cloudeebus/cloudeebus.js

   1 /******************************************************************************
   2  * Copyright 2012 Intel Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *****************************************************************************/
  16
  17
  18
  19 /*****************************************************************************/
  20
  21 var dbus = { // hook object for dbus types not translated by python-json
  22                 Double: function(value, level) {
  23                         return value;
  24                 }
  25 };
  26
  27
  28
  29 /*****************************************************************************/
  30
  31 var cloudeebus = window.cloudeebus = {
  32                 version: "0.5.99",
  33                 minVersion: "0.3.2"
  34 };
  35
  36 cloudeebus.reset = function() {
  37         cloudeebus.sessionBus = null;
  38         cloudeebus.systemBus = null;
  39         cloudeebus.wampSession = null;
  40         cloudeebus.uri = null;
  41 };
  42
  43
  44 cloudeebus.log = function(msg) {
  45 };
  46
  47 cloudeebus.getError = function(error) {
  48         if (error.desc && error.uri)
  49                 return error.desc + " : " + error.uri;
  50         if (error.desc)
  51                 return error.desc;
  52         if (error.uri)
  53                 return error.uri;
  54         if (error.name && error.message)
  55                 return error.name + " : " + error.message;
  56         if (error.message)
  57                 return error.message;
  58         if (error.name)
  59                 return error.name;
  60         return error;
  61 };
  62
  63 cloudeebus.versionCheck = function(version) {
  64         var ver = version.split(".");
  65         var min = cloudeebus.minVersion.split(".");
  66         for (var i=0; i<ver.length; i++) {
  67                 if (Number(ver[i]) > Number(min[i]))
  68                         return true;
  69                 if (Number(ver[i]) < Number(min[i]))
  70                         return false;
  71         }
  72         return true;
  73 };
  74
  75
  76 cloudeebus.connect = function(uri, manifest, successCB, errorCB) {
  77         cloudeebus.reset();
  78         cloudeebus.uri = uri;
  79
  80         function onCloudeebusVersionCheckCB(version) {
  81                 if (cloudeebus.versionCheck(version)) {
  82                         cloudeebus.log("Connected to " + cloudeebus.uri);
  83                         if (successCB)
  84                                 successCB();
  85                 } else {
  86                         var errorMsg = "Cloudeebus server version " + version + " unsupported, need version " + cloudeebus.minVersion + " or superior";
  87                         cloudeebus.log(errorMsg);
  88                         if (errorCB)
  89                                 errorCB(errorMsg);
  90                 }
  91         }
  92
  93         function onWAMPSessionAuthErrorCB(error) {
  94                 var errorStr = cloudeebus.getError(error);
  95                 cloudeebus.log("Authentication error: " + errorStr);
  96                 if (errorCB)
  97                         errorCB(errorStr);
  98         }
  99
 100         function onWAMPSessionAuthenticatedCB(permissions) {
 101                 cloudeebus.sessionBus = new cloudeebus.BusConnection("session", cloudeebus.wampSession);
 102                 cloudeebus.systemBus = new cloudeebus.BusConnection("system", cloudeebus.wampSession);
 103                 cloudeebus.wampSession.call("getVersion").then(onCloudeebusVersionCheckCB, errorCB);
 104         }
 105
 106         function onWAMPSessionChallengedCB(challenge) {
 107                 var signature = cloudeebus.wampSession.authsign(challenge, manifest.key);
 108                 cloudeebus.wampSession.auth(signature).then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 109         }
 110
 111         function onWAMPSessionConnectedCB(session) {
 112                 cloudeebus.wampSession = session;
 113                 if (manifest) {
 114                         cloudeebus.wampSession.authreq(
 115                                         manifest.name,
 116                                         {permissions: manifest.permissions,
 117                                                  services: manifest.services}
 118                                 ).then(onWAMPSessionChallengedCB, onWAMPSessionAuthErrorCB);
 119                 }
 120                 else
 121                         cloudeebus.wampSession.authreq().then(function() {
 122                                 cloudeebus.wampSession.auth().then(onWAMPSessionAuthenticatedCB, onWAMPSessionAuthErrorCB);
 123                                 }, onWAMPSessionAuthErrorCB);
 124         }
 125
 126         function onWAMPSessionErrorCB(code, reason) {
 127                 if (code == ab.CONNECTION_UNSUPPORTED) {
 128                         cloudeebus.log("Browser is not supported");
 129                 }
 130                 else {
