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refactor: refactor relay part (#935)
This commit is contained in:
JustSong
GitHub
319
relay/channel/baidu/main.go
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319
relay/channel/baidu/main.go
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@@ -0,0 +1,319 @@
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package baidu
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import (
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"bufio"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/gin-gonic/gin"
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"io"
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"net/http"
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"one-api/common"
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"one-api/relay/channel/openai"
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"one-api/relay/constant"
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"one-api/relay/util"
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"strings"
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"sync"
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"time"
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)
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// https://cloud.baidu.com/doc/WENXINWORKSHOP/s/flfmc9do2
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type BaiduTokenResponse struct {
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ExpiresIn int `json:"expires_in"`
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AccessToken string `json:"access_token"`
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}
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type BaiduMessage struct {
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Role string `json:"role"`
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Content string `json:"content"`
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}
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type BaiduChatRequest struct {
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Messages []BaiduMessage `json:"messages"`
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Stream bool `json:"stream"`
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UserId string `json:"user_id,omitempty"`
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}
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type BaiduError struct {
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ErrorCode int `json:"error_code"`
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ErrorMsg string `json:"error_msg"`
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}
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var baiduTokenStore sync.Map
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func ConvertRequest(request openai.GeneralOpenAIRequest) *BaiduChatRequest {
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messages := make([]BaiduMessage, 0, len(request.Messages))
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for _, message := range request.Messages {
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if message.Role == "system" {
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messages = append(messages, BaiduMessage{
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Role: "user",
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Content: message.StringContent(),
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})
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messages = append(messages, BaiduMessage{
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Role: "assistant",
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Content: "Okay",
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})
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} else {
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messages = append(messages, BaiduMessage{
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Role: message.Role,
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Content: message.StringContent(),
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})
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}
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}
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return &BaiduChatRequest{
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Messages: messages,
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Stream: request.Stream,
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}
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}
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func responseBaidu2OpenAI(response *ChatResponse) *openai.TextResponse {
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choice := openai.TextResponseChoice{
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Index: 0,
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Message: openai.Message{
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Role: "assistant",
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Content: response.Result,
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},
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FinishReason: "stop",
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}
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fullTextResponse := openai.TextResponse{
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Id: response.Id,
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Object: "chat.completion",
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Created: response.Created,
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Choices: []openai.TextResponseChoice{choice},
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Usage: response.Usage,
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}
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return &fullTextResponse
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}
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func streamResponseBaidu2OpenAI(baiduResponse *ChatStreamResponse) *openai.ChatCompletionsStreamResponse {
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var choice openai.ChatCompletionsStreamResponseChoice
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choice.Delta.Content = baiduResponse.Result
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if baiduResponse.IsEnd {
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choice.FinishReason = &constant.StopFinishReason
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}
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response := openai.ChatCompletionsStreamResponse{
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Id: baiduResponse.Id,
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Object: "chat.completion.chunk",
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Created: baiduResponse.Created,
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Model: "ernie-bot",
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Choices: []openai.ChatCompletionsStreamResponseChoice{choice},
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}
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return &response
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}
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func ConvertEmbeddingRequest(request openai.GeneralOpenAIRequest) *EmbeddingRequest {
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return &EmbeddingRequest{
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Input: request.ParseInput(),
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}
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}
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func embeddingResponseBaidu2OpenAI(response *EmbeddingResponse) *openai.EmbeddingResponse {
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openAIEmbeddingResponse := openai.EmbeddingResponse{
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Object: "list",
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Data: make([]openai.EmbeddingResponseItem, 0, len(response.Data)),
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Model: "baidu-embedding",
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Usage: response.Usage,
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}
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for _, item := range response.Data {
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openAIEmbeddingResponse.Data = append(openAIEmbeddingResponse.Data, openai.EmbeddingResponseItem{
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Object: item.Object,
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Index: item.Index,
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Embedding: item.Embedding,
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})
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}
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return &openAIEmbeddingResponse
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}
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func StreamHandler(c *gin.Context, resp *http.Response) (*openai.ErrorWithStatusCode, *openai.Usage) {
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var usage openai.Usage
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scanner := bufio.NewScanner(resp.Body)
