fix: fix getAndValidateTextRequest failed: unexpected end of JSON inp…

…ut (close #1043)

common/gin.go

@@ -8,12 +8,24 @@ import (
 	"strings"
 )
 
-func UnmarshalBodyReusable(c *gin.Context, v any) error {
+const KeyRequestBody = "key_request_body"
+
+func GetRequestBody(c *gin.Context) ([]byte, error) {
+	requestBody, _ := c.Get(KeyRequestBody)
+	if requestBody != nil {
+		return requestBody.([]byte), nil
+	}
 	requestBody, err := io.ReadAll(c.Request.Body)
 	if err != nil {
-		return err
+		return nil, err
 	}
-	err = c.Request.Body.Close()
+	_ = c.Request.Body.Close()
+	c.Set(KeyRequestBody, requestBody)
+	return requestBody.([]byte), nil
+}
+
+func UnmarshalBodyReusable(c *gin.Context, v any) error {
+	requestBody, err := GetRequestBody(c)
 	if err != nil {
 		return err
 	}

controller/relay.go

@@ -1,9 +1,11 @@
 package controller
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	"github.com/gin-gonic/gin"
+	"github.com/songquanpeng/one-api/common"
 	"github.com/songquanpeng/one-api/common/config"
 	"github.com/songquanpeng/one-api/common/helper"
 	"github.com/songquanpeng/one-api/common/logger"
@@ -13,6 +15,7 @@ import (
 	"github.com/songquanpeng/one-api/relay/controller"
 	"github.com/songquanpeng/one-api/relay/model"
 	"github.com/songquanpeng/one-api/relay/util"
+	"io"
 	"net/http"
 )
 
@@ -50,8 +53,8 @@ func Relay(c *gin.Context) {
 	go processChannelRelayError(ctx, channelId, channelName, bizErr)
 	requestId := c.GetString(logger.RequestIdKey)
 	retryTimes := config.RetryTimes
-	if !shouldRetry(bizErr.StatusCode) {
-		logger.Errorf(ctx, "relay error happen, but status code is %d, won't retry in this case", bizErr.StatusCode)
+	if !shouldRetry(c, bizErr.StatusCode) {
+		logger.Errorf(ctx, "relay error happen, status code is %d, won't retry in this case", bizErr.StatusCode)
 		retryTimes = 0
 	}
 	for i := retryTimes; i > 0; i-- {
@@ -65,6 +68,8 @@ func Relay(c *gin.Context) {
 			continue
 		}
 		middleware.SetupContextForSelectedChannel(c, channel, originalModel)
+		requestBody, err := common.GetRequestBody(c)
+		c.Request.Body = io.NopCloser(bytes.NewBuffer(requestBody))
 		bizErr = relay(c, relayMode)
 		if bizErr == nil {
 			return
@@ -85,7 +90,10 @@ func Relay(c *gin.Context) {
 	}
 }
 
-func shouldRetry(statusCode int) bool {
+func shouldRetry(c *gin.Context, statusCode int) bool {
+	if _, ok := c.Get("specific_channel_id"); ok {
+		return false
+	}
 	if statusCode == http.StatusTooManyRequests {
 		return true
 	}