refact: openai,claude
This commit is contained in:
Sakurasan
309
pkg/openai/chat.go
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309
pkg/openai/chat.go
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@@ -0,0 +1,309 @@
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package openai
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"opencatd-open/pkg/tokenizer"
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"opencatd-open/store"
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"os"
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"strings"
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"github.com/gin-gonic/gin"
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)
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const (
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OpenAI_Endpoint = "https://api.openai.com/v1/chat/completions"
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)
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var (
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BaseURL string // "https://api.openai.com"
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AIGateWay_Endpoint = "https://gateway.ai.cloudflare.com/v1/431ba10f11200d544922fbca177aaa7f/openai/openai/chat/completions"
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)
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func init() {
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if os.Getenv("OpenAI_Endpoint") != "" {
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BaseURL = os.Getenv("OpenAI_Endpoint")
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}
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if os.Getenv("AIGateWay_Endpoint") != "" {
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AIGateWay_Endpoint = os.Getenv("AIGateWay_Endpoint")
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}
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}
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// Vision Content
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type VisionContent struct {
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Type string `json:"type,omitempty"`
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Text string `json:"text,omitempty"`
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ImageURL *VisionImageURL `json:"image_url,omitempty"`
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}
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type VisionImageURL struct {
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URL string `json:"url,omitempty"`
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Detail string `json:"detail,omitempty"`
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}
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type ChatCompletionMessage struct {
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Role string `json:"role"`
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Content json.RawMessage `json:"content"`
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Name string `json:"name,omitempty"`
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}
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type FunctionDefinition struct {
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Name string `json:"name"`
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Description string `json:"description,omitempty"`
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Parameters any `json:"parameters"`
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}
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type Tool struct {
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Type string `json:"type"`
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Function *FunctionDefinition `json:"function,omitempty"`
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}
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type ChatCompletionRequest struct {
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Model string `json:"model"`
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Messages []ChatCompletionMessage `json:"messages"`
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MaxTokens int `json:"max_tokens,omitempty"`
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Temperature float64 `json:"temperature,omitempty"`
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TopP float64 `json:"top_p,omitempty"`
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N int `json:"n,omitempty"`
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Stream bool `json:"stream,omitempty"`
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Stop []string `json:"stop,omitempty"`
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PresencePenalty float64 `json:"presence_penalty,omitempty"`
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FrequencyPenalty float64 `json:"frequency_penalty,omitempty"`
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LogitBias map[string]int `json:"logit_bias,omitempty"`
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User string `json:"user,omitempty"`
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// Functions []FunctionDefinition `json:"functions,omitempty"`
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// FunctionCall any `json:"function_call,omitempty"`
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Tools []Tool `json:"tools,omitempty"`
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// ToolChoice any `json:"tool_choice,omitempty"`
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}
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func (c ChatCompletionRequest) ToByteJson() []byte {
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bytejson, _ := json.Marshal(c)
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return bytejson
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}
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type ToolCall struct {
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ID string `json:"id"`
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Type string `json:"type"`
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Function struct {
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Name string `json:"name"`
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Arguments string `json:"arguments"`
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} `json:"function"`
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}
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type ChatCompletionResponse struct {
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ID string `json:"id"`
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Object string `json:"object"`
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Created int `json:"created"`
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Model string `json:"model"`
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Choices []struct {
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Index int `json:"index"`
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Message struct {
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Role string `json:"role"`
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Content string `json:"content"`
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ToolCalls []ToolCall `json:"tool_calls"`
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} `json:"message"`
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Logprobs string `json:"logprobs"`
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FinishReason string `json:"finish_reason"`
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} `json:"choices"`
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Usage struct {
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PromptTokens int `json:"prompt_tokens"`
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CompletionTokens int `json:"completion_tokens"`
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TotalTokens int `json:"total_tokens"`
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} `json:"usage"`
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SystemFingerprint string `json:"system_fingerprint"`
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}
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type Choice struct {
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Index int `json:"index"`
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Delta struct {
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Role string `json:"role"`
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Content string `json:"content"`
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ToolCalls []ToolCall `json:"tool_calls"`
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} `json:"delta"`
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FinishReason string `json:"finish_reason"`
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Usage struct {
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PromptTokens int `json:"prompt_tokens"`
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CompletionTokens int `json:"completion_tokens"`
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TotalTokens int `json:"total_tokens"`
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} `json:"usage"`
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}
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type ChatCompletionStreamResponse struct {
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ID string `json:"id"`
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Object string `json:"object"`
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Created int `json:"created"`
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Model string `json:"model"`
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Choices []Choice `json:"choices"`
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}
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func (c *ChatCompletionStreamResponse) ByteJson() []byte {
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bytejson, _ := json.Marshal(c)
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return bytejson
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}
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func ChatProxy(c *gin.Context, chatReq *ChatCompletionRequest) {
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usagelog := store.Tokens{Model: chatReq.Model}
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token, _ := c.Get("localuser")
