src/com/owncloud/android/services/OperationsService.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2014 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17
  18 package com.owncloud.android.services;
  19
  20 import java.io.IOException;
  21 import java.util.Iterator;
  22 import java.util.concurrent.ConcurrentHashMap;
  23 import java.util.concurrent.ConcurrentLinkedQueue;
  24 import java.util.concurrent.ConcurrentMap;
  25
  26 import com.owncloud.android.R;
  27 import com.owncloud.android.datamodel.FileDataStorageManager;
  28 import com.owncloud.android.lib.common.OwnCloudClientFactory;
  29 import com.owncloud.android.lib.common.OwnCloudClient;
  30 import com.owncloud.android.lib.common.operations.OnRemoteOperationListener;
  31 import com.owncloud.android.lib.common.operations.RemoteOperation;
  32 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  33 import com.owncloud.android.lib.resources.files.ExistenceCheckRemoteOperation;
  34 import com.owncloud.android.lib.resources.shares.ShareType;
  35 import com.owncloud.android.lib.resources.users.GetRemoteUserNameOperation;
  36 import com.owncloud.android.operations.common.SyncOperation;
  37 import com.owncloud.android.operations.CreateShareOperation;
  38 import com.owncloud.android.operations.GetServerInfoOperation;
  39 import com.owncloud.android.operations.OAuth2GetAccessToken;
  40 import com.owncloud.android.operations.RemoveFileOperation;
  41 import com.owncloud.android.operations.RenameFileOperation;
  42 import com.owncloud.android.operations.UnshareLinkOperation;
  43 import com.owncloud.android.utils.Log_OC;
  44
  45 import android.accounts.Account;
  46 import android.accounts.AccountsException;
  47 import android.app.Service;
  48 import android.content.Intent;
  49 import android.net.Uri;
  50 import android.os.Binder;
  51 import android.os.Handler;
  52 import android.os.HandlerThread;
  53 import android.os.IBinder;
  54 import android.os.Looper;
  55 import android.os.Message;
  56 import android.os.Process;
  57 import android.util.Pair;
  58
  59 public class OperationsService extends Service {
  60
  61     private static final String TAG = OperationsService.class.getSimpleName();
  62
  63     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  64     public static final String EXTRA_SERVER_URL = "SERVER_URL";
  65     public static final String EXTRA_AUTH_TOKEN_TYPE = "AUTH_TOKEN_TYPE";
  66     public static final String EXTRA_OAUTH2_QUERY_PARAMETERS = "OAUTH2_QUERY_PARAMETERS";
  67     public static final String EXTRA_REMOTE_PATH = "REMOTE_PATH";
  68     public static final String EXTRA_SEND_INTENT = "SEND_INTENT";
  69     public static final String EXTRA_NEWNAME = "NEWNAME";
  70     public static final String EXTRA_REMOVE_LOCAL_COPY = "REMOVE_LOCAL_COPY";
  71     public static final String EXTRA_RESULT = "RESULT";
  72
  73     // TODO review if ALL OF THEM are necessary
  74     public static final String EXTRA_WEBDAV_PATH = "WEBDAV_PATH";
  75     public static final String EXTRA_SUCCESS_IF_ABSENT = "SUCCESS_IF_ABSENT";
  76     public static final String EXTRA_USERNAME = "USERNAME";
  77     public static final String EXTRA_PASSWORD = "PASSWORD";
  78     public static final String EXTRA_AUTH_TOKEN = "AUTH_TOKEN";
  79     public static final String EXTRA_FOLLOW_REDIRECTS = "FOLLOW_REDIRECTS";
  80     public static final String EXTRA_COOKIE = "COOKIE";
  81
  82     public static final String ACTION_CREATE_SHARE = "CREATE_SHARE";
  83     public static final String ACTION_UNSHARE = "UNSHARE";
  84     public static final String ACTION_GET_SERVER_INFO = "GET_SERVER_INFO";
  85     public static final String ACTION_OAUTH2_GET_ACCESS_TOKEN = "OAUTH2_GET_ACCESS_TOKEN";
  86     public static final String ACTION_EXISTENCE_CHECK = "EXISTENCE_CHECK";
  87     public static final String ACTION_GET_USER_NAME = "GET_USER_NAME";
  88     public static final String ACTION_RENAME = "RENAME";
  89     public static final String ACTION_REMOVE = "REMOVE";
  90
  91     public static final String ACTION_OPERATION_ADDED = OperationsService.class.getName() + ".OPERATION_ADDED";
  92     public static final String ACTION_OPERATION_FINISHED = OperationsService.class.getName() + ".OPERATION_FINISHED";
  93
  94     private ConcurrentLinkedQueue<Pair<Target, RemoteOperation>> mPendingOperations =
