cloudeebus/cloudeebus.js

   1 /******************************************************************************
   2  * Copyright 2012 Intel Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *****************************************************************************/
  16
  17
  18
  19 /*****************************************************************************/
  20
  21 var dbus = { // hook object for dbus types not translated by python-json
  22                 Double: function(value, level) {
  23                         return value;
  24                 }
  25 };
  26
  27
  28
  29 /*****************************************************************************/
  30
  31 var cloudeebus = window.cloudeebus = {
  32                 version: "0.5.99",
  33                 minVersion: "0.3.2"
  34 };
  35
  36 cloudeebus.reset = function() {
  37         cloudeebus.sessionBus = null;
  38         cloudeebus.systemBus = null;
  39         cloudeebus.wampSession = null;
  40         cloudeebus.uri = null;
  41 };
  42
  43
  44 cloudeebus.log = function(msg) {
  45 };
  46
  47 cloudeebus.getError = function(error) {
  48         if (error.desc && error.uri)
  49                 return error.desc + " : " + error.uri; // Python exception (cloudeebus.py)
  50         if (error.desc)
  51                 return error.desc;
  52         if (error.uri)
  53                 return error.uri;
  54         if (error.name && error.message)
  55                 return error.name + " : " + error.message; // Javascript exception
  56         if (error.message)
  57                 return error.message;
  58         if (error.name)
  59                 return error.name;
  60         return error; // Autobahn error
  61 };
  62
  63 cloudeebus.versionCheck = function(version) {
  64         var ver = version.split(".");
  65         var min = cloudeebus.minVersion.split(".");
  66         for (var i=0; i<ver.length; i++) {
  67                 if (Number(ver[i]) > Number(min[i]))
  68                         return true;
  69                 if (Number(ver[i]) < Number(min[i]))
  70                         return false;
  71         }
  72         return true;
  73 };
  74
  75
  76 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  77         cloudeebus.reset();
  78         cloudeebus.uri = uri;
  79
  80         function onCloudeebusVersionCheckCB(version) {
  81                 if (cloudeebus.versionCheck(version)) {
  82                         cloudeebus.log("Connected to " + cloudeebus.uri);
  83                         if (successCB)
  84                                 successCB();
  85                 } else {
  86                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  87                         cloudeebus.log(errorMsg);
  88                         if (errorCB)
  89                                 errorCB(errorMsg);
  90                 }
  91         }
  92
  93         function onWAMPSessionAuthErrorCB(error) {
  94                 var errorStr = cloudeebus.getError(error);
  95                 cloudeebus.log("Authentication error: " + errorStr);
  96                 if (errorCB)
  97                         errorCB(errorStr);
  98         }
  99
 100         function onWAMPSessionAuthenticatedCB(permissions) {
 101                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
 102                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
 103                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
 104         }
 105
 106         function onWAMPSessionChallengedCB(challenge) {
 107                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
 108                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 109         }
 110
 111         function onWAMPSessionConnectedCB(session) {
 112                 cloudeebus.wampSession = session;
 113                 if (manifest)
 114                         cloudeebus.wampSession.authreq(
 115                                         manifest.name,
 116                                         {permissions: manifest.permissions,
 117                                                  services: manifest.services}
 118                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 119                 else
 120                         cloudeebus.wampSession.authreq().then(function() {
 121                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 122                                 }, onWAMPSessionAuthErrorCB);
 123         }
 124
 125         function onWAMPSessionErrorCB(code, reason) {
 126                 if (code == ab.CONNECTION_UNSUPPORTED) {
 127                         cloudeebus.log("Browser is not supported");
 128                 }
 129                 else {
 130                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 131                 }
 132                 if (errorCB)
 133                         errorCB(reason);
 134         }
 135
 136         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 137 };
 138
 139
 140 cloudeebus.SessionBus = function() {
 141         return cloudeebus.sessionBus;
 142 };
 143
 144
 145 cloudeebus.SystemBus = function() {
 146         return cloudeebus.systemBus;
 147 };
 148
 149
 150
 151 /*****************************************************************************/
 152
 153 cloudeebus.BusConnection = function(name, session) {
 154         this.name = name;
 155         this.wampSession = session;
 156         return this;
 157 };
 158
 159
 160 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 161         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 162         if (introspectCB)
 163                 proxy._introspect(introspectCB, errorCB);
 164         return proxy;
 165 };
 166
 167
 168 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 169         var self = this;
 170
 171         if (!serviceName)
 172                 serviceName = "";
 173
 174         var promise = new cloudeebus.Promise(function (resolver) {
 175                 var cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 176
 177                 function ServiceAddedSuccessCB(serviceName) {
 178                         try {
 179                                 cloudeebusService.isCreated = true;
 180                                 resolver.fulfill(cloudeebusService, true);
 181                         }
 182                         catch (e) {
 183                                 var errorStr = cloudeebus.getError(e);
 184                                 cloudeebus.log("Method callback exception: " + errorStr);
 185                                 resolver.reject(errorStr, true);
 186                         }
 187                 }
 188
 189                 function ServiceAddedErrorCB(error) {
 190                         var errorStr = cloudeebus.getError(error);
 191                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 192                         resolver.reject(errorStr, true);
 193                 }
 194
 195                 var arglist = [
 196                     self.name,
 197                     serviceName
 198                     ];
 199
 200                 // call dbusSend with bus type, destination, object, message and arguments
 201                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 202         });
 203
 204         return promise;
 205 };
 206
 207
 208
 209 /*****************************************************************************/
 210 //Generic definition for an agent. An agent needs :
 211 //srvDbusName : the DBus parent service
 212 //objPath : a DBus path to access it
 213 //jsHdl : a Javascript handler to process methods,
 214 //xml : the xml which describe interface/methods/signals...
