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 busServiceAddedSuccessCB(service) {
 172                   try {
 173                           service.isCreated = true;
 174                           var result = [cloudeebusService];
 175                           resolver.fulfill(result[0], true);
 176                   }
 177                   catch (e) {
 178                           cloudeebus.log("Method callback exception: " + e);
 179                           resolver.reject(e, true);
 180                   }
 181           }
 182
 183           function busServiceErrorSuccessCB(error) {
 184                   resolver.reject(cloudeebus.getError(error), true);
 185           }
 186
 187           cloudeebusService.add(this).then(busServiceAddedSuccessCB, busServiceErrorSuccessCB);
 188         });
 189
 190         return promise;
 191 };
 192
 193 cloudeebus.BusConnection.prototype.removeService = function(serviceName, successCB, errorCB) {
 194         var self = this;
 195
 196         function busServiceRemovedSuccessCB(serviceName) {
 197                 // Be sure we are removing the service requested...
 198                 if (serviceName == self.service.name) {
 199                         self.service = null;
 200                         if (successCB)
 201                                 successCB(serviceName);
 202                 }
 203         }
 204
 205         cloudeebusService.remove(busServiceRemovedSuccessCB, errorCB);
 206 };
 207
 208
 209 /*****************************************************************************/
 210 //Generic definition for an agent. An agent need :
 211 //srvDbusName : the DBus parent service
 212 //objPath : a DBus path to access it
 213 //jsHdl : a Javascript handler to process methods,
 214 //xml : the xml which describe interface/methods/signals...
 215 Agent = function(srvDbusName, objPath, jsHdl, xml) {
 216         this.srvName = srvDbusName;
 217         this.registered = false;
 218         this.xml = xml;
 219         this.objectPath = objPath;
 220         this.jsHdl = jsHdl;
 221         return this;
 222 };
 223
 224
 225 cloudeebus.Service = function(session, busConnection, name) {
 226         this.wampSession = session;
 227         this.busConnection = busConnection;
 228         this.name = name;
 229         this.isCreated = false;
 230         return this;
 231 };
 232
 233 cloudeebus.Service.prototype.add = function(promise) {
 234         var self = this;
 235         self.promise = promise;
 236         var resolver = self.promise.resolver;
 237
 238         function ServiceAddedSuccessCB(serviceName) {
 239                 try { // calling dbus hook object function for un-translated types
 240                         var result = [self];
 241                         resolver.fulfill(result[0], true);
 242                 }
 243                 catch (e) {
 244                         cloudeebus.log("Method callback exception: " + e);
 245                         resolver.reject(e, true);
 246                 }
 247         }
 248
 249         function ServiceAddedErrorCB(error) {
 250                 var errorStr = cloudeebus.getError(error);
 251                 cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 252                 self.promise.resolver.reject(errorStr, true);
 253         }
 254
 255         var arglist = [
 256             this.busConnection,
 257             this.name
 258             ];
 259
 260         // call dbusSend with bus type, destination, object, message and arguments
 261         this.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 262         return promise;
 263 };
 264
 265 cloudeebus.Service.prototype.remove = function(successCB, errorCB) {
 266         function ServiceRemovedSuccessCB(serviceName) {
 267                 if (successCB) {
 268                         try {
 269                                 successCB(serviceName);
 270                         }
 271                         catch (e) {
 272                                 alert("Exception removing service " + serviceName + " : " + cloudeebus.getError(e));
 273                         }
 274                 }
 275         }
 276
 277         var arglist = [
 278             this.name
 279             ];
 280
 281         // call dbusSend with bus type, destination, object, message and arguments
 282         this.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, errorCB);
 283 };
 284
 285 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 286
 287         var funcToCall = null;
 288
 289         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 290         // and a method named 'method'
 291         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 292                 objectJS.interfaceProxies[ifName][method]) {
 293                 funcToCall = objectJS.interfaceProxies[ifName][method];
 294         } else {
 295                 // retrieve the method directly from 'root' of objectJs
 296                 funcToCall = objectJS[method];
 297         }
 298
 299         return funcToCall;
 300 };
 301
 302 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 303
 304         var service = this;
 305         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 306         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 307
 308         if (funcToCall == null)
 309                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 310         else {
 311                 agent.jsHdl.wrapperFunc[method] = function() {
 312                         var result;
 313                         var methodId = arguments[0];
 314                         var callDict = {};
 315                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 316                         eval("callDict = " + arguments[1]);
 317                         try {
 318                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 319                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 320                         }
 321                         catch (e) {
 322                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + e);
