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         var promise = new cloudeebus.Promise(function (resolver) {
 172                 var cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 173
 174                 function ServiceAddedSuccessCB(serviceName) {
 175                         cloudeebusService.isCreated = true;
 176                         resolver.fulfill(cloudeebusService, true);
 177                 }
 178
 179                 function ServiceAddedErrorCB(error) {
 180                         var errorStr = cloudeebus.getError(error);
 181                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 182                         resolver.reject(errorStr, true);
 183                 }
 184
 185                 var arglist = [
 186                     self.name,
 187                     serviceName
 188                     ];
 189
 190                 // call dbusSend with bus type, destination, object, message and arguments
 191                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 192         });
 193
 194         return promise;
 195 };
 196
 197
 198
 199 /*****************************************************************************/
 200
 201 cloudeebus.Agent = function(objectPath, handler, xml) {
 202         this.xml = xml;
 203         this.objectPath = objectPath;
 204         this.handler = handler;
 205         return this;
 206 };
 207
 208
 209 cloudeebus.Service = function(session, busConnection, name) {
 210         this.wampSession = session;
 211         this.busConnection = busConnection;
 212         this.name = name;
 213         this.agents = [];
 214         this.isCreated = false;
 215         return this;
 216 };
 217
 218
 219 cloudeebus.Service.prototype.remove = function() {
 220         var self = this;
 221
 222         var promise = new cloudeebus.Promise(function (resolver) {
 223                 function ServiceRemovedSuccessCB(serviceName) {
 224                         resolver.fulfill(serviceName, true);
 225                 }
 226
 227                 function ServiceRemovedErrorCB(error) {
 228                         var errorStr = cloudeebus.getError(error);
 229                         resolver.reject(errorStr, true);
 230                 }
 231
 232                 var arglist = [
 233                     self.name
 234                     ];
 235
 236                 // call dbusSend with bus type, destination, object, message and arguments
 237                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 238         });
 239
 240         return promise;
 241 };
 242
 243
 244 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 245
 246         var funcToCall = null;
 247
 248         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 249         // and a method named 'method'
 250         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 251                 objectJS.interfaceProxies[ifName][method]) {
 252                 funcToCall = objectJS.interfaceProxies[ifName][method];
 253         } else {
 254                 // retrieve the method directly from 'root' of objectJs
 255                 funcToCall = objectJS[method];
 256         }
 257
 258         return funcToCall;
 259 };
 260
 261
 262 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 263
 264         var service = this;
 265         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 266         var funcToCall = this._searchMethod(ifName, method, agent.handler);
 267
 268         if (funcToCall == null)
 269                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 270         else {
 271                 agent.handler.wrapperFunc[method] = function() {
 272                         var result;
 273                         var methodId = arguments[0];
 274                         var callDict = {};
 275                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 276                         eval("callDict = " + arguments[1]);
 277                         try {
 278                                 result = funcToCall.apply(agent.handler, callDict.args);
 279                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 280                         }
 281                         catch (e) {
 282                                 var errorStr = cloudeebus.getError(e);
 283                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 284                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 285                         }
 286                 };
 287                 agent.handler.methodId[agent.objectPath].push(methodId);
 288                 this.wampSession.subscribe(methodId, agent.handler.wrapperFunc[method]);
 289         }
 290 };
 291
 292
 293 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 294         var service = this;
 295
 296         if (agent.handler[signal])
 297                 cloudeebus.log("Signal '" + signal + "' emitter already implemented");
 298         else {
 299                 agent.handler[signal] = function() {
 300                         var args = [];
 301                         for (var i=0; i < arguments.length; i++ )
 302                                 args.push(arguments[i]);
 303                         service._emitSignal(agent.objectPath, signal, args);
 304                 };
 305         }
 306 };
 307
 308
 309 cloudeebus.Service.prototype._createWrapper = function(agent) {
 310         var self = this;
 311         var parser = new DOMParser();
 312         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 313         var ifXml = xmlDoc.getElementsByTagName("interface");
 314         agent.handler.wrapperFunc = {};
 315         agent.handler.methodId = {};
 316         agent.handler.methodId[agent.objectPath] = [];
 317         for (var i=0; i < ifXml.length; i++) {
 318                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 319                 var ifChild = ifXml[i].firstChild;