 215 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 216         this.srvName = srvDbusName;
 217         this.xml = xml;
 218         this.objectPath = objPath;
 219         this.jsHdl = jsHdl;
 220         return this;
 221 };
 222
 223
 224 cloudeebus.Service = function(session, busConnection, name) {
 225         this.wampSession = session;
 226         this.busConnection = busConnection;
 227         this.name = name;
 228         this.agents = [];
 229         this.isCreated = false;
 230         return this;
 231 };
 232
 233
 234 cloudeebus.Service.prototype.remove = function() {
 235         var self = this;
 236
 237         var promise = new cloudeebus.Promise(function (resolver) {
 238                 function ServiceRemovedSuccessCB(serviceName) {
 239                         try {
 240                                 resolver.fulfill(serviceName, true);
 241                         }
 242                         catch (e) {
 243                                 var errorStr = cloudeebus.getError(e);
 244                                 cloudeebus.log("Method callback exception: " + errorStr);
 245                                 resolver.reject(errorStr, true);
 246                         }
 247                 }
 248
 249                 function ServiceRemovedErrorCB(error) {
 250                         var errorStr = cloudeebus.getError(error);
 251                         resolver.reject(errorStr, true);
 252                 }
 253
 254                 for (var idx in self.agents) {
 255                         if (self.agents[idx]) {
 256                                 self.removeAgent(self.agents[idx]);
 257                         }
 258                 }
 259
 260                 var arglist = [
 261                     self.name
 262                     ];
 263
 264                 // call dbusSend with bus type, destination, object, message and arguments
 265                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 266         });
 267
 268         return promise;
 269 };
 270
 271
 272 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 273
 274         var funcToCall = null;
 275
 276         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 277         // and a method named 'method'
 278         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 279                 objectJS.interfaceProxies[ifName][method]) {
 280                 funcToCall = objectJS.interfaceProxies[ifName][method];
 281         } else {
 282                 // retrieve the method directly from 'root' of objectJs
 283                 funcToCall = objectJS[method];
 284         }
 285
 286         return funcToCall;
 287 };
 288
 289
 290 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 291
 292         var service = this;
 293         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 294         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 295
 296         if (funcToCall == null)
 297                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 298         else {
 299                 agent.jsHdl.wrapperFunc[method] = function() {
 300                         var result;
 301                         var methodId = arguments[0];
 302                         var callDict = {};
 303                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 304                         eval("callDict = " + arguments[1]);
 305                         try {
 306                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 307                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 308                         }
 309                         catch (e) {
 310                                 var errorStr = cloudeebus.getError(e);
 311                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 312                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 313                         }
 314                 };
 315                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 316                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 317         }
 318 };
 319
 320
 321 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 322         var service = this;
 323         var methodExist = false;
 324
 325         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 326                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 327                         methodExist = true;
 328                 } else {
 329                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 330                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 331                         };
 332                 return;
 333         }
 334
 335         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 336                 agent.jsHdl[signal] = function() {
 337                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 338                 };
 339         else
 340                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 341 };
 342
 343
 344 cloudeebus.Service.prototype._createWrapper = function(agent) {
 345         var self = this;
 346         var parser = new DOMParser();
 347         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 348         var ifXml = xmlDoc.getElementsByTagName("interface");
 349         agent.jsHdl.wrapperFunc = {};
 350         agent.jsHdl.methodId = {};
 351         agent.jsHdl.methodId[agent.objectPath] = [];
 352         for (var i=0; i < ifXml.length; i++) {
 353                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 354                 var ifChild = ifXml[i].firstChild;
 355                 while (ifChild) {
 356                         if (ifChild.nodeName == "method") {
 357                                 var metName = ifChild.attributes.getNamedItem("name").value;
 358                                 self._addMethod(ifName, metName, agent);
 359                         }