 323                                 service._returnMethod(methodId, callDict.callIndex, false, e.message);
 324                         }
 325                 };
 326                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 327                 cloudeebus.log("subscribe " + methodId);
 328                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 329         }
 330 };
 331
 332 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 333         var service = this;
 334         var methodExist = false;
 335
 336         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 337                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 338                         methodExist = true;
 339                 } else {
 340                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 341                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 342                         };
 343                 return;
 344         }
 345
 346         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 347                 agent.jsHdl[signal] = function() {
 348                         service.emitSignal(agent.objectPath, signal, arguments[0]);
 349                 };
 350         else
 351                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 352 };
 353
 354 cloudeebus.Service.prototype._createWrapper = function(agent) {
 355         var self = this;
 356         var parser = new DOMParser();
 357         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 358         var ifXml = xmlDoc.getElementsByTagName("interface");
 359         agent.jsHdl.wrapperFunc = [];
 360         agent.jsHdl.methodId = [];
 361         agent.jsHdl.methodId[agent.objectPath] = [];
 362         for (var i=0; i < ifXml.length; i++) {
 363                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 364                 var ifChild = ifXml[i].firstChild;
 365                 while (ifChild) {
 366                         if (ifChild.nodeName == "method") {
 367                                 var metName = ifChild.attributes.getNamedItem("name").value;
 368                                 self._addMethod(ifName, metName, agent);
 369                         }
 370                         if (ifChild.nodeName == "signal") {
 371                                 var metName = ifChild.attributes.getNamedItem("name").value;
 372                                 self._addSignal(objectPath, ifName, metName, objectJS);
 373                         }
 374                         ifChild = ifChild.nextSibling;
 375                 }
 376         }
 377 };
 378
 379 cloudeebus.Service.prototype.addAgent = function(agent, successCB, errorCB) {
 380         function ServiceAddAgentSuccessCB(objPath) {
 381                 if (successCB) {
 382                         try {
 383                                 successCB(objPath);
 384                         }
 385                         catch (e) {
 386                                 alert("Exception adding agent " + agent.objectPath + " : " + cloudeebus.getError(e));
 387                         }
 388                 }
 389         }
 390
 391         try {
 392                 this._createWrapper(agent);
 393         }
 394         catch (e) {
 395                 var errorStr = cloudeebus.getError(e);
 396                 alert("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 397                 errorCB(errorStr);
 398                 return;
 399         }
 400
 401         var arglist = [
 402             agent.objectPath,
 403             agent.xml
 404             ];
 405
 406         // call dbusSend with bus type, destination, object, message and arguments
 407         this.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, errorCB);
 408 };
 409
 410 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 411         var self = this;
 412         var objJs = agent.jsHdl;
 413         if (objJs.methodId[agent.objectPath]) {
 414                 for (var idx in objJs.methodId[agent.objectPath]) {
 415                         try {
 416                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 417                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 418                                 objJs.methodId[agent.objectPath][idx] = null;
 419                         }
 420                         catch (e) {
 421                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 422                         }
 423                 }
 424                 delete objJs.methodId[agent.objectPath];
 425         }
 426 };
 427
 428 cloudeebus.Service.prototype.delAgent = function(rmAgent, successCB, errorCB) {
 429         function ServiceDelAgentSuccessCB(agent) {
 430                 if (successCB) {
 431                         try {
 432                                 successCB(agent);
 433                         }
 434                         catch (e) {
 435                                 var errorStr = cloudeebus.getError(e);
 436                                 alert("Exception deleting agent " + rmAgent.objectPath + " : " + errorStr);
 437                                 errorCB(errorStr);
 438                         }
 439                 }
 440         }
 441
 442         try {
 443                 this._deleteWrapper(rmAgent);
 444         }
 445         catch (e) {
 446                 var errorStr = cloudeebus.getError(e);
 447                 alert("Exception deleting agent wrapper " + rmAgent.objectPath + " : " + errorStr);
 448                 errorCB(errorStr);
 449         }
 450
 451         var arglist = [
 452             rmAgent.objectPath
 453             ];
 454
 455         // call dbusSend with bus type, destination, object, message and arguments
 456         this.wampSession.call("serviceDelAgent", arglist).then(ServiceDelAgentSuccessCB, errorCB);
 457 };
 458
 459 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 460         var arglist = [
 461             methodId,
 462             callIndex,
 463             success,
 464             result
 465             ];
 466
