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: "0.5.100",
  33                 minVersion: "0.5.100"
  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                         cloudeebusService.isCreated = true;
 179                         resolver.fulfill(cloudeebusService, true);
 180                 }
 181
 182                 function ServiceAddedErrorCB(error) {
 183                         var errorStr = cloudeebus.getError(error);
 184                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 185                         resolver.reject(errorStr, true);
 186                 }
 187
 188                 var arglist = [
 189                     self.name,
 190                     serviceName
 191                     ];
 192
 193                 // call dbusSend with bus type, destination, object, message and arguments
 194                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 195         });
 196
 197         return promise;
 198 };
 199
 200
 201
 202 /*****************************************************************************/
 203 //Generic definition for an agent. An agent needs :
 204 //objPath : a DBus path to access it
 205 //jsHdl : a Javascript handler to process methods,
 206 //xml : the xml which describe interface/methods/signals...
 207 cloudeebus.Agent = function(objPath, jsHdl, xml) {
 208         this.xml = xml;
 209         this.objectPath = objPath;
 210         this.jsHdl = jsHdl;
 211         return this;
 212 };
 213
 214
 215 cloudeebus.Service = function(session, busConnection, name) {
 216         this.wampSession = session;
 217         this.busConnection = busConnection;
 218         this.name = name;
 219         this.agents = [];
 220         this.isCreated = false;
 221         return this;
 222 };
 223
 224
 225 cloudeebus.Service.prototype.remove = function() {
 226         var self = this;
 227
 228         var promise = new cloudeebus.Promise(function (resolver) {
 229                 function ServiceRemovedSuccessCB(serviceName) {
 230                         resolver.fulfill(serviceName, true);
 231                 }
 232
 233                 function ServiceRemovedErrorCB(error) {
 234                         var errorStr = cloudeebus.getError(error);
 235                         resolver.reject(errorStr, true);
 236                 }
 237
 238                 var arglist = [
 239                     self.name
 240                     ];
 241
 242                 // call dbusSend with bus type, destination, object, message and arguments
 243                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 244         });
 245
 246         return promise;
 247 };
 248
 249
 250 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 251
 252         var funcToCall = null;
 253
 254         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 255         // and a method named 'method'
 256         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 257                 objectJS.interfaceProxies[ifName][method]) {
 258                 funcToCall = objectJS.interfaceProxies[ifName][method];
 259         } else {
 260                 // retrieve the method directly from 'root' of objectJs
 261                 funcToCall = objectJS[method];
 262         }
 263
 264         return funcToCall;
 265 };
 266
 267
 268 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 269
 270         var service = this;
 271         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 272         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 273
 274         if (funcToCall == null)
 275                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 276         else {
 277                 agent.jsHdl.wrapperFunc[method] = function() {
 278                         var result;
 279                         var methodId = arguments[0];
 280                         var callDict = {};
 281                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 282                         eval("callDict = " + arguments[1]);
 283                         try {
 284                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 285                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 286                         }
 287                         catch (e) {
 288                                 var errorStr = cloudeebus.getError(e);
 289                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 290                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 291                         }
 292                 };
 293                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 294                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 295         }
 296 };
 297
 298
 299 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 300         var service = this;
 301         var methodExist = false;
 302
 303         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 304                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 305                         methodExist = true;
 306                 } else {
 307                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 308                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 309                         };
 310                 return;
 311         }
 312
 313         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 314                 agent.jsHdl[signal] = function() {
 315                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 316                 };
 317         else
 318                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 319 };
 320
 321
 322 cloudeebus.Service.prototype._createWrapper = function(agent) {
 323         var self = this;
 324         var parser = new DOMParser();
 325         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 326         var ifXml = xmlDoc.getElementsByTagName("interface");
 327         agent.jsHdl.wrapperFunc = {};
 328         agent.jsHdl.methodId = {};
 329         agent.jsHdl.methodId[agent.objectPath] = [];
 330         for (var i=0; i < ifXml.length; i++) {
 331                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 332                 var ifChild = ifXml[i].firstChild;
 333                 while (ifChild) {
 334                         if (ifChild.nodeName == "method") {
 335                                 var metName = ifChild.attributes.getNamedItem("name").value;
 336                                 self._addMethod(ifName, metName, agent);
 337                         }
 338                         if (ifChild.nodeName == "signal") {
 339                                 var metName = ifChild.attributes.getNamedItem("name").value;
 340                                 self._addSignal(ifName, metName, agent);
 341                         }
 342                         ifChild = ifChild.nextSibling;
 343                 }
 344         }
 345 };
 346
 347
 348 cloudeebus.Service.prototype.addAgent = function(agent) {
 349         var self = this;
 350
 351         var promise = new cloudeebus.Promise(function (resolver) {
 352                 function ServiceAddAgentSuccessCB(objPath) {
 353                         self.agents.push(agent);
 354                         try {
 355                                 self._createWrapper(agent);
 356                         }
 357                         catch (e) {
 358                                 var errorStr = cloudeebus.getError(e);
 359                                 cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 360                                 resolver.reject(errorStr, true);
 361                                 return;
 362                         }
 363                         resolver.fulfill(objPath, true);
 364                 }
 365
 366                 function ServiceAddAgenterrorCB(error) {
 367                         var errorStr = cloudeebus.getError(error);
 368                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 369                         self.promise.resolver.reject(errorStr, true);
 370                 }
 371
 372                 var arglist = [
 373                     self.name,
 374                     agent.objectPath,
 375                     agent.xml
 376                     ];
 377
 378                 // call dbusSend with bus type, destination, object, message and arguments
 379                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 380         });
 381
 382         return promise;
 383 };
 384
 385
 386 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 387         var objJs = agent.jsHdl;
 388         if (objJs.methodId[agent.objectPath]) {
 389                 while (objJs.methodId[agent.objectPath].length) {
 390                         try {
 391                                 this.wampSession.unsubscribe( objJs.methodId[agent.objectPath].pop() );
 392                         }
 393                         catch (e) {
 394                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 395                         }
 396                 }
 397                 objJs.methodId[agent.objectPath] = null;
 398         }
 399 };
 400
 401
 402 cloudeebus.Service.prototype.removeAgent = function(rmAgent) {
 403         var self = this;
 404
 405         var promise = new cloudeebus.Promise(function (resolver) {
 406                 function ServiceRemoveAgentSuccessCB(objectPath) {
 407                         // Searching agent in list
 408                         for (var idx in self.agents)
 409                                 if (self.agents[idx].objectPath == objectPath) {
 410                                         agent = self.agents[idx];
 411                                         break;
 412                                 }
 413
 414                         self.agents.splice(idx, 1);
 415                         self._deleteWrapper(agent);
 416                         resolver.fulfill(agent, true);
 417                 }
 418
 419                 function ServiceRemoveAgentErrorCB(error) {
 420                         var errorStr = cloudeebus.getError(error);
 421                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 422                         resolver.reject(errorStr, true);
 423                 }
 424
 425                 var arglist = [
 426                     rmAgent.objectPath
 427                     ];
 428
 429                 // call dbusSend with bus type, destination, object, message and arguments
 430                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 431         });
 432
 433         return promise;
 434 };
 435
 436
 437 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 438         var arglist = [
 439             methodId,
 440             callIndex,
 441             success,
 442             result
 443             ];
 444
 445         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 446 };
 447
 448
 449 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 450         var arglist = [
 451             objectPath,
 452             signalName,
 453             result
 454             ];
 455
 456         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 457 };
 458
 459
 460
 461 /*****************************************************************************/
 462
 463 function _processWrappers(wrappers, value) {
 464         for (var i=0; i<wrappers.length; i++)
 465                 wrappers[i](value);
 466 }
 467
 468
 469 function _processWrappersAsync(wrappers, value) {
 470         var taskid = -1;
 471         function processAsyncOnce() {
 472                 _processWrappers(wrappers, value);
 473                 clearInterval(taskid);
 474         }
 475         taskid = setInterval(processAsyncOnce, 200);
 476 }
 477
 478
 479
 480 /*****************************************************************************/
 481
 482 cloudeebus.PromiseResolver = function(promise) {
 483         this.promise = promise;
 484         this.resolved = null;
 485     return this;
 486 };
 487
 488
 489 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 490         if (this.resolved)
 491                 return;
 492
 493         var then = (value && value.then && value.then.apply) ? value.then : null;
 494         if (then) {
 495                 var self = this;
 496                 var fulfillCallback = function(arg) {
 497                         self.resolve(arg, true);
 498                 };
 499                 var rejectCallback = function(arg) {
 500                         self.reject(arg, true);
 501                 };
 502                 try {
 503                         then.apply(value, [fulfillCallback, rejectCallback]);
 504                 }
 505                 catch (e) {
 506                         this.reject(cloudeebus.getError(e), true);
 507                 }
 508         }
 509
 510         this.fulfill(value, sync);
 511 };
 512
 513
 514 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 515         if (this.resolved)
 516                 return;
 517
 518         var promise = this.promise;
 519         promise.state = "fulfilled";
 520         promise.result = value;
 521
 522         this.resolved = true;
 523         if (sync)
 524                 _processWrappers(promise._fulfillWrappers, value);
 525         else
 526                 _processWrappersAsync(promise._fulfillWrappers, value);
 527 };
 528
 529
 530 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 531         if (this.resolved)
 532                 return;
 533
 534         var promise = this.promise;
 535         promise.state = "rejected";
 536         promise.result = value;
 537
 538         this.resolved = true;
 539         if (sync)
 540                 _processWrappers(promise._rejectWrappers, value);
 541         else
 542                 _processWrappersAsync(promise._rejectWrappers, value);
 543 };
 544
 545
 546
 547 /*****************************************************************************/
 548
 549 cloudeebus.Promise = function(init) {
 550         this.state = "pending";
 551         this.result = null;
 552         this._fulfillWrappers = [];
 553         this._rejectWrappers = [];
 554         this.resolver = new cloudeebus.PromiseResolver(this);
 555         if (init) {
 556                 try {
 557                         init.apply(this, [this.resolver]);
 558                 }
 559                 catch (e) {
 560                         this.resolver.reject(cloudeebus.getError(e), true);
 561                 }
 562         }
 563     return this;
 564 };
 565
 566
 567 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 568         if (fulfillWrapper)
 569                 this._fulfillWrappers.push(fulfillWrapper);
 570         if (rejectWrapper)
 571                 this._rejectWrappers.push(rejectWrapper);
 572         if (this.state == "fulfilled")
 573                 _processWrappersAsync(this._fulfillWrappers, this.result);
 574         if (this.state == "rejected")
 575                 _processWrappersAsync(this._rejectWrappers, this.result);
 576 };
 577
 578
 579 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 580         var promise = new cloudeebus.Promise();
 581         var resolver = promise.resolver;
 582         var fulfillWrapper, rejectWrapper;
 583
 584         if (fulfillCB)
 585                 fulfillWrapper = function(arg) {
 586                         try {
 587                                 var value = fulfillCB.apply(promise, [arg]);
 588                                 resolver.resolve(value, true);
 589                         }
 590                         catch (e) {
 591                                 resolver.reject(cloudeebus.getError(e), true);
 592                         }
 593                 };
 594         else
 595                 fulfillWrapper = function(arg) {
 596                         resolver.fulfill(arg, true);
 597                 };
 598
 599         if (rejectCB)
 600                 rejectWrapper = function(arg) {
 601                         try {
 602                                 var value = rejectCB.apply(promise, [arg]);
 603                                 resolver.resolve(value, true);
 604                         }
 605                         catch (e) {
 606                                 resolver.reject(cloudeebus.getError(e), true);
 607                         }
 608                 };
 609         else
 610                 rejectWrapper = function(arg) {
 611                         resolver.reject(arg, true);
 612                 };
 613
 614         this.appendWrappers(fulfillWrapper,rejectWrapper);
 615         return promise;
 616 };
 617
 618
 619 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 620         return this.then(undefined,rejectCB);
 621 };
 622
 623
 624 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 625         this.appendWrappers(fulfillCB,rejectCB);
 626 };
 627
 628
 629 cloudeebus.Promise.resolve = function(value) {
 630         var promise = new cloudeebus.Promise();
 631         promise.resolver.resolve(value);
 632         return promise;
 633 };
 634
 635
 636 cloudeebus.Promise.fulfill = function(value) {
 637         var promise = new cloudeebus.Promise();
 638         promise.resolver.fulfill(value);
 639         return promise;
 640 };
 641
 642
 643 cloudeebus.Promise.reject = function(value) {
 644         var promise = new cloudeebus.Promise();
 645         promise.resolver.reject(value);
 646         return promise;
 647 };
 648
 649
 650 cloudeebus.Promise.any = function() {
 651         var promise = new cloudeebus.Promise();
 652         var resolver = promise.resolver;
 653         var fulfillCallback = function(arg) {
 654                 resolver.resolve(arg, true);
 655         };
 656         var rejectCallback = function(arg) {
 657                 resolver.reject(arg, true);
 658         };
 659         if (arguments.length == 0)
 660                 resolver.resolve(undefined, true);
 661         else
 662                 for (i in arguments)
 663                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 664         return promise;
 665 };
 666
 667
 668 cloudeebus.Promise.every = function() {
 669         var promise = new cloudeebus.Promise();
 670         var resolver = promise.resolver;
 671         var index = 0;
 672         var countdown = arguments.length;
 673         var args = new Array(countdown);
 674         var rejectCallback = function(arg) {
 675                 resolver.reject(arg, true);
 676         };
 677         if (arguments.length == 0)
 678                 resolver.resolve(undefined, true);
 679         else
 680                 for (i in arguments) {
 681                         var fulfillCallback = function(arg) {
 682                                 args[index] = arg;
 683                                 countdown--;
 684                                 if (countdown == 0)
 685                                         resolver.resolve(args, true);
 686                         };
 687                         index++;
 688                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 689                 }
 690
 691         return promise;
 692 };
 693
 694
 695 cloudeebus.Promise.some = function() {
 696         var promise = new cloudeebus.Promise();
 697         var resolver = promise.resolver;
 698         var index = 0;
 699         var countdown = arguments.length;
 700         var args = new Array(countdown);
 701         var fulfillCallback = function(arg) {
 702                 resolver.resolve(arg, true);
 703         };
 704         if (arguments.length == 0)
 705                 resolver.resolve(undefined, true);
 706         else
 707                 for (i in arguments) {
 708                         var rejectCallback = function(arg) {
 709                                 args[index] = arg;
 710                                 countdown--;
 711                                 if (countdown == 0)
 712                                         resolver.reject(args, true);
 713                         };
 714                         index++;
 715                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 716                 }
 717
 718         return promise;
 719 };
 720
 721
 722
 723 /*****************************************************************************/
 724
 725 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 726         this.wampSession = session;
 727         this.busConnection = busConnection;
 728         this.busName = busName;
 729         this.objectPath = objectPath;
 730         this.interfaceProxies = {};
 731         return this;
 732 };
 733
 734
 735 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 736         return this.interfaceProxies[ifName];
 737 };
 738
 739
 740 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 741
 742         var self = this;
 743
 744         function getAllPropertiesSuccessCB(props) {
 745                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 746                 for (var prop in props)
 747                         ifProxy[prop] = self[prop] = props[prop];
 748                 getAllPropertiesNextInterfaceCB();
 749         }
 750
 751         function getAllPropertiesNextInterfaceCB() {
 752                 self.propInterfaces.pop();
 753                 if (self.propInterfaces.length > 0)
 754                         self.callMethod("org.freedesktop.DBus.Properties",
 755                                 "GetAll",
 756                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 757                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 758                 else {
 759                         self.propInterfaces = null;
 760                         if (successCB)
 761                                 successCB(self);
 762                 }
 763         }
 764
 765         function introspectSuccessCB(str) {
 766                 var parser = new DOMParser();
 767                 var xmlDoc = parser.parseFromString(str, "text/xml");
 768                 var nodes = xmlDoc.getElementsByTagName("node");
 769                 self.childNodeNames = [];
 770                 var l = nodes.length;
 771                 //there will always be 1 node, the parent/head node
 772                 if(l > 1){
 773                         for(var i = 1; i < l; i++){
 774                                 self.childNodeNames.push(nodes[i].getAttribute("name"));
 775                         }
 776                 }
 777                 var interfaces = xmlDoc.getElementsByTagName("interface");
 778                 self.propInterfaces = [];
 779                 var supportDBusProperties = false;
 780                 for (var i=0; i < interfaces.length; i++) {
 781                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 782                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 783                         if (ifName == "org.freedesktop.DBus.Properties")
 784                                 supportDBusProperties = true;
 785                         var hasProperties = false;
 786                         var ifChild = interfaces[i].firstChild;
 787                         while (ifChild) {
 788                                 if (ifChild.nodeName == "method") {
 789                                         var nArgs = 0;
 790                                         var signature = "";
 791                                         var metChild = ifChild.firstChild;
 792                                         while (metChild) {
 793                                                 if (metChild.nodeName == "arg" &&
 794                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 795                                                                 signature += metChild.attributes.getNamedItem("type").value;