  95             new ConcurrentLinkedQueue<Pair<Target, RemoteOperation>>();
  96
  97     /*
  98     private ConcurrentMap<Integer, RemoteOperationResult> mOperationResults =
  99             new ConcurrentHashMap<Integer, RemoteOperationResult>();
 100      */
 101
 102     private ConcurrentMap<Integer, Pair<RemoteOperation, RemoteOperationResult>>
 103         mUndispatchedFinishedOperations =
 104             new ConcurrentHashMap<Integer, Pair<RemoteOperation, RemoteOperationResult>>();
 105
 106     private static class Target {
 107         public Uri mServerUrl = null;
 108         public Account mAccount = null;
 109         public String mWebDavUrl = null;
 110         public String mUsername = null;
 111         public String mPassword = null;
 112         public String mAuthToken = null;
 113         public boolean mFollowRedirects = true;
 114         public String mCookie = null;
 115
 116         public Target(Account account, Uri serverUrl, String webdavUrl, String username, String password, String authToken,
 117                 boolean followRedirects, String cookie) {
 118             mAccount = account;
 119             mServerUrl = serverUrl;
 120             mWebDavUrl = webdavUrl;
 121             mUsername = username;
 122             mPassword = password;
 123             mAuthToken = authToken;
 124             mFollowRedirects = followRedirects;
 125             mCookie = cookie;
 126         }
 127     }
 128
 129     private Looper mServiceLooper;
 130     private ServiceHandler mServiceHandler;
 131     private OperationsServiceBinder mBinder;
 132     private OwnCloudClient mOwnCloudClient = null;
 133     private Target mLastTarget = null;
 134     private FileDataStorageManager mStorageManager;
 135     private RemoteOperation mCurrentOperation = null;
 136
 137
 138     /**
 139      * Service initialization
 140      */
 141     @Override
 142     public void onCreate() {
 143         super.onCreate();
 144         HandlerThread thread = new HandlerThread("Operations service thread", Process.THREAD_PRIORITY_BACKGROUND);
 145         thread.start();
 146         mServiceLooper = thread.getLooper();
 147         mServiceHandler = new ServiceHandler(mServiceLooper, this);
 148         mBinder = new OperationsServiceBinder();
 149     }
 150
 151
 152     /**
 153      * Entry point to add a new operation to the queue of operations.
 154      *
 155      * New operations are added calling to startService(), resulting in a call to this method.
 156      * This ensures the service will keep on working although the caller activity goes away.
 157      *
 158      * IMPORTANT: the only operations performed here right now is {@link GetSharedFilesOperation}. The class
 159      * is taking advantage of it due to time constraints.
 160      */
 161     @Override
 162     public int onStartCommand(Intent intent, int flags, int startId) {
 163         //Log_OC.wtf(TAG, "onStartCommand init" );
 164         Message msg = mServiceHandler.obtainMessage();
 165         msg.arg1 = startId;
 166         mServiceHandler.sendMessage(msg);
 167         //Log_OC.wtf(TAG, "onStartCommand end" );
 168         return START_NOT_STICKY;
 169     }
 170
 171     @Override
 172     public void onDestroy() {
 173         //Log_OC.wtf(TAG, "onDestroy init" );
 174         super.onDestroy();
 175         //Log_OC.wtf(TAG, "Clear mUndispatchedFinisiedOperations" );
 176         mUndispatchedFinishedOperations.clear();
 177         //Log_OC.wtf(TAG, "onDestroy end" );
 178     }
 179
 180
 181     /**
 182      * Provides a binder object that clients can use to perform actions on the queue of operations,
 183      * except the addition of new operations.
 184      */
 185     @Override
 186     public IBinder onBind(Intent intent) {
 187         //Log_OC.wtf(TAG, "onBind" );
 188         return mBinder;
 189     }
 190
 191
 192     /**
 193      * Called when ALL the bound clients were unbound.
 194      */
 195     @Override
 196     public boolean onUnbind(Intent intent) {
 197         ((OperationsServiceBinder)mBinder).clearListeners();
 198         return false;   // not accepting rebinding (default behaviour)
 199     }
 200
 201
 202     /**
 203      *  Binder to let client components to perform actions on the queue of operations.
 204      *
 205      *  It provides by itself the available operations.
