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; // error cloudeebus (from python)
  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         if (error.name)
  59                 return error.name;
  60         return error; // error from Autobahn
  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                 }
 120                 else
 121                         cloudeebus.wampSession.authreq().then(function() {
 122                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 123                                 }, onWAMPSessionAuthErrorCB);
 124         }
 125
 126         function onWAMPSessionErrorCB(code, reason) {
 127                 if (code == ab.CONNECTION_UNSUPPORTED) {
 128                         cloudeebus.log("Browser is not supported");
 129                 }
 130                 else {
 131                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 132                 }
 133                 if (errorCB)
 134                         errorCB(reason);
 135         }
 136
 137         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 138 };
 139
 140
 141 cloudeebus.SessionBus = function() {
 142         return cloudeebus.sessionBus;
 143 };
 144
 145
 146 cloudeebus.SystemBus = function() {
 147         return cloudeebus.systemBus;
 148 };
 149
 150
 151
 152 /*****************************************************************************/
 153
 154 cloudeebus.BusConnection = function(name, session) {
 155         this.name = name;
 156         this.wampSession = session;
 157         return this;
 158 };
 159
 160
 161 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 162         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 163         if (introspectCB)
 164                 proxy._introspect(introspectCB, errorCB);
 165         return proxy;
 166 };
 167
 168
 169 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 170         var self = this;
 171
 172         if (!serviceName)
 173                 serviceName = "";
 174
 175         var promise = new cloudeebus.Promise(function (resolver) {
 176                 var cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 177
 178                 function ServiceAddedSuccessCB(serviceName) {
 179                         try { // calling dbus hook object function for un-translated types
 180                                 cloudeebusService.isCreated = true;
 181                                 resolver.fulfill(cloudeebusService, true);
 182                         }
 183                         catch (e) {
 184                                 var errorStr = cloudeebus.getError(e);
 185                                 cloudeebus.log("Method callback exception: " + errorStr);
 186                                 resolver.reject(errorStr, true);
 187                         }
 188                 }
 189
 190                 function ServiceAddedErrorCB(error) {
 191                         var errorStr = cloudeebus.getError(error);
 192                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 193                         resolver.reject(errorStr, true);
 194                 }
 195
 196                 var arglist = [
 197                     self.name,
 198                     serviceName
 199                     ];
 200
 201                 // call dbusSend with bus type, destination, object, message and arguments
 202                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 203         });
 204
 205         return promise;
 206 };
 207
 208
 209
 210 /*****************************************************************************/
 211 //Generic definition for an agent. An agent needs :
 212 //srvDbusName : the DBus parent service
 213 //objPath : a DBus path to access it
 214 //jsHdl : a Javascript handler to process methods,
 215 //xml : the xml which describe interface/methods/signals...
 216 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 217         this.srvName = srvDbusName;
 218         this.registered = false;
 219         this.xml = xml;
 220         this.objectPath = objPath;
 221         this.jsHdl = jsHdl;
 222         return this;
 223 };
 224
 225
 226 cloudeebus.Service = function(session, busConnection, name) {
 227         this.wampSession = session;
 228         this.busConnection = busConnection;
 229         this.name = name;
 230         this.agents = [];
 231         this.isCreated = false;
 232         return this;
 233 };
 234
 235
 236 cloudeebus.Service.prototype.remove = function() {
 237         var self = this;
 238
 239         var promise = new cloudeebus.Promise(function (resolver) {
 240                 function ServiceRemovedSuccessCB(serviceName) {
 241                         try {
 242                                 resolver.fulfill(serviceName, true);
 243                         }
 244                         catch (e) {
 245                                 var errorStr = cloudeebus.getError(e);
 246                                 cloudeebus.log("Method callback exception: " + errorStr);
 247                                 resolver.reject(errorStr, true);
 248                         }
 249                 }
 250
 251                 function ServiceRemovedErrorCB(error) {
 252                         var errorStr = cloudeebus.getError(error);
 253                         cloudeebus.log("Error removing service : " + self.name + ", error: " + errorStr);
 254                         self.promise.resolver.reject(errorStr, true);
 255                 }
 256
 257                 for (var idx in self.agents) {
