Example of an provider that intercep http serros and log them.

nestjs-logger interceptor example

import {
  CallHandler,
  ExecutionContext,
  Injectable,
  Logger,
  NestInterceptor,
} from '@nestjs/common'
import { Observable } from 'rxjs'
import { tap } from 'rxjs/operators'
  
@Injectable()
export class LoggingInterceptor implements NestInterceptor {
  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
    const now = Date.now()
    const req = context.switchToHttp().getRequest()
  
    const method = req.method
    const url = req.url
  
    return next
      .handle()
      .pipe(
        tap(() =>
          Logger.log(
            `${method} ${url} ${Date.now() - now}ms`,
            context.getClass().name,
          ),
        ),
      )
  }
}