default_udp.js

/**
 * In this example the default metrics are enabled using a udp connection.
 *
 * Launch the example
 * $ node ./examples/default_udp.js
 *
 * Then make a request to the `/with-metrics` enpoint to see the request stats.
 *
 * $ curl localhost:3000/with-metrics
 * $ curl -X POST -d '{ "test": true }' -H 'content-type: application/json' localhost:3000/with-metrics
 */

'use strict';

const fastify = require('fastify');
const plugin = require('..');
const { UdpMock, dumpMetric } = require('./fixtures/statsd');
const { start } = require('./util');

const udpPort = 10000;
const fastifyPort = 3000;

const mock = new UdpMock();
mock.on('metric', dumpMetric);

const app = fastify();

app.register(plugin, {
    client: {
        host: `udp://127.0.0.1:${udpPort}`,
        namespace: 'default_upd_test',
    },
}).then(() => {
    app.get(
        '/with-metrics',
        {
            config: {
                metrics: {
                    routeId: 'getMetrics',
                },
            },
        },
        async function () {
            return { metrics: true };
        }
    );

    app.post(
        '/with-metrics',
        {
            config: {
                metrics: {
                    routeId: 'postMetrics',
                },
            },
        },
        async function () {
            return { metrics: true };
        }
    );

    app.get('/no-metrics', async function () {
        return { metrics: false };
    });
});

start(app, mock, fastifyPort, udpPort);