perf(gateway): 优化热点路径并补齐高覆盖测试

backend/internal/service/ops_service.go

@@ -20,6 +20,22 @@ const (
 	opsMaxStoredErrorBodyBytes   = 20 * 1024
 )
 
+// PrepareOpsRequestBodyForQueue 在入队前对请求体执行脱敏与裁剪，返回可直接写入 OpsInsertErrorLogInput 的字段。
+// 该方法用于避免异步队列持有大块原始请求体，减少错误风暴下的内存放大风险。
+func PrepareOpsRequestBodyForQueue(raw []byte) (requestBodyJSON *string, truncated bool, requestBodyBytes *int) {
+	if len(raw) == 0 {
+		return nil, false, nil
+	}
+	sanitized, truncated, bytesLen := sanitizeAndTrimRequestBody(raw, opsMaxStoredRequestBodyBytes)
+	if sanitized != "" {
+		out := sanitized
+		requestBodyJSON = &out
+	}
+	n := bytesLen
+	requestBodyBytes = &n
+	return requestBodyJSON, truncated, requestBodyBytes
+}
+
 // OpsService provides ingestion and query APIs for the Ops monitoring module.
 type OpsService struct {
 	opsRepo     OpsRepository
@@ -132,12 +148,7 @@ func (s *OpsService) RecordError(ctx context.Context, entry *OpsInsertErrorLogIn
 
 	// Sanitize + trim request body (errors only).
 	if len(rawRequestBody) > 0 {
-		sanitized, truncated, bytesLen := sanitizeAndTrimRequestBody(rawRequestBody, opsMaxStoredRequestBodyBytes)
-		if sanitized != "" {
-			entry.RequestBodyJSON = &sanitized
-		}
-		entry.RequestBodyTruncated = truncated
-		entry.RequestBodyBytes = &bytesLen
+		entry.RequestBodyJSON, entry.RequestBodyTruncated, entry.RequestBodyBytes = PrepareOpsRequestBodyForQueue(rawRequestBody)
 	}
 
 	// Sanitize + truncate error_body to avoid storing sensitive data.