 467         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 468 };
 469
 470 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 471         var arglist = [
 472             objectPath,
 473             signalName,
 474             result
 475             ];
 476
 477         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 478 };
 479
 480
 481
 482 /*****************************************************************************/
 483
 484 function _processWrappers(wrappers, value) {
 485         for (var i=0; i<wrappers.length; i++)
 486                 wrappers[i](value);
 487 }
 488
 489
 490 function _processWrappersAsync(wrappers, value) {
 491         var taskid = -1;
 492         function processAsyncOnce() {
 493                 _processWrappers(wrappers, value);
 494                 clearInterval(taskid);
 495         }
 496         taskid = setInterval(processAsyncOnce, 200);
 497 }
 498
 499
 500
 501 /*****************************************************************************/
 502
 503 cloudeebus.PromiseResolver = function(promise) {
 504         this.promise = promise;
 505         this.resolved = null;
 506     return this;
 507 };
 508
 509
 510 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 511         if (this.resolved)
 512                 return;
 513
 514         var then = (value && value.then && value.then.apply) ? value.then : null;
 515         if (then) {
 516                 var self = this;
 517                 var fulfillCallback = function(arg) {
 518                         self.resolve(arg, true);
 519                 };
 520                 var rejectCallback = function(arg) {
 521                         self.reject(arg, true);
 522                 };
 523                 try {
 524                         then.apply(value, [fulfillCallback, rejectCallback]);
 525                 }
 526                 catch (e) {
 527                         this.reject(e, true);
 528                 }
 529         }
 530
 531         this.fulfill(value, sync);
 532 };
 533
 534
 535 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 536         if (this.resolved)
 537                 return;
 538
 539         var promise = this.promise;
 540         promise.state = "fulfilled";
 541         promise.result = value;
 542
 543         this.resolved = true;
 544         if (sync)
 545                 _processWrappers(promise._fulfillWrappers, value);
 546         else
 547                 _processWrappersAsync(promise._fulfillWrappers, value);
 548 };
 549
 550
 551 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 552         if (this.resolved)
 553                 return;
 554
 555         var promise = this.promise;
 556         promise.state = "rejected";
 557         promise.result = value;
 558
 559         this.resolved = true;
 560         if (sync)
 561                 _processWrappers(promise._rejectWrappers, value);
 562         else
 563                 _processWrappersAsync(promise._rejectWrappers, value);
 564 };
 565
 566
 567
 568 /*****************************************************************************/
 569
 570 cloudeebus.Promise = function(init) {
 571         this.state = "pending";
 572         this.result = null;
 573         this._fulfillWrappers = [];
 574         this._rejectWrappers = [];
 575         this.resolver = new cloudeebus.PromiseResolver(this);
 576         if (init) {
 577                 try {
 578                         init.apply(this, [this.resolver]);
 579                 }
 580                 catch (e) {
 581                         this.resolver.reject(e, true);
 582                 }
 583         }
 584     return this;
 585 };
 586
 587
 588 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 589         if (fulfillWrapper)
 590                 this._fulfillWrappers.push(fulfillWrapper);
 591         if (rejectWrapper)
 592                 this._rejectWrappers.push(rejectWrapper);
 593         if (this.state == "fulfilled")
 594                 _processWrappersAsync(this._fulfillWrappers, this.result);
 595         if (this.state == "rejected")
 596                 _processWrappersAsync(this._rejectWrappers, this.result);
 597 };
 598
 599
 600 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 601         var promise = new cloudeebus.Promise();
 602         var resolver = promise.resolver;
 603         var fulfillWrapper, rejectWrapper;
 604
 605         if (fulfillCB)
 606                 fulfillWrapper = function(arg) {
 607                         try {
 608                                 var value = fulfillCB.apply(promise, [arg]);
 609                                 resolver.resolve(value, true);
 610                         }
 611                         catch (e) {
 612                                 resolver.reject(e, true);
 613                         }
 614                 };
 615         else
 616                 fulfillWrapper = function(arg) {
 617                         resolver.fulfill(arg, true);
 618                 };
 619
 620         if (rejectCB)
 621                 rejectWrapper = function(arg) {
 622                         try {
 623                                 var value = rejectCB.apply(promise, [arg]);
 624                                 resolver.resolve(value, true);
 625                         }
 626                         catch (e) {
 627                                 resolver.reject(e, true);
 628                         }
 629                 };
 630         else
 631                 rejectWrapper = function(arg) {
 632                         resolver.reject(arg, true);
 633                 };
 634
 635         this.appendWrappers(fulfillWrapper,rejectWrapper);
 636         return promise;
 637 };
 638
 639
 640 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 641         return this.then(undefined,rejectCB);
 642 };
 643
 644
 645 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 646         this.appendWrappers(fulfillCB,rejectCB);
 647 };
 648
 649
 650 cloudeebus.Promise.resolve = function(value) {
 651         var promise = new cloudeebus.Promise();
 652         promise.resolver.resolve(value);