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lu, err := store.GetUserByToken(token.(string))
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{
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"error": gin.H{
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"message": err.Error(),
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},
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})
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return
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}
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usagelog.UserID = int(lu.ID)
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var prompt string
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for _, msg := range chatReq.Messages {
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// prompt += "<" + msg.Role + ">: " + msg.Content + "\n"
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var visioncontent []VisionContent
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if err := json.Unmarshal(msg.Content, &visioncontent); err != nil {
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prompt += "<" + msg.Role + ">: " + string(msg.Content) + "\n"
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} else {
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if len(visioncontent) > 0 {
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for _, content := range visioncontent {
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if content.Type == "text" {
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prompt += "<" + msg.Role + ">: " + content.Text + "\n"
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} else if content.Type == "image_url" {
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if strings.HasPrefix(content.ImageURL.URL, "http") {
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fmt.Println("链接:", content.ImageURL.URL)
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} else if strings.HasPrefix(content.ImageURL.URL, "data:image") {
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fmt.Println("base64:", content.ImageURL.URL[:20])
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}
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// todo image tokens
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}
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}
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}
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}
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if len(chatReq.Tools) > 0 {
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tooljson, _ := json.Marshal(chatReq.Tools)
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prompt += "<tools>: " + string(tooljson) + "\n"
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}
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}
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usagelog.PromptCount = tokenizer.NumTokensFromStr(prompt, chatReq.Model)
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onekey, err := store.SelectKeyCache("openai")
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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var req *http.Request
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if onekey.EndPoint != "" { // 优先key的endpoint
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req, err = http.NewRequest(c.Request.Method, onekey.EndPoint+c.Request.RequestURI, bytes.NewReader(chatReq.ToByteJson()))
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} else {
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if BaseURL != "" { // 其次BaseURL
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req, err = http.NewRequest(c.Request.Method, BaseURL+c.Request.RequestURI, bytes.NewReader(chatReq.ToByteJson()))
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} else { // 最后是gateway的endpoint
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req, err = http.NewRequest(c.Request.Method, AIGateWay_Endpoint, bytes.NewReader(chatReq.ToByteJson()))
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}
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}
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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req.Header = c.Request.Header
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req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", onekey.Key))
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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defer resp.Body.Close()
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teeReader := io.TeeReader(resp.Body, c.Writer)
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var result string
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if chatReq.Stream {
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// 流式响应
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scanner := bufio.NewScanner(teeReader)
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for scanner.Scan() {
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line := scanner.Bytes()
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if len(line) > 0 && bytes.HasPrefix(line, []byte("data: ")) {
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if bytes.HasPrefix(line, []byte("data: [DONE]")) {
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break
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}
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var opiResp ChatCompletionStreamResponse
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line = bytes.Replace(line, []byte("data: "), []byte(""), -1)
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line = bytes.TrimSpace(line)
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if err := json.Unmarshal(line, &opiResp); err != nil {
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continue
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}
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if opiResp.Choices != nil && len(opiResp.Choices) > 0 {
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if opiResp.Choices[0].Delta.Role != "" {
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result += "<" + opiResp.Choices[0].Delta.Role + "> "
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}
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result += opiResp.Choices[0].Delta.Content // 计算Content Token
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if len(opiResp.Choices[0].Delta.ToolCalls) > 0 { // 计算ToolCalls token
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if opiResp.Choices[0].Delta.ToolCalls[0].Function.Name != "" {
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result += "name:" + opiResp.Choices[0].Delta.ToolCalls[0].Function.Name + " arguments:"
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}
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result += opiResp.Choices[0].Delta.ToolCalls[0].Function.Arguments
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}
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} else {
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continue
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}
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}
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}
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} else {
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// 处理非流式响应
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body, err := io.ReadAll(teeReader)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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var opiResp ChatCompletionResponse
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if err := json.Unmarshal(body, &opiResp); err != nil {
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log.Println("Error parsing JSON:", err)
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c.JSON(http.StatusInternalServerError, gin.H{"error": "Error parsing JSON," + err.Error()})
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return
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}
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if opiResp.Choices != nil && len(opiResp.Choices) > 0 {
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if opiResp.Choices[0].Message.Role != "" {
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result += "<" + opiResp.Choices[0].Message.Role + "> "
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}
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result += opiResp.Choices[0].Message.Content
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if len(opiResp.Choices[0].Message.ToolCalls) > 0 {
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if opiResp.Choices[0].Message.ToolCalls[0].Function.Name != "" {
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result += "name:" + opiResp.Choices[0].Message.ToolCalls[0].Function.Name + " arguments:"
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}
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result += opiResp.Choices[0].Message.ToolCalls[0].Function.Arguments
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}
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}
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}
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usagelog.CompletionCount = tokenizer.NumTokensFromStr(result, chatReq.Model)
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usagelog.Cost = fmt.Sprintf("%.6f", tokenizer.Cost(usagelog.Model, usagelog.PromptCount, usagelog.CompletionCount))
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if err := store.Record(&usagelog); err != nil {
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log.Println(err)
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}
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if err := store.SumDaily(usagelog.UserID); err != nil {
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log.Println(err)
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}
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}
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type ErrResponse struct {
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Error struct {
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Message string `json:"message"`
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Code string `json:"code"`
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} `json:"error"`
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}
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