 131                         cloudeebus.log("Failed to open session, code = " + code + ", reason = " + reason);
 132                 }
 133                 if (errorCB)
 134                         errorCB(reason);
 135         }
 136
 137         return ab.connect(cloudeebus.uri, onWAMPSessionConnectedCB, onWAMPSessionErrorCB);
 138 };
 139
 140
 141 cloudeebus.SessionBus = function() {
 142         return cloudeebus.sessionBus;
 143 };
 144
 145
 146 cloudeebus.SystemBus = function() {
 147         return cloudeebus.systemBus;
 148 };
 149
 150
 151
 152 /*****************************************************************************/
 153
 154 cloudeebus.BusConnection = function(name, session) {
 155         this.name = name;
 156         this.wampSession = session;
 157         return this;
 158 };
 159
 160
 161 cloudeebus.BusConnection.prototype.getObject = function(busName, objectPath, introspectCB, errorCB) {
 162         var proxy = new cloudeebus.ProxyObject(this.wampSession, this, busName, objectPath);
 163         if (introspectCB)
 164                 proxy._introspect(introspectCB, errorCB);
 165         return proxy;
 166 };
 167
 168
 169 cloudeebus.BusConnection.prototype.addService = function(serviceName) {
 170         var self = this;
 171
 172         if (!serviceName)
 173                 serviceName = "";
 174
 175         var promise = new cloudeebus.Promise(function (resolver) {
 176                 var cloudeebusService = new cloudeebus.Service(self.wampSession, self, serviceName);
 177
 178                 function ServiceAddedSuccessCB(serviceName) {
 179                         try { // calling dbus hook object function for un-translated types
 180                                 cloudeebusService.isCreated = true;
 181                                 resolver.fulfill(cloudeebusService, true);
 182                         }
 183                         catch (e) {
 184                                 var errorStr = cloudeebus.getError(e);
 185                                 cloudeebus.log("Method callback exception: " + errorStr);
 186                                 resolver.reject(errorStr, true);
 187                         }
 188                 }
 189
 190                 function ServiceAddedErrorCB(error) {
 191                         var errorStr = cloudeebus.getError(error);
 192                         cloudeebus.log("Error adding service method: " + self.name + ", error: " + errorStr);
 193                         resolver.reject(errorStr, true);
 194                 }
 195
 196                 var arglist = [
 197                     self.name,
 198                     serviceName
 199                     ];
 200
 201                 // call dbusSend with bus type, destination, object, message and arguments
 202                 self.wampSession.call("serviceAdd", arglist).then(ServiceAddedSuccessCB, ServiceAddedErrorCB);
 203         });
 204
 205         return promise;
 206 };
 207
 208
 209
 210 /*****************************************************************************/
 211 //Generic definition for an agent. An agent needs :
 212 //srvDbusName : the DBus parent service
 213 //objPath : a DBus path to access it
 214 //jsHdl : a Javascript handler to process methods,
 215 //xml : the xml which describe interface/methods/signals...
 216 cloudeebus.Agent = function(srvDbusName, objPath, jsHdl, xml) {
 217         this.srvName = srvDbusName;
 218         this.registered = false;
 219         this.xml = xml;
 220         this.objectPath = objPath;
 221         this.jsHdl = jsHdl;
 222         return this;
 223 };
 224
 225
 226 cloudeebus.Service = function(session, busConnection, name) {
 227         this.wampSession = session;
 228         this.busConnection = busConnection;
 229         this.name = name;
 230         this.agents = [];
 231         this.isCreated = false;
 232         return this;
 233 };
 234
 235
 236 cloudeebus.Service.prototype.remove = function() {
 237         var self = this;
 238
 239         var promise = new cloudeebus.Promise(function (resolver) {
 240                 function ServiceRemovedSuccessCB(serviceName) {
 241                         try {
 242                                 resolver.fulfill(serviceName, true);
 243                         }
 244                         catch (e) {
 245                                 var errorStr = cloudeebus.getError(e);
 246                                 cloudeebus.log("Method callback exception: " + errorStr);
 247                                 resolver.reject(errorStr, true);
 248                         }
 249                 }
 250
 251                 function ServiceRemovedErrorCB(error) {
 252                         var errorStr = cloudeebus.getError(error);
 253                         cloudeebus.log("Error removing service : " + self.name + ", error: " + errorStr);
 254                         self.promise.resolver.reject(errorStr, true);
 255                 }
 256
 257                 for (var idx in self.agents) {
 258                         if (self.agents[idx]) {
 259                                 self.removeAgent(self.agents[idx]);
