feat: support claude convert to gemini

model/ability.go

@@ -136,7 +136,7 @@ func GetRandomSatisfiedChannel(group string, model string, retry int) (*Channel,
 			}
 		}
 	} else {
-		return nil, errors.New("channel not found")
+		return nil, nil
 	}
 	err = DB.First(&channel, "id = ?", channel.Id).Error
 	return &channel, err

model/channel_cache.go

@@ -130,7 +130,7 @@ func getRandomSatisfiedChannel(group string, model string, retry int) (*Channel,
 	channels := group2model2channels[group][model]
 
 	if len(channels) == 0 {
-		return nil, errors.New("channel not found")
+		return nil, nil
 	}
 
 	if len(channels) == 1 {

relay/channel/gemini/adaptor.go

@@ -9,6 +9,7 @@ import (
 	"one-api/common"
 	"one-api/dto"
 	"one-api/relay/channel"
+	"one-api/relay/channel/openai"
 	relaycommon "one-api/relay/common"
 	"one-api/relay/constant"
 	"one-api/setting/model_setting"
@@ -21,10 +22,13 @@ import (
 type Adaptor struct {
 }
 
-func (a *Adaptor) ConvertClaudeRequest(*gin.Context, *relaycommon.RelayInfo, *dto.ClaudeRequest) (any, error) {
-	//TODO implement me
-	panic("implement me")
-	return nil, nil
+func (a *Adaptor) ConvertClaudeRequest(c *gin.Context, info *relaycommon.RelayInfo, req *dto.ClaudeRequest) (any, error) {
+	adaptor := openai.Adaptor{}
+	oaiReq, err := adaptor.ConvertClaudeRequest(c, info, req)
+	if err != nil {
+		return nil, err
+	}
+	return a.ConvertOpenAIRequest(c, info, oaiReq.(*dto.GeneralOpenAIRequest))
 }
 
 func (a *Adaptor) ConvertAudioRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.AudioRequest) (io.Reader, error) {

relay/channel/gemini/relay-gemini.go

@@ -9,6 +9,7 @@ import (
 	"one-api/common"
 	"one-api/constant"
 	"one-api/dto"
+	"one-api/relay/channel/openai"
 	relaycommon "one-api/relay/common"
 	"one-api/relay/helper"
 	"one-api/service"
@@ -736,7 +737,7 @@ func streamResponseGeminiChat2OpenAI(geminiResponse *GeminiChatResponse) (*dto.C
 		choice := dto.ChatCompletionsStreamResponseChoice{
 			Index: int(candidate.Index),
 			Delta: dto.ChatCompletionsStreamResponseChoiceDelta{
-				Role: "assistant",
+				//Role: "assistant",
 			},
 		}
 		var texts []string
@@ -798,6 +799,27 @@ func streamResponseGeminiChat2OpenAI(geminiResponse *GeminiChatResponse) (*dto.C
 	return &response, isStop, hasImage
 }
 
+func handleStream(c *gin.Context, info *relaycommon.RelayInfo, resp *dto.ChatCompletionsStreamResponse) error {
+	streamData, err := common.Marshal(resp)
+	if err != nil {
+		return fmt.Errorf("failed to marshal stream response: %w", err)
+	}
+	err = openai.HandleStreamFormat(c, info, string(streamData), info.ChannelSetting.ForceFormat, info.ChannelSetting.ThinkingToContent)
+	if err != nil {
+		return fmt.Errorf("failed to handle stream format: %w", err)
+	}
+	return nil
+}
+
+func handleFinalStream(c *gin.Context, info *relaycommon.RelayInfo, resp *dto.ChatCompletionsStreamResponse) error {
+	streamData, err := common.Marshal(resp)
+	if err != nil {
+		return fmt.Errorf("failed to marshal stream response: %w", err)
+	}
+	openai.HandleFinalResponse(c, info, string(streamData), resp.Id, resp.Created, resp.Model, resp.GetSystemFingerprint(), resp.Usage, info.ShouldIncludeUsage)
+	return nil
+}
+
 func GeminiChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *http.Response) (*dto.Usage, *types.NewAPIError) {
 	// responseText := ""
 	id := helper.GetResponseID(c)
@@ -805,6 +827,8 @@ func GeminiChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *
 	var usage = &dto.Usage{}
 	var imageCount int
 
+	respCount := 0
+
 	helper.StreamScannerHandler(c, resp, info, func(data string) bool {
 		var geminiResponse GeminiChatResponse
 		err := common.UnmarshalJsonStr(data, &geminiResponse)
@@ -833,18 +857,31 @@ func GeminiChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *
 				}
 			}
 		}
-		err = helper.ObjectData(c, response)
+
+		if respCount == 0 {
+			// send first response
+			err = handleStream(c, info, helper.GenerateStartEmptyResponse(id, createAt, info.UpstreamModelName, nil))
+			if err != nil {
+				common.LogError(c, err.Error())
+			}
+		}
+
+		err = handleStream(c, info, response)
 		if err != nil {
 			common.LogError(c, err.Error())
 		}
 		if isStop {
-			response := helper.GenerateStopResponse(id, createAt, info.UpstreamModelName, constant.FinishReasonStop)
-			helper.ObjectData(c, response)
+			_ = handleStream(c, info, helper.GenerateStopResponse(id, createAt, info.UpstreamModelName, constant.FinishReasonStop))
 		}
+		respCount++
 		return true
 	})
 
