listed here) or the format they present (as
|
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// described in the comments). A colon appears after these items:
|
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// 2009/0123 01:23:23.123123 /a/b/c/d.go:23: message
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Ldate = 1 << iota // the date: 2009/0123
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Ltime // the time: 01:23:23
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Lmicroseconds // microsecond resolution: 01:23:23.123123. assumes Ltime.
|
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Llongfile // full file name and line number: /a/b/c/d.go:23
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Lshortfile // final file name element and line number: d.go:23. overrides Llongfile
|
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Lmodule // module name
|
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Llevel // level: 0(Debug), 1(Info), 2(Warn), 3(Error), 4(Panic), 5(Fatal)
|
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LstdFlags = Ldate | Ltime | Lmicroseconds // initial values for the standard logger
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Ldefault = Lmodule | Llevel | Lshortfile | LstdFlags
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) // [prefix][time][level][module][shortfile|longfile]
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|
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const (
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Ldebug = iota
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Linfo
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Lwarn
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Lerror
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Lpanic
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Lfatal
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)
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|
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var levels = []string{
|
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"[DEBUG]",
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"[INFO]",
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"[WARN]",
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"[ERROR]",
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"[PANIC]",
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"[FATAL]",
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}
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|
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// A Logger represents an active logging object that generates lines of
|
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// output to an io.Writer. Each logging operation makes a single call to
|
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// the Writer's Write method. A Logger can be used simultaneously from
|
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// multiple goroutines; it guarantees to serialize access to the Writer.
|
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type Logger struct {
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mu sync.Mutex // ensures atomic writes; protects the following fields
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prefix string // prefix to write at beginning of each line
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flag int // properties
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Level int // debug level
|
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out io.Writer // destination for output
|
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buf bytes.Buffer // for accumulating text to write
|
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levelStats [6]int64
|
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}
|
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|
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// New creates a new Logger.
|
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// The out variable sets the destination to which log data will be written.
|
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// The prefix appears at the beginning of each generated log line.
|
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// The flag argument defines the logging properties.
|
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func New(out io.Writer, prefix string, flag int) *Logger {
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return &Logger{out: out, prefix: prefix, Level: 1, flag: flag}
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}
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|
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var Std = New(os.Stderr, "", Ldefault)
|
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|
||||
// Cheap integer to fixed-width decimal ASCII. Give a negative width to avoid zero-padding.
|
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// Knows the buffer has capacity.
|
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func itoa(buf *bytes.Buffer, i int, wid int) {
|
||||
var u uint = uint(i)
|
||||
if u == 0 && wid <= 1 {
|
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buf.WriteByte('0')
|
||||
return
|
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}
|
||||
|
||||
// Assemble decimal in reverse order.
|
||||
var b [32]byte
|
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bp := len(b)
|
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for ; u > 0 || wid > 0; u /= 10 {
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bp--
|
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wid--
|
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b[bp] = byte(u%10) + '0'
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}
|
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|
||||
// avoid slicing b to avoid an allocation.
|
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for bp < len(b) {
|
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buf.WriteByte(b[bp])
|
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bp++
|
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}
|
||||
}
|
||||
|
||||
func shortFile(file string, flag int) string {
|
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sep := "/"
|
||||
if (flag & Lmodule) != 0 {
|
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sep = "/src/"
|
||||
}
|
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pos := strings.LastIndex(file, sep)
|
||||
if pos != -1 {
|
||||
return file[pos+5:]
|
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}
|
||||
return file
|
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}
|
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|
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func (l *Logger) formatHeader(buf *bytes.Buffer, t time.Time, file string, line int, lvl int, reqId string) {
|
||||
if l.prefix != "" {
|
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buf.WriteString(l.prefix)
|
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}
|
||||
if l.flag&(Ldate|Ltime|Lmicroseconds) != 0 {
|
||||
if l.flag&Ldate != 0 {
|
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year, month, day := t.Date()
|
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itoa(buf, year, 4)
|
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buf.WriteByte('/')
|
||||
itoa(buf, int(month), 2)
|
||||
buf.WriteByte('/')
|
||||
itoa(buf, day, 2)
|
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buf.WriteByte(' ')
|
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}
|
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if l.flag&(Ltime|Lmicroseconds) != 0 {
|
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hour, min, sec := t.Clock()
|
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itoa(buf, hour, 2)
|
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buf.WriteByte(':')
|
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itoa(buf, min, 2)
|
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buf.WriteByte(':')
|
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itoa(buf, sec, 2)
|
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if l.flag&Lmicroseconds != 0 {
|
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buf.WriteByte('.')
