- I have an express app which uses bullmq queues, schedulers and workers. Even after pressing Ctrl C I can still see the node process running inside my Activity manager but my server on the terminal shuts down. I know this because the bullmq task starts outputting console.log statements even after the server is down to the terminal.
This is what my server.js file looks like
// eslint-disable-next-line import/first
import http from 'http';
import { app } from './app';
import { sessionParser } from './session';
import { websocketServer } from './ws';
import 'jobs/repeatable';
const server = http.createServer(app);
server.on('upgrade', (request, socket, head) => {
sessionParser(request, {}, () => {
websocketServer.handleUpgrade(request, socket, head, (ws) => {
websocketServer.emit('connection', ws, request);
});
});
});
server.on('listening', () => {
websocketServer.emit('listening');
});
server.on('close', () => {
websocketServer.emit('close');
});
// https://stackoverflow.com/questions/18692536/node-js-server-close-event-doesnt-appear-to-fire
process.on('SIGINT', () => {
server.close();
});
export { server };
Notice that I have a SIGINT handler defined above. Is this the reason my jobs are not exiting? Do I have to manually close every queue, worker and scheduler inside my SIGINT? My jobs/repeatable.js file looks as shown below
const { scheduleJobs } = require('jobs');
if (process.env.ENABLE_JOB_QUEUE === 'true') {
scheduleJobs();
}
Here is my jobs.js file
import { scheduleDeleteExpiredTokensJob } from './delete-expired-tokens';
import { scheduleDeleteNullVotesJob } from './delete-null-votes';
export async function scheduleJobs() {
await scheduleDeleteExpiredTokensJob();
await scheduleDeleteNullVotesJob();
}
Here is my delete-expired-tokens.js file, other one is quite similar
import { processor as deleteExpiredTokensProcessor } from './processor';
import { queue as deleteExpiredTokensQueue } from './queue';
import { scheduler as deleteExpiredTokensScheduler } from './scheduler';
import { worker as deleteExpiredTokensWorker } from './worker';
export async function scheduleDeleteExpiredTokensJob() {
const jobId = process.env.QUEUE_DELETE_EXPIRED_TOKENS_JOB_ID;
const jobName = process.env.QUEUE_DELETE_EXPIRED_TOKENS_JOB_NAME;
await deleteExpiredTokensQueue.add(jobName, null, {
repeat: {
cron: process.env.QUEUE_DELETE_EXPIRED_TOKENS_FREQUENCY,
jobId,
},
});
}
export {
deleteExpiredTokensProcessor,
deleteExpiredTokensQueue,
deleteExpiredTokensScheduler,
deleteExpiredTokensWorker,
};
How do I shutdown bullmq task queues gracefully?
CodePudding user response:
You have to call the close()
method on the workers:
server.on('close', async () => {
websocketServer.emit('close');
// Close the workers
await worker.close()
});