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