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)
  49                 return error.desc;
  50         if (error.name && error.message)
  51                 return error.name + " : " + error.message;
  52         if (error.message)
  53                 return error.message;
  54         if (error.name)
  55                 return error.name;
  56         return error;
  57 };
  58
  59 cloudeebus.versionCheck = function(version) {
  60         var ver = version.split(".");
  61         var min = cloudeebus.minVersion.split(".");
  62         for (var i=0; i<ver.length; i++) {
  63                 if (Number(ver[i]) > Number(min[i]))
  64                         return true;
  65                 if (Number(ver[i]) < Number(min[i]))
  66                         return false;
  67         }
  68         return true;
  69 };
  70
  71
  72 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  73         cloudeebus.reset();
  74         cloudeebus.uri = uri;
  75
  76         function onCloudeebusVersionCheckCB(version) {
  77                 if (cloudeebus.versionCheck(version)) {
  78                         cloudeebus.log("Connected to " + cloudeebus.uri);
  79                         if (successCB)
  80                                 successCB();
  81                 } else {
  82                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  83                         cloudeebus.log(errorMsg);
  84                         if (errorCB)
  85                                 errorCB(errorMsg);
  86                 }
  87         }
  88
  89         function onWAMPSessionAuthErrorCB(error) {
  90                 var errorStr = cloudeebus.getError(error);
  91                 cloudeebus.log("Authentication error: " + errorStr);
  92                 if (errorCB)
  93                         errorCB(errorStr);
  94         }
  95
  96         function onWAMPSessionAuthenticatedCB(permissions) {
  97                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
  98                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
  99                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
 100         }
 101
 102         function onWAMPSessionChallengedCB(challenge) {
 103                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
 104                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 105         }
 106
 107         function onWAMPSessionConnectedCB(session) {
 108                 cloudeebus.wampSession = session;
 109                 if (manifest) {
 110                         cloudeebus.wampSession.authreq(
 111                                         manifest.name,
 112                                         {permissions: manifest.permissions,
 113                                                  services: manifest.services}
 114                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 115                 }
 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         if (!serviceName)
 169                 serviceName = "";
 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                         try { // calling dbus hook object function for un-translated types
 176                                 cloudeebusService.isCreated = true;
 177                                 resolver.fulfill(cloudeebusService, true);
 178                         }
 179                         catch (e) {
 180                                 var errorStr = cloudeebus.getError(e);
 181                                 cloudeebus.log("Method callback exception: " + errorStr);
 182                                 resolver.reject(errorStr, true);
 183                         }
 184                 }
 185
 186                 function ServiceAddedErrorCB(error) {
 187                         var errorStr = cloudeebus.getError(error);
 188                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 189                         resolver.reject(errorStr, true);
 190                 }
 191
 192                 var arglist = [
 193                     self.name,
 194                     serviceName
 195                     ];
 196
 197                 // call dbusSend with bus type, destination, object, message and arguments
 198                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 199         });
 200
 201         return promise;
 202 };
 203
 204
 205
 206 /*****************************************************************************/
 207 //Generic definition for an agent. An agent needs :
 208 //srvDbusName : the DBus parent service
 209 //objPath : a DBus path to access it
 210 //jsHdl : a Javascript handler to process methods,
 211 //xml : the xml which describe interface/methods/signals...
