cloudeebus/cloudeebus.js

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