Logger for Structured Logging with Asynchronous Context Tracking (Stability: 2 - Stable) to log HTTP traffic in Nest.JS (Express.JS) in GKE

Enables structured logging for Nest.js application running in Google Cloud platform.

!Release
!License

Installation

``bash
npm install --save \
gc-json-logger \
gc-json-logger-express \
gc-json-logger-nestjs

yarn add \
gc-json-logger \
gc-json-logger-express \
gc-json-logger-nestjs
`

View in Google Cloud Monitoring

!Google Cloud Monitoring

Usage

$3

- ./main.ts
- ./demo.module.ts
- ./demo.controller.ts
- ./demo.controller.test.ts

$3

`shell
git clone https://github.com/igrek8/gc-json-logger-nestjs
cd gc-json-logger-nestjs
npm install
npm run dev
`

Log Structure

`jsonc
{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"Starting Nest application...","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"NestFactory"}}

{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"LoggerModule dependencies initialized","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"InstanceLoader"}}

{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"AppModule dependencies initialized","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"InstanceLoader"}}

{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"AppController {/}:","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"RoutesResolver"}}

{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"Mapped {/trace, POST} route","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"RouterExplorer"}}

{"severity":"INFO","time":"2022-10-08T00:00:00.000Z","message":"Nest application successfully started","logging.googleapis.com/operation":{"id":"app"},"meta":{"context":"NestApplication"}}

/ HTTP log and LoggerService use the same UUID in "logging.googleapis.com/operation" /
`

Use with jq

`bash
node ./server.js | jq -r '."logging.googleapis.com/operation".id as $id | { time, severity, $id, message } | join(" ")'
`

Trace Request-Response cycle

Trace-NestJS module adds X-Request-ID and X-Response-ID` headers that match operation id.