 212 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 213         this.srvName = srvDbusName;
 214         this.registered = false;
 215         this.xml = xml;
 216         this.objectPath = objPath;
 217         this.jsHdl = jsHdl;
 218         return this;
 219 };
 220
 221
 222 cloudeebus.Service = function(session, busConnection, name) {
 223         this.wampSession = session;
 224         this.busConnection = busConnection;
 225         this.name = name;
 226         this.agents = [];
 227         this.isCreated = false;
 228         return this;
 229 };
 230
 231
 232 cloudeebus.Service.prototype.remove = function() {
 233         var self = this;
 234
 235         var promise = new cloudeebus.Promise(function (resolver) {
 236                 function ServiceRemovedSuccessCB(serviceName) {
 237                         try {
 238                                 resolver.fulfill(serviceName, true);
 239                         }
 240                         catch (e) {
 241                                 var errorStr = cloudeebus.getError(e);
 242                                 cloudeebus.log("Method callback exception: " + errorStr);
 243                                 resolver.reject(errorStr, true);
 244                         }
 245                 }
 246
 247                 function ServiceRemovedErrorCB(error) {
 248                         var errorStr = cloudeebus.getError(error);
 249                         cloudeebus.log("Error removing service : " + self.name + ", error: " + errorStr);
 250                         self.promise.resolver.reject(errorStr, true);
 251                 }
 252
 253                 for (var idx in self.agents) {
 254                         if (self.agents[idx]) {
 255                                 self.removeAgent(self.agents[idx]);
 256                         }
 257                 }
 258
 259                 var arglist = [
 260                     self.name
 261                     ];
 262
 263                 // call dbusSend with bus type, destination, object, message and arguments
 264                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 265         });
 266
 267         return promise;
 268 };
 269
 270
 271 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 272
 273         var funcToCall = null;
 274
 275         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 276         // and a method named 'method'
 277         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 278                 objectJS.interfaceProxies[ifName][method]) {
 279                 funcToCall = objectJS.interfaceProxies[ifName][method];
 280         } else {
 281                 // retrieve the method directly from 'root' of objectJs
 282                 funcToCall = objectJS[method];
 283         }
 284
 285         return funcToCall;
 286 };
 287
 288
 289 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 290
 291         var service = this;
 292         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 293         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 294
 295         if (funcToCall == null)
 296                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 297         else {
 298                 agent.jsHdl.wrapperFunc[method] = function() {
 299                         var result;
 300                         var methodId = arguments[0];
 301                         var callDict = {};
 302                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 303                         eval("callDict = " + arguments[1]);
 304                         try {
 305                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 306                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 307                         }
 308                         catch (e) {
 309                                 var errorStr = cloudeebus.getError(e);
 310                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 311                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 312                         }
 313                 };
 314                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 315                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 316         }
 317 };
 318
 319
 320 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 321         var service = this;
 322         var methodExist = false;
 323
 324         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 325                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 326                         methodExist = true;
 327                 } else {
 328                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 329                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 330                         };
 331                 return;
 332         }
 333
 334         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 335                 agent.jsHdl[signal] = function() {
 336                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 337                 };
 338         else
 339                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 340 };
 341
 342
 343 cloudeebus.Service.prototype._createWrapper = function(agent) {
 344         var self = this;
 345         var parser = new DOMParser();
 346         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 347         var ifXml = xmlDoc.getElementsByTagName("interface");
 348         agent.jsHdl.wrapperFunc = [];
 349         agent.jsHdl.methodId = [];
 350         agent.jsHdl.methodId[agent.objectPath] = [];
 351         for (var i=0; i < ifXml.length; i++) {
 352                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 353                 var ifChild = ifXml[i].firstChild;
 354                 while (ifChild) {
 355                         if (ifChild.nodeName == "method") {
 356                                 var metName = ifChild.attributes.getNamedItem("name").value;
 357                                 self._addMethod(ifName, metName, agent);