 258                         if (self.agents[idx]) {
 259                                 self.removeAgent(self.agents[idx]);
 260                         }
 261                 }
 262
 263                 var arglist = [
 264                     self.name
 265                     ];
 266
 267                 // call dbusSend with bus type, destination, object, message and arguments
 268                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 269         });
 270
 271         return promise;
 272 };
 273
 274
 275 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 276
 277         var funcToCall = null;
 278
 279         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 280         // and a method named 'method'
 281         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 282                 objectJS.interfaceProxies[ifName][method]) {
 283                 funcToCall = objectJS.interfaceProxies[ifName][method];
 284         } else {
 285                 // retrieve the method directly from 'root' of objectJs
 286                 funcToCall = objectJS[method];
 287         }
 288
 289         return funcToCall;
 290 };
 291
 292
 293 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 294
 295         var service = this;
 296         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 297         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 298
 299         if (funcToCall == null)
 300                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 301         else {
 302                 agent.jsHdl.wrapperFunc[method] = function() {
 303                         var result;
 304                         var methodId = arguments[0];
 305                         var callDict = {};
 306                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 307                         eval("callDict = " + arguments[1]);
 308                         try {
 309                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 310                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 311                         }
 312                         catch (e) {
 313                                 var errorStr = cloudeebus.getError(e);
 314                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 315                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 316                         }
 317                 };
 318                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 319                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 320         }
 321 };
 322
 323
 324 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 325         var service = this;
 326         var methodExist = false;
 327
 328         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 329                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 330                         methodExist = true;
 331                 } else {
 332                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 333                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 334                         };
 335                 return;
 336         }
 337
 338         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 339                 agent.jsHdl[signal] = function() {
 340                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 341                 };
 342         else
 343                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 344 };
 345
 346
 347 cloudeebus.Service.prototype._createWrapper = function(agent) {
 348         var self = this;
 349         var parser = new DOMParser();
 350         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 351         var ifXml = xmlDoc.getElementsByTagName("interface");
 352         agent.jsHdl.wrapperFunc = [];
 353         agent.jsHdl.methodId = [];
 354         agent.jsHdl.methodId[agent.objectPath] = [];
 355         for (var i=0; i < ifXml.length; i++) {
 356                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 357                 var ifChild = ifXml[i].firstChild;
 358                 while (ifChild) {
 359                         if (ifChild.nodeName == "method") {
 360                                 var metName = ifChild.attributes.getNamedItem("name").value;
 361                                 self._addMethod(ifName, metName, agent);
 362                         }
 363                         if (ifChild.nodeName == "signal") {
 364                                 var metName = ifChild.attributes.getNamedItem("name").value;
 365                                 self._addSignal(ifName, metName, agent);
 366                         }
 367                         ifChild = ifChild.nextSibling;
 368                 }
 369         }
 370 };
 371
 372
 373 cloudeebus.Service.prototype.addAgent = function(agent) {
 374         var self = this;
 375
 376         var promise = new cloudeebus.Promise(function (resolver) {
 377                 function ServiceAddAgentSuccessCB(objPath) {
 378                         try { // calling dbus hook object function for un-translated types
 379                                 self.agents.push(agent);
 380                                 agent.registered = true;
 381                                 var result = [ objPath ];
 382                                 resolver.fulfill(result[0], true);
 383                         }
 384                         catch (e) {
 385                                 var errorStr = cloudeebus.getError(e);