 260                         }
 261                 }
 262
 263                 var arglist = [
 264                     self.name
 265                     ];
 266
 267                 // call dbusSend with bus type, destination, object, message and arguments
 268                 self.wampSession.call("serviceRelease", arglist).then(ServiceRemovedSuccessCB, ServiceRemovedErrorCB);
 269         });
 270
 271         return promise;
 272 };
 273
 274
 275 cloudeebus.Service.prototype._searchMethod = function(ifName, method, objectJS) {
 276
 277         var funcToCall = null;
 278
 279         // Check if 'objectJS' has a member 'interfaceProxies' with an interface named 'ifName'
 280         // and a method named 'method'
 281         if (objectJS.interfaceProxies && objectJS.interfaceProxies[ifName] &&
 282                 objectJS.interfaceProxies[ifName][method]) {
 283                 funcToCall = objectJS.interfaceProxies[ifName][method];
 284         } else {
 285                 // retrieve the method directly from 'root' of objectJs
 286                 funcToCall = objectJS[method];
 287         }
 288
 289         return funcToCall;
 290 };
 291
 292
 293 cloudeebus.Service.prototype._addMethod = function(ifName, method, agent) {
 294
 295         var service = this;
 296         var methodId = this.name + "#" + agent.objectPath + "#" + ifName + "#" + method;
 297         var funcToCall = this._searchMethod(ifName, method, agent.jsHdl);
 298
 299         if (funcToCall == null)
 300                 cloudeebus.log("Method " + method + " doesn't exist in Javascript object");
 301         else {
 302                 agent.jsHdl.wrapperFunc[method] = function() {
 303                         var result;
 304                         var methodId = arguments[0];
 305                         var callDict = {};
 306                         // affectation of callDict in eval, otherwise dictionary(='{}') interpreted as block of code by eval
 307                         eval("callDict = " + arguments[1]);
 308                         try {
 309                                 result = funcToCall.apply(agent.jsHdl, callDict.args);
 310                                 service._returnMethod(methodId, callDict.callIndex, true, result);
 311                         }
 312                         catch (e) {
 313                                 var errorStr = cloudeebus.getError(e);
 314                                 cloudeebus.log("Method " + ifName + "." + method + " call on " + agent.objectPath + " exception: " + errorStr);
 315                                 service._returnMethod(methodId, callDict.callIndex, false, errorStr);
 316                         }
 317                 };
 318                 agent.jsHdl.methodId[agent.objectPath].push(methodId);
 319                 this.wampSession.subscribe(methodId, agent.jsHdl.wrapperFunc[method]);
 320         }
 321 };
 322
 323
 324 cloudeebus.Service.prototype._addSignal = function(ifName, signal, agent) {
 325         var service = this;
 326         var methodExist = false;
 327
 328         if (agent.jsHdl.interfaceProxies && agent.jsHdl.interfaceProxies[ifName])
 329                 if (agent.jsHdl.interfaceProxies[ifName][signal]) {
 330                         methodExist = true;
 331                 } else {
 332                         agent.jsHdl.interfaceProxies[ifName][signal] = function() {
 333                                 service._emitSignal(agent.objectPath, signal, arguments[0]);
 334                         };
 335                 return;
 336         }
 337
 338         if ((agent.jsHdl[signal] == undefined || agent.jsHdl[signal] == null) && !methodExist)
 339                 agent.jsHdl[signal] = function() {
 340                         service._emitSignal(agent.objectPath, signal, arguments[0]);
 341                 };
 342         else
 343                 cloudeebus.log("Can not create new method to emit signal '" + signal + "' in object JS this method already exist!");
 344 };
 345
 346
 347 cloudeebus.Service.prototype._createWrapper = function(agent) {
 348         var self = this;
 349         var parser = new DOMParser();
 350         var xmlDoc = parser.parseFromString(agent.xml, "text/xml");
 351         var ifXml = xmlDoc.getElementsByTagName("interface");
 352         agent.jsHdl.wrapperFunc = [];
 353         agent.jsHdl.methodId = [];
 354         agent.jsHdl.methodId[agent.objectPath] = [];
 355         for (var i=0; i < ifXml.length; i++) {
 356                 var ifName = ifXml[i].attributes.getNamedItem("name").value;
 357                 var ifChild = ifXml[i].firstChild;
 358                 while (ifChild) {
 359                         if (ifChild.nodeName == "method") {
 360                                 var metName = ifChild.attributes.getNamedItem("name").value;
 361                                 self._addMethod(ifName, metName, agent);
 362                         }
 363                         if (ifChild.nodeName == "signal") {
 364                                 var metName = ifChild.attributes.getNamedItem("name").value;