 358                         }
 359                         if (ifChild.nodeName == "signal") {
 360                                 var metName = ifChild.attributes.getNamedItem("name").value;
 361                                 self._addSignal(ifName, metName, agent);
 362                         }
 363                         ifChild = ifChild.nextSibling;
 364                 }
 365         }
 366 };
 367
 368
 369 cloudeebus.Service.prototype.addAgent = function(agent) {
 370         var self = this;
 371
 372         var promise = new cloudeebus.Promise(function (resolver) {
 373                 function ServiceAddAgentSuccessCB(objPath) {
 374                         try { // calling dbus hook object function for un-translated types
 375                                 self.agents.push(agent);
 376                                 agent.registered = true;
 377                                 var result = [ objPath ];
 378                                 resolver.fulfill(result[0], true);
 379                         }
 380                         catch (e) {
 381                                 var errorStr = cloudeebus.getError(e);
 382                                 cloudeebus.log("Method callback exception: " + errorStr);
 383                                 resolver.reject(errorStr, true);
 384                         }
 385                 }
 386
 387                 function ServiceAddAgenterrorCB(error) {
 388                         var errorStr = cloudeebus.getError(error);
 389                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 390                         self.promise.resolver.reject(errorStr, true);
 391                 }
 392
 393                 try {
 394                         self._createWrapper(agent);
 395                 }
 396                 catch (e) {
 397                         var errorStr = cloudeebus.getError(e);
 398                         cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 399                         resolver.reject(errorStr, true);
 400                         return;
 401                 }
 402
 403                 var arglist = [
 404                     agent.objectPath,
 405                     agent.xml
 406                     ];
 407
 408                 // call dbusSend with bus type, destination, object, message and arguments
 409                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 410         });
 411
 412         return promise;
 413 };
 414
 415
 416 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 417         var objJs = agent.jsHdl;
 418         if (objJs.methodId[agent.objectPath]) {
 419                 for (var idx in objJs.methodId[agent.objectPath]) {
 420                         try {
 421                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 422                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 423                                 objJs.methodId[agent.objectPath][idx] = null;
 424                         }
 425                         catch (e) {
 426                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 427                         }
 428                 }
 429                 delete objJs.methodId[agent.objectPath];
 430         }
 431 };
 432
 433
 434 cloudeebus.Service.prototype.removeAgent = function(rmAgent, successCB, errorCB) {
 435         var self = this;
 436
 437         var promise = new cloudeebus.Promise(function (resolver) {
 438                 function ServiceRemoveAgentSuccessCB(agent) {
 439                         try { // calling dbus hook object function for un-translated types
 440                                 self.agents.push(agent);
 441                                 agent.registered = true;
 442                                 var result = [ agent ];
 443                                 resolver.fulfill(result[0], true);
 444                         }
 445                         catch (e) {
 446                                 var errorStr = cloudeebus.getError(e);
 447                                 cloudeebus.log("Method callback exception: " + errorStr);
 448                                 resolver.reject(errorStr, true);
 449                         }
 450                 }
 451
 452                 function ServiceRemoveAgentErrorCB(error) {
 453                         var errorStr = cloudeebus.getError(error);
 454                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 455                         self.promise.resolver.reject(errorStr, true);
 456                 }
 457
 458                 try {
 459                         self._deleteWrapper(rmAgent);
 460                 }
 461                 catch (e) {
 462                         var errorStr = cloudeebus.getError(e);
 463                         cloudeebus.log("Exception removing wrapper of agent " + rmAgent.objectPath + " : " + errorStr);
 464                         errorCB(errorStr);
 465                 }
 466
 467                 var arglist = [
 468                     rmAgent.objectPath
 469                     ];
 470
 471                 // call dbusSend with bus type, destination, object, message and arguments
 472                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 473         });
 474
 475         return promise;
 476 };
 477
 478
 479 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 480         var arglist = [
 481             methodId,
 482             callIndex,
 483             success,
 484             result
 485             ];
 486
 487         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 488 };
 489
 490
 491 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 492         var arglist = [
 493             objectPath,
 494             signalName,
 495             result
 496             ];
 497
 498         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 499 };
 500
 501
 502
 503 /*****************************************************************************/
 504