 360                         if (ifChild.nodeName == "signal") {
 361                                 var metName = ifChild.attributes.getNamedItem("name").value;
 362                                 self._addSignal(ifName, metName, agent);
 363                         }
 364                         ifChild = ifChild.nextSibling;
 365                 }
 366         }
 367 };
 368
 369
 370 cloudeebus.Service.prototype.addAgent = function(agent) {
 371         var self = this;
 372
 373         var promise = new cloudeebus.Promise(function (resolver) {
 374                 function ServiceAddAgentSuccessCB(objPath) {
 375                         try { // calling dbus hook object function for un-translated types
 376                                 self.agents.push(agent);
 377                                 resolver.fulfill(objPath, true);
 378                         }
 379                         catch (e) {
 380                                 var errorStr = cloudeebus.getError(e);
 381                                 cloudeebus.log("Method callback exception: " + errorStr);
 382                                 resolver.reject(errorStr, true);
 383                         }
 384                 }
 385
 386                 function ServiceAddAgenterrorCB(error) {
 387                         var errorStr = cloudeebus.getError(error);
 388                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 389                         self.promise.resolver.reject(errorStr, true);
 390                 }
 391
 392                 try {
 393                         self._createWrapper(agent);
 394                 }
 395                 catch (e) {
 396                         var errorStr = cloudeebus.getError(e);
 397                         cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 398                         resolver.reject(errorStr, true);
 399                         return;
 400                 }
 401
 402                 var arglist = [
 403                     agent.objectPath,
 404                     agent.xml
 405                     ];
 406
 407                 // call dbusSend with bus type, destination, object, message and arguments
 408                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 409         });
 410
 411         return promise;
 412 };
 413
 414
 415 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 416         var objJs = agent.jsHdl;
 417         if (objJs.methodId[agent.objectPath]) {
 418                 while (objJs.methodId[agent.objectPath].length) {
 419                         try {
 420                                 this.wampSession.unsubscribe( objJs.methodId[agent.objectPath].pop() );
 421                         }
 422                         catch (e) {
 423                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 424                         }
 425                 }
 426                 objJs.methodId[agent.objectPath] = null;
 427         }
 428 };
 429
 430
 431 cloudeebus.Service.prototype.removeAgent = function(rmAgent) {
 432         var self = this;
 433
 434         var promise = new cloudeebus.Promise(function (resolver) {
 435                 function ServiceRemoveAgentSuccessCB(objectPath) {
 436                         // Searching agent in list
 437                         for (var idx in self.agents)
 438                                 if (self.agents[idx].objectPath == objectPath) {
 439                                         agent = self.agents[idx];
 440                                         break;
 441                                 }
 442
 443                         try { // calling dbus hook object function for un-translated types
 444                                 self.agents.splice(idx, 1);
 445                                 self._deleteWrapper(agent);
 446                                 resolver.fulfill(agent, true);
 447                         }
 448                         catch (e) {
 449                                 var errorStr = cloudeebus.getError(e);
 450                                 cloudeebus.log("Method callback exception: " + errorStr);
 451                                 resolver.reject(errorStr, true);
 452                         }
 453                 }
 454
 455                 function ServiceRemoveAgentErrorCB(error) {
 456                         var errorStr = cloudeebus.getError(error);
 457                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 458                         resolver.reject(errorStr, true);
 459                 }
 460
 461                 var arglist = [
 462                     rmAgent.objectPath
 463                     ];
 464
 465                 // call dbusSend with bus type, destination, object, message and arguments
 466                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 467         });
 468
 469         return promise;
 470 };
 471
 472
 473 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 474         var arglist = [
 475             methodId,
 476             callIndex,
 477             success,
 478             result
 479             ];
 480
 481         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 482 };
 483
 484
 485 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 486         var arglist = [
 487             objectPath,
 488             signalName,
 489             result
 490             ];
 491
 492         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 493 };
 494
 495
 496
 497 /*****************************************************************************/
 498
 499 function _processWrappers(wrappers, value) {
 500         for (var i=0; i<wrappers.length; i++)
 501                 wrappers[i](value);
 502 }
 503
 504
 505 function _processWrappersAsync(wrappers, value) {
 506         var taskid = -1;
 507         function processAsyncOnce() {
 508                 _processWrappers(wrappers, value);