 365                                 self._addSignal(ifName, metName, agent);
 366                         }
 367                         ifChild = ifChild.nextSibling;
 368                 }
 369         }
 370 };
 371
 372
 373 cloudeebus.Service.prototype.addAgent = function(agent) {
 374         var self = this;
 375
 376         var promise = new cloudeebus.Promise(function (resolver) {
 377                 function ServiceAddAgentSuccessCB(objPath) {
 378                         try { // calling dbus hook object function for un-translated types
 379                                 self.agents.push(agent);
 380                                 agent.registered = true;
 381                                 var result = [ objPath ];
 382                                 resolver.fulfill(result[0], true);
 383                         }
 384                         catch (e) {
 385                                 var errorStr = cloudeebus.getError(e);
 386                                 cloudeebus.log("Method callback exception: " + errorStr);
 387                                 resolver.reject(errorStr, true);
 388                         }
 389                 }
 390
 391                 function ServiceAddAgenterrorCB(error) {
 392                         var errorStr = cloudeebus.getError(error);
 393                         cloudeebus.log("Error adding agent : " + agent.objectPath + ", error: " + errorStr);
 394                         self.promise.resolver.reject(errorStr, true);
 395                 }
 396
 397                 try {
 398                         self._createWrapper(agent);
 399                 }
 400                 catch (e) {
 401                         var errorStr = cloudeebus.getError(e);
 402                         cloudeebus.log("Exception creating agent wrapper " + agent.objectPath + " : " + errorStr);
 403                         resolver.reject(errorStr, true);
 404                         return;
 405                 }
 406
 407                 var arglist = [
 408                     agent.objectPath,
 409                     agent.xml
 410                     ];
 411
 412                 // call dbusSend with bus type, destination, object, message and arguments
 413                 self.wampSession.call("serviceAddAgent", arglist).then(ServiceAddAgentSuccessCB, ServiceAddAgenterrorCB);
 414         });
 415
 416         return promise;
 417 };
 418
 419
 420 cloudeebus.Service.prototype._deleteWrapper = function(agent) {
 421         var objJs = agent.jsHdl;
 422         if (objJs.methodId[agent.objectPath]) {
 423                 for (var idx in objJs.methodId[agent.objectPath]) {
 424                         try {
 425                                 cloudeebus.log("unsubscribe " + objJs.methodId[agent.objectPath][idx]);
 426                                 this.wampSession.unsubscribe(objJs.methodId[agent.objectPath][idx]);
 427                                 objJs.methodId[agent.objectPath][idx] = null;
 428                         }
 429                         catch (e) {
 430                                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 431                         }
 432                 }
 433                 delete objJs.methodId[agent.objectPath];
 434         }
 435 };
 436
 437
 438 cloudeebus.Service.prototype.removeAgent = function(rmAgent, successCB, errorCB) {
 439         var self = this;
 440
 441         var promise = new cloudeebus.Promise(function (resolver) {
 442                 function ServiceRemoveAgentSuccessCB(agent) {
 443                         try { // calling dbus hook object function for un-translated types
 444                                 self.agents.push(agent);
 445                                 agent.registered = true;
 446                                 var result = [ agent ];
 447                                 resolver.fulfill(result[0], true);
 448                         }
 449                         catch (e) {
 450                                 var errorStr = cloudeebus.getError(e);
 451                                 cloudeebus.log("Method callback exception: " + errorStr);
 452                                 resolver.reject(errorStr, true);
 453                         }
 454                 }
 455
 456                 function ServiceRemoveAgentErrorCB(error) {
 457                         var errorStr = cloudeebus.getError(error);
 458                         cloudeebus.log("Error removing agent : " + rmAgent.objectPath + ", error: " + errorStr);
 459                         self.promise.resolver.reject(errorStr, true);
 460                 }
 461
 462                 try {
 463                         self._deleteWrapper(rmAgent);
 464                 }
 465                 catch (e) {
 466                         var errorStr = cloudeebus.getError(e);
 467                         cloudeebus.log("Exception removing wrapper of agent " + rmAgent.objectPath + " : " + errorStr);
 468                         errorCB(errorStr);
 469                 }
 470