 505 function _processWrappers(wrappers, value) {
 506         for (var i=0; i<wrappers.length; i++)
 507                 wrappers[i](value);
 508 }
 509
 510
 511 function _processWrappersAsync(wrappers, value) {
 512         var taskid = -1;
 513         function processAsyncOnce() {
 514                 _processWrappers(wrappers, value);
 515                 clearInterval(taskid);
 516         }
 517         taskid = setInterval(processAsyncOnce, 200);
 518 }
 519
 520
 521
 522 /*****************************************************************************/
 523
 524 cloudeebus.PromiseResolver = function(promise) {
 525         this.promise = promise;
 526         this.resolved = null;
 527     return this;
 528 };
 529
 530
 531 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 532         if (this.resolved)
 533                 return;
 534
 535         var then = (value && value.then && value.then.apply) ? value.then : null;
 536         if (then) {
 537                 var self = this;
 538                 var fulfillCallback = function(arg) {
 539                         self.resolve(arg, true);
 540                 };
 541                 var rejectCallback = function(arg) {
 542                         self.reject(arg, true);
 543                 };
 544                 try {
 545                         then.apply(value, [fulfillCallback, rejectCallback]);
 546                 }
 547                 catch (e) {
 548                         this.reject(cloudeebus.getError(e), true);
 549                 }
 550         }
 551
 552         this.fulfill(value, sync);
 553 };
 554
 555
 556 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 557         if (this.resolved)
 558                 return;
 559
 560         var promise = this.promise;
 561         promise.state = "fulfilled";
 562         promise.result = value;
 563
 564         this.resolved = true;
 565         if (sync)
 566                 _processWrappers(promise._fulfillWrappers, value);
 567         else
 568                 _processWrappersAsync(promise._fulfillWrappers, value);
 569 };
 570
 571
 572 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 573         if (this.resolved)
 574                 return;
 575
 576         var promise = this.promise;
 577         promise.state = "rejected";
 578         promise.result = value;
 579
 580         this.resolved = true;
 581         if (sync)
 582                 _processWrappers(promise._rejectWrappers, value);
 583         else
 584                 _processWrappersAsync(promise._rejectWrappers, value);
 585 };
 586
 587
 588
 589 /*****************************************************************************/
 590
 591 cloudeebus.Promise = function(init) {
 592         this.state = "pending";
 593         this.result = null;
 594         this._fulfillWrappers = [];
 595         this._rejectWrappers = [];
 596         this.resolver = new cloudeebus.PromiseResolver(this);
 597         if (init) {
 598                 try {
 599                         init.apply(this, [this.resolver]);
 600                 }
 601                 catch (e) {
 602                         this.resolver.reject(cloudeebus.getError(e), true);
 603                 }
 604         }
 605     return this;
 606 };
 607
 608
 609 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 610         if (fulfillWrapper)
 611                 this._fulfillWrappers.push(fulfillWrapper);
 612         if (rejectWrapper)
 613                 this._rejectWrappers.push(rejectWrapper);
 614         if (this.state == "fulfilled")
 615                 _processWrappersAsync(this._fulfillWrappers, this.result);
 616         if (this.state == "rejected")
 617                 _processWrappersAsync(this._rejectWrappers, this.result);
 618 };
 619
 620
 621 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 622         var promise = new cloudeebus.Promise();
 623         var resolver = promise.resolver;
 624         var fulfillWrapper, rejectWrapper;
 625
 626         if (fulfillCB)
 627                 fulfillWrapper = function(arg) {
 628                         try {
 629                                 var value = fulfillCB.apply(promise, [arg]);
 630                                 resolver.resolve(value, true);
 631                         }
 632                         catch (e) {
 633                                 resolver.reject(cloudeebus.getError(e), true);
 634                         }
 635                 };
 636         else
 637                 fulfillWrapper = function(arg) {
 638                         resolver.fulfill(arg, true);
 639                 };
 640
 641         if (rejectCB)
 642                 rejectWrapper = function(arg) {
 643                         try {
 644                                 var value = rejectCB.apply(promise, [arg]);
 645                                 resolver.resolve(value, true);
 646                         }
 647                         catch (e) {
 648                                 resolver.reject(cloudeebus.getError(e), true);
 649                         }
 650                 };
 651         else
 652                 rejectWrapper = function(arg) {
 653                         resolver.reject(arg, true);
 654                 };
 655
 656         this.appendWrappers(fulfillWrapper,rejectWrapper);
 657         return promise;
 658 };
 659
 660
 661 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 662         return this.then(undefined,rejectCB);
 663 };
 664
 665
 666 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 667         this.appendWrappers(fulfillCB,rejectCB);
 668 };
 669
 670
 671 cloudeebus.Promise.resolve = function(value) {
 672         var promise = new cloudeebus.Promise();
 673         promise.resolver.resolve(value);
 674         return promise;
 675 };
 676
 677
 678 cloudeebus.Promise.fulfill = function(value) {
 679         var promise = new cloudeebus.Promise();
 680         promise.resolver.fulfill(value);
 681         return promise;
 682 };
 683
 684
