cloudeebus/cloudeebus.js

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