Easy Tracer

A library to trace requests and responses functions in Nestjs. The main advantage to this library is to debug between request and response logs inside some environment or local machine. It is useful to trace data flows in microservices or monolithic.

Install

Run the following command

  npm i easy-tracer

Setup Module

First of all, you will need setup the module.

import { EasyTracerModule } from 'easy-tracer';

@Module({
  imports: [
    ...
    EasyTracerModule.forRoot({
      showLogs: true,
    }),
  ],
  controllers: [...],
  providers: [...],
})
export class AppModule {};

-	Description
showLogs	Boolean to enable or disable logs in root.

Trace a Controller

Trace decorator mainly works in controller to trace the request and response function.

import { Trace } from 'easy-tracer';

@Controller('...')
export class TestController {
  constructor(...) {}

  @Get('...')
  @Trace()
  async test(...) {
    return ...;
  }

Methods

The followins methos are:

    * @Trace(): Enable trace.
    * @Trace({ showLogs: false }): Disable trace.

Output

When trace is enable, you will find two logs in your console about the request and response function.

Formats	Example
Request	Request - functionName - MM/DD/YYYY HH:mm:ss -> [Params]
Response	Response - functionName - MM/DD/YYYY HH:mm:ss -> [Response]

Here the example:

//Example function
@Post()
@Trace()
async addEvent(@Body() dto: RegisterEvent) {
  await this.eventService.addEvent(dto);
  return { message: 'Event was added' };
}

//Tracing the function in console
[Nest] 24360  - 24/05/2023, 11:29:55 p. m. VERBOSE Request - addEvent - 05/24/2023 23:29:55 -> [{"priority":"HIGH","sent":false}]
[Nest] 24360  - 24/05/2023, 11:29:55 p. m. VERBOSE Response - addEvent - 05/24/2023 23:29:55 -> {"message":"Event was added"}