vnfmarket/src/main/webapp/vnfmarket/node_modules/karma/lib/launchers/base.js

   1 var KarmaEventEmitter = require('../events').EventEmitter
   2 var EventEmitter = require('events').EventEmitter
   3 var q = require('q')
   4 var log = require('../logger').create('launcher')
   5
   6 var BEING_CAPTURED = 1
   7 var CAPTURED = 2
   8 var BEING_KILLED = 3
   9 var FINISHED = 4
  10 var RESTARTING = 5
  11 var BEING_FORCE_KILLED = 6
  12
  13 /**
  14  * Base launcher that any custom launcher extends.
  15  */
  16 var BaseLauncher = function (id, emitter) {
  17   if (this.start) {
  18     return
  19   }
  20
  21   // TODO(vojta): figure out how to do inheritance with DI
  22   Object.keys(EventEmitter.prototype).forEach(function (method) {
  23     this[method] = EventEmitter.prototype[method]
  24   }, this)
  25   KarmaEventEmitter.call(this)
  26
  27   this.id = id
  28   this.state = null
  29   this.error = null
  30
  31   var self = this
  32   var killingPromise
  33   var previousUrl
  34
  35   this.start = function (url) {
  36     previousUrl = url
  37
  38     this.error = null
  39     this.state = BEING_CAPTURED
  40     this.emit('start', url + '?id=' + this.id)
  41   }
  42
  43   this.kill = function () {
  44     // Already killed, or being killed.
  45     if (killingPromise) {
  46       return killingPromise
  47     }
  48
  49     killingPromise = this.emitAsync('kill').then(function () {
  50       self.state = FINISHED
  51     })
  52
  53     this.state = BEING_KILLED
  54
  55     return killingPromise
  56   }
  57
  58   this.forceKill = function () {
  59     this.kill()
  60     this.state = BEING_FORCE_KILLED
  61
  62     return killingPromise
  63   }
  64
  65   this.restart = function () {
  66     if (this.state === BEING_FORCE_KILLED) {
  67       return
  68     }
  69
  70     if (!killingPromise) {
  71       killingPromise = this.emitAsync('kill')
  72     }
  73
  74     killingPromise.then(function () {
  75       if (self.state === BEING_FORCE_KILLED) {
  76         self.state = FINISHED
  77       } else {
  78         killingPromise = null
  79         log.debug('Restarting %s', self.name)
  80         self.start(previousUrl)
  81       }
  82     })
  83
  84     self.state = RESTARTING
  85   }
  86
  87   this.markCaptured = function () {
  88     if (this.state === BEING_CAPTURED) {
  89       this.state = CAPTURED
  90     }
  91   }
  92
  93   this.isCaptured = function () {
  94     return this.state === CAPTURED
  95   }
  96
  97   this.toString = function () {
  98     return this.name
  99   }
 100
 101   this._done = function (error) {
 102     killingPromise = killingPromise || q()
 103
 104     this.error = this.error || error
 105     this.emit('done')
 106
 107     if (this.error && this.state !== BEING_FORCE_KILLED && this.state !== RESTARTING) {
 108       emitter.emit('browser_process_failure', this)
 109     }
 110
 111     this.state = FINISHED
 112   }
 113
 114   this.STATE_BEING_CAPTURED = BEING_CAPTURED
 115   this.STATE_CAPTURED = CAPTURED
 116   this.STATE_BEING_KILLED = BEING_KILLED
 117   this.STATE_FINISHED = FINISHED
 118   this.STATE_RESTARTING = RESTARTING
 119   this.STATE_BEING_FORCE_KILLED = BEING_FORCE_KILLED
 120 }
 121
 122 BaseLauncher.decoratorFactory = function (id, emitter) {
 123   return function (launcher) {
 124     BaseLauncher.call(launcher, id, emitter)
 125   }
 126 }
 127
 128 module.exports = BaseLauncher