 471                 var arglist = [
 472                     rmAgent.objectPath
 473                     ];
 474
 475                 // call dbusSend with bus type, destination, object, message and arguments
 476                 self.wampSession.call("serviceDelAgent", arglist).then(ServiceRemoveAgentSuccessCB, ServiceRemoveAgentErrorCB);
 477         });
 478
 479         return promise;
 480 };
 481
 482
 483 cloudeebus.Service.prototype._returnMethod = function(methodId, callIndex, success, result, successCB, errorCB) {
 484         var arglist = [
 485             methodId,
 486             callIndex,
 487             success,
 488             result
 489             ];
 490
 491         this.wampSession.call("returnMethod", arglist).then(successCB, errorCB);
 492 };
 493
 494
 495 cloudeebus.Service.prototype._emitSignal = function(objectPath, signalName, result, successCB, errorCB) {
 496         var arglist = [
 497             objectPath,
 498             signalName,
 499             result
 500             ];
 501
 502         this.wampSession.call("emitSignal", arglist).then(successCB, errorCB);
 503 };
 504
 505
 506
 507 /*****************************************************************************/
 508
 509 function _processWrappers(wrappers, value) {
 510         for (var i=0; i<wrappers.length; i++)
 511                 wrappers[i](value);
 512 }
 513
 514
 515 function _processWrappersAsync(wrappers, value) {
 516         var taskid = -1;
 517         function processAsyncOnce() {
 518                 _processWrappers(wrappers, value);
 519                 clearInterval(taskid);
 520         }
 521         taskid = setInterval(processAsyncOnce, 200);
 522 }
 523
 524
 525
 526 /*****************************************************************************/
 527
 528 cloudeebus.PromiseResolver = function(promise) {
 529         this.promise = promise;
 530         this.resolved = null;
 531     return this;
 532 };
 533
 534
 535 cloudeebus.PromiseResolver.prototype.resolve = function(value, sync) {
 536         if (this.resolved)
 537                 return;
 538
 539         var then = (value && value.then && value.then.apply) ? value.then : null;
 540         if (then) {
 541                 var self = this;
 542                 var fulfillCallback = function(arg) {
 543                         self.resolve(arg, true);
 544                 };
 545                 var rejectCallback = function(arg) {
 546                         self.reject(arg, true);
 547                 };
 548                 try {
 549                         then.apply(value, [fulfillCallback, rejectCallback]);
 550                 }
 551                 catch (e) {
 552                         this.reject(cloudeebus.getError(e), true);
 553                 }
 554         }
 555
 556         this.fulfill(value, sync);
 557 };
 558
 559
 560 cloudeebus.PromiseResolver.prototype.fulfill = function(value, sync) {
 561         if (this.resolved)
 562                 return;
 563
 564         var promise = this.promise;
 565         promise.state = "fulfilled";
 566         promise.result = value;
 567
 568         this.resolved = true;
 569         if (sync)
 570                 _processWrappers(promise._fulfillWrappers, value);
 571         else
 572                 _processWrappersAsync(promise._fulfillWrappers, value);
 573 };
 574
 575
 576 cloudeebus.PromiseResolver.prototype.reject = function(value, sync) {
 577         if (this.resolved)
 578                 return;
 579
 580         var promise = this.promise;
 581         promise.state = "rejected";
 582         promise.result = value;
 583
 584         this.resolved = true;
 585         if (sync)
 586                 _processWrappers(promise._rejectWrappers, value);
 587         else
 588                 _processWrappersAsync(promise._rejectWrappers, value);
 589 };
 590
 591
 592
 593 /*****************************************************************************/
 594
 595 cloudeebus.Promise = function(init) {
 596         this.state = "pending";
 597         this.result = null;
 598         this._fulfillWrappers = [];
 599         this._rejectWrappers = [];
 600         this.resolver = new cloudeebus.PromiseResolver(this);
 601         if (init) {
 602                 try {
 603                         init.apply(this, [this.resolver]);
 604                 }
 605                 catch (e) {
 606                         this.resolver.reject(cloudeebus.getError(e), true);
 607                 }
 608         }
 609     return this;
 610 };
 611
 612
 613 cloudeebus.Promise.prototype.appendWrappers = function(fulfillWrapper, rejectWrapper) {
 614         if (fulfillWrapper)
 615                 this._fulfillWrappers.push(fulfillWrapper);
 616         if (rejectWrapper)
 617                 this._rejectWrappers.push(rejectWrapper);
 618         if (this.state == "fulfilled")
 619                 _processWrappersAsync(this._fulfillWrappers, this.result);
 620         if (this.state == "rejected")
 621                 _processWrappersAsync(this._rejectWrappers, this.result);
 622 };
