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: "0.5.1",
  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;
  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;
  56         if (error.message)
  57                 return error.message;
  58         return error;
  59 };
  60
  61 cloudeebus.versionCheck = function(version) {
  62         var ver = version.split(".");
  63         var min = cloudeebus.minVersion.split(".");
  64         for (var i=0; i<ver.length; i++) {
  65                 if (Number(ver[i]) > Number(min[i]))
  66                         return true;
  67                 if (Number(ver[i]) < Number(min[i]))
  68                         return false;
  69         }
  70         return true;
  71 };
  72
  73
  74 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  75         cloudeebus.reset();
  76         cloudeebus.uri = uri;
  77
  78         function onCloudeebusVersionCheckCB(version) {
  79                 if (cloudeebus.versionCheck(version)) {
  80                         cloudeebus.log("Connected to " + cloudeebus.uri);
  81                         if (successCB)
  82                                 successCB();
  83                 } else {
  84                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  85                         cloudeebus.log(errorMsg);
  86                         if (errorCB)
  87                                 errorCB(errorMsg);
  88                 }
  89         }
  90
  91         function onWAMPSessionAuthErrorCB(error) {
  92                 var errorStr = cloudeebus.getError(error);
  93                 cloudeebus.log("Authentication error: " + errorStr);
  94                 if (errorCB)
  95                         errorCB(errorStr);
  96         }
  97
  98         function onWAMPSessionAuthenticatedCB(permissions) {
  99                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
 100                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
 101                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
 102         }
 103
 104         function onWAMPSessionChallengedCB(challenge) {
 105                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
 106                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 107         }
 108
 109         function onWAMPSessionConnectedCB(session) {
 110                 cloudeebus.wampSession = session;
 111                 if (manifest)
 112                         cloudeebus.wampSession.authreq(
 113                                         manifest.name,
 114                                         {permissions: manifest.permissions}
 115                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 116                 else
 117                         cloudeebus.wampSession.authreq().then(function() {
 118                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 119                                 }, onWAMPSessionAuthErrorCB);
 120         }
 121
 122         function onWAMPSessionErrorCB(code, reason) {
 123                 if (code == ab.CONNECTION_UNSUPPORTED) {
 124                         cloudeebus.log("Browser is not supported");
 125                 }
 126                 else {
 127                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 128                 }
 129                 if (errorCB)
 130                         errorCB(reason);
 131         }
 132
 133         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 134 };
 135
 136
 137 cloudeebus.SessionBus = function() {
 138         return cloudeebus.sessionBus;
 139 };
 140
 141
 142 cloudeebus.SystemBus = function() {
 143         return cloudeebus.systemBus;
 144 };
 145
 146
 147
 148 /*****************************************************************************/
 149
 150 cloudeebus.BusConnection = function(name, session) {
 151         this.name = name;
 152         this.wampSession = session;
 153         return this;
 154 };
 155
 156
 157 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 158         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 159         if (introspectCB)
 160                 proxy._introspect(introspectCB, errorCB);
 161         return proxy;
 162 };
 163
 164
 165 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 166         var self = this;
 167
 168         var promise = new cloudeebus.Promise(function (resolver) {
 169           cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 170
 171                 function ServiceAddedSuccessCB(serviceName) {
 172                         try { // calling dbus hook object function for un-translated types
 173                                 cloudeebusService.isCreated = true;
 174                                 var result = [ cloudeebusService ];
 175                                 resolver.fulfill(result[0], true);
 176                         }
 177                         catch (e) {
 178                                 var errorStr = cloudeebus.getError(e);
 179                                 cloudeebus.log("Method callback exception: " + errorStr);
 180                                 resolver.reject(errorStr, true);
 181                         }
 182                 }
 183
 184                 function ServiceAddedErrorCB(error) {
 185                         var errorStr = cloudeebus.getError(error);
 186                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 187                         self.promise.resolver.reject(errorStr, true);
 188                 }
 189
 190                 var arglist = [
 191                     self.name,
 192                     serviceName
 193                     ];
 194
 195                 // call dbusSend with bus type, destination, object, message and arguments
 196                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 197         });
 198
 199         return promise;
 200 };
 201
 202
 203 /*****************************************************************************/
 204 //Generic definition for an agent. An agent need :
 205 //srvDbusName : the DBus parent service
 206 //objPath : a DBus path to access it
 207 //jsHdl : a Javascript handler to process methods,
 208 //xml : the xml which describe interface/methods/signals...
