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unleash.unleash/lib/metrics.js
2016-12-04 14:09:37 +01:00

20 lines
541 B
JavaScript

'use strict';
const events = require('./events');
exports.startMonitoring = (enable, eventBus) => {
if (!enable) {
return;
}
const client = require('prom-client');
const requestDuration = new client.Summary('http_request_duration_milliseconds', 'App response time', ['path', 'method', 'status'], {
percentiles: [0.1, 0.5, 0.9, 0.99],
});
eventBus.on(events.REQUEST_TIME, ({ path, method, time, statusCode }) => {
requestDuration.labels(path, method, statusCode).observe(time);
});
};