 623
 624
 625 cloudeebus.Promise.prototype.then = function(fulfillCB, rejectCB) {
 626         var promise = new cloudeebus.Promise();
 627         var resolver = promise.resolver;
 628         var fulfillWrapper, rejectWrapper;
 629
 630         if (fulfillCB)
 631                 fulfillWrapper = function(arg) {
 632                         try {
 633                                 var value = fulfillCB.apply(promise, [arg]);
 634                                 resolver.resolve(value, true);
 635                         }
 636                         catch (e) {
 637                                 resolver.reject(cloudeebus.getError(e), true);
 638                         }
 639                 };
 640         else
 641                 fulfillWrapper = function(arg) {
 642                         resolver.fulfill(arg, true);
 643                 };
 644
 645         if (rejectCB)
 646                 rejectWrapper = function(arg) {
 647                         try {
 648                                 var value = rejectCB.apply(promise, [arg]);
 649                                 resolver.resolve(value, true);
 650                         }
 651                         catch (e) {
 652                                 resolver.reject(cloudeebus.getError(e), true);
 653                         }
 654                 };
 655         else
 656                 rejectWrapper = function(arg) {
 657                         resolver.reject(arg, true);
 658                 };
 659
 660         this.appendWrappers(fulfillWrapper,rejectWrapper);
 661         return promise;
 662 };
 663
 664
 665 cloudeebus.Promise.prototype["catch"] = function(rejectCB) {
 666         return this.then(undefined,rejectCB);
 667 };
 668
 669
 670 cloudeebus.Promise.prototype.done = function(fulfillCB, rejectCB) {
 671         this.appendWrappers(fulfillCB,rejectCB);
 672 };
 673
 674
 675 cloudeebus.Promise.resolve = function(value) {
 676         var promise = new cloudeebus.Promise();
 677         promise.resolver.resolve(value);
 678         return promise;
 679 };
 680
 681
 682 cloudeebus.Promise.fulfill = function(value) {
 683         var promise = new cloudeebus.Promise();
 684         promise.resolver.fulfill(value);
 685         return promise;
 686 };
 687
 688
 689 cloudeebus.Promise.reject = function(value) {
 690         var promise = new cloudeebus.Promise();
 691         promise.resolver.reject(value);
 692         return promise;
 693 };
 694
 695
 696 cloudeebus.Promise.any = function() {
 697         var promise = new cloudeebus.Promise();
 698         var resolver = promise.resolver;
 699         var fulfillCallback = function(arg) {
 700                 resolver.resolve(arg, true);
 701         };
 702         var rejectCallback = function(arg) {
 703                 resolver.reject(arg, true);
 704         };
 705         if (arguments.length == 0)
 706                 resolver.resolve(undefined, true);
 707         else
 708                 for (i in arguments)
 709                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 710         return promise;
 711 };
 712
 713
 714 cloudeebus.Promise.every = function() {
 715         var promise = new cloudeebus.Promise();
 716         var resolver = promise.resolver;
 717         var index = 0;
 718         var countdown = arguments.length;
 719         var args = new Array(countdown);
 720         var rejectCallback = function(arg) {
 721                 resolver.reject(arg, true);
 722         };
 723         if (arguments.length == 0)
 724                 resolver.resolve(undefined, true);
 725         else
 726                 for (i in arguments) {
 727                         var fulfillCallback = function(arg) {
 728                                 args[index] = arg;
 729                                 countdown--;
 730                                 if (countdown == 0)
 731                                         resolver.resolve(args, true);
 732                         };
 733                         index++;
 734                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 735                 }
 736
 737         return promise;
 738 };
 739
 740
 741 cloudeebus.Promise.some = function() {
 742         var promise = new cloudeebus.Promise();
 743         var resolver = promise.resolver;
 744         var index = 0;
 745         var countdown = arguments.length;
 746         var args = new Array(countdown);
 747         var fulfillCallback = function(arg) {
 748                 resolver.resolve(arg, true);
 749         };
 750         if (arguments.length == 0)
 751                 resolver.resolve(undefined, true);
 752         else
 753                 for (i in arguments) {
 754                         var rejectCallback = function(arg) {
 755                                 args[index] = arg;
 756                                 countdown--;
 757                                 if (countdown == 0)
 758                                         resolver.reject(args, true);
 759                         };
 760                         index++;
