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import * as Deque from 'double-ended-queue';
import Xev from 'xev';
import { deliverQueue, inboxQueue } from '../queue';
const ev = new Xev();
const interval = 2000;
/**
* Report queue stats regularly
*/
export default function() {
const log = new Deque<any>();
ev.on('requestQueueStatsLog', x => {
ev.emit(`queueStatsLog:${x.id}`, log.toArray().slice(0, x.length || 50));
});
let activeDeliverJobs = 0;
let activeInboxJobs = 0;
deliverQueue.on('global:active', () => {
activeDeliverJobs++;
});
inboxQueue.on('global:active', () => {
activeInboxJobs++;
});
async function tick() {
const deliverJobCounts = await deliverQueue.getJobCounts();
const inboxJobCounts = await inboxQueue.getJobCounts();
const stats = {
deliver: {
activeSincePrevTick: activeDeliverJobs,
active: deliverJobCounts.active,
waiting: deliverJobCounts.waiting,
delayed: deliverJobCounts.delayed
},
inbox: {
activeSincePrevTick: activeInboxJobs,
active: inboxJobCounts.active,
waiting: inboxJobCounts.waiting,
delayed: inboxJobCounts.delayed
}
};
ev.emit('queueStats', stats);
log.unshift(stats);
if (log.length > 200) log.pop();
activeDeliverJobs = 0;
activeInboxJobs = 0;
}
tick();
setInterval(tick, interval);
}
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