 209 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 210         this.srvName = srvDbusName;
 211         this.registered = false;
 212         this.xml = xml;
 213         this.objectPath = objPath;
 214         this.jsHdl = jsHdl;
 215         return this;
 216 };
 217
 218
 219 cloudeebus.Service = function(session, busConnection, name) {
 220         this.wampSession = session;
 221         this.busConnection = busConnection;
 222         this.name = name;
 223         this.agents = [];
 224         this.isCreated = false;
 225         return this;
 226 };
 227
 228 cloudeebus.Service.prototype.remove = function() {
 229         var self = this;
 230
 231         var promise = new cloudeebus.Promise(function (resolver) {
 232                 function ServiceRemovedSuccessCB(serviceName) {
 233                         try { // calling dbus hook object function for un-translated types
 234                                 var result = [ serviceName ];
 235                                 resolver.fulfill(result[0], true);
 236                         }
 237                         catch (e) {
 238                                 var errorStr = cloudeebus.getError(e);
 239                                 cloudeebus.log("Method callback exception: " + errorStr);
 240                                 resolver.reject(errorStr, true);
 241                         }
 242                 }
 243
 244                 function ServiceRemovedErrorCB(error) {
 245                         var errorStr = cloudeebus.getError(error);
 246                         cloudeebus.log("Error removing service : " + self.name + ", error: " + errorStr);
 247                         self.promise.resolver.reject(errorStr, true);
 248                 }
 249
 250                 for (var idx in self.agents) {
 251                         if (self.agents[idx]) {
 252                                 cloudeebus.log("Removing agent : " + JSON.stringify(self.agents[idx]));
 253                                 self.delAgent(self.agents[idx]);
 254                         }
 255                 }
 256
 257                 var arglist = [
 258                     self.name
 259                     ];
 260
 261                 // call dbusSend with bus type, destination, object, message and arguments
 262                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 263         });
 264
 265         return promise;
 266 };
 267
 268 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 269
 270         var funcToCall = null;
 271
 272         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 273         // and a method named 'method'
 274         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 275                 objectJS.interfaceProxies[ifName][method]) {
 276                 funcToCall = objectJS.interfaceProxies[ifName][method];
 277         } else {
 278                 // retrieve the method directly from 'root' of objectJs
 279                 funcToCall = objectJS[method];
 280         }
 281
 282         return funcToCall;
 283 };
 284
 285 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 286
 287         var service = this;
 288         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 289         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 290
 291         if (funcToCall == null)
 292                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 293         else {
 294                 agent.jsHdl.wrapperFunc[method] = function() {
 295                         var result;
 296                         var methodId = arguments[0];
 297                         var callDict = {};
 298                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 299                         eval("callDict = " + arguments[1]);
 300                         try {
 301                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 302                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 303                         }
 304                         catch (e) {
 305                                 var errorStr = cloudeebus.getError(e);
 306                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 307                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 308                         }
 309                 };
 310                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 311                 cloudeebus.log("subscribe " + methodId);
 312                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 313         }
 314 };
 315
 316 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 317         var service = this;
 318         var methodExist = false;
 319
 320         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 321                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 322                         methodExist = true;
 323                 } else {
 324                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 325                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 326                         };
 327                 return;
 328         }
 329
 330         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 331                 agent.jsHdl[signal] = function() {
 332                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 333                 };
 334         else
