fix: do not save same response body and content

service/aiproxy/relay/controller/helper.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"io"
 	"net/http"
 	"sync"
 	"time"
@@ -256,10 +255,9 @@ func DoHelper(
 
 	// 3. Handle error response
 	if isErrorHappened(resp) {
-		if err := handleErrorResponse(resp, &detail); err != nil {
-			return nil, &detail, err
-		}
-		return nil, &detail, utils.RelayErrorHandler(meta, resp)
+		relayErr := utils.RelayErrorHandler(meta, resp)
+		// detail.ResponseBody = relayErr.JSON()
+		return nil, &detail, relayErr
 	}
 
 	// 4. Handle success response
@@ -348,16 +346,6 @@ func doRequest(a adaptor.Adaptor, c *gin.Context, meta *meta.Meta, req *http.Req
 	return resp, nil
 }
 
-func handleErrorResponse(resp *http.Response, detail *model.RequestDetail) *relaymodel.ErrorWithStatusCode {
-	respBody, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return openai.ErrorWrapperWithMessage("read response body failed: "+err.Error(), "read_response_body_failed", http.StatusBadRequest)
-	}
-	detail.ResponseBody = conv.BytesToString(respBody)
-	resp.Body = io.NopCloser(bytes.NewReader(respBody))
-	return nil
-}
-
 func handleSuccessResponse(a adaptor.Adaptor, c *gin.Context, meta *meta.Meta, resp *http.Response, detail *model.RequestDetail) (*relaymodel.Usage, *relaymodel.ErrorWithStatusCode) {
 	buf := getBuffer()
 	defer putBuffer(buf)

service/aiproxy/relay/model/misc.go

@@ -36,3 +36,11 @@ type ErrorWithStatusCode struct {
 	Error      Error `json:"error"`
 	StatusCode int   `json:"-"`
 }
+
+func (e *ErrorWithStatusCode) JSON() string {
+	jsonBuf, err := json.Marshal(e)
+	if err != nil {
+		return ""
+	}
+	return conv.BytesToString(jsonBuf)
+}