 206      */
 207     public class OperationsServiceBinder extends Binder /* implements OnRemoteOperationListener */ {
 208
 209         /**
 210          * Map of listeners that will be reported about the end of operations from a {@link OperationsServiceBinder} instance
 211          */
 212         private ConcurrentMap<OnRemoteOperationListener, Handler> mBoundListeners =
 213                 new ConcurrentHashMap<OnRemoteOperationListener, Handler>();
 214
 215         /**
 216          * Cancels an operation
 217          *
 218          * TODO
 219          */
 220         public void cancel() {
 221             // TODO
 222         }
 223
 224
 225         public void clearListeners() {
 226
 227             mBoundListeners.clear();
 228         }
 229
 230
 231         /**
 232          * Adds a listener interested in being reported about the end of operations.
 233          *
 234          * @param listener          Object to notify about the end of operations.
 235          * @param callbackHandler   {@link Handler} to access the listener without breaking Android threading protection.
 236          */
 237         public void addOperationListener (OnRemoteOperationListener listener, Handler callbackHandler) {
 238             synchronized (mBoundListeners) {
 239                 mBoundListeners.put(listener, callbackHandler);
 240             }
 241         }
 242
 243
 244         /**
 245          * Removes a listener from the list of objects interested in the being reported about the end of operations.
 246          *
 247          * @param listener      Object to notify about progress of transfer.
 248          */
 249         public void removeOperationListener (OnRemoteOperationListener listener) {
 250             synchronized (mBoundListeners) {
 251                 mBoundListeners.remove(listener);
 252             }
 253         }
 254
 255
 256         /**
 257          * TODO - IMPORTANT: update implementation when more operations are moved into the service
 258          *
 259          * @return  'True' when an operation that enforces the user to wait for completion is in process.
 260          */
 261         public boolean isPerformingBlockingOperation() {
 262             return (!mPendingOperations.isEmpty());
 263         }
 264
 265
 266         /**
 267          * Creates and adds to the queue a new operation, as described by operationIntent
 268          *
 269          * @param operationIntent       Intent describing a new operation to queue and execute.
 270          * @return                      Identifier of the operation created, or null if failed.
 271          */
 272         public long newOperation(Intent operationIntent) {
 273             RemoteOperation operation = null;
 274             Target target = null;
 275             try {
 276                 if (!operationIntent.hasExtra(EXTRA_ACCOUNT) &&
 277                         !operationIntent.hasExtra(EXTRA_SERVER_URL)) {
 278                     Log_OC.e(TAG, "Not enough information provided in intent");
 279
 280                 } else {
 281                     Account account = operationIntent.getParcelableExtra(EXTRA_ACCOUNT);
 282                     String serverUrl = operationIntent.getStringExtra(EXTRA_SERVER_URL);
 283                     String webDavPath = operationIntent.getStringExtra(EXTRA_WEBDAV_PATH);
 284                     String webDavUrl = serverUrl + webDavPath;
 285                     String username = operationIntent.getStringExtra(EXTRA_USERNAME);
 286                     String password = operationIntent.getStringExtra(EXTRA_PASSWORD);
 287                     String authToken = operationIntent.getStringExtra(EXTRA_AUTH_TOKEN);
 288                     boolean followRedirects = operationIntent.getBooleanExtra(EXTRA_FOLLOW_REDIRECTS, true);
 289                     String cookie = operationIntent.getStringExtra(EXTRA_COOKIE);
 290                     target = new Target(
 291                             account,
 292                             (serverUrl == null) ? null : Uri.parse(serverUrl),
 293                             ((webDavPath == null) || (serverUrl == null)) ? null : webDavUrl,
 294                             username,
 295                             password,
 296                             authToken,
 297                             followRedirects,
 298                             cookie
 299                     );
 300
 301                     String action = operationIntent.getAction();
 302                     if (action.equals(ACTION_CREATE_SHARE)) {  // Create Share
 303                         String remotePath = operationIntent.getStringExtra(EXTRA_REMOTE_PATH);
 304                         Intent sendIntent = operationIntent.getParcelableExtra(EXTRA_SEND_INTENT);
 305                         if (remotePath.length() > 0) {
 306                             operation = new CreateShareOperation(remotePath, ShareType.PUBLIC_LINK,
 307                                     "", false, "", 1, sendIntent);
 308                         }
 309
 310                     } else if (action.equals(ACTION_UNSHARE)) {  // Unshare file
 311                         String remotePath = operationIntent.getStringExtra(EXTRA_REMