fix(antigravity): restore signature retry and base order
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song
@@ -769,6 +769,145 @@ func (s *AntigravityGatewayService) Forward(ctx context.Context, c *gin.Context,
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if resp.StatusCode >= 400 {
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respBody, _ := io.ReadAll(io.LimitReader(resp.Body, 2<<20))
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// 优先检测 thinking block 的 signature 相关错误（400）并重试一次：
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// Antigravity /v1internal 链路在部分场景会对 thought/thinking signature 做严格校验，
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// 当历史消息携带的 signature 不合法时会直接 400；去除 thinking 后可继续完成请求。
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if resp.StatusCode == http.StatusBadRequest && isSignatureRelatedError(respBody) {
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upstreamMsg := strings.TrimSpace(extractAntigravityErrorMessage(respBody))
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upstreamMsg = sanitizeUpstreamErrorMessage(upstreamMsg)
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logBody := s.settingService != nil && s.settingService.cfg != nil && s.settingService.cfg.Gateway.LogUpstreamErrorBody
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maxBytes := 2048
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if s.settingService != nil && s.settingService.cfg != nil && s.settingService.cfg.Gateway.LogUpstreamErrorBodyMaxBytes > 0 {
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maxBytes = s.settingService.cfg.Gateway.LogUpstreamErrorBodyMaxBytes
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}
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upstreamDetail := ""
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if logBody {
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upstreamDetail = truncateString(string(respBody), maxBytes)
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}
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appendOpsUpstreamError(c, OpsUpstreamErrorEvent{
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Platform: account.Platform,
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AccountID: account.ID,
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AccountName: account.Name,
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UpstreamStatusCode: resp.StatusCode,
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UpstreamRequestID: resp.Header.Get("x-request-id"),
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Kind: "signature_error",
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Message: upstreamMsg,
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Detail: upstreamDetail,
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})
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// Conservative two-stage fallback:
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// 1) Disable top-level thinking + thinking->text
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// 2) Only if still signature-related 400: also downgrade tool_use/tool_result to text.
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retryStages := []struct {
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name string
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strip func(*antigravity.ClaudeRequest) (bool, error)
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}{
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{name: "thinking-only", strip: stripThinkingFromClaudeRequest},
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{name: "thinking+tools", strip: stripSignatureSensitiveBlocksFromClaudeRequest},
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}
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for _, stage := range retryStages {
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retryClaudeReq := claudeReq
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retryClaudeReq.Messages = append([]antigravity.ClaudeMessage(nil), claudeReq.Messages...)
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stripped, stripErr := stage.strip(&retryClaudeReq)
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if stripErr != nil || !stripped {
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continue
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}
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log.Printf("Antigravity account %d: detected signature-related 400, retrying once (%s)", account.ID, stage.name)
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retryGeminiBody, txErr := antigravity.TransformClaudeToGeminiWithOptions(&retryClaudeReq, projectID, mappedModel, s.getClaudeTransformOptions(ctx))
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if txErr != nil {
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continue
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}
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retryResult, retryErr := antigravityRetryLoop(antigravityRetryLoopParams{
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ctx: ctx,
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prefix: prefix,
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account: account,
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proxyURL: proxyURL,
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accessToken: accessToken,
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action: action,
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body: retryGeminiBody,
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quotaScope: quotaScope,
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c: c,
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httpUpstream: s.httpUpstream,
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settingService: s.settingService,
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handleError: s.handleUpstreamError,
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})
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if retryErr != nil {
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appendOpsUpstreamError(c, OpsUpstreamErrorEvent{
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Platform: account.Platform,
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AccountID: account.ID,
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AccountName: account.Name,
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UpstreamStatusCode: 0,
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Kind: "signature_retry_request_error",
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Message: sanitizeUpstreamErrorMessage(retryErr.Error()),
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})
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log.Printf("Antigravity account %d: signature retry request failed (%s): %v", account.ID, stage.name, retryErr)
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continue
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}
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retryResp := retryResult.resp
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if retryResp.StatusCode < 400 {
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_ = resp.Body.Close()
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resp = retryResp
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respBody = nil
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break
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}
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retryBody, _ := io.ReadAll(io.LimitReader(retryResp.Body, 2<<20))
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_ = retryResp.Body.Close()
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if retryResp.StatusCode == http.StatusTooManyRequests {
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retryBaseURL := ""
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if retryResp.Request != nil && retryResp.Request.URL != nil {
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retryBaseURL = retryResp.Request.URL.Scheme + "://" + retryResp.Request.URL.Host
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}
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log.Printf("%s status=429 rate_limited base_url=%s retry_stage=%s body=%s", prefix, retryBaseURL, stage.name, truncateForLog(retryBody, 200))
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}
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kind := "signature_retry"
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if strings.TrimSpace(stage.name) != "" {
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kind = "signature_retry_" + strings.ReplaceAll(stage.name, "+", "_")
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}
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retryUpstreamMsg := strings.TrimSpace(extractAntigravityErrorMessage(retryBody))
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retryUpstreamMsg = sanitizeUpstreamErrorMessage(retryUpstreamMsg)
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retryUpstreamDetail := ""
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if logBody {
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retryUpstreamDetail = truncateString(string(retryBody), maxBytes)
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}
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appendOpsUpstreamError(c, OpsUpstreamErrorEvent{
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Platform: account.Platform,
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AccountID: account.ID,
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AccountName: account.Name,
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UpstreamStatusCode: retryResp.StatusCode,
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UpstreamRequestID: retryResp.Header.Get("x-request-id"),
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Kind: kind,
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Message: retryUpstreamMsg,
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Detail: retryUpstreamDetail,
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})
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// If this stage fixed the signature issue, we stop; otherwise we may try the next stage.
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if retryResp.StatusCode != http.StatusBadRequest || !isSignatureRelatedError(retryBody) {
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respBody = retryBody
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resp = &http.Response{
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StatusCode: retryResp.StatusCode,
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Header: retryResp.Header.Clone(),
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Body: io.NopCloser(bytes.NewReader(retryBody)),
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}
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break
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}
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// Still signature-related; capture context and allow next stage.
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respBody = retryBody
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resp = &http.Response{
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StatusCode: retryResp.StatusCode,
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Header: retryResp.Header.Clone(),
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Body: io.NopCloser(bytes.NewReader(retryBody)),
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}
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}
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}
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// 处理错误响应（重试后仍失败或不触发重试）
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if resp.StatusCode >= 400 {
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s.handleUpstreamError(ctx, prefix, account, resp.StatusCode, resp.Header, respBody, quotaScope)
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