 386                                 cloudeebus.log("Method callback exception: " + errorStr);
 387                                 resolver.reject(errorStr, true);
 388                         }
 389                 }
 390
 391                 function ServiceAddAgenterrorCB(error) {
 392                         var errorStr = cloudeebus.getError(error);
 393                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 394                         self.promise.resolver.reject(errorStr, true);
 395                 }
 396
 397                 try {
 398                         self._createWrapper(agent);
 399                 }
 400                 catch (e) {
 401                         var errorStr = cloudeebus.getError(e);
 402                         cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 403                         resolver.reject(errorStr, true);
 404                         return;
 405                 }
 406
 407                 var arglist = [
 408                     agent.objectPath,
 409                     agent.xml
 410                     ];
 411
 412                 // call dbusSend with bus type, destination, object, message and arguments
 413                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 414         });
 415
 416         return promise;
 417 };
 418
 419
 420 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 421         var objJs = agent.jsHdl;
 422         if (objJs.methodId[agent.objectPath]) {
 423                 for (var idx in objJs.methodId[agent.objectPath]) {
 424                         try {
 425                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 426                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 427                                 objJs.methodId[agent.objectPath][idx] = null;
 428                         }
 429                         catch (e) {
 430                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 431                         }
 432                 }
 433                 delete objJs.methodId[agent.objectPath];
 434         }
 435 };
 436
 437
 438 cloudeebus.Service.prototype.removeAgent = function(rmAgent) {
 439         var self = this;
 440
 441         var promise = new cloudeebus.Promise(function (resolver) {
 442                 function ServiceRemoveAgentSuccessCB(agent) {
 443                         try { // calling dbus hook object function for un-translated types
 444                                 self.agents.pop(agent);
 445                                 agent.registered = false;
 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                         self.promise.resolver.reject(errorStr, true);
 459                 }
 460
 461                 try {
 462                         self._deleteWrapper(rmAgent);
 463                 }
 464                 catch (e) {
 465                         var errorStr = cloudeebus.getError(e);
 466                         cloudeebus.log("Exception removing wrapper of agent " + rmAgent.objectPath + " : " + errorStr);
 467                         errorCB(errorStr);
 468                 }
 469
 470                 var arglist = [
 471                     rmAgent.objectPath
 472                     ];
 473
 474                 // call dbusSend with bus type, destination, object, message and arguments
 475                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 476         });
 477
 478         return promise;
 479 };
 480
 481
 482 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 483         var arglist = [
 484             methodId,
 485             callIndex,
 486             success,
 487             result
 488             ];
 489
 490         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 491 };
 492
 493
 494 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 495         var arglist = [
 496             objectPath,
 497             signalName,
 498             result
 499             ];
 500
 501         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 502 };
 503
 504
 505
 506 /*****************************************************************************/
 507
 508 function _processWrappers(wrappers, value) {
 509         for (var i=0; i<wrappers.length; i++)
 510                 wrappers[i](value);
 511 }
 512
 513
 514 function _processWrappersAsync(wrappers, value) {
 515         var taskid = -1;
 516         function processAsyncOnce() {
 517                 _processWrappers(wrappers, value);
 518                 clearInterval(taskid);
 519         }
 520         taskid = setInterval(processAsyncOnce, 200);
 521 }
 522
 523
 524
 525 /*****************************************************************************/
 526
 527 cloudeebus.PromiseResolver = function(promise) {
 528         this.promise = promise;
 529         this.resolved = null;
 530     return this;
 531 };
 532
 533
 534 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 535         if (this.resolved)
 536                 return;
 537
 538         var then = (value && value.then && value.then.apply) ? value.then : null;
 539         if (then) {
 540                 var self = this;
 541                 var fulfillCallback = function(arg) {
 542                         self.resolve(arg, true);
 543                 };
 544                 var rejectCallback = function(arg) {
 545                         self.reject(arg, true);
 546                 };
 547                 try {
 548                         then.apply(value, [fulfillCallback, rejectCallback]);
 549                 }