|
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itoa(buf, t.Nanosecond()/1e3, 6)
|
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}
|
||||
buf.WriteByte(' ')
|
||||
}
|
||||
}
|
||||
if reqId != "" {
|
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buf.WriteByte('[')
|
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buf.WriteString(reqId)
|
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buf.WriteByte(']')
|
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}
|
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if l.flag&Llevel != 0 {
|
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buf.WriteString(levels[lvl])
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}
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if l.flag&(Lshortfile|Llongfile) != 0 {
|
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if l.flag&Lshortfile != 0 {
|
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file = shortFile(file, l.flag)
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}
|
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buf.WriteByte(' ')
|
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buf.WriteString(file)
|
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buf.WriteByte(':')
|
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itoa(buf, line, -1)
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buf.WriteString(": ")
|
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}
|
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}
|
||||
|
||||
// Output writes the output for a logging event. The string s contains
|
||||
// the text to print after the prefix specified by the flags of the
|
||||
// Logger. A newline is appended if the last character of s is not
|
||||
// already a newline. Calldepth is used to recover the PC and is
|
||||
// provided for generality, although at the moment on all pre-defined
|
||||
// paths it will be 2.
|
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func (l *Logger) Output(reqId string, lvl int, calldepth int, s string) error {
|
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if lvl < l.Level {
|
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return nil
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}
|
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now := time.Now() // get this early.
|
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var file string
|
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var line int
|
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l.mu.Lock()
|
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defer l.mu.Unlock()
|
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if l.flag&(Lshortfile|Llongfile|Lmodule) != 0 {
|
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// release lock while getting caller info - it's expensive.
|
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l.mu.Unlock()
|
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var ok bool
|
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_, file, line, ok = runtime.Caller(calldepth)
|
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if !ok {
|
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file = "???"
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line = 0
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}
|
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l.mu.Lock()
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}
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l.levelStats[lvl]++
|
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l.buf.Reset()
|
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l.formatHeader(&l.buf, now, file, line, lvl, reqId)
|
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l.buf.WriteString(s)
|
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if len(s) > 0 && s[len(s)-1] != '\n' {
|
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l.buf.WriteByte('\n')
|
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}
|
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_, err := l.out.Write(l.buf.Bytes())
|
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return err
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
// Printf calls l.Output to print to the logger.
|
||||
// Arguments are handled in the manner of fmt.Printf.
|
||||
func (l *Logger) Printf(format string, v ...interface{}) {
|
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l.Output("", Linfo, 2, fmt.Sprintf(format, v...))
|
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}
|
||||
|
||||
// Print calls l.Output to print to the logger.
|
||||
// Arguments are handled in the manner of fmt.Print.
|
||||
func (l *Logger) Print(v ...interface{}) { l.Output("", Linfo, 2, fmt.Sprint(v...)) }
|
||||
|
||||
// Println calls l.Output to print to the logger.
|
||||
// Arguments are handled in the manner of fmt.Println.
|
||||
func (l *Logger) Println(v ...interface{}) { l.Output("", Linfo, 2, fmt.Sprintln(v...)) }
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Debugf(format string, v ...interface{}) {
|
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if Ldebug < l.Level {
|
||||
return
|
||||
}
|
||||
l.Output("", Ldebug, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func (l *Logger) Debug(v ...interface{}) {
|
||||
if Ldebug < l.Level {
|
||||
return
|
||||
}
|
||||
l.Output("", Ldebug, 2, fmt.Sprintln(v...))
