@nsboot/logger

Description

log4js-node module for Nest

Installation

$ npm i --save @nsboot/log4js log4js

Quick Start

• import LoggerModule in your root module

import { Module } from '@nestjs/common';
import { LoggerModule } from '@nsboot/log4js';
@Module({
  imports: [
    LoggerModule.forRootAsync({
      path: 'logs',
      level: 'info',
    }),
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

• use LoggerService in your service

import { Injectable } from '@nestjs/common';
import { LoggerService, InjectLogger, ILogger, Logger } from '@nsboot/log4js';

@Injectable()
export class AppService {
  private logger: Logger;
  //must use @InjectLogger() to inject logger
  constructor(@InjectLogger() private readonly iLogger: ILogger) {
    this.logger = this.iLogger.getLogger(AppService.name);
  }
  getHello(): string {
    this.logger.info('getHello');
    return 'Hello World!';
  }
}

• or use @Log4j() decorator in your service

import { Injectable } from '@nestjs/common';
import { Logger, Log4j } from '@nsboot/logger';

@Injectable()
export class AppService {
  @Log4j()
  private logger: Logger;

  getHello(): string {
    this.logger.info('getHello');
    return 'Hello World!';
  }
}

Note: @Log4j() decorator will inject Logger instance to your service, so you can use this.logger to log. If you want to use @InjectLogger() decorator, you must use this.iLogger.getLogger() to get Logger instance.

Configuration

• Config

interface Config {
  path?: string;
  level?: string;
  // file name
  name?: string;
  // console show log
  console?: boolean;
}

Support

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License

@nsboot/logger is MIT licensed.