 685 cloudeebus.Promise.reject = function(value) {
 686         var promise = new cloudeebus.Promise();
 687         promise.resolver.reject(value);
 688         return promise;
 689 };
 690
 691
 692 cloudeebus.Promise.any = function() {
 693         var promise = new cloudeebus.Promise();
 694         var resolver = promise.resolver;
 695         var fulfillCallback = function(arg) {
 696                 resolver.resolve(arg, true);
 697         };
 698         var rejectCallback = function(arg) {
 699                 resolver.reject(arg, true);
 700         };
 701         if (arguments.length == 0)
 702                 resolver.resolve(undefined, true);
 703         else
 704                 for (i in arguments)
 705                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 706         return promise;
 707 };
 708
 709
 710 cloudeebus.Promise.every = function() {
 711         var promise = new cloudeebus.Promise();
 712         var resolver = promise.resolver;
 713         var index = 0;
 714         var countdown = arguments.length;
 715         var args = new Array(countdown);
 716         var rejectCallback = function(arg) {
 717                 resolver.reject(arg, true);
 718         };
 719         if (arguments.length == 0)
 720                 resolver.resolve(undefined, true);
 721         else
 722                 for (i in arguments) {
 723                         var fulfillCallback = function(arg) {
 724                                 args[index] = arg;
 725                                 countdown--;
 726                                 if (countdown == 0)
 727                                         resolver.resolve(args, true);
 728                         };
 729                         index++;
 730                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 731                 }
 732
 733         return promise;
 734 };
 735
 736
 737 cloudeebus.Promise.some = function() {
 738         var promise = new cloudeebus.Promise();
 739         var resolver = promise.resolver;
 740         var index = 0;
 741         var countdown = arguments.length;
 742         var args = new Array(countdown);
 743         var fulfillCallback = function(arg) {
 744                 resolver.resolve(arg, true);
 745         };
 746         if (arguments.length == 0)
 747                 resolver.resolve(undefined, true);
 748         else
 749                 for (i in arguments) {
 750                         var rejectCallback = function(arg) {
 751                                 args[index] = arg;
 752                                 countdown--;
 753                                 if (countdown == 0)
 754                                         resolver.reject(args, true);
 755                         };
 756                         index++;
 757                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 758                 }
 759
 760         return promise;
 761 };
 762
 763
 764
 765 /*****************************************************************************/
 766
 767 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 768         this.wampSession = session;
 769         this.busConnection = busConnection;
 770         this.busName = busName;
 771         this.objectPath = objectPath;
 772         this.interfaceProxies = {};
 773         return this;
 774 };
 775
 776
 777 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 778         return this.interfaceProxies[ifName];
 779 };
 780
 781
 782 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 783
 784         var self = this;
 785
 786         function getAllPropertiesSuccessCB(props) {
 787                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 788                 for (var prop in props)
 789                         ifProxy[prop] = self[prop] = props[prop];
 790                 getAllPropertiesNextInterfaceCB();
 791         }
 792
 793         function getAllPropertiesNextInterfaceCB() {
 794                 self.propInterfaces.pop();
 795                 if (self.propInterfaces.length > 0)
 796                         self.callMethod("org.freedesktop.DBus.Properties",
 797                                 "GetAll",
 798                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 799                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 800                 else {
 801                         self.propInterfaces = null;
 802                         if (successCB)
 803                                 successCB(self);
 804                 }
 805         }
 806
 807         function introspectSuccessCB(str) {
 808                 var parser = new DOMParser();
 809                 var xmlDoc = parser.parseFromString(str, "text/xml");
 810                 var interfaces = xmlDoc.getElementsByTagName("interface");
 811                 self.propInterfaces = [];
 812                 var supportDBusProperties = false;
 813                 for (var i=0; i < interfaces.length; i++) {
 814                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 815                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 816                         if (ifName == "org.freedesktop.DBus.Properties")
 817                                 supportDBusProperties = true;
 818                         var hasProperties = false;
 819                         var ifChild = interfaces[i].firstChild;
 820                         while (ifChild) {
 821                                 if (ifChild.nodeName == "method") {
 822                                         var nArgs = 0;
 823                                         var signature = "";
 824                                         var metChild = ifChild.firstChild;
 825                                         while (metChild) {
 826                                                 if (metChild.nodeName == "arg" &&
 827                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 828                                                                 signature += metChild.attributes.getNamedItem("type").value;