 550                 catch (e) {
 551                         this.reject(cloudeebus.getError(e), true);
 552                 }
 553         }
 554
 555         this.fulfill(value, sync);
 556 };
 557
 558
 559 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 560         if (this.resolved)
 561                 return;
 562
 563         var promise = this.promise;
 564         promise.state = "fulfilled";
 565         promise.result = value;
 566
 567         this.resolved = true;
 568         if (sync)
 569                 _processWrappers(promise._fulfillWrappers, value);
 570         else
 571                 _processWrappersAsync(promise._fulfillWrappers, value);
 572 };
 573
 574
 575 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 576         if (this.resolved)
 577                 return;
 578
 579         var promise = this.promise;
 580         promise.state = "rejected";
 581         promise.result = value;
 582
 583         this.resolved = true;
 584         if (sync)
 585                 _processWrappers(promise._rejectWrappers, value);
 586         else
 587                 _processWrappersAsync(promise._rejectWrappers, value);
 588 };
 589
 590
 591
 592 /*****************************************************************************/
 593
 594 cloudeebus.Promise = function(init) {
 595         this.state = "pending";
 596         this.result = null;
 597         this._fulfillWrappers = [];
 598         this._rejectWrappers = [];
 599         this.resolver = new cloudeebus.PromiseResolver(this);
 600         if (init) {
 601                 try {
 602                         init.apply(this, [this.resolver]);
 603                 }
 604                 catch (e) {
 605                         this.resolver.reject(cloudeebus.getError(e), true);
 606                 }
 607         }
 608     return this;
 609 };
 610
 611
 612 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 613         if (fulfillWrapper)
 614                 this._fulfillWrappers.push(fulfillWrapper);
 615         if (rejectWrapper)
 616                 this._rejectWrappers.push(rejectWrapper);
 617         if (this.state == "fulfilled")
 618                 _processWrappersAsync(this._fulfillWrappers, this.result);
 619         if (this.state == "rejected")
 620                 _processWrappersAsync(this._rejectWrappers, this.result);
 621 };
 622
 623
 624 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 625         var promise = new cloudeebus.Promise();
 626         var resolver = promise.resolver;
 627         var fulfillWrapper, rejectWrapper;
 628
 629         if (fulfillCB)
 630                 fulfillWrapper = function(arg) {
 631                         try {
 632                                 var value = fulfillCB.apply(promise, [arg]);
 633                                 resolver.resolve(value, true);
 634                         }
 635                         catch (e) {
 636                                 resolver.reject(cloudeebus.getError(e), true);
 637                         }
 638                 };
 639         else
 640                 fulfillWrapper = function(arg) {
 641                         resolver.fulfill(arg, true);
 642                 };
 643
 644         if (rejectCB)
 645                 rejectWrapper = function(arg) {
 646                         try {
 647                                 var value = rejectCB.apply(promise, [arg]);
 648                                 resolver.resolve(value, true);
 649                         }
 650                         catch (e) {
 651                                 resolver.reject(cloudeebus.getError(e), true);
 652                         }
 653                 };
 654         else
 655                 rejectWrapper = function(arg) {
 656                         resolver.reject(arg, true);
 657                 };
 658
 659         this.appendWrappers(fulfillWrapper,rejectWrapper);
 660         return promise;
 661 };
 662
 663
 664 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 665         return this.then(undefined,rejectCB);
 666 };
 667
 668
 669 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 670         this.appendWrappers(fulfillCB,rejectCB);
 671 };
 672
 673
 674 cloudeebus.Promise.resolve = function(value) {
 675         var promise = new cloudeebus.Promise();
 676         promise.resolver.resolve(value);
 677         return promise;
 678 };
 679
 680
 681 cloudeebus.Promise.fulfill = function(value) {
 682         var promise = new cloudeebus.Promise();
 683         promise.resolver.fulfill(value);
 684         return promise;
 685 };
 686
 687
 688 cloudeebus.Promise.reject = function(value) {
 689         var promise = new cloudeebus.Promise();
 690         promise.resolver.reject(value);
 691         return promise;
 692 };
 693
 694
 695 cloudeebus.Promise.any = function() {
 696         var promise = new cloudeebus.Promise();
 697         var resolver = promise.resolver;
 698         var fulfillCallback = function(arg) {
 699                 resolver.resolve(arg, true);
 700         };
 701         var rejectCallback = function(arg) {
 702                 resolver.reject(arg, true);
 703         };
 704         if (arguments.length == 0)
 705                 resolver.resolve(undefined, true);
 706         else
 707                 for (i in arguments)
 708                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 709         return promise;
 710 };
 711
 712
 713 cloudeebus.Promise.every = function() {
 714         var promise = new cloudeebus.Promise();
