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import * as kue from 'kue'
import { JobState, JobType } from '../../../shared/models'
import { logger } from '../../helpers/logger'
import { CONFIG, JOB_ATTEMPTS, JOB_COMPLETED_LIFETIME, JOB_CONCURRENCY } from '../../initializers'
import { Redis } from '../redis'
import { ActivitypubHttpBroadcastPayload, processActivityPubHttpBroadcast } from './handlers/activitypub-http-broadcast'
import { ActivitypubHttpFetcherPayload, processActivityPubHttpFetcher } from './handlers/activitypub-http-fetcher'
import { ActivitypubHttpUnicastPayload, processActivityPubHttpUnicast } from './handlers/activitypub-http-unicast'
import { EmailPayload, processEmail } from './handlers/email'
import { processVideoFile, VideoFilePayload } from './handlers/video-file'
type CreateJobArgument =
{ type: 'activitypub-http-broadcast', payload: ActivitypubHttpBroadcastPayload } |
{ type: 'activitypub-http-unicast', payload: ActivitypubHttpUnicastPayload } |
{ type: 'activitypub-http-fetcher', payload: ActivitypubHttpFetcherPayload } |
{ type: 'video-file', payload: VideoFilePayload } |
{ type: 'email', payload: EmailPayload }
const handlers: { [ id in JobType ]: (job: kue.Job) => Promise<any>} = {
'activitypub-http-broadcast': processActivityPubHttpBroadcast,
'activitypub-http-unicast': processActivityPubHttpUnicast,
'activitypub-http-fetcher': processActivityPubHttpFetcher,
'video-file': processVideoFile,
'email': processEmail
}
class JobQueue {
private static instance: JobQueue
private jobQueue: kue.Queue
private initialized = false
private jobRedisPrefix: string
private constructor () {}
async init () {
// Already initialized
if (this.initialized === true) return
this.initialized = true
this.jobRedisPrefix = 'q-' + CONFIG.WEBSERVER.HOST
this.jobQueue = kue.createQueue({
prefix: this.jobRedisPrefix,
redis: {
host: CONFIG.REDIS.HOSTNAME,
port: CONFIG.REDIS.PORT,
auth: CONFIG.REDIS.AUTH
}
})
this.jobQueue.setMaxListeners(15)
this.jobQueue.on('error', err => {
logger.error('Error in job queue.', { err })
process.exit(-1)
})
this.jobQueue.watchStuckJobs(5000)
await this.reactiveStuckJobs()
for (const handlerName of Object.keys(handlers)) {
this.jobQueue.process(handlerName, JOB_CONCURRENCY[handlerName], async (job, done) => {
try {
const res = await handlers[ handlerName ](job)
return done(null, res)
} catch (err) {
return done(err)
}
})
}
}
createJob (obj: CreateJobArgument, priority = 'normal') {
return new Promise((res, rej) => {
this.jobQueue
.create(obj.type, obj.payload)
.priority(priority)
.attempts(JOB_ATTEMPTS[obj.type])
.backoff({ delay: 60 * 1000, type: 'exponential' })
.save(err => {
if (err) return rej(err)
return res()
})
})
}
async listForApi (state: JobState, start: number, count: number, sort: 'ASC' | 'DESC'): Promise<kue.Job[]> {
const jobStrings = await Redis.Instance.listJobs(this.jobRedisPrefix, state, 'alpha', sort, start, count)
const jobPromises = jobStrings
.map(s => s.split('|'))
.map(([ , jobId ]) => this.getJob(parseInt(jobId, 10)))
return Promise.all(jobPromises)
}
count (state: JobState) {
return new Promise<number>((res, rej) => {
this.jobQueue[state + 'Count']((err, total) => {
if (err) return rej(err)
return res(total)
})
})
}
removeOldJobs () {
const now = new Date().getTime()
kue.Job.rangeByState('complete', 0, -1, 'asc', (err, jobs) => {
if (err) {
logger.error('Cannot get jobs when removing old jobs.', { err })
return
}
for (const job of jobs) {
if (now - job.created_at > JOB_COMPLETED_LIFETIME) {
job.remove()
}
}
})
}
private reactiveStuckJobs () {
const promises: Promise<any>[] = []
this.jobQueue.active((err, ids) => {
if (err) throw err
for (const id of ids) {
kue.Job.get(id, (err, job) => {
if (err) throw err
const p = new Promise((res, rej) => {
job.inactive(err => {
if (err) return rej(err)
return res()
})
})
promises.push(p)
})
}
})
return Promise.all(promises)
}
private getJob (id: number) {
return new Promise<kue.Job>((res, rej) => {
kue.Job.get(id, (err, job) => {
if (err) return rej(err)
return res(job)
})
})
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
// ---------------------------------------------------------------------------
export {
JobQueue
}
|