 761                         Promise.resolve(arguments[i]).appendWrappers(fulfillCallback,rejectCallback);
 762                 }
 763
 764         return promise;
 765 };
 766
 767
 768
 769 /*****************************************************************************/
 770
 771 cloudeebus.ProxyObject = function(session, busConnection, busName, objectPath) {
 772         this.wampSession = session;
 773         this.busConnection = busConnection;
 774         this.busName = busName;
 775         this.objectPath = objectPath;
 776         this.interfaceProxies = {};
 777         return this;
 778 };
 779
 780
 781 cloudeebus.ProxyObject.prototype.getInterface = function(ifName) {
 782         return this.interfaceProxies[ifName];
 783 };
 784
 785
 786 cloudeebus.ProxyObject.prototype._introspect = function(successCB, errorCB) {
 787
 788         var self = this;
 789
 790         function getAllPropertiesSuccessCB(props) {
 791                 var ifProxy = self.interfaceProxies[self.propInterfaces[self.propInterfaces.length-1]];
 792                 for (var prop in props)
 793                         ifProxy[prop] = self[prop] = props[prop];
 794                 getAllPropertiesNextInterfaceCB();
 795         }
 796
 797         function getAllPropertiesNextInterfaceCB() {
 798                 self.propInterfaces.pop();
 799                 if (self.propInterfaces.length > 0)
 800                         self.callMethod("org.freedesktop.DBus.Properties",
 801                                 "GetAll",
 802                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 803                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 804                 else {
 805                         self.propInterfaces = null;
 806                         if (successCB)
 807                                 successCB(self);
 808                 }
 809         }
 810
 811         function introspectSuccessCB(str) {
 812                 var parser = new DOMParser();
 813                 var xmlDoc = parser.parseFromString(str, "text/xml");
 814                 var interfaces = xmlDoc.getElementsByTagName("interface");
 815                 self.propInterfaces = [];
 816                 var supportDBusProperties = false;
 817                 for (var i=0; i < interfaces.length; i++) {
 818                         var ifName = interfaces[i].attributes.getNamedItem("name").value;
 819                         self.interfaceProxies[ifName] = new cloudeebus.ProxyObject(self.wampSession, self.busConnection, self.busName, self.objectPath);
 820                         if (ifName == "org.freedesktop.DBus.Properties")
 821                                 supportDBusProperties = true;
 822                         var hasProperties = false;
 823                         var ifChild = interfaces[i].firstChild;
 824                         while (ifChild) {
 825                                 if (ifChild.nodeName == "method") {
 826                                         var nArgs = 0;
 827                                         var signature = "";
 828                                         var metChild = ifChild.firstChild;
 829                                         while (metChild) {
 830                                                 if (metChild.nodeName == "arg" &&
 831                                                         metChild.attributes.getNamedItem("direction").value == "in") {
 832                                                                 signature += metChild.attributes.getNamedItem("type").value;
 833                                                                 nArgs++;
 834                                                 }
 835                                                 metChild = metChild.nextSibling;
 836                                         }
 837                                         var metName = ifChild.attributes.getNamedItem("name").value;
 838                                         if (!self[metName])
 839                                                 self._addMethod(ifName, metName, nArgs, signature);
 840                                         self.interfaceProxies[ifName]._addMethod(ifName, metName, nArgs, signature);
 841                                 }
 842                                 else if (ifChild.nodeName == "property") {
 843                                         if (!hasProperties)
 844                                                 self.propInterfaces.push(ifName);
 845                                         hasProperties = true;
 846                                 }
 847                                 ifChild = ifChild.nextSibling;
 848                         }
 849                 }
 850                 if (supportDBusProperties && self.propInterfaces.length > 0) {
 851                         self.callMethod("org.freedesktop.DBus.Properties",
 852                                 "GetAll",
 853                                 [self.propInterfaces[self.propInterfaces.length-1]]).then(getAllPropertiesSuccessCB,
