chpr-metrics

This utility library implements our standard statsd configuration

Requirements

Minimum Node.js version: 4

## Installation

npm install --save chpr-metrics

Configuration

This simple configuration allows you to send metrics to a single statds server

• METRICS_HOST
• METRICS_PORT
• METRICS_PREFIX (prepended to all metrics name)
• METRICS_SUFFIX (appended to all metrics name)
• METRICS_CACHE_DNS (set to "true" to activate caching, any other values disables dns caching)

Advanced configuration

If you need to send metrics to several destinations, you can use the METRICS_DESTINATIONS variable, which allows you to specify a list of destinations as a JSON array:

Complete example:

[{
  "METRICS_HOST": "host1.yourstats.com",
  "METRICS_PORT": "1234",
  "METRICS_PREFIX": "prefix1.",
  "METRICS_SUFFIX": ".suffix1"
}, {
  "METRICS_HOST": "your-other-host.com",
  "METRICS_PORT": "44444",
  "METRICS_PREFIX": "anotherPrefix.",
  "METRICS_SUFFIX": ".anotherSuffix"
}]

If you use this in combination with the individual configuration variables listed in the previous sections, it will send metrics to all directions.

Use

'use strict';

const metrics = require('chpr-metrics');

// Timing: sends a timing command with the specified milliseconds
metrics.timing('response_time', 42);

// Increment: Increments a stat by a value (default is 1)
metrics.increment('my_counter');

The exported object is the configured statds client: see https://github.com/sivy/node-statsd