middleware

nest-start/src/app.module.ts

@@ -1,11 +1,16 @@
-import { Module } from "@nestjs/common";
+import { MiddlewareConsumer, Module, NestModule } from "@nestjs/common";
 import { AppController } from "./app.controller";
 import { AppService } from "./app.service";
 import { CatsModule } from "./cats/cats.module";
+import { LoggerMiddleware } from "./logger/logger.middleware";
 
 @Module({
   imports: [CatsModule],
   controllers: [AppController],
   providers: [AppService],
 })
-export class AppModule {}
+export class AppModule implements NestModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer.apply(LoggerMiddleware).forRoutes("*");
+  }
+}

nest-start/src/logger/logger.middleware.spec.ts

@@ -0,0 +1,7 @@
+import { LoggerMiddleware } from './logger.middleware';
+
+describe('LoggerMiddleware', () => {
+  it('should be defined', () => {
+    expect(new LoggerMiddleware()).toBeDefined();
+  });
+});

nest-start/src/logger/logger.middleware.ts

@@ -0,0 +1,17 @@
+import { Injectable, Logger, NestMiddleware } from "@nestjs/common";
+import { Request, Response, NextFunction } from "express";
+
+@Injectable()
+export class LoggerMiddleware implements NestMiddleware {
+  private logger = new Logger("HTTP");
+
+  use(req: Request, res: Response, next: NextFunction) {
+    res.on("finish", () => {
+      this.logger.log(
+        `${req.ip} ${req.method} ${res.statusCode} ${req.originalUrl}`,
+      );
+    });
+
+    next();
+  }
+}