 715         var resolver = promise.resolver;
 716         var index = 0;
 717         var countdown = arguments.length;
 718         var args = new Array(countdown);
 719         var rejectCallback = function(arg) {
 720                 resolver.reject(arg, true);
 721         };
 722         if (arguments.length == 0)
 723                 resolver.resolve(undefined, true);
 724         else
 725                 for (i in arguments) {
 726                         var fulfillCallback = function(arg) {
 727                                 args[index] = arg;
 728                                 countdown--;
 729                                 if (countdown == 0)
 730                                         resolver.resolve(args, true);
 731                         };
 732                         index++;
 733                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 734                 }
 735
 736         return promise;
 737 };
 738
 739
 740 cloudeebus.Promise.some = function() {
 741         var promise = new cloudeebus.Promise();
 742         var resolver = promise.resolver;
 743         var index = 0;
 744         var countdown = arguments.length;
 745         var args = new Array(countdown);
 746         var fulfillCallback = function(arg) {
 747                 resolver.resolve(arg, true);
 748         };
 749         if (arguments.length == 0)
 750                 resolver.resolve(undefined, true);
 751         else
 752                 for (i in arguments) {
 753                         var rejectCallback = function(arg) {
 754                                 args[index] = arg;
 755                                 countdown--;
 756                                 if (countdown == 0)
 757                                         resolver.reject(args, true);
 758                         };
 759                         index++;
 760                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 761                 }
 762
 763         return promise;
 764 };
 765
 766
 767
 768 /*****************************************************************************/
 769
 770 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 771         this.wampSession = session;
 772         this.busConnection = busConnection;
 773         this.busName = busName;
 774         this.objectPath = objectPath;
 775         this.interfaceProxies = {};
 776         return this;
 777 };
 778
 779
 780 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 781         return this.interfaceProxies[ifName];
 782 };
 783
 784
 785 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 786
 787         var self = this;
 788
 789         function getAllPropertiesSuccessCB(props) {
 790                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 791                 for (var prop in props)
 792                         ifProxy[prop] = self[prop] = props[prop];
 793                 getAllPropertiesNextInterfaceCB();
 794         }
 795
 796         function getAllPropertiesNextInterfaceCB() {
 797                 self.propInterfaces.pop();
 798                 if (self.propInterfaces.length > 0)
 799                         self.callMethod("org.freedesktop.DBus.Properties",
 800                                 "GetAll",
 801                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 802                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 803                 else {
 804                         self.propInterfaces = null;
 805                         if (successCB)
 806                                 successCB(self);
 807                 }
 808         }
 809
 810         function introspectSuccessCB(str) {
 811                 var parser = new DOMParser();
 812                 var xmlDoc = parser.parseFromString(str, "text/xml");
 813                 var interfaces = xmlDoc.getElementsByTagName("interface");
 814                 self.propInterfaces = [];
 815                 var supportDBusProperties = false;
 816                 for (var i=0; i < interfaces.length; i++) {
 817                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 818                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 819                         if (ifName == "org.freedesktop.DBus.Properties")
 820                                 supportDBusProperties = true;
 821                         var hasProperties = false;
 822                         var ifChild = interfaces[i].firstChild;
 823                         while (ifChild) {
 824                                 if (ifChild.nodeName == "method") {
 825                                         var nArgs = 0;
 826                                         var signature = "";
 827                                         var metChild = ifChild.firstChild;
 828                                         while (metChild) {
 829                                                 if (metChild.nodeName == "arg" &&
 830                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 831                                                                 signature += metChild.attributes.getNamedItem("type").value;
 832                                                                 nArgs++;
 833                                                 }
 834                                                 metChild = metChild.nextSibling;
 835                                         }
 836                                         var metName = ifChild.attributes.getNamedItem("name").value;
 837                                         if (!self[metName])
