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var KarmaEventEmitter = require('../events').EventEmitter
var EventEmitter = require('events').EventEmitter
var q = require('q')
var log = require('../logger').create('launcher')
var BEING_CAPTURED = 1
var CAPTURED = 2
var BEING_KILLED = 3
var FINISHED = 4
var RESTARTING = 5
var BEING_FORCE_KILLED = 6
/**
* Base launcher that any custom launcher extends.
*/
var BaseLauncher = function (id, emitter) {
if (this.start) {
return
}
// TODO(vojta): figure out how to do inheritance with DI
Object.keys(EventEmitter.prototype).forEach(function (method) {
this[method] = EventEmitter.prototype[method]
}, this)
KarmaEventEmitter.call(this)
this.id = id
this.state = null
this.error = null
var self = this
var killingPromise
var previousUrl
this.start = function (url) {
previousUrl = url
this.error = null
this.state = BEING_CAPTURED
this.emit('start', url + '?id=' + this.id)
}
this.kill = function () {
// Already killed, or being killed.
if (killingPromise) {
return killingPromise
}
killingPromise = this.emitAsync('kill').then(function () {
self.state = FINISHED
})
this.state = BEING_KILLED
return killingPromise
}
this.forceKill = function () {
this.kill()
this.state = BEING_FORCE_KILLED
return killingPromise
}
this.restart = function () {
if (this.state === BEING_FORCE_KILLED) {
return
}
if (!killingPromise) {
killingPromise = this.emitAsync('kill')
}
killingPromise.then(function () {
if (self.state === BEING_FORCE_KILLED) {
self.state = FINISHED
} else {
killingPromise = null
log.debug('Restarting %s', self.name)
self.start(previousUrl)
}
})
self.state = RESTARTING
}
this.markCaptured = function () {
if (this.state === BEING_CAPTURED) {
this.state = CAPTURED
}
}
this.isCaptured = function () {
return this.state === CAPTURED
}
this.toString = function () {
return this.name
}
this._done = function (error) {
killingPromise = killingPromise || q()
this.error = this.error || error
this.emit('done')
if (this.error && this.state !== BEING_FORCE_KILLED && this.state !== RESTARTING) {
emitter.emit('browser_process_failure', this)
}
this.state = FINISHED
}
this.STATE_BEING_CAPTURED = BEING_CAPTURED
this.STATE_CAPTURED = CAPTURED
this.STATE_BEING_KILLED = BEING_KILLED
this.STATE_FINISHED = FINISHED
this.STATE_RESTARTING = RESTARTING
this.STATE_BEING_FORCE_KILLED = BEING_FORCE_KILLED
}
BaseLauncher.decoratorFactory = function (id, emitter) {
return function (launcher) {
BaseLauncher.call(launcher, id, emitter)
}
}
module.exports = BaseLauncher
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