 509                 clearInterval(taskid);
 510         }
 511         taskid = setInterval(processAsyncOnce, 200);
 512 }
 513
 514
 515
 516 /*****************************************************************************/
 517
 518 cloudeebus.PromiseResolver = function(promise) {
 519         this.promise = promise;
 520         this.resolved = null;
 521     return this;
 522 };
 523
 524
 525 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 526         if (this.resolved)
 527                 return;
 528
 529         var then = (value && value.then && value.then.apply) ? value.then : null;
 530         if (then) {
 531                 var self = this;
 532                 var fulfillCallback = function(arg) {
 533                         self.resolve(arg, true);
 534                 };
 535                 var rejectCallback = function(arg) {
 536                         self.reject(arg, true);
 537                 };
 538                 try {
 539                         then.apply(value, [fulfillCallback, rejectCallback]);
 540                 }
 541                 catch (e) {
 542                         this.reject(cloudeebus.getError(e), true);
 543                 }
 544         }
 545
 546         this.fulfill(value, sync);
 547 };
 548
 549
 550 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 551         if (this.resolved)
 552                 return;
 553
 554         var promise = this.promise;
 555         promise.state = "fulfilled";
 556         promise.result = value;
 557
 558         this.resolved = true;
 559         if (sync)
 560                 _processWrappers(promise._fulfillWrappers, value);
 561         else
 562                 _processWrappersAsync(promise._fulfillWrappers, value);
 563 };
 564
 565
 566 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 567         if (this.resolved)
 568                 return;
 569
 570         var promise = this.promise;
 571         promise.state = "rejected";
 572         promise.result = value;
 573
 574         this.resolved = true;
 575         if (sync)
 576                 _processWrappers(promise._rejectWrappers, value);
 577         else
 578                 _processWrappersAsync(promise._rejectWrappers, value);
 579 };
 580
 581
 582
 583 /*****************************************************************************/
 584
 585 cloudeebus.Promise = function(init) {
 586         this.state = "pending";
 587         this.result = null;
 588         this._fulfillWrappers = [];
 589         this._rejectWrappers = [];
 590         this.resolver = new cloudeebus.PromiseResolver(this);
 591         if (init) {
 592                 try {
 593                         init.apply(this, [this.resolver]);
 594                 }
 595                 catch (e) {
 596                         this.resolver.reject(cloudeebus.getError(e), true);
 597                 }
 598         }
 599     return this;
 600 };
 601
 602
 603 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 604         if (fulfillWrapper)
 605                 this._fulfillWrappers.push(fulfillWrapper);
 606         if (rejectWrapper)
 607                 this._rejectWrappers.push(rejectWrapper);
 608         if (this.state == "fulfilled")
 609                 _processWrappersAsync(this._fulfillWrappers, this.result);
 610         if (this.state == "rejected")
 611                 _processWrappersAsync(this._rejectWrappers, this.result);
 612 };
 613
 614
 615 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 616         var promise = new cloudeebus.Promise();
 617         var resolver = promise.resolver;
 618         var fulfillWrapper, rejectWrapper;
 619
 620         if (fulfillCB)
 621                 fulfillWrapper = function(arg) {
 622                         try {
 623                                 var value = fulfillCB.apply(promise, [arg]);
 624                                 resolver.resolve(value, true);
 625                         }
 626                         catch (e) {
 627                                 resolver.reject(cloudeebus.getError(e), true);
 628                         }
 629                 };
 630         else
 631                 fulfillWrapper = function(arg) {
 632                         resolver.fulfill(arg, true);
 633                 };
 634
 635         if (rejectCB)
 636                 rejectWrapper = function(arg) {
 637                         try {
 638                                 var value = rejectCB.apply(promise, [arg]);
 639                                 resolver.resolve(value, true);
 640                         }
 641                         catch (e) {
 642                                 resolver.reject(cloudeebus.getError(e), true);
 643                         }
 644                 };
 645         else
 646                 rejectWrapper = function(arg) {
 647                         resolver.reject(arg, true);
 648                 };
 649
 650         this.appendWrappers(fulfillWrapper,rejectWrapper);
 651         return promise;
 652 };
 653
 654
 655 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 656         return this.then(undefined,rejectCB);
 657 };
 658
 659
 660 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 661         this.appendWrappers(fulfillCB,rejectCB);
 662 };
 663
 664
 665 cloudeebus.Promise.resolve = function(value) {
 666         var promise = new cloudeebus.Promise();
 667         promise.resolver.resolve(value);
 668         return promise;
 669 };
 670
 671
 672 cloudeebus.Promise.fulfill = function(value) {
 673         var promise = new cloudeebus.Promise();
 674         promise.resolver.fulfill(value);
 675         return promise;
 676 };
 677
 678
 679 cloudeebus.Promise.reject = function(value) {
 680         var promise = new cloudeebus.Promise();
 681         promise.resolver.reject(value);
 682         return promise;
 683 };
 684
 685
 686 cloudeebus.Promise.any = function() {