 829                                                                 nArgs++;
 830                                                 }
 831                                                 metChild = metChild.nextSibling;
 832                                         }
 833                                         var metName = ifChild.attributes.getNamedItem("name").value;
 834                                         if (!self[metName])
 835                                                 self._addMethod(ifName, metName, nArgs, signature);
 836                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 837                                 }
 838                                 else if (ifChild.nodeName == "property") {
 839                                         if (!hasProperties)
 840                                                 self.propInterfaces.push(ifName);
 841                                         hasProperties = true;
 842                                 }
 843                                 ifChild = ifChild.nextSibling;
 844                         }
 845                 }
 846                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 847                         self.callMethod("org.freedesktop.DBus.Properties",
 848                                 "GetAll",
 849                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 850                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 851                 }
 852                 else {
 853                         self.propInterfaces = null;
 854                         if (successCB)
 855                                 successCB(self);
 856                 }
 857         }
 858
 859         // call Introspect on self
 860         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 861 };
 862
 863
 864 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 865
 866         var self = this;
 867
 868         self[method] = function() {
 869                 var args = [];
 870                 for (var i=0; i < nArgs; i++ )
 871                         args.push(arguments[i]);
 872                 return self.callMethod(ifName, method, args, signature);
 873         };
 874 };
 875
 876
 877 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 878
 879         var self = this;
 880
 881         var promise = new cloudeebus.Promise(function (resolver) {
 882                 function callMethodSuccessCB(str) {
 883                         try { // calling dbus hook object function for un-translated types
 884                                 var result = eval(str);
 885                                 resolver.fulfill(result[0], true);
 886                         }
 887                         catch (e) {
 888                                 var errorStr = cloudeebus.getError(e);
 889                                 cloudeebus.log("Method callback exception: " + errorStr);
 890                                 resolver.reject(errorStr, true);
 891                         }
 892                 }
 893
 894                 function callMethodErrorCB(error) {
 895                         var errorStr = cloudeebus.getError(error);
 896                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 897                         resolver.reject(errorStr, true);
 898                 }
 899
 900                 var arglist = [
 901                         self.busConnection.name,
 902                         self.busName,
 903                         self.objectPath,
 904                         ifName,
 905                         method,
 906                         JSON.stringify(args)
 907                 ];
 908
 909                 // call dbusSend with bus type, destination, object, message and arguments
 910                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 911         });
 912
 913         return promise;
 914 };
 915
 916
 917 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 918
 919         var self = this;
 920
 921         function signalHandler(id, data) {
 922                 if (handlerCB) {
 923                         try { // calling dbus hook object function for un-translated types
 924                                 handlerCB.apply(self, eval(data));
 925                         }
 926                         catch (e) {
 927                                 var errorStr = cloudeebus.getError(e);
 928                                 cloudeebus.log("Signal handler exception: " + errorStr);
 929                                 if (errorCB)
 930                                         errorCB(errorStr);
 931                         }
 932                 }
 933         }
 934
 935         function connectToSignalSuccessCB(str) {
 936                 try {
 937                         self.wampSession.subscribe(str, signalHandler);
 938                 }
 939                 catch (e) {
 940                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 941                 }
 942         }
 943
 944         function connectToSignalErrorCB(error) {
 945                 var errorStr = cloudeebus.getError(error);
 946                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 947                 if (errorCB)
 948                         errorCB(errorStr);
 949         }
 950
 951         var arglist = [
 952                 self.busConnection.name,
 953                 self.busName,
 954                 self.objectPath,
 955                 ifName,
 956                 signal
 957         ];
 958
 959         // call dbusSend with bus type, destination, object, message and arguments
 960         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 961 };
 962
 963
 964 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 965         try {
 966                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 967         }
 968         catch (e) {
 969                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 970         }
 971 };