 653         return promise;
 654 };
 655
 656
 657 cloudeebus.Promise.fulfill = function(value) {
 658         var promise = new cloudeebus.Promise();
 659         promise.resolver.fulfill(value);
 660         return promise;
 661 };
 662
 663
 664 cloudeebus.Promise.reject = function(value) {
 665         var promise = new cloudeebus.Promise();
 666         promise.resolver.reject(value);
 667         return promise;
 668 };
 669
 670
 671 cloudeebus.Promise.any = function() {
 672         var promise = new cloudeebus.Promise();
 673         var resolver = promise.resolver;
 674         var fulfillCallback = function(arg) {
 675                 resolver.resolve(arg, true);
 676         };
 677         var rejectCallback = function(arg) {
 678                 resolver.reject(arg, true);
 679         };
 680         if (arguments.length == 0)
 681                 resolver.resolve(undefined, true);
 682         else
 683                 for (i in arguments)
 684                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 685         return promise;
 686 };
 687
 688
 689 cloudeebus.Promise.every = function() {
 690         var promise = new cloudeebus.Promise();
 691         var resolver = promise.resolver;
 692         var index = 0;
 693         var countdown = arguments.length;
 694         var args = new Array(countdown);
 695         var rejectCallback = function(arg) {
 696                 resolver.reject(arg, true);
 697         };
 698         if (arguments.length == 0)
 699                 resolver.resolve(undefined, true);
 700         else
 701                 for (i in arguments) {
 702                         var fulfillCallback = function(arg) {
 703                                 args[index] = arg;
 704                                 countdown--;
 705                                 if (countdown == 0)
 706                                         resolver.resolve(args, true);
 707                         };
 708                         index++;
 709                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 710                 }
 711
 712         return promise;
 713 };
 714
 715
 716 cloudeebus.Promise.some = function() {
 717         var promise = new cloudeebus.Promise();
 718         var resolver = promise.resolver;
 719         var index = 0;
 720         var countdown = arguments.length;
 721         var args = new Array(countdown);
 722         var fulfillCallback = function(arg) {
 723                 resolver.resolve(arg, true);
 724         };
 725         if (arguments.length == 0)
 726                 resolver.resolve(undefined, true);
 727         else
 728                 for (i in arguments) {
 729                         var rejectCallback = function(arg) {
 730                                 args[index] = arg;
 731                                 countdown--;
 732                                 if (countdown == 0)
 733                                         resolver.reject(args, true);
 734                         };
 735                         index++;
 736                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 737                 }
 738
 739         return promise;
 740 };
 741
 742
 743
 744 /*****************************************************************************/
 745
 746 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 747         this.wampSession = session;
 748         this.busConnection = busConnection;
 749         this.busName = busName;
 750         this.objectPath = objectPath;
 751         this.interfaceProxies = {};
 752         return this;
 753 };
 754
 755
 756 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 757         return this.interfaceProxies[ifName];
 758 };
 759
 760
 761 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 762
 763         var self = this;
 764
 765         function getAllPropertiesSuccessCB(props) {
 766                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 767                 for (var prop in props)
 768                         ifProxy[prop] = self[prop] = props[prop];
 769                 getAllPropertiesNextInterfaceCB();
 770         }
 771
 772         function getAllPropertiesNextInterfaceCB() {
 773                 self.propInterfaces.pop();
 774                 if (self.propInterfaces.length > 0)
 775                         self.callMethod("org.freedesktop.DBus.Properties",
 776                                 "GetAll",
 777                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 778                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 779                 else {
 780                         self.propInterfaces = null;
 781                         if (successCB)
 782                                 successCB(self);
 783                 }
 784         }
 785
 786         function introspectSuccessCB(str) {
 787                 var parser = new DOMParser();
 788                 var xmlDoc = parser.parseFromString(str, "text/xml");
 789                 var interfaces = xmlDoc.getElementsByTagName("interface");
 790                 self.propInterfaces = [];
 791                 var supportDBusProperties = false;
 792                 for (var i=0; i < interfaces.length; i++) {
 793                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 794                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 795                         if (ifName == "org.freedesktop.DBus.Properties")
 796                                 supportDBusProperties = true;
 797                         var hasProperties = false;
 798                         var ifChild = interfaces[i].firstChild;
 799                         while (ifChild) {
 800                                 if (ifChild.nodeName == "method") {
 801                                         var nArgs = 0;
 802                                         var signature = "";
 803                                         var metChild = ifChild.firstChild;
 804                                         while (metChild) {
 805                                                 if (metChild.nodeName == "arg" &&
