Merge pull request #203 from peageon/feat/log

[최진수] : 서버 로거 구현

back/src/app.module.ts

@@ -6,6 +6,8 @@ import { AuthModule } from './modules/auth/auth.module';
 import typeOrmConfig from './config/ormconfig';
 import { JwtModule } from '@nestjs/jwt';
 import { UserModule } from './modules/user/user.module';
+import { APP_INTERCEPTOR } from '@nestjs/core';
+import { ControllerLoggerInterceptor } from './common/interceptors/log.interceptor';
 
 @Module({
   imports: [
@@ -17,6 +19,9 @@ import { UserModule } from './modules/user/user.module';
     })
   ],
   controllers: [AppController],
-  providers: [AppService]
+  providers: [
+    AppService,
+    { provide: APP_INTERCEPTOR, useClass: ControllerLoggerInterceptor }
+  ]
 })
 export class AppModule {}

back/src/common/interceptors/log.interceptor.ts

@@ -0,0 +1,28 @@
+import {
+  Injectable,
+  NestInterceptor,
+  ExecutionContext,
+  CallHandler,
+  Logger
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { tap } from 'rxjs/operators';
+
+@Injectable()
+export class ControllerLoggerInterceptor implements NestInterceptor {
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    const controllerName = context.getClass().name;
+    const logger = new Logger(controllerName);
+    const request = context.switchToHttp().getRequest();
+    const method = request.method;
+    const url = request.originalUrl;
+    const start = Date.now();
+    logger.verbose(`>>> IN: ${method} ${url}`);
+    return next.handle().pipe(
+      tap(() => {
+        const end = Date.now();
+        logger.verbose(`<<< OUT: ${method} ${url} ${end - start}ms`);
+      })
+    );
+  }
+}

back/src/main.ts

@@ -2,8 +2,10 @@ import { NestFactory } from '@nestjs/core';
 import { setupSwagger } from 'src/common/util/swagger';
 import { AppModule } from './app.module';
 import { ValidationPipe } from '@nestjs/common/pipes';
+import { Logger } from '@nestjs/common';
 
 async function bootstrap() {
+  const logger = new Logger('Main');
   const app = await NestFactory.create(AppModule);
   app.setGlobalPrefix('api');
   app.useGlobalPipes(
@@ -15,6 +17,7 @@ async function bootstrap() {
     })
   );
   setupSwagger(app);
-  await app.listen(3000);
+  logger.log(`Server is running on port ${process.env.PORT}`);
+  await app.listen(process.env.PORT);
 }
 bootstrap();