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Infof(format string, v ...interface{}) {
|
||||
if Linfo < l.Level {
|
||||
return
|
||||
}
|
||||
l.Output("", Linfo, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func (l *Logger) Info(v ...interface{}) {
|
||||
if Linfo < l.Level {
|
||||
return
|
||||
}
|
||||
l.Output("", Linfo, 2, fmt.Sprintln(v...))
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Warnf(format string, v ...interface{}) {
|
||||
l.Output("", Lwarn, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func (l *Logger) Warn(v ...interface{}) { l.Output("", Lwarn, 2, fmt.Sprintln(v...)) }
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Errorf(format string, v ...interface{}) {
|
||||
l.Output("", Lerror, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func (l *Logger) Error(v ...interface{}) { l.Output("", Lerror, 2, fmt.Sprintln(v...)) }
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Fatal(v ...interface{}) {
|
||||
l.Output("", Lfatal, 2, fmt.Sprint(v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// Fatalf is equivalent to l.Printf() followed by a call to os.Exit(1).
|
||||
func (l *Logger) Fatalf(format string, v ...interface{}) {
|
||||
l.Output("", Lfatal, 2, fmt.Sprintf(format, v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// Fatalln is equivalent to l.Println() followed by a call to os.Exit(1).
|
||||
func (l *Logger) Fatalln(v ...interface{}) {
|
||||
l.Output("", Lfatal, 2, fmt.Sprintln(v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
// Panic is equivalent to l.Print() followed by a call to panic().
|
||||
func (l *Logger) Panic(v ...interface{}) {
|
||||
s := fmt.Sprint(v...)
|
||||
l.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// Panicf is equivalent to l.Printf() followed by a call to panic().
|
||||
func (l *Logger) Panicf(format string, v ...interface{}) {
|
||||
s := fmt.Sprintf(format, v...)
|
||||
l.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// Panicln is equivalent to l.Println() followed by a call to panic().
|
||||
func (l *Logger) Panicln(v ...interface{}) {
|
||||
s := fmt.Sprintln(v...)
|
||||
l.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Stack(v ...interface{}) {
|
||||
s := fmt.Sprint(v...)
|
||||
s += "\n"
|
||||
buf := make([]byte, 1024*1024)
|
||||
n := runtime.Stack(buf, true)
|
||||
s += string(buf[:n])
|
||||
s += "\n"
|
||||
l.Output("", Lerror, 2, s)
|
||||
}
|
||||
|
||||
func (l *Logger) SingleStack(v ...interface{}) {
|
||||
s := fmt.Sprint(v...)
|
||||
s += "\n"
|
||||
buf := make([]byte, 1024*1024)
|
||||
n := runtime.Stack(buf, false)
|
||||
s += string(buf[:n])
|
||||
s += "\n"
|
||||
l.Output("", Lerror, 2, s)
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func (l *Logger) Stat() (stats []int64) {
|
||||
l.mu.Lock()
|
||||
v := l.levelStats
|
||||
l.mu.Unlock()
|
||||
return v[:]
|
||||
}
|
||||
|
||||
// Flags returns the output flags for the logger.
|
||||
func (l *Logger) Flags() int {
|
||||
l.mu.Lock()
|
||||
defer l.mu.Unlock()
|
||||
return l.flag
|
||||
}
|
||||
|
||||
// SetFlags sets the output flags for the logger.
|
||||
func (l *Logger) SetFlags(flag int) {
|
||||
l.mu.Lock()
|
||||
defer l.mu.Unlock()
|
||||
l.flag = flag
|
||||
}
|
||||
|
||||
// Prefix returns the output prefix for the logger.
|
||||
func (l *Logger) Prefix() string {
|
||||
l.mu.Lock()
|
||||
defer l.mu.Unlock()
|
||||
return l.prefix
|
||||
}
|
||||
|
||||
// SetPrefix sets the output prefix for the logger.
|
||||
func (l *Logger) SetPrefix(prefix string) {
|
||||
l.mu.Lock()
|
||||
defer l.mu.Unlock()
|
||||
l.prefix = prefix
|
||||
}
|
||||
|
||||
// SetOutputLevel sets the output level for the logger.
