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queue.js
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queue.js
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const logger = require('./logger')(module)
const EventEmitter = require('events').EventEmitter
const is = require('./is')
const enums = require('./enums')
const errorBooster = require('./error-booster')
const Job = require('./job')
const dbReview = require('./db-review')
const queueDb = require('./queue-db')
const queueProcess = require('./queue-process')
const queueAddJob = require('./queue-add-job')
const queueGetJob = require('./queue-get-job')
const queueFindJob = require('./queue-find-job')
const queueFindJobByName = require('./queue-find-job-by-name')
const queueInterruption = require('./queue-interruption')
const queueCancelJob = require('./queue-cancel-job')
const queueReanimateJob = require('./queue-reanimate-job')
const queueRemoveJob = require('./queue-remove-job')
const queueReset = require('./queue-reset')
const queueSummary = require('./queue-summary')
const queueStop = require('./queue-stop')
const queueDrop = require('./queue-drop')
const jobOptions = require('./job-options')
class Queue extends EventEmitter {
constructor (cxn, options) {
super()
logger('Queue Constructor', options)
options = options || {}
this._name = options.name || enums.options.name
// The following properties are Populated
// by the queueDb.attach(this, cxn) call below.
this._r = false
this._host = ''
this._port = 0
this._db = ''
this._id = ''
this._ready = false
this._queryRunOptions = options.queryRunOptions == null
? enums.options.queryRunOptions : options.queryRunOptions
this._masterInterval = options.masterInterval == null
? enums.options.masterInterval : options.masterInterval
this._databaseInitDelay = options.databaseInitDelay == null
? enums.options.databaseInitDelay : options.databaseInitDelay
this._jobOptions = jobOptions()
this._changeFeedCursor = false
this._paused = false
this._running = 0
this._changeFeed = options.changeFeed == null
? true : options.changeFeed
this._concurrency = options.concurrency > 1
? options.concurrency : enums.options.concurrency
this._limitJobLogs = options.limitJobLogs == null
? enums.options.limitJobLogs : options.limitJobLogs
this._removeFinishedJobs = options.removeFinishedJobs == null
? enums.options.removeFinishedJobs : options.removeFinishedJobs
this._handler = false
queueDb.attach(this, cxn)
}
get name () { return this._name }
get id () { return this._id }
get host () { return this._host }
get port () { return this._port }
get db () { return this._db }
get r () { return this._r }
get changeFeed () { return this._changeFeed }
get master () { return this._masterInterval > 0 }
get masterInterval () { return this._masterInterval }
get jobOptions () { return this._jobOptions }
get limitJobLogs () { return this._limitJobLogs }
get removeFinishedJobs () { return this._removeFinishedJobs }
get running () { return this._running }
get concurrency () { return this._concurrency }
get paused () { return this._paused }
get idle () { return this._running < 1 }
set jobOptions (options) {
logger('set jobOptions', options)
this._jobOptions = jobOptions(options, this._jobOptions)
}
set concurrency (value) {
logger('set concurrency', value)
if (!is.integer(value) || value < 1) {
const err = new Error(enums.message.concurrencyInvalid)
err.queueId = this.id
logger('concurrency', this.id, err)
this.emit(enums.status.error, err)
return
}
this._concurrency = value
}
createJob (jobData) {
logger('createJob', jobData)
jobData = jobData == null ? this.jobOptions : jobData
return new Job(this, jobData)
}
addJob (job) {
logger('addJob', job)
return this.ready().then(() => {
return queueAddJob(this, job)
}).catch(errorBooster(this, logger, 'addJob'))
}
getJob (jobOrId) {
logger('getJob', jobOrId)
return this.ready().then(() => {
return queueGetJob(this, jobOrId)
}).catch(errorBooster(this, logger, 'getJob'))
}
findJob (predicate, raw) {
logger('findJob', predicate, raw)
return this.ready().then(() => {
return queueFindJob(this, predicate, raw)
}).catch(errorBooster(this, logger, 'findJob'))
}
findJobByName (name, raw) {
logger('findJobByName', name, raw)
return this.ready().then(() => {
return queueFindJobByName(this, name, raw)
}).catch(errorBooster(this, logger, 'findJobByName'))
}
containsJobByName (name) {
logger('containsJobByName', name)
return this.ready().then(() => {
return queueFindJobByName(this, name, true)
}).then((namedJobs) => {
return namedJobs.length > 0
}).catch(errorBooster(this, logger, 'containsJobByName'))
}
cancelJob (jobOrId, reason) {
logger('cancelJob', jobOrId, reason)
return this.ready().then(() => {
return queueCancelJob(this, jobOrId, reason)
}).catch(errorBooster(this, logger, 'cancelJob'))
}
reanimateJob (jobOrId, dateEnable) {
logger('reanimateJob', jobOrId, dateEnable)
return this.ready().then(() => {
return queueReanimateJob(this, jobOrId, dateEnable)
}).catch(errorBooster(this, logger, 'reanimateJob'))
}
removeJob (jobOrId) {
logger('removeJob', jobOrId)
return this.ready().then(() => {
return queueRemoveJob(this, jobOrId)
}).catch(errorBooster(this, logger, 'removeJob'))
}
process (handler) {
logger('process', handler)
return this.ready().then(() => {
return queueProcess.addHandler(this, handler)
}).catch(errorBooster(this, logger, 'process'))
}
review () {
logger('review')
return this.ready().then(() => {
return dbReview.runOnce(this)
}).catch(errorBooster(this, logger, 'review'))
}
summary () {
logger('summary')
return this.ready().then(() => {
return queueSummary(this)
}).catch(errorBooster(this, logger, 'summary'))
}
ready () {
logger('ready')
return this._ready
}
pause (global) {
logger(`pause`)
return this.ready().then(() => {
return queueInterruption.pause(this, global)
}).catch(errorBooster(this, logger, 'pause'))
}
resume (global) {
logger(`resume`)
return this.ready().then(() => {
return queueInterruption.resume(this, global)
}).catch(errorBooster(this, logger, 'resume'))
}
reset () {
logger('reset')
return this.ready().then(() => {
return queueReset(this)
}).catch(errorBooster(this, logger, 'reset'))
}
stop () {
logger('stop')
return queueStop(this).then(() => {
return queueDb.drain(this)
}).catch(errorBooster(this, logger, 'stop'))
}
drop () {
logger('drop')
return queueDrop(this)
.catch(errorBooster(this, logger, 'drop'))
}
}
// Make TypeScript compiler happy. Needed because Job is an abstract class.
Queue.Job = Job
module.exports = Queue