 335                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 336 };
 337
 338 cloudeebus.Service.prototype._createWrapper = function(agent) {
 339         var self = this;
 340         var parser = new DOMParser();
 341         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 342         var ifXml = xmlDoc.getElementsByTagName("interface");
 343         agent.jsHdl.wrapperFunc = [];
 344         agent.jsHdl.methodId = [];
 345         agent.jsHdl.methodId[agent.objectPath] = [];
 346         for (var i=0; i < ifXml.length; i++) {
 347                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 348                 var ifChild = ifXml[i].firstChild;
 349                 while (ifChild) {
 350                         if (ifChild.nodeName == "method") {
 351                                 var metName = ifChild.attributes.getNamedItem("name").value;
 352                                 self._addMethod(ifName, metName, agent);
 353                         }
 354                         if (ifChild.nodeName == "signal") {
 355                                 var metName = ifChild.attributes.getNamedItem("name").value;
 356                                 self._addSignal(ifName, metName, agent);
 357                         }
 358                         ifChild = ifChild.nextSibling;
 359                 }
 360         }
 361 };
 362
 363 cloudeebus.Service.prototype.addAgent = function(agent, successCB, errorCB) {
 364         var self = this;
 365
 366         function ServiceAddAgentSuccessCB(objPath) {
 367                 self.agents.push(agent);
 368                 agent.registered = true;
 369                 cloudeebus.log("Agent pushed : " + JSON.stringify(agent))
 370                 if (successCB) {
 371                         try {
 372                                 successCB(objPath);
 373                         }
 374                         catch (e) {
 375                                 alert("Exception adding agent " + agent.objectPath + " : " + cloudeebus.getError(e));
 376                         }
 377                 }
 378         }
 379
 380         try {
 381                 this._createWrapper(agent);
 382         }
 383         catch (e) {
 384                 var errorStr = cloudeebus.getError(e);
 385                 alert("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 386                 errorCB(errorStr);
 387                 return;
 388         }
 389
 390         var arglist = [
 391             agent.objectPath,
 392             agent.xml
 393             ];
 394
 395         // call dbusSend with bus type, destination, object, message and arguments
 396         this.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, errorCB);
 397 };
 398
 399 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 400         var objJs = agent.jsHdl;
 401         if (objJs.methodId[agent.objectPath]) {
 402                 for (var idx in objJs.methodId[agent.objectPath]) {
 403                         try {
 404                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 405                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 406                                 objJs.methodId[agent.objectPath][idx] = null;
 407                         }
 408                         catch (e) {
 409                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 410                         }
 411                 }
 412                 delete objJs.methodId[agent.objectPath];
 413         }
 414 };
 415
 416 cloudeebus.Service.prototype.delAgent = function(rmAgent, successCB, errorCB) {
 417         function ServiceDelAgentSuccessCB(agent) {
 418                 if (successCB) {
 419                         try {
 420                                 successCB(agent);
 421                         }
 422                         catch (e) {
 423                                 var errorStr = cloudeebus.getError(e);
 424                                 alert("Exception deleting agent " + rmAgent.objectPath + " : " + errorStr);
 425                                 errorCB(errorStr);
 426                         }
 427                 }
 428         }
 429
 430         try {
 431                 this._deleteWrapper(rmAgent);
 432         }
 433         catch (e) {
 434                 var errorStr = cloudeebus.getError(e);
 435                 alert("Exception deleting agent wrapper " + rmAgent.objectPath + " : " + errorStr);
 436                 errorCB(errorStr);
 437         }
 438
 439         var arglist = [
 440             rmAgent.objectPath
 441             ];
 442
 443         // call dbusSend with bus type, destination, object, message and arguments
 444         this.wampSession.call("serviceDelAgent", arglist).then(ServiceDelAgentSuccessCB, errorCB);
 445 };
 446
 447 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 448         var arglist = [
 449             methodId,
 450             callIndex,
 451             success,
 452             result
 453             ];
 454
 455         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 456 };
 457
 458 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 459         var arglist = [
 460             objectPath,
 461             signalName,
 462             result
 463             ];
 464
 465         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 466 };
 467
 468
 469