 838                                                 self._addMethod(ifName, metName, nArgs, signature);
 839                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 840                                 }
 841                                 else if (ifChild.nodeName == "property") {
 842                                         if (!hasProperties)
 843                                                 self.propInterfaces.push(ifName);
 844                                         hasProperties = true;
 845                                 }
 846                                 ifChild = ifChild.nextSibling;
 847                         }
 848                 }
 849                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 850                         self.callMethod("org.freedesktop.DBus.Properties",
 851                                 "GetAll",
 852                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 853                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 854                 }
 855                 else {
 856                         self.propInterfaces = null;
 857                         if (successCB)
 858                                 successCB(self);
 859                 }
 860         }
 861
 862         // call Introspect on self
 863         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 864 };
 865
 866
 867 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 868
 869         var self = this;
 870
 871         self[method] = function() {
 872                 var args = [];
 873                 for (var i=0; i < nArgs; i++ )
 874                         args.push(arguments[i]);
 875                 return self.callMethod(ifName, method, args, signature);
 876         };
 877 };
 878
 879
 880 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 881
 882         var self = this;
 883
 884         var promise = new cloudeebus.Promise(function (resolver) {
 885                 function callMethodSuccessCB(str) {
 886                         try { // calling dbus hook object function for un-translated types
 887                                 var result = eval(str);
 888                                 resolver.fulfill(result[0], true);
 889                         }
 890                         catch (e) {
 891                                 var errorStr = cloudeebus.getError(e);
 892                                 cloudeebus.log("Method callback exception: " + errorStr);
 893                                 resolver.reject(errorStr, true);
 894                         }
 895                 }
 896
 897                 function callMethodErrorCB(error) {
 898                         var errorStr = cloudeebus.getError(error);
 899                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 900                         resolver.reject(errorStr, true);
 901                 }
 902
 903                 var arglist = [
 904                         self.busConnection.name,
 905                         self.busName,
 906                         self.objectPath,
 907                         ifName,
 908                         method,
 909                         JSON.stringify(args)
 910                 ];
 911
 912                 // call dbusSend with bus type, destination, object, message and arguments
 913                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 914         });
 915
 916         return promise;
 917 };
 918
 919
 920 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 921
 922         var self = this;
 923
 924         function signalHandler(id, data) {
 925                 if (handlerCB) {
 926                         try { // calling dbus hook object function for un-translated types
 927                                 handlerCB.apply(self, eval(data));
 928                         }
 929                         catch (e) {
 930                                 var errorStr = cloudeebus.getError(e);
 931                                 cloudeebus.log("Signal handler exception: " + errorStr);
 932                                 if (errorCB)
 933                                         errorCB(errorStr);
 934                         }
 935                 }
 936         }
 937
 938         function connectToSignalSuccessCB(str) {
 939                 try {
 940                         self.wampSession.subscribe(str, signalHandler);
 941                 }
 942                 catch (e) {
 943                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 944                 }
 945         }
 946
 947         function connectToSignalErrorCB(error) {
 948                 var errorStr = cloudeebus.getError(error);
 949                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 950                 if (errorCB)
 951                         errorCB(errorStr);
 952         }
 953
 954         var arglist = [
 955                 self.busConnection.name,
 956                 self.busName,
 957                 self.objectPath,
 958                 ifName,
 959                 signal
 960         ];
 961
 962         // call dbusSend with bus type, destination, object, message and arguments
 963         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 964 };
 965
 966
 967 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 968         try {
 969                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 970         }
 971         catch (e) {
 972                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 973         }
 974 };