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scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
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if atEOF && len(data) == 0 {
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return 0, nil, nil
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}
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if i := strings.Index(string(data), "\n"); i >= 0 {
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return i + 1, data[0:i], nil
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}
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if atEOF {
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return len(data), data, nil
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}
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return 0, nil, nil
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})
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dataChan := make(chan string)
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stopChan := make(chan bool)
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go func() {
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for scanner.Scan() {
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data := scanner.Text()
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if len(data) < 6 { // ignore blank line or wrong format
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continue
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}
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data = data[6:]
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dataChan <- data
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}
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stopChan <- true
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}()
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common.SetEventStreamHeaders(c)
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c.Stream(func(w io.Writer) bool {
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select {
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case data := <-dataChan:
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var baiduResponse ChatStreamResponse
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err := json.Unmarshal([]byte(data), &baiduResponse)
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if err != nil {
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common.SysError("error unmarshalling stream response: " + err.Error())
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return true
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}
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if baiduResponse.Usage.TotalTokens != 0 {
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usage.TotalTokens = baiduResponse.Usage.TotalTokens
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usage.PromptTokens = baiduResponse.Usage.PromptTokens
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usage.CompletionTokens = baiduResponse.Usage.TotalTokens - baiduResponse.Usage.PromptTokens
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}
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response := streamResponseBaidu2OpenAI(&baiduResponse)
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jsonResponse, err := json.Marshal(response)
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if err != nil {
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common.SysError("error marshalling stream response: " + err.Error())
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return true
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}
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c.Render(-1, common.CustomEvent{Data: "data: " + string(jsonResponse)})
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return true
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case <-stopChan:
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c.Render(-1, common.CustomEvent{Data: "data: [DONE]"})
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return false
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}
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})
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err := resp.Body.Close()
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if err != nil {
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return openai.ErrorWrapper(err, "close_response_body_failed", http.StatusInternalServerError), nil
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}
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return nil, &usage
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}
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func Handler(c *gin.Context, resp *http.Response) (*openai.ErrorWithStatusCode, *openai.Usage) {
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var baiduResponse ChatResponse
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responseBody, err := io.ReadAll(resp.Body)
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if err != nil {
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return openai.ErrorWrapper(err, "read_response_body_failed", http.StatusInternalServerError), nil
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}
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err = resp.Body.Close()
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if err != nil {
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return openai.ErrorWrapper(err, "close_response_body_failed", http.StatusInternalServerError), nil
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}
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err = json.Unmarshal(responseBody, &baiduResponse)
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if err != nil {
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return openai.ErrorWrapper(err, "unmarshal_response_body_failed", http.StatusInternalServerError), nil
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}
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if baiduResponse.ErrorMsg != "" {
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return &openai.ErrorWithStatusCode{
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Error: openai.Error{
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Message: baiduResponse.ErrorMsg,
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Type: "baidu_error",
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Param: "",
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Code: baiduResponse.ErrorCode,
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},
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StatusCode: resp.StatusCode,
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}, nil
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}
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fullTextResponse := responseBaidu2OpenAI(&baiduResponse)
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fullTextResponse.Model = "ernie-bot"
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jsonResponse, err := json.Marshal(fullTextResponse)
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if err != nil {
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return openai.ErrorWrapper(err, "marshal_response_body_failed", http.StatusInternalServerError), nil
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}
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c.Writer.Header().Set("Content-Type", "application/json")
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c.Writer.WriteHeader(resp.StatusCode)
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_, err = c.Writer.Write(jsonResponse)
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return nil, &fullTextResponse.Usage
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}
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func EmbeddingHandler(c *gin.Context, resp *http.Response) (*openai.ErrorWithStatusCode, *openai.Usage) {
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var baiduResponse EmbeddingResponse
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responseBody, err := io.ReadAll(resp.Body)
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if err != nil {
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return openai.ErrorWrapper(err, "read_response_body_failed", http.StatusInternalServerError), nil
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}
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err = resp.Body.Close()
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if err != nil {
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return openai.ErrorWrapper(err, "close_response_body_failed", http.StatusInternalServerError), nil
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}
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err = json.Unmarshal(responseBody, &baiduResponse)
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if err != nil {
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return openai.ErrorWrapper(err, "unmarshal_response_body_failed", http.StatusInternalServerError), nil
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}
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if baiduResponse.ErrorMsg != "" {
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return &openai.ErrorWithStatusCode{
