feat: 本地重试

controller/relay.go

@@ -1,21 +1,23 @@
 package controller
 
 import (
+	"bytes"
 	"fmt"
 	"github.com/gin-gonic/gin"
+	"io"
 	"log"
 	"net/http"
 	"one-api/common"
 	"one-api/dto"
+	"one-api/middleware"
+	"one-api/model"
 	"one-api/relay"
 	"one-api/relay/constant"
 	relayconstant "one-api/relay/constant"
 	"one-api/service"
-	"strconv"
 )
 
-func Relay(c *gin.Context) {
-	relayMode := constant.Path2RelayMode(c.Request.URL.Path)
+func relayHandler(c *gin.Context, relayMode int) *dto.OpenAIErrorWithStatusCode {
 	var err *dto.OpenAIErrorWithStatusCode
 	switch relayMode {
 	case relayconstant.RelayModeImagesGenerations:
@@ -29,33 +31,88 @@ func Relay(c *gin.Context) {
 	default:
 		err = relay.TextHelper(c)
 	}
-	if err != nil {
-		requestId := c.GetString(common.RequestIdKey)
-		retryTimesStr := c.Query("retry")
-		retryTimes, _ := strconv.Atoi(retryTimesStr)
-		if retryTimesStr == "" {
-			retryTimes = common.RetryTimes
+	return err
+}
+
+func Relay(c *gin.Context) {
+	relayMode := constant.Path2RelayMode(c.Request.URL.Path)
+	retryTimes := common.RetryTimes
+	requestId := c.GetString(common.RequestIdKey)
+	channelId := c.GetInt("channel_id")
+	group := c.GetString("group")
+	originalModel := c.GetString("original_model")
+	openaiErr := relayHandler(c, relayMode)
+	retryLogStr := fmt.Sprintf("重试：%d", channelId)
+	if openaiErr != nil {
+		go processChannelError(c, channelId, openaiErr)
+	} else {
+		retryTimes = 0
+	}
+	for i := 0; shouldRetry(c, channelId, openaiErr, retryTimes) && i < retryTimes; i++ {
+		channel, err := model.CacheGetRandomSatisfiedChannel(group, originalModel, i)
+		if err != nil {
+			common.LogError(c.Request.Context(), fmt.Sprintf("CacheGetRandomSatisfiedChannel failed: %s", err.Error()))
+			break
 		}
-		if retryTimes > 0 {
-			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s?retry=%d", c.Request.URL.Path, retryTimes-1))
-		} else {
-			if err.StatusCode == http.StatusTooManyRequests {
-				//err.Error.Message = "当前分组上游负载已饱和，请稍后再试"
-			}
-			err.Error.Message = common.MessageWithRequestId(err.Error.Message, requestId)
-			c.JSON(err.StatusCode, gin.H{
-				"error": err.Error,
-			})
+		channelId = channel.Id
+		retryLogStr += fmt.Sprintf("->%d", channel.Id)
+		common.LogInfo(c.Request.Context(), fmt.Sprintf("using channel #%d to retry (remain times %d)", channel.Id, i))
+		middleware.SetupContextForSelectedChannel(c, channel, originalModel)
+
+		requestBody, err := common.GetRequestBody(c)
+		c.Request.Body = io.NopCloser(bytes.NewBuffer(requestBody))
+		openaiErr = relayHandler(c, relayMode)
+		if openaiErr != nil {
+			go processChannelError(c, channelId, openaiErr)
 		}
-		channelId := c.GetInt("channel_id")
-		autoBan := c.GetBool("auto_ban")
-		common.LogError(c.Request.Context(), fmt.Sprintf("relay error (channel #%d): %s", channelId, err.Error.Message))
-		// https://platform.openai.com/docs/guides/error-codes/api-errors
-		if service.ShouldDisableChannel(&err.Error, err.StatusCode) && autoBan {
-			channelId := c.GetInt("channel_id")
-			channelName := c.GetString("channel_name")
-			service.DisableChannel(channelId, channelName, err.Error.Message)
+	}
+	common.LogInfo(c.Request.Context(), retryLogStr)
+
+	if openaiErr != nil {
+		if openaiErr.StatusCode == http.StatusTooManyRequests {
+			openaiErr.Error.Message = "当前分组上游负载已饱和，请稍后再试"
 		}
+		openaiErr.Error.Message = common.MessageWithRequestId(openaiErr.Error.Message, requestId)
+		c.JSON(openaiErr.StatusCode, gin.H{
+			"error": openaiErr.Error,
+		})
+	}
+}
+
+func shouldRetry(c *gin.Context, channelId int, openaiErr *dto.OpenAIErrorWithStatusCode, retryTimes int) bool {
+	if openaiErr == nil {
+		return false
+	}
+	if retryTimes <= 0 {
+		return false
+	}
+	if _, ok := c.Get("specific_channel_id"); ok {
+		return false
+	}
+	if openaiErr.StatusCode == http.StatusTooManyRequests {
+		return true
+	}
+	if openaiErr.StatusCode/100 == 5 {
+		return true
+	}
+	if openaiErr.StatusCode == http.StatusBadRequest {
+		return false
+	}
+	if openaiErr.LocalError {
+		return false
+	}
+	if openaiErr.StatusCode/100 == 2 {
+		return false
+	}
+	return true
+}
+
+func processChannelError(c *gin.Context, channelId int, err *dto.OpenAIErrorWithStatusCode) {
+	autoBan := c.GetBool("auto_ban")
+	common.LogError(c.Request.Context(), fmt.Sprintf("relay error (channel #%d): %s", channelId, err.Error.Message))
+	if service.ShouldDisableChannel(&err.Error, err.StatusCode) && autoBan {
+		channelName := c.GetString("channel_name")
+		service.DisableChannel(channelId, channelName, err.Error.Message)
 	}
 }