 806                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 807                                                                 signature += metChild.attributes.getNamedItem("type").value;
 808                                                                 nArgs++;
 809                                                 }
 810                                                 metChild = metChild.nextSibling;
 811                                         }
 812                                         var metName = ifChild.attributes.getNamedItem("name").value;
 813                                         if (!self[metName])
 814                                                 self._addMethod(ifName, metName, nArgs, signature);
 815                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 816                                 }
 817                                 else if (ifChild.nodeName == "property") {
 818                                         if (!hasProperties)
 819                                                 self.propInterfaces.push(ifName);
 820                                         hasProperties = true;
 821                                 }
 822                                 ifChild = ifChild.nextSibling;
 823                         }
 824                 }
 825                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 826                         self.callMethod("org.freedesktop.DBus.Properties",
 827                                 "GetAll",
 828                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 829                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 830                 }
 831                 else {
 832                         self.propInterfaces = null;
 833                         if (successCB)
 834                                 successCB(self);
 835                 }
 836         }
 837
 838         // call Introspect on self
 839         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 840 };
 841
 842
 843 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 844
 845         var self = this;
 846
 847         self[method] = function() {
 848                 var args = [];
 849                 for (var i=0; i < nArgs; i++ )
 850                         args.push(arguments[i]);
 851                 return self.callMethod(ifName, method, args, signature);
 852         };
 853 };
 854
 855
 856 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 857
 858         var self = this;
 859
 860         var promise = new cloudeebus.Promise(function (resolver) {
 861                 function callMethodSuccessCB(str) {
 862                         try { // calling dbus hook object function for un-translated types
 863                                 var result = eval(str);
 864                                 resolver.fulfill(result[0], true);
 865                         }
 866                         catch (e) {
 867                                 cloudeebus.log("Method callback exception: " + e);
 868                                 resolver.reject(e, true);
 869                         }
 870                 }
 871
 872                 function callMethodErrorCB(error) {
 873                         var errorStr = cloudeebus.getError(error);
 874                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 875                         resolver.reject(errorStr, true);
 876                 }
 877
 878                 var arglist = [
 879                         self.busConnection.name,
 880                         self.busName,
 881                         self.objectPath,
 882                         ifName,
 883                         method,
 884                         JSON.stringify(args)
 885                 ];
 886
 887                 // call dbusSend with bus type, destination, object, message and arguments
 888                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 889         });
 890
 891         return promise;
 892 };
 893
 894
 895 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 896
 897         var self = this;
 898
 899         function signalHandler(id, data) {
 900                 if (handlerCB) {
 901                         try { // calling dbus hook object function for un-translated types
 902                                 handlerCB.apply(self, eval(data));
 903                         }
 904                         catch (e) {
 905                                 var errorStr = cloudeebus.getError(e);
 906                                 cloudeebus.log("Signal handler exception: " + errorStr);
 907                                 if (errorCB)
 908                                         errorCB(errorStr);
 909                         }
 910                 }
 911         }
 912
 913         function connectToSignalSuccessCB(str) {
 914                 try {
 915                         self.wampSession.subscribe(str, signalHandler);
 916                 }
 917                 catch (e) {
 918                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 919                 }
 920         }
 921
 922         function connectToSignalErrorCB(error) {
 923                 var errorStr = cloudeebus.getError(error);
 924                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 925                 if (errorCB)
 926                         errorCB(cloudeebus.getError(errorStr));
 927         }
 928
 929         var arglist = [
 930                 self.busConnection.name,
 931                 self.busName,
 932                 self.objectPath,
 933                 ifName,
 934                 signal
 935         ];
 936
 937         // call dbusSend with bus type, destination, object, message and arguments
 938         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 939 };
 940
 941
 942 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 943         try {
 944                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 945         }
 946         catch (e) {
 947                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 948         }
 949 };