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Error: openai.Error{
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Message: baiduResponse.ErrorMsg,
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Type: "baidu_error",
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Param: "",
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Code: baiduResponse.ErrorCode,
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},
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StatusCode: resp.StatusCode,
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}, nil
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}
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fullTextResponse := embeddingResponseBaidu2OpenAI(&baiduResponse)
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jsonResponse, err := json.Marshal(fullTextResponse)
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if err != nil {
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return openai.ErrorWrapper(err, "marshal_response_body_failed", http.StatusInternalServerError), nil
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}
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c.Writer.Header().Set("Content-Type", "application/json")
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c.Writer.WriteHeader(resp.StatusCode)
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_, err = c.Writer.Write(jsonResponse)
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return nil, &fullTextResponse.Usage
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}
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func GetAccessToken(apiKey string) (string, error) {
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if val, ok := baiduTokenStore.Load(apiKey); ok {
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var accessToken AccessToken
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if accessToken, ok = val.(AccessToken); ok {
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// soon this will expire
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if time.Now().Add(time.Hour).After(accessToken.ExpiresAt) {
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go func() {
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_, _ = getBaiduAccessTokenHelper(apiKey)
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}()
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}
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return accessToken.AccessToken, nil
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}
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}
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accessToken, err := getBaiduAccessTokenHelper(apiKey)
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if err != nil {
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return "", err
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}
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if accessToken == nil {
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return "", errors.New("GetAccessToken return a nil token")
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}
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return (*accessToken).AccessToken, nil
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}
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func getBaiduAccessTokenHelper(apiKey string) (*AccessToken, error) {
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parts := strings.Split(apiKey, "|")
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if len(parts) != 2 {
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return nil, errors.New("invalid baidu apikey")
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}
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req, err := http.NewRequest("POST", fmt.Sprintf("https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=%s&client_secret=%s",
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parts[0], parts[1]), nil)
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if err != nil {
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return nil, err
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}
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req.Header.Add("Content-Type", "application/json")
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req.Header.Add("Accept", "application/json")
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res, err := util.ImpatientHTTPClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer res.Body.Close()
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var accessToken AccessToken
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err = json.NewDecoder(res.Body).Decode(&accessToken)
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if err != nil {
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return nil, err
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}
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if accessToken.Error != "" {
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return nil, errors.New(accessToken.Error + ": " + accessToken.ErrorDescription)
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}
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if accessToken.AccessToken == "" {
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return nil, errors.New("getBaiduAccessTokenHelper get empty access token")
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}
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accessToken.ExpiresAt = time.Now().Add(time.Duration(accessToken.ExpiresIn) * time.Second)
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baiduTokenStore.Store(apiKey, accessToken)
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return &accessToken, nil
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}
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50
relay/channel/baidu/model.go
Normal file
50
relay/channel/baidu/model.go
Normal file
@@ -0,0 +1,50 @@
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package baidu
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import (
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"one-api/relay/channel/openai"
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"time"
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)
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type ChatResponse struct {
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Id string `json:"id"`
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Object string `json:"object"`
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Created int64 `json:"created"`
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Result string `json:"result"`
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IsTruncated bool `json:"is_truncated"`
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NeedClearHistory bool `json:"need_clear_history"`
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Usage openai.Usage `json:"usage"`
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BaiduError
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}
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type ChatStreamResponse struct {
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ChatResponse
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SentenceId int `json:"sentence_id"`
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IsEnd bool `json:"is_end"`
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}
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type EmbeddingRequest struct {
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Input []string `json:"input"`
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}
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type EmbeddingData struct {
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Object string `json:"object"`
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Embedding []float64 `json:"embedding"`
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Index int `json:"index"`
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}
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type EmbeddingResponse struct {
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Id string `json:"id"`
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Object string `json:"object"`
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Created int64 `json:"created"`
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Data []EmbeddingData `json:"data"`
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Usage openai.Usage `json:"usage"`
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BaiduError
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}
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type AccessToken struct {
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AccessToken string `json:"access_token"`
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Error string `json:"error,omitempty"`
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ErrorDescription string `json:"error_description,omitempty"`
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ExpiresIn int64 `json:"expires_in,omitempty"`
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ExpiresAt time.Time `json:"-"`
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}
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