|
||||
func (l *Logger) SetOutputLevel(lvl int) {
|
||||
l.mu.Lock()
|
||||
defer l.mu.Unlock()
|
||||
l.Level = lvl
|
||||
}
|
||||
|
||||
// SetOutput sets the output destination for the standard logger.
|
||||
func SetOutput(w io.Writer) {
|
||||
Std.mu.Lock()
|
||||
defer Std.mu.Unlock()
|
||||
Std.out = w
|
||||
}
|
||||
|
||||
// Flags returns the output flags for the standard logger.
|
||||
func Flags() int {
|
||||
return Std.Flags()
|
||||
}
|
||||
|
||||
// SetFlags sets the output flags for the standard logger.
|
||||
func SetFlags(flag int) {
|
||||
Std.SetFlags(flag)
|
||||
}
|
||||
|
||||
// Prefix returns the output prefix for the standard logger.
|
||||
func Prefix() string {
|
||||
return Std.Prefix()
|
||||
}
|
||||
|
||||
// SetPrefix sets the output prefix for the standard logger.
|
||||
func SetPrefix(prefix string) {
|
||||
Std.SetPrefix(prefix)
|
||||
}
|
||||
|
||||
func SetOutputLevel(lvl int) {
|
||||
Std.SetOutputLevel(lvl)
|
||||
}
|
||||
|
||||
func GetOutputLevel() int {
|
||||
return Std.Level
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
// Print calls Output to print to the standard logger.
|
||||
// Arguments are handled in the manner of fmt.Print.
|
||||
func Print(v ...interface{}) {
|
||||
Std.Output("", Linfo, 2, fmt.Sprint(v...))
|
||||
}
|
||||
|
||||
// Printf calls Output to print to the standard logger.
|
||||
// Arguments are handled in the manner of fmt.Printf.
|
||||
func Printf(format string, v ...interface{}) {
|
||||
Std.Output("", Linfo, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
// Println calls Output to print to the standard logger.
|
||||
// Arguments are handled in the manner of fmt.Println.
|
||||
func Println(v ...interface{}) {
|
||||
Std.Output("", Linfo, 2, fmt.Sprintln(v...))
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func Debugf(format string, v ...interface{}) {
|
||||
if Ldebug < Std.Level {
|
||||
return
|
||||
}
|
||||
Std.Output("", Ldebug, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func Debug(v ...interface{}) {
|
||||
if Ldebug < Std.Level {
|
||||
return
|
||||
}
|
||||
Std.Output("", Ldebug, 2, fmt.Sprintln(v...))
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func Infof(format string, v ...interface{}) {
|
||||
if Linfo < Std.Level {
|
||||
return
|
||||
}
|
||||
Std.Output("", Linfo, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func Info(v ...interface{}) {
|
||||
if Linfo < Std.Level {
|
||||
return
|
||||
}
|
||||
Std.Output("", Linfo, 2, fmt.Sprintln(v...))
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func Warnf(format string, v ...interface{}) {
|
||||
Std.Output("", Lwarn, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func Warn(v ...interface{}) { Std.Output("", Lwarn, 2, fmt.Sprintln(v...)) }
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func Errorf(format string, v ...interface{}) {
|
||||
Std.Output("", Lerror, 2, fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
func Error(v ...interface{}) { Std.Output("", Lerror, 2, fmt.Sprintln(v...)) }
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
// Fatal is equivalent to Print() followed by a call to os.Exit(1).
|
||||
func Fatal(v ...interface{}) {
|
||||
Std.Output("", Lfatal, 2, fmt.Sprint(v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// Fatalf is equivalent to Printf() followed by a call to os.Exit(1).
|
||||
func Fatalf(format string, v ...interface{}) {
|
||||
Std.Output("", Lfatal, 2, fmt.Sprintf(format, v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// Fatalln is equivalent to Println() followed by a call to os.Exit(1).
|
||||
func Fatalln(v ...interface{}) {
|
||||
Std.Output("", Lfatal, 2, fmt.Sprintln(v...))
