prom-client example

app.js

var express = require('express');
var client = require('prom-client');
var server = express();

var counter = new client.Counter('push_notification', 'yaelah gitu aja ga paham', ['type']);

server.get('/send', function(req, res){
    counter.inc({ type : 'android' })
    res.send('sent')
})

server.get('/metrics', function(req, res) {
	res.end(client.register.metrics());
});

server.listen(3000);