@adalo/metrics-js

Utility library for Prometheus metrics and HTTP request counting in Node.js applications.

Constructor

new MetricsClient({
  appName,            // defaults: process.env.METRICS_APP_NAME || 'unknown-app'
  dynoId,             // defaults: process.env.HOSTNAME || 'unknown-dyno'
  processType,        // defaults: process.env.BUILD_DYNO_PROCESS_TYPE || 'undefined_build_dyno_type'
  enabled,            // defaults: process.env.METRICS_ENABLED === 'true'
  logValues,          // defaults: process.env.METRICS_LOG_VALUES === 'true'
  pushgatewayUrl,     // defaults: process.env.METRICS_PUSHGATEWAY_URL || ''
  pushgatewayUser,    // defaults: process.env.METRICS_PUSHGATEWAY_USER || ''
  pushgatewayPassword,// defaults: process.env.METRICS_PUSHGATEWAY_PASSWORD || ''
  intervalSec         // defaults: process.env.METRICS_INTERVAL_SEC || 15
})

Example Usage

import { MetricsClient } from '@adalo/metrics-js'

const metrics = new MetricsClient({ appName: 'my-app', enabled: true })

// Express middleware
app.use(metrics.countHttpRequestMiddleware)


// Start metrics push
metrics.startPush()