修改服务启动逻辑

back/middlewares/monitoring.ts

@@ -0,0 +1,80 @@
+import { Request, Response, NextFunction } from 'express';
+import Logger from '../loaders/logger';
+import { performance } from 'perf_hooks';
+import { metricsService } from '../services/metrics';
+
+interface RequestMetrics {
+  method: string;
+  path: string;
+  duration: number;
+  statusCode: number;
+  timestamp: number;
+  platform?: string;
+}
+
+const requestMetrics: RequestMetrics[] = [];
+
+export const monitoringMiddleware = (
+  req: Request,
+  res: Response,
+  next: NextFunction,
+) => {
+  const start = performance.now();
+  const originalEnd = res.end;
+
+  res.end = function (chunk?: any, encoding?: any, cb?: any) {
+    const duration = performance.now() - start;
+    const metric: RequestMetrics = {
+      method: req.method,
+      path: req.path,
+      duration,
+      statusCode: res.statusCode,
+      timestamp: Date.now(),
+      platform: req.platform,
+    };
+
+    requestMetrics.push(metric);
+    metricsService.record('http_request', duration, {
+      method: req.method,
+      path: req.path,
+      statusCode: res.statusCode.toString(),
+      ...(req.platform && { platform: req.platform }),
+    });
+
+    if (requestMetrics.length > 1000) {
+      requestMetrics.shift();
+    }
+
+    if (duration > 1000) {
+      Logger.warn(
+        `Slow request detected: ${req.method} ${
+          req.path
+        } took ${duration.toFixed(2)}ms`,
+      );
+    }
+
+    return originalEnd.call(this, chunk, encoding, cb);
+  };
+
+  next();
+};
+
+export const getMetrics = () => {
+  return {
+    totalRequests: requestMetrics.length,
+    averageDuration:
+      requestMetrics.reduce((acc, curr) => acc + curr.duration, 0) /
+      requestMetrics.length,
+    requestsByMethod: requestMetrics.reduce((acc, curr) => {
+      acc[curr.method] = (acc[curr.method] || 0) + 1;
+      return acc;
+    }, {} as Record<string, number>),
+    requestsByPlatform: requestMetrics.reduce((acc, curr) => {
+      if (curr.platform) {
+        acc[curr.platform] = (acc[curr.platform] || 0) + 1;
+      }
+      return acc;
+    }, {} as Record<string, number>),
+    recentRequests: requestMetrics.slice(-10),
+  };
+};