@nestingjs/tracer

Tracer wraps incoming request using AsyncLocalStorage to hold or generate x-request-id using uuid v4 in context.

Installation

npm i @nestingjs/tracer

Usage

TracerExpressMiddleware

Apply TracerExpressMiddleware on routes:

import { MiddlewareConsumer, Module, NestModule } from '@nestjs/common';
import { TracerModule } from '@nestingjs/tracer';

@Module({
  imports: [
    TracerModule.forRoot({}),
  ],
})
export class AppModule implements NestModule {
  configure(consumer: MiddlewareConsumer) {
    consumer.apply(TracerExpressMiddleware).forRoutes('*');
  }
}

Injecting Tracer

import { Injectable } from '@nestjs/common';
import { InjectTracer, Tracer } from '@nestingjs/tracer';

@Injectable()
export class MyService {
  constructor(
    @InjectTracer() private readonly tracer: Tracer,
  ) {}

  customMethod(): string | undefiend {
    return this.tracer.id;
  }
}