Prometheus for Nest

Introduction

@infra-node-kit/prometheus-nest is a node prometheus client for Nest framework. It it based on @infra-node-kit/prometheus-common.

Initial the metrics

// definition
// this method will call the prom-client collectDefaultMetrics and register the customMetrics
function initMetrics(options?: DefaultMetricsCollectorConfiguration): void;

import { initMetrics } from '@infra-node-kit/prometheus-nest'
initMetrics()

Use the module

import { PrometheusModule } from '@infra-node-kit/prometheus-nest'
@Module({
  imports: [PrometheusModule.forRoot()]
})e
export class AppModule{}

• custom the metrics path

import { PrometheusModule } from '@infra-node-kit/prometheus-nest'
@Module({
  imports: [PrometheusModule.forRoot({
     metricsPath: '/custom_metrics_path'
  })]
})

Use the middleware

middleware helps you collect the request metrics apiConcurrency and requestHistogram

import {PrometheusMiddleware} from '@infra-node-kit/prometheus-nest'
app.use(PrometheusMiddleware)

If you want customize the metrics label, you can create middleware by yourself and call the collectRequestMetrics.

More customization

can refer to @infra-node-kit/prometheus-common. this package include all the functions of it.