 320                 while (ifChild) {
 321                         if (ifChild.nodeName == "method") {
 322                                 var metName = ifChild.attributes.getNamedItem("name").value;
 323                                 self._addMethod(ifName, metName, agent);
 324                         }
 325                         if (ifChild.nodeName == "signal") {
 326                                 var metName = ifChild.attributes.getNamedItem("name").value;
 327                                 self._addSignal(ifName, metName, agent);
 328                         }
 329                         ifChild = ifChild.nextSibling;
 330                 }
 331         }
 332 };
 333
 334
 335 cloudeebus.Service.prototype.addAgent = function(agent) {
 336         var self = this;
 337
 338         var promise = new cloudeebus.Promise(function (resolver) {
 339                 function ServiceAddAgentSuccessCB(objPath) {
 340                         self.agents.push(agent);
 341                         try {
 342                                 self._createWrapper(agent);
 343                         }
 344                         catch (e) {
 345                                 var errorStr = cloudeebus.getError(e);
 346                                 cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 347                                 resolver.reject(errorStr, true);
 348                                 return;
 349                         }
 350                         resolver.fulfill(objPath, true);
 351                 }
 352
 353                 function ServiceAddAgenterrorCB(error) {
 354                         var errorStr = cloudeebus.getError(error);
 355                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 356                         resolver.reject(errorStr, true);
 357                 }
 358
 359                 var arglist = [
 360                     self.name,
 361                     agent.objectPath,
 362                     agent.xml
 363                     ];
 364
 365                 // call dbusSend with bus type, destination, object, message and arguments
 366                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 367         });
 368
 369         return promise;
 370 };
 371
 372
 373 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 374         var objJs = agent.handler;
 375         if (objJs.methodId[agent.objectPath]) {
 376                 while (objJs.methodId[agent.objectPath].length) {
 377                         try {
 378                                 this.wampSession.unsubscribe( objJs.methodId[agent.objectPath].pop() );
 379                         }
 380                         catch (e) {
 381                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 382                         }
 383                 }
 384                 objJs.methodId[agent.objectPath] = null;
 385         }
 386 };
 387
 388
 389 cloudeebus.Service.prototype.removeAgent = function(rmAgent) {
 390         var self = this;
 391
 392         var promise = new cloudeebus.Promise(function (resolver) {
 393                 function ServiceRemoveAgentSuccessCB(objectPath) {
 394                         // Searching agent in list
 395                         for (var idx in self.agents)
 396                                 if (self.agents[idx].objectPath == objectPath) {
 397                                         agent = self.agents[idx];
 398                                         break;
 399                                 }
 400
 401                         self.agents.splice(idx, 1);
 402                         self._deleteWrapper(agent);
 403                         resolver.fulfill(agent, true);
 404                 }
 405
 406                 function ServiceRemoveAgentErrorCB(error) {
 407                         var errorStr = cloudeebus.getError(error);
 408                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 409                         resolver.reject(errorStr, true);
 410                 }
 411
 412                 var arglist = [
 413                     rmAgent.objectPath
 414                     ];
 415
 416                 // call dbusSend with bus type, destination, object, message and arguments
 417                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 418         });
 419
 420         return promise;
 421 };
 422
 423
 424 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 425         var arglist = [
 426             methodId,
 427             callIndex,
 428             success,
 429             result
 430             ];
 431
 432         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 433 };
 434
 435
 436 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, args, successCB, errorCB) {
 437         var arglist = [
 438             objectPath,
 439             signalName,
 440             JSON.stringify(args)
 441             ];
 442
 443         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 444 };
 445
 446
 447
 448 /*****************************************************************************/
 449
 450 function _processWrappers(wrappers, value) {
 451         for (var i=0; i<wrappers.length; i++)
 452                 wrappers[i](value);
 453 }
 454
 455
 456 function _processWrappersAsync(wrappers, value) {
 457         var taskid = -1;
 458         function processAsyncOnce() {
 459                 _processWrappers(wrappers, value);
 460                 clearInterval(taskid);
 461         }
 462         taskid = setInterval(processAsyncOnce, 200);
 463 }
 464
 465
 466
 467 /*****************************************************************************/
 468
 469 cloudeebus.PromiseResolver = function(promise) {
 470         this.promise = promise;
 471         this.resolved = null;
 472     return this;
 473 };
 474
