사용할 로그 레벨별 메세지 서비스 작성 및 모듈작성
logger.service.ts
import { ConsoleLogger, Injectable } from '@nestjs/common';
@Injectable()
export class LoggerService extends ConsoleLogger {
log(message: any, ...optionalParams: any[]) {
super.log(`${message}`, ...optionalParams);
}
error(message: any, ...optionalParams: any[]) {
super.error(` ${message}`, ...optionalParams);
}
warn(message: any, ...optionalParams: any[]) {
super.warn(` ${message}`, ...optionalParams);
}
debug(message: any, ...optionalParams: any[]) {
super.debug(`${message}`, ...optionalParams);
}
}
logger.module.ts
import { Module } from '@nestjs/common';
import { LoggerService } from './logger.service';
@Module({
providers: [LoggerService],
exports: [LoggerService],
})
export class LoggerModule {}
메인에 설정
main.ts
import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { ConfigService } from '@nestjs/config';
import { ValidationPipe } from '@nestjs/common';
import { initializeTransactionalContext } from 'typeorm-transactional';
// 추가된 코드
import { LoggerService } from './common/Logger/logger.service';
async function bootstrap() {
initializeTransactionalContext();
const app = await NestFactory.create(AppModule, { bufferLogs: true });// 로그설정
app.useLogger(app.get(LoggerService));// 서비스 설정
app.useGlobalPipes(
new ValidationPipe({
transform: true,
}),
);
const configService = app.get(ConfigService);
const port = configService.get<string>('PORT') as string;
const hostIP = configService.get<string>('HOST_IP') as string;
await app.listen(port, hostIP);
console.log(`Application is running on: ${await app.getUrl()}`);
}
bootstrap();
app api 에 적용
app.controller.ts
import ....
@Controller('routines')
export class RoutineController {
// 로그 헤더에 표시됨 -> [AppController] (message)
// 해당 컨트롤러에 맞게 변경
private readonly logger = new Logger(AppController.name);
constructor(private readonly routineService: RoutineService) {}
@Get()
@UseGuards(JwtAuthGuard)
getRoutine(@Body() getRoutineRequest: GetRoutineRequestDto, @Request() req: any) {
this.logger.log(`start getRoutine DTO : ${getRoutineRequest.name}`); // 로그 생성
return this.routineService.getRoutineByName(getRoutineRequest, req.user);
}
...
}
app.service.ts
import ...
@Injectable()
export class AppService {
// 해당 서비스에 맞게 변경 ex)PostService.name
private readonly logger = new Logger(AppService.name);
constructor(
....
) {}
async getRoutineByName(getRoutineRequest: GetRoutineRequestDto, user: User) {
const { name } = getRoutineRequest;
const routines = await this.routineRepository.findOne({where:{name}});
if(!routines){
this.logger.log(`Routines using name:'${name}' can not find`);
throw new BadRequestException(`Routines using name:'${name}' can not find`);
}
this.logger.log(`found routines using ${name}`);
return routines;
}
}
참고자료
https://docs.nestjs.com/techniques/logger
