@rocket.chat/apps-engine/deno-runtime/lib/metricsCollector.ts

The engine code for the Rocket.Chat Apps which manages, runs, translates, coordinates and all of that.

import { writeAll } from 'https://deno.land/std@0.216.0/io/write_all.ts';
import { Queue } from './messenger.ts';

export function collectMetrics() {
    return {
        pid: Deno.pid,
        queueSize: Queue.getCurrentSize(),
    }
};

const encoder = new TextEncoder();

/**
 * Sends metrics collected from the system via stderr
 */
export async function sendMetrics() {
    const metrics = collectMetrics();

    await writeAll(Deno.stderr, encoder.encode(JSON.stringify(metrics)));
}