 687         var promise = new cloudeebus.Promise();
 688         var resolver = promise.resolver;
 689         var fulfillCallback = function(arg) {
 690                 resolver.resolve(arg, true);
 691         };
 692         var rejectCallback = function(arg) {
 693                 resolver.reject(arg, true);
 694         };
 695         if (arguments.length == 0)
 696                 resolver.resolve(undefined, true);
 697         else
 698                 for (i in arguments)
 699                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 700         return promise;
 701 };
 702
 703
 704 cloudeebus.Promise.every = function() {
 705         var promise = new cloudeebus.Promise();
 706         var resolver = promise.resolver;
 707         var index = 0;
 708         var countdown = arguments.length;
 709         var args = new Array(countdown);
 710         var rejectCallback = function(arg) {
 711                 resolver.reject(arg, true);
 712         };
 713         if (arguments.length == 0)
 714                 resolver.resolve(undefined, true);
 715         else
 716                 for (i in arguments) {
 717                         var fulfillCallback = function(arg) {
 718                                 args[index] = arg;
 719                                 countdown--;
 720                                 if (countdown == 0)
 721                                         resolver.resolve(args, true);
 722                         };
 723                         index++;
 724                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 725                 }
 726
 727         return promise;
 728 };
 729
 730
 731 cloudeebus.Promise.some = function() {
 732         var promise = new cloudeebus.Promise();
 733         var resolver = promise.resolver;
 734         var index = 0;
 735         var countdown = arguments.length;
 736         var args = new Array(countdown);
 737         var fulfillCallback = function(arg) {
 738                 resolver.resolve(arg, true);
 739         };
 740         if (arguments.length == 0)
 741                 resolver.resolve(undefined, true);
 742         else
 743                 for (i in arguments) {
 744                         var rejectCallback = function(arg) {
 745                                 args[index] = arg;
 746                                 countdown--;
 747                                 if (countdown == 0)
 748                                         resolver.reject(args, true);
 749                         };
 750                         index++;
 751                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 752                 }
 753
 754         return promise;
 755 };
 756
 757
 758
 759 /*****************************************************************************/
 760
 761 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 762         this.wampSession = session;
 763         this.busConnection = busConnection;
 764         this.busName = busName;
 765         this.objectPath = objectPath;
 766         this.interfaceProxies = {};
 767         return this;
 768 };
 769
 770
 771 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 772         return this.interfaceProxies[ifName];
 773 };
 774
 775
 776 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 777
 778         var self = this;
 779
 780         function getAllPropertiesSuccessCB(props) {
 781                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 782                 for (var prop in props)
 783                         ifProxy[prop] = self[prop] = props[prop];
 784                 getAllPropertiesNextInterfaceCB();
 785         }
 786
 787         function getAllPropertiesNextInterfaceCB() {
 788                 self.propInterfaces.pop();
 789                 if (self.propInterfaces.length > 0)
 790                         self.callMethod("org.freedesktop.DBus.Properties",
 791                                 "GetAll",
 792                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 793                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 794                 else {
 795                         self.propInterfaces = null;
 796                         if (successCB)
 797                                 successCB(self);
 798                 }
 799         }
 800
 801         function introspectSuccessCB(str) {
 802                 var parser = new DOMParser();
 803                 var xmlDoc = parser.parseFromString(str, "text/xml");
 804                 var interfaces = xmlDoc.getElementsByTagName("interface");
 805                 self.propInterfaces = [];
 806                 var supportDBusProperties = false;
 807                 for (var i=0; i < interfaces.length; i++) {
 808                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 809                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 810                         if (ifName == "org.freedesktop.DBus.Properties")
 811                                 supportDBusProperties = true;
 812                         var hasProperties = false;
 813                         var ifChild = interfaces[i].firstChild;
 814                         while (ifChild) {
 815                                 if (ifChild.nodeName == "method") {
 816                                         var nArgs = 0;
 817                                         var signature = "";
 818                                         var metChild = ifChild.firstChild;
 819                                         while (metChild) {
 820                                                 if (metChild.nodeName == "arg" &&
 821                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 822                                                                 signature += metChild.attributes.getNamedItem("type").value;
 823                                                                 nArgs++;