 475
 476 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 477         if (this.resolved)
 478                 return;
 479
 480         var then = (value && value.then && value.then.apply) ? value.then : null;
 481         if (then) {
 482                 var self = this;
 483                 var fulfillCallback = function(arg) {
 484                         self.resolve(arg, true);
 485                 };
 486                 var rejectCallback = function(arg) {
 487                         self.reject(arg, true);
 488                 };
 489                 try {
 490                         then.apply(value, [fulfillCallback, rejectCallback]);
 491                 }
 492                 catch (e) {
 493                         this.reject(cloudeebus.getError(e), true);
 494                 }
 495         }
 496
 497         this.fulfill(value, sync);
 498 };
 499
 500
 501 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 502         if (this.resolved)
 503                 return;
 504
 505         var promise = this.promise;
 506         promise.state = "fulfilled";
 507         promise.result = value;
 508
 509         this.resolved = true;
 510         if (sync)
 511                 _processWrappers(promise._fulfillWrappers, value);
 512         else
 513                 _processWrappersAsync(promise._fulfillWrappers, value);
 514 };
 515
 516
 517 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 518         if (this.resolved)
 519                 return;
 520
 521         var promise = this.promise;
 522         promise.state = "rejected";
 523         promise.result = value;
 524
 525         this.resolved = true;
 526         if (sync)
 527                 _processWrappers(promise._rejectWrappers, value);
 528         else
 529                 _processWrappersAsync(promise._rejectWrappers, value);
 530 };
 531
 532
 533
 534 /*****************************************************************************/
 535
 536 cloudeebus.Promise = function(init) {
 537         this.state = "pending";
 538         this.result = null;
 539         this._fulfillWrappers = [];
 540         this._rejectWrappers = [];
 541         this.resolver = new cloudeebus.PromiseResolver(this);
 542         if (init) {
 543                 try {
 544                         init.apply(this, [this.resolver]);
 545                 }
 546                 catch (e) {
 547                         this.resolver.reject(cloudeebus.getError(e), true);
 548                 }
 549         }
 550     return this;
 551 };
 552
 553
 554 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 555         if (fulfillWrapper)
 556                 this._fulfillWrappers.push(fulfillWrapper);
 557         if (rejectWrapper)
 558                 this._rejectWrappers.push(rejectWrapper);
 559         if (this.state == "fulfilled")
 560                 _processWrappersAsync(this._fulfillWrappers, this.result);
 561         if (this.state == "rejected")
 562                 _processWrappersAsync(this._rejectWrappers, this.result);
 563 };
 564
 565
 566 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 567         var promise = new cloudeebus.Promise();
 568         var resolver = promise.resolver;
 569         var fulfillWrapper, rejectWrapper;
 570
 571         if (fulfillCB)
 572                 fulfillWrapper = function(arg) {
 573                         try {
 574                                 var value = fulfillCB.apply(promise, [arg]);
 575                                 resolver.resolve(value, true);
 576                         }
 577                         catch (e) {
 578                                 resolver.reject(cloudeebus.getError(e), true);
 579                         }
 580                 };
 581         else
 582                 fulfillWrapper = function(arg) {
 583                         resolver.fulfill(arg, true);
 584                 };
 585
 586         if (rejectCB)
 587                 rejectWrapper = function(arg) {
 588                         try {
 589                                 var value = rejectCB.apply(promise, [arg]);
 590                                 resolver.resolve(value, true);
 591                         }
 592                         catch (e) {
 593                                 resolver.reject(cloudeebus.getError(e), true);
 594                         }
 595                 };
 596         else
 597                 rejectWrapper = function(arg) {
 598                         resolver.reject(arg, true);
 599                 };
 600
 601         this.appendWrappers(fulfillWrapper,rejectWrapper);
 602         return promise;
 603 };
 604
 605
 606 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 607         return this.then(undefined,rejectCB);
 608 };
 609
 610
 611 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 612         this.appendWrappers(fulfillCB,rejectCB);
 613 };
 614
 615
 616 cloudeebus.Promise.resolve = function(value) {
 617         var promise = new cloudeebus.Promise();
 618         promise.resolver.resolve(value);
 619         return promise;
 620 };
 621
 622
 623 cloudeebus.Promise.fulfill = function(value) {
 624         var promise = new cloudeebus.Promise();
 625         promise.resolver.fulfill(value);
 626         return promise;
 627 };
 628
 629
 630 cloudeebus.Promise.reject = function(value) {
 631         var promise = new cloudeebus.Promise();
 632         promise.resolver.reject(value);
 633         return promise;
 634 };
 635
 636
 637 cloudeebus.Promise.any = function() {
 638         var promise = new cloudeebus.Promise();
 639         var resolver = promise.resolver;
 640         var fulfillCallback = function(arg) {
 641                 resolver.resolve(arg, true);
 642         };
 643         var rejectCallback = function(arg) {
 644                 resolver.reject(arg, true);
 645         };
 646         if (arguments.length == 0)