 796                                                                 nArgs++;
 797                                                 }
 798                                                 metChild = metChild.nextSibling;
 799                                         }
 800                                         var metName = ifChild.attributes.getNamedItem("name").value;
 801                                         if (!self[metName])
 802                                                 self._addMethod(ifName, metName, nArgs, signature);
 803                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 804                                 }
 805                                 else if (ifChild.nodeName == "property") {
 806                                         if (!hasProperties)
 807                                                 self.propInterfaces.push(ifName);
 808                                         hasProperties = true;
 809                                 }
 810                                 ifChild = ifChild.nextSibling;
 811                         }
 812                 }
 813                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 814                         self.callMethod("org.freedesktop.DBus.Properties",
 815                                 "GetAll",
 816                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 817                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 818                 }
 819                 else {
 820                         self.propInterfaces = null;
 821                         if (successCB)
 822                                 successCB(self);
 823                 }
 824         }
 825
 826         // call Introspect on self
 827         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 828 };
 829
 830
 831 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 832
 833         var self = this;
 834
 835         self[method] = function() {
 836                 var args = [];
 837                 for (var i=0; i < nArgs; i++ )
 838                         args.push(arguments[i]);
 839                 return self.callMethod(ifName, method, args, signature);
 840         };
 841 };
 842
 843
 844 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 845
 846         var self = this;
 847
 848         var promise = new cloudeebus.Promise(function (resolver) {
 849                 function callMethodSuccessCB(str) {
 850                         try { // calling dbus hook object function for un-translated types
 851                                 var result = eval(str);
 852                                 resolver.fulfill(result[0], true);
 853                         }
 854                         catch (e) {
 855                                 var errorStr = cloudeebus.getError(e);
 856                                 cloudeebus.log("Method callback exception: " + errorStr);
 857                                 resolver.reject(errorStr, true);
 858                         }
 859                 }
 860
 861                 function callMethodErrorCB(error) {
 862                         var errorStr = cloudeebus.getError(error);
 863                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 864                         resolver.reject(errorStr, true);
 865                 }
 866
 867                 var arglist = [
 868                         self.busConnection.name,
 869                         self.busName,
 870                         self.objectPath,
 871                         ifName,
 872                         method,
 873                         JSON.stringify(args)
 874                 ];
 875
 876                 // call dbusSend with bus type, destination, object, message and arguments
 877                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 878         });
 879
 880         return promise;
 881 };
 882
 883
 884 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 885
 886         var self = this;
 887
 888         function signalHandler(id, data) {
 889                 if (handlerCB) {
 890                         try { // calling dbus hook object function for un-translated types
 891                                 handlerCB.apply(self, eval(data));
 892                         }
 893                         catch (e) {
 894                                 var errorStr = cloudeebus.getError(e);
 895                                 cloudeebus.log("Signal handler exception: " + errorStr);
 896                                 if (errorCB)
 897                                         errorCB(errorStr);
 898                         }
 899                 }
 900         }
 901
 902         function connectToSignalSuccessCB(str) {
 903                 try {
 904                         self.wampSession.subscribe(str, signalHandler);
 905                 }
 906                 catch (e) {
 907                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 908                 }
 909         }
 910
 911         function connectToSignalErrorCB(error) {
 912                 var errorStr = cloudeebus.getError(error);
 913                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 914                 if (errorCB)
 915                         errorCB(errorStr);
 916         }
 917
 918         var arglist = [
 919                 self.busConnection.name,
 920                 self.busName,
 921                 self.objectPath,
 922                 ifName,
 923                 signal
 924         ];
 925
 926         // call dbusSend with bus type, destination, object, message and arguments
 927         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 928 };
 929
 930
 931 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 932         try {
 933                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 934         }
 935         catch (e) {
 936                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 937         }
 938 };