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
// Panic is equivalent to Print() followed by a call to panic().
|
||||
func Panic(v ...interface{}) {
|
||||
s := fmt.Sprint(v...)
|
||||
Std.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// Panicf is equivalent to Printf() followed by a call to panic().
|
||||
func Panicf(format string, v ...interface{}) {
|
||||
s := fmt.Sprintf(format, v...)
|
||||
Std.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// Panicln is equivalent to Println() followed by a call to panic().
|
||||
func Panicln(v ...interface{}) {
|
||||
s := fmt.Sprintln(v...)
|
||||
Std.Output("", Lpanic, 2, s)
|
||||
panic(s)
|
||||
}
|
||||
|
||||
// -----------------------------------------
|
||||
|
||||
func Stack(v ...interface{}) {
|
||||
Std.Stack(v...)
|
||||
}
|
||||
|
||||
func SingleStack(v ...interface{}) {
|
||||
Std.SingleStack(v...)
|
||||
}
|
||||
79
vendor/github.com/qiniu/x/log.v7/logext_test.go
generated
vendored
Normal file
79
vendor/github.com/qiniu/x/log.v7/logext_test.go
generated
vendored
Normal file
@@ -0,0 +1,79 @@
|
||||
package log
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"regexp"
|
||||
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
)
|
||||
|
||||
func TestLog(t *testing.T) {
|
||||
// keep Std clean
|
||||
std := Std
|
||||
SetOutputLevel(Ldebug)
|
||||
|
||||
Debugf("Debug: foo\n")
|
||||
Debug("Debug: foo")
|
||||
|
||||
Infof("Info: foo\n")
|
||||
Info("Info: foo")
|
||||
|
||||
Warnf("Warn: foo\n")
|
||||
Warn("Warn: foo")
|
||||
|
||||
Errorf("Error: foo\n")
|
||||
Error("Error: foo")
|
||||
|
||||
SetOutputLevel(Linfo)
|
||||
|
||||
Debugf("Debug: foo\n")
|
||||
Debug("Debug: foo")
|
||||
|
||||
Infof("Info: foo\n")
|
||||
Info("Info: foo")
|
||||
|
||||
Warnf("Warn: foo\n")
|
||||
Warn("Warn: foo")
|
||||
|
||||
Errorf("Error: foo\n")
|
||||
Error("Error: foo")
|
||||
|
||||
Std = std
|
||||
}
|
||||
|
||||
func TestLog_Time(t *testing.T) {
|
||||
// keep Std clean
|
||||
std := Std
|
||||
out := bytes.Buffer{}
|
||||
Std = New(&out, Std.Prefix(), Std.Flags())
|
||||
|
||||
assert.Equal(t, Std.Level, Linfo)
|
||||
Info("test")
|
||||
outStr := out.String()
|
||||
assert.True(t, regexp.MustCompile(`^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2}.\d{6}$`).MatchString(outStr[:26]))
|
||||
assert.Equal(t, outStr[26:], " [INFO] qiniupkg.com/x/log.v7/logext_test.go:53: test\n")
|
||||
|
||||
Std = std
|
||||
}
|
||||
|
||||
func TestLog_Level(t *testing.T) {
|
||||
// keep Std clean
|
||||
std := Std
|
||||
|
||||
out := bytes.Buffer{}
|
||||
Std = New(&out, Std.Prefix(), Std.Flags())
|
||||
SetOutputLevel(Lwarn)
|
||||
|
||||
assert.Equal(t, Std.Level, Lwarn)
|
||||
Debug("test")
|
||||
assert.Equal(t, out.String(), "")
|
||||
Info("test")
|
||||
assert.Equal(t, out.String(), "")
|
||||
Warn("test")
|
||||
outStr := out.String()
|
||||
assert.Equal(t, outStr[26:], " [WARN] qiniupkg.com/x/log.v7/logext_test.go:74: test\n")
|
||||
|
||||
Std = std
|
||||
}
|
||||
Reference in New Issue
Block a user