 647                 resolver.resolve(undefined, true);
 648         else
 649                 for (i in arguments)
 650                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 651         return promise;
 652 };
 653
 654
 655 cloudeebus.Promise.every = function() {
 656         var promise = new cloudeebus.Promise();
 657         var resolver = promise.resolver;
 658         var index = 0;
 659         var countdown = arguments.length;
 660         var args = new Array(countdown);
 661         var rejectCallback = function(arg) {
 662                 resolver.reject(arg, true);
 663         };
 664         if (arguments.length == 0)
 665                 resolver.resolve(undefined, true);
 666         else
 667                 for (i in arguments) {
 668                         var fulfillCallback = function(arg) {
 669                                 args[index] = arg;
 670                                 countdown--;
 671                                 if (countdown == 0)
 672                                         resolver.resolve(args, true);
 673                         };
 674                         index++;
 675                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 676                 }
 677
 678         return promise;
 679 };
 680
 681
 682 cloudeebus.Promise.some = function() {
 683         var promise = new cloudeebus.Promise();
 684         var resolver = promise.resolver;
 685         var index = 0;
 686         var countdown = arguments.length;
 687         var args = new Array(countdown);
 688         var fulfillCallback = function(arg) {
 689                 resolver.resolve(arg, true);
 690         };
 691         if (arguments.length == 0)
 692                 resolver.resolve(undefined, true);
 693         else
 694                 for (i in arguments) {
 695                         var rejectCallback = function(arg) {
 696                                 args[index] = arg;
 697                                 countdown--;
 698                                 if (countdown == 0)
 699                                         resolver.reject(args, true);
 700                         };
 701                         index++;
 702                         cloudeebus.Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 703                 }
 704
 705         return promise;
 706 };
 707
 708
 709
 710 /*****************************************************************************/
 711
 712 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 713         this.wampSession = session;
 714         this.busConnection = busConnection;
 715         this.busName = busName;
 716         this.objectPath = objectPath;
 717         this.interfaceProxies = {};
 718         this.childNodeNames = [];
 719         return this;
 720 };
 721
 722
 723 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 724         return this.interfaceProxies[ifName];
 725 };
 726
 727
 728 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 729
 730         var self = this;
 731
 732         function getAllPropertiesSuccessCB(props) {
 733                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 734                 for (var prop in props)
 735                         ifProxy[prop] = self[prop] = props[prop];
 736                 getAllPropertiesNextInterfaceCB();
 737         }
 738
 739         function getAllPropertiesNextInterfaceCB() {
 740                 self.propInterfaces.pop();
 741                 if (self.propInterfaces.length > 0)
 742                         self.callMethod("org.freedesktop.DBus.Properties",
 743                                 "GetAll",
 744                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 745                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 746                 else {
 747                         self.propInterfaces = null;
 748                         if (successCB)
 749                                 successCB(self);
 750                 }
 751         }
 752
 753         function introspectSuccessCB(str) {
 754                 var parser = new DOMParser();
 755                 var xmlDoc = parser.parseFromString(str, "text/xml");
 756                 var nodes = xmlDoc.getElementsByTagName("node");
 757                 // first node is the parent/head node
 758                 for(var i=1; i < nodes.length; i++)
 759                         self.childNodeNames.push(nodes[i].getAttribute("name"));
 760                 var interfaces = xmlDoc.getElementsByTagName("interface");
 761                 self.propInterfaces = [];
 762                 var supportDBusProperties = false;
 763                 for (var i=0; i < interfaces.length; i++) {
 764                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 765                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 766                         if (ifName == "org.freedesktop.DBus.Properties")
 767                                 supportDBusProperties = true;
 768                         var hasProperties = false;
 769                         var ifChild = interfaces[i].firstChild;
 770                         while (ifChild) {
 771                                 if (ifChild.nodeName == "method") {
 772                                         var nArgs = 0;
 773                                         var signature = "";
 774                                         var metChild = ifChild.firstChild;
 775                                         while (metChild) {
 776                                                 if (metChild.nodeName == "arg" &&
 777                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 778                                                                 signature += metChild.attributes.getNamedItem("type").value;
 779                                                                 nArgs++;