 824                                                 }
 825                                                 metChild = metChild.nextSibling;
 826                                         }
 827                                         var metName = ifChild.attributes.getNamedItem("name").value;
 828                                         if (!self[metName])
 829                                                 self._addMethod(ifName, metName, nArgs, signature);
 830                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 831                                 }
 832                                 else if (ifChild.nodeName == "property") {
 833                                         if (!hasProperties)
 834                                                 self.propInterfaces.push(ifName);
 835                                         hasProperties = true;
 836                                 }
 837                                 ifChild = ifChild.nextSibling;
 838                         }
 839                 }
 840                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 841                         self.callMethod("org.freedesktop.DBus.Properties",
 842                                 "GetAll",
 843                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 844                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 845                 }
 846                 else {
 847                         self.propInterfaces = null;
 848                         if (successCB)
 849                                 successCB(self);
 850                 }
 851         }
 852
 853         // call Introspect on self
 854         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 855 };
 856
 857
 858 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 859
 860         var self = this;
 861
 862         self[method] = function() {
 863                 var args = [];
 864                 for (var i=0; i < nArgs; i++ )
 865                         args.push(arguments[i]);
 866                 return self.callMethod(ifName, method, args, signature);
 867         };
 868 };
 869
 870
 871 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 872
 873         var self = this;
 874
 875         var promise = new cloudeebus.Promise(function (resolver) {
 876                 function callMethodSuccessCB(str) {
 877                         try { // calling dbus hook object function for un-translated types
 878                                 var result = eval(str);
 879                                 resolver.fulfill(result[0], true);
 880                         }
 881                         catch (e) {
 882                                 var errorStr = cloudeebus.getError(e);
 883                                 cloudeebus.log("Method callback exception: " + errorStr);
 884                                 resolver.reject(errorStr, true);
 885                         }
 886                 }
 887
 888                 function callMethodErrorCB(error) {
 889                         var errorStr = cloudeebus.getError(error);
 890                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 891                         resolver.reject(errorStr, true);
 892                 }
 893
 894                 var arglist = [
 895                         self.busConnection.name,
 896                         self.busName,
 897                         self.objectPath,
 898                         ifName,
 899                         method,
 900                         JSON.stringify(args)
 901                 ];
 902
 903                 // call dbusSend with bus type, destination, object, message and arguments
 904                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 905         });
 906
 907         return promise;
 908 };
 909
 910
 911 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 912
 913         var self = this;
 914
 915         function signalHandler(id, data) {
 916                 if (handlerCB) {
 917                         try { // calling dbus hook object function for un-translated types
 918                                 handlerCB.apply(self, eval(data));
 919                         }
 920                         catch (e) {
 921                                 var errorStr = cloudeebus.getError(e);
 922                                 cloudeebus.log("Signal handler exception: " + errorStr);
 923                                 if (errorCB)
 924                                         errorCB(errorStr);
 925                         }
 926                 }
 927         }
 928
 929         function connectToSignalSuccessCB(str) {
 930                 try {
 931                         self.wampSession.subscribe(str, signalHandler);
 932                 }
 933                 catch (e) {
 934                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 935                 }
 936         }
 937
 938         function connectToSignalErrorCB(error) {
 939                 var errorStr = cloudeebus.getError(error);
 940                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 941                 if (errorCB)
 942                         errorCB(errorStr);
 943         }
 944
 945         var arglist = [
 946                 self.busConnection.name,
 947                 self.busName,
 948                 self.objectPath,
 949                 ifName,
 950                 signal
 951         ];
 952
 953         // call dbusSend with bus type, destination, object, message and arguments
 954         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 955 };
 956
 957
 958 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 959         try {
 960                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 961         }
 962         catch (e) {
 963                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 964         }
 965 };