 470 /*****************************************************************************/
 471
 472 function _processWrappers(wrappers, value) {
 473         for (var i=0; i<wrappers.length; i++)
 474                 wrappers[i](value);
 475 }
 476
 477
 478 function _processWrappersAsync(wrappers, value) {
 479         var taskid = -1;
 480         function processAsyncOnce() {
 481                 _processWrappers(wrappers, value);
 482                 clearInterval(taskid);
 483         }
 484         taskid = setInterval(processAsyncOnce, 200);
 485 }
 486
 487
 488
 489 /*****************************************************************************/
 490
 491 cloudeebus.PromiseResolver = function(promise) {
 492         this.promise = promise;
 493         this.resolved = null;
 494     return this;
 495 };
 496
 497
 498 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 499         if (this.resolved)
 500                 return;
 501
 502         var then = (value && value.then && value.then.apply) ? value.then : null;
 503         if (then) {
 504                 var self = this;
 505                 var fulfillCallback = function(arg) {
 506                         self.resolve(arg, true);
 507                 };
 508                 var rejectCallback = function(arg) {
 509                         self.reject(arg, true);
 510                 };
 511                 try {
 512                         then.apply(value, [fulfillCallback, rejectCallback]);
 513                 }
 514                 catch (e) {
 515                         this.reject(cloudeebus.getError(e), true);
 516                 }
 517         }
 518
 519         this.fulfill(value, sync);
 520 };
 521
 522
 523 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 524         if (this.resolved)
 525                 return;
 526
 527         var promise = this.promise;
 528         promise.state = "fulfilled";
 529         promise.result = value;
 530
 531         this.resolved = true;
 532         if (sync)
 533                 _processWrappers(promise._fulfillWrappers, value);
 534         else
 535                 _processWrappersAsync(promise._fulfillWrappers, value);
 536 };
 537
 538
 539 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 540         if (this.resolved)
 541                 return;
 542
 543         var promise = this.promise;
 544         promise.state = "rejected";
 545         promise.result = value;
 546
 547         this.resolved = true;
 548         if (sync)
 549                 _processWrappers(promise._rejectWrappers, value);
 550         else
 551                 _processWrappersAsync(promise._rejectWrappers, value);
 552 };
 553
 554
 555
 556 /*****************************************************************************/
 557
 558 cloudeebus.Promise = function(init) {
 559         this.state = "pending";
 560         this.result = null;
 561         this._fulfillWrappers = [];
 562         this._rejectWrappers = [];
 563         this.resolver = new cloudeebus.PromiseResolver(this);
 564         if (init) {
 565                 try {
 566                         init.apply(this, [this.resolver]);
 567                 }
 568                 catch (e) {
 569                         this.resolver.reject(cloudeebus.getError(e), true);
 570                 }
 571         }
 572     return this;
 573 };
 574
 575
 576 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 577         if (fulfillWrapper)
 578                 this._fulfillWrappers.push(fulfillWrapper);
 579         if (rejectWrapper)
 580                 this._rejectWrappers.push(rejectWrapper);
 581         if (this.state == "fulfilled")
 582                 _processWrappersAsync(this._fulfillWrappers, this.result);
 583         if (this.state == "rejected")
 584                 _processWrappersAsync(this._rejectWrappers, this.result);
 585 };
 586
 587
 588 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 589         var promise = new cloudeebus.Promise();
 590         var resolver = promise.resolver;
 591         var fulfillWrapper, rejectWrapper;
 592
 593         if (fulfillCB)
 594                 fulfillWrapper = function(arg) {
 595                         try {
 596                                 var value = fulfillCB.apply(promise, [arg]);
 597                                 resolver.resolve(value, true);
 598                         }
 599                         catch (e) {
 600                                 resolver.reject(cloudeebus.getError(e), true);
 601                         }
 602                 };
 603         else
 604                 fulfillWrapper = function(arg) {
 605                         resolver.fulfill(arg, true);
 606                 };
 607
 608         if (rejectCB)
 609                 rejectWrapper = function(arg) {
 610                         try {
 611                                 var value = rejectCB.apply(promise, [arg]);
 612                                 resolver.resolve(value, true);
 613                         }
 614                         catch (e) {
 615                                 resolver.reject(cloudeebus.getError(e), true);
 616                         }
 617                 };
 618         else
 619                 rejectWrapper = function(arg) {
 620                         resolver.reject(arg, true);
 621                 };
 622
 623         this.appendWrappers(fulfillWrapper,rejectWrapper);