 780                                                 }
 781                                                 metChild = metChild.nextSibling;
 782                                         }
 783                                         var metName = ifChild.attributes.getNamedItem("name").value;
 784                                         if (!self[metName])
 785                                                 self._addMethod(ifName, metName, nArgs, signature);
 786                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 787                                 }
 788                                 else if (ifChild.nodeName == "property") {
 789                                         if (!hasProperties)
 790                                                 self.propInterfaces.push(ifName);
 791                                         hasProperties = true;
 792                                 }
 793                                 ifChild = ifChild.nextSibling;
 794                         }
 795                 }
 796                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 797                         self.callMethod("org.freedesktop.DBus.Properties",
 798                                 "GetAll",
 799                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 800                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 801                 }
 802                 else {
 803                         self.propInterfaces = null;
 804                         if (successCB)
 805                                 successCB(self);
 806                 }
 807         }
 808
 809         // call Introspect on self
 810         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 811 };
 812
 813
 814 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 815
 816         var self = this;
 817
 818         self[method] = function() {
 819                 var args = [];
 820                 for (var i=0; i < nArgs; i++ )
 821                         args.push(arguments[i]);
 822                 return self.callMethod(ifName, method, args, signature);
 823         };
 824 };
 825
 826
 827 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 828
 829         var self = this;
 830
 831         var promise = new cloudeebus.Promise(function (resolver) {
 832                 function callMethodSuccessCB(str) {
 833                         try { // calling dbus hook object function for un-translated types
 834                                 var result = eval(str);
 835                                 resolver.fulfill(result[0], true);
 836                         }
 837                         catch (e) {
 838                                 var errorStr = cloudeebus.getError(e);
 839                                 cloudeebus.log("Method callback exception: " + errorStr);
 840                                 resolver.reject(errorStr, true);
 841                         }
 842                 }
 843
 844                 function callMethodErrorCB(error) {
 845                         var errorStr = cloudeebus.getError(error);
 846                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 847                         resolver.reject(errorStr, true);
 848                 }
 849
 850                 var arglist = [
 851                         self.busConnection.name,
 852                         self.busName,
 853                         self.objectPath,
 854                         ifName,
 855                         method,
 856                         JSON.stringify(args)
 857                 ];
 858
 859                 // call dbusSend with bus type, destination, object, message and arguments
 860                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 861         });
 862
 863         return promise;
 864 };
 865
 866
 867 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 868
 869         var self = this;
 870
 871         function signalHandler(id, data) {
 872                 if (handlerCB) {
 873                         try { // calling dbus hook object function for un-translated types
 874                                 handlerCB.apply(self, eval(data));
 875                         }
 876                         catch (e) {
 877                                 var errorStr = cloudeebus.getError(e);
 878                                 cloudeebus.log("Signal handler exception: " + errorStr);
 879                                 if (errorCB)
 880                                         errorCB(errorStr);
 881                         }
 882                 }
 883         }
 884
 885         function connectToSignalSuccessCB(str) {
 886                 try {
 887                         self.wampSession.subscribe(str, signalHandler);
 888                 }
 889                 catch (e) {
 890                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 891                 }
 892         }
 893
 894         function connectToSignalErrorCB(error) {
 895                 var errorStr = cloudeebus.getError(error);
 896                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 897                 if (errorCB)
 898                         errorCB(errorStr);
 899         }
 900
 901         var arglist = [
 902                 self.busConnection.name,
 903                 self.busName,
 904                 self.objectPath,
 905                 ifName,
 906                 signal
 907         ];
 908
 909         // call dbusSend with bus type, destination, object, message and arguments
 910         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 911 };
 912
 913
 914 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 915         try {
 916                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 917         }
 918         catch (e) {
 919                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 920         }
 921 };