 854                                 errorCB ? errorCB : getAllPropertiesNextInterfaceCB);
 855                 }
 856                 else {
 857                         self.propInterfaces = null;
 858                         if (successCB)
 859                                 successCB(self);
 860                 }
 861         }
 862
 863         // call Introspect on self
 864         self.callMethod("org.freedesktop.DBus.Introspectable", "Introspect", []).then(introspectSuccessCB, errorCB);
 865 };
 866
 867
 868 cloudeebus.ProxyObject.prototype._addMethod = function(ifName, method, nArgs, signature) {
 869
 870         var self = this;
 871
 872         self[method] = function() {
 873                 var args = [];
 874                 for (var i=0; i < nArgs; i++ )
 875                         args.push(arguments[i]);
 876                 return self.callMethod(ifName, method, args, signature);
 877         };
 878 };
 879
 880
 881 cloudeebus.ProxyObject.prototype.callMethod = function(ifName, method, args, signature) {
 882
 883         var self = this;
 884
 885         var promise = new cloudeebus.Promise(function (resolver) {
 886                 function callMethodSuccessCB(str) {
 887                         try { // calling dbus hook object function for un-translated types
 888                                 var result = eval(str);
 889                                 resolver.fulfill(result[0], true);
 890                         }
 891                         catch (e) {
 892                                 var errorStr = cloudeebus.getError(e);
 893                                 cloudeebus.log("Method callback exception: " + errorStr);
 894                                 resolver.reject(errorStr, true);
 895                         }
 896                 }
 897
 898                 function callMethodErrorCB(error) {
 899                         var errorStr = cloudeebus.getError(error);
 900                         cloudeebus.log("Error calling method: " + method + " on object: " + self.objectPath + " : " + errorStr);
 901                         resolver.reject(errorStr, true);
 902                 }
 903
 904                 var arglist = [
 905                         self.busConnection.name,
 906                         self.busName,
 907                         self.objectPath,
 908                         ifName,
 909                         method,
 910                         JSON.stringify(args)
 911                 ];
 912
 913                 // call dbusSend with bus type, destination, object, message and arguments
 914                 self.wampSession.call("dbusSend", arglist).then(callMethodSuccessCB, callMethodErrorCB);
 915         });
 916
 917         return promise;
 918 };
 919
 920
 921 cloudeebus.ProxyObject.prototype.connectToSignal = function(ifName, signal, handlerCB, errorCB) {
 922
 923         var self = this;
 924
 925         function signalHandler(id, data) {
 926                 if (handlerCB) {
 927                         try { // calling dbus hook object function for un-translated types
 928                                 handlerCB.apply(self, eval(data));
 929                         }
 930                         catch (e) {
 931                                 var errorStr = cloudeebus.getError(e);
 932                                 cloudeebus.log("Signal handler exception: " + errorStr);
 933                                 if (errorCB)
 934                                         errorCB(errorStr);
 935                         }
 936                 }
 937         }
 938
 939         function connectToSignalSuccessCB(str) {
 940                 try {
 941                         self.wampSession.subscribe(str, signalHandler);
 942                 }
 943                 catch (e) {
 944                         cloudeebus.log("Subscribe error: " + cloudeebus.getError(e));
 945                 }
 946         }
 947
 948         function connectToSignalErrorCB(error) {
 949                 var errorStr = cloudeebus.getError(error);
 950                 cloudeebus.log("Error connecting to signal: " + signal + " on object: " + self.objectPath + " : " + errorStr);
 951                 if (errorCB)
 952                         errorCB(errorStr);
 953         }
 954
 955         var arglist = [
 956                 self.busConnection.name,
 957                 self.busName,
 958                 self.objectPath,
 959                 ifName,
 960                 signal
 961         ];
 962
 963         // call dbusSend with bus type, destination, object, message and arguments
 964         self.wampSession.call("dbusRegister", arglist).then(connectToSignalSuccessCB, connectToSignalErrorCB);
 965 };
 966
 967
 968 cloudeebus.ProxyObject.prototype.disconnectSignal = function(ifName, signal) {
 969         try {
 970                 this.wampSession.unsubscribe(this.busConnection.name + "#" + this.busName + "#" + this.objectPath + "#" + ifName + "#" + signal);
 971         }
 972         catch (e) {
 973                 cloudeebus.log("Unsubscribe error: " + cloudeebus.getError(e));
 974         }
 975 };