-	var response *dto.ChatCompletionsStreamResponse
+	if respCount == 0 {
+		// 空补全，报错不计费
+		// empty response, throw an error
+		return nil, types.NewOpenAIError(errors.New("no response received from Gemini API"), types.ErrorCodeEmptyResponse, http.StatusInternalServerError)
+	}
 
 	if imageCount != 0 {
 		if usage.CompletionTokens == 0 {
@@ -855,14 +892,14 @@ func GeminiChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *
 	usage.PromptTokensDetails.TextTokens = usage.PromptTokens
 	usage.CompletionTokens = usage.TotalTokens - usage.PromptTokens
 
-	if info.ShouldIncludeUsage {
-		response = helper.GenerateFinalUsageResponse(id, createAt, info.UpstreamModelName, *usage)
-		err := helper.ObjectData(c, response)
-		if err != nil {
-			common.SysError("send final response failed: " + err.Error())
-		}
+	response := helper.GenerateFinalUsageResponse(id, createAt, info.UpstreamModelName, *usage)
+	err := handleFinalStream(c, info, response)
+	if err != nil {
+		common.SysError("send final response failed: " + err.Error())
 	}
-	helper.Done(c)
+	//if info.RelayFormat == relaycommon.RelayFormatOpenAI {
+	//	helper.Done(c)
+	//}
 	//resp.Body.Close()
 	return usage, nil
 }

relay/channel/openai/helper.go

@@ -14,7 +14,7 @@ import (
 )
 
 // 辅助函数
-func handleStreamFormat(c *gin.Context, info *relaycommon.RelayInfo, data string, forceFormat bool, thinkToContent bool) error {
+func HandleStreamFormat(c *gin.Context, info *relaycommon.RelayInfo, data string, forceFormat bool, thinkToContent bool) error {
 	info.SendResponseCount++
 	switch info.RelayFormat {
 	case relaycommon.RelayFormatOpenAI:
@@ -158,7 +158,7 @@ func handleLastResponse(lastStreamData string, responseId *string, createAt *int
 	return nil
 }
 
-func handleFinalResponse(c *gin.Context, info *relaycommon.RelayInfo, lastStreamData string,
+func HandleFinalResponse(c *gin.Context, info *relaycommon.RelayInfo, lastStreamData string,
 	responseId string, createAt int64, model string, systemFingerprint string,
 	usage *dto.Usage, containStreamUsage bool) {
 

relay/channel/openai/relay-openai.go

@@ -123,24 +123,11 @@ func OaiStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *http.Re
 	var toolCount int
 	var usage = &dto.Usage{}
 	var streamItems []string // store stream items
-	var forceFormat bool
-	var thinkToContent bool
-
-	if info.ChannelSetting.ForceFormat {
-		forceFormat = true
-	}
-
-	if info.ChannelSetting.ThinkingToContent {
-		thinkToContent = true
-	}
-
-	var (
-		lastStreamData string
-	)
+	var lastStreamData string
 
 	helper.StreamScannerHandler(c, resp, info, func(data string) bool {
 		if lastStreamData != "" {
-			err := handleStreamFormat(c, info, lastStreamData, forceFormat, thinkToContent)
+			err := HandleStreamFormat(c, info, lastStreamData, info.ChannelSetting.ForceFormat, info.ChannelSetting.ThinkingToContent)
 			if err != nil {
 				common.SysError("error handling stream format: " + err.Error())
 			}
@@ -161,7 +148,7 @@ func OaiStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *http.Re
 
 	if info.RelayFormat == relaycommon.RelayFormatOpenAI {
 		if shouldSendLastResp {
-			_ = sendStreamData(c, info, lastStreamData, forceFormat, thinkToContent)
+			_ = sendStreamData(c, info, lastStreamData, info.ChannelSetting.ForceFormat, info.ChannelSetting.ThinkingToContent)
 		}
 	}
 
@@ -180,7 +167,7 @@ func OaiStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *http.Re
 			}
 		}
 	}
-	handleFinalResponse(c, info, lastStreamData, responseId, createAt, model, systemFingerprint, usage, containStreamUsage)
+	HandleFinalResponse(c, info, lastStreamData, responseId, createAt, model, systemFingerprint, usage, containStreamUsage)
 
 	return usage, nil
 }

relay/helper/common.go

@@ -139,6 +139,24 @@ func GetLocalRealtimeID(c *gin.Context) string {
 	return fmt.Sprintf("evt_%s", logID)
 }
 
+func GenerateStartEmptyResponse(id string, createAt int64, model string, systemFingerprint *string) *dto.ChatCompletionsStreamResponse {
+	return &dto.ChatCompletionsStreamResponse{
+		Id:                id,
+		Object:            "chat.completion.chunk",
+		Created:           createAt,
+		Model:             model,
+		SystemFingerprint: systemFingerprint,
+		Choices: []dto.ChatCompletionsStreamResponseChoice{
+			{
+				Delta: dto.ChatCompletionsStreamResponseChoiceDelta{
+					Role:    "assistant",
+					Content: common.GetPointer(""),
+				},
+			},
+		},
+	}
+}
+
 func GenerateStopResponse(id string, createAt int64, model string, finishReason string) *dto.ChatCompletionsStreamResponse {
 	return &dto.ChatCompletionsStreamResponse{
 		Id:                id,

types/error.go

@@ -63,6 +63,7 @@ const (
 	ErrorCodeBadResponseStatusCode  ErrorCode = "bad_response_status_code"
 	ErrorCodeBadResponse            ErrorCode = "bad_response"
 	ErrorCodeBadResponseBody        ErrorCode = "bad_response_body"
+	ErrorCodeEmptyResponse          ErrorCode = "empty_response"
 
 	// sql error
 	ErrorCodeQueryDataError  ErrorCode = "query_data_error"