 624         return promise;
 625 };
 626
 627
 628 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 629         return this.then(undefined,rejectCB);
 630 };
 631
 632
 633 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 634         this.appendWrappers(fulfillCB,rejectCB);
 635 };
 636
 637
 638 cloudeebus.Promise.resolve = function(value) {
 639         var promise = new cloudeebus.Promise();
 640         promise.resolver.resolve(value);
 641         return promise;
 642 };
 643
 644
 645 cloudeebus.Promise.fulfill = function(value) {
 646         var promise = new cloudeebus.Promise();
 647         promise.resolver.fulfill(value);
 648         return promise;
 649 };
 650
 651
 652 cloudeebus.Promise.reject = function(value) {
 653         var promise = new cloudeebus.Promise();
 654         promise.resolver.reject(value);
 655         return promise;
 656 };
 657
 658
 659 cloudeebus.Promise.any = function() {
 660         var promise = new cloudeebus.Promise();
 661         var resolver = promise.resolver;
 662         var fulfillCallback = function(arg) {
 663                 resolver.resolve(arg, true);
 664         };
 665         var rejectCallback = function(arg) {
 666                 resolver.reject(arg, true);
 667         };
 668         if (arguments.length == 0)
 669                 resolver.resolve(undefined, true);
 670         else
 671                 for (i in arguments)
 672                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 673         return promise;
 674 };
 675
 676
 677 cloudeebus.Promise.every = function() {
 678         var promise = new cloudeebus.Promise();
 679         var resolver = promise.resolver;
 680         var index = 0;
 681         var countdown = arguments.length;
 682         var args = new Array(countdown);
 683         var rejectCallback = function(arg) {
 684                 resolver.reject(arg, true);
 685         };
 686         if (arguments.length == 0)
 687                 resolver.resolve(undefined, true);
 688         else
 689                 for (i in arguments) {
 690                         var fulfillCallback = function(arg) {
 691                                 args[index] = arg;
 692                                 countdown--;
 693                                 if (countdown == 0)
 694                                         resolver.resolve(args, true);
 695                         };
 696                         index++;
 697                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 698                 }
 699
 700         return promise;
 701 };
 702
 703
 704 cloudeebus.Promise.some = 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 fulfillCallback = function(arg) {
 711                 resolver.resolve(arg, true);
 712         };
 713         if (arguments.length == 0)
 714                 resolver.resolve(undefined, true);
 715         else
 716                 for (i in arguments) {
 717                         var rejectCallback = function(arg) {
 718                                 args[index] = arg;
 719                                 countdown--;
 720                                 if (countdown == 0)
 721                                         resolver.reject(args, true);
 722                         };
 723                         index++;
 724                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 725                 }
 726
 727         return promise;
 728 };
 729
 730
 731
 732 /*****************************************************************************/
 733
 734 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 735         this.wampSession = session;
 736         this.busConnection = busConnection;
 737         this.busName = busName;
 738         this.objectPath = objectPath;
 739         this.interfaceProxies = {};
 740         return this;
 741 };
 742
 743
 744 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 745         return this.interfaceProxies[ifName];
 746 };
 747
 748
 749 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 750
 751         var self = this;
 752
 753         function getAllPropertiesSuccessCB(props) {
 754                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 755                 for (var prop in props)
 756                         ifProxy[prop] = self[prop] = props[prop];
 757                 getAllPropertiesNextInterfaceCB();
 758         }
 759
 760         function getAllPropertiesNextInterfaceCB() {
 761                 self.propInterfaces.pop();
 762                 if (self.propInterfaces.length > 0)
 763                         self.callMethod("org.freedesktop.DBus.Properties",
 764                                 "GetAll",
 765                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 766                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 767                 else {
 768                         self.propInterfaces = null;
 769                         if (successCB)
 770                                 successCB(self);
 771                 }
 772         }
 773
 774         function introspectSuccessCB(str) {
 775                 var parser = new DOMParser();
 776                 var xmlDoc = parser.parseFromString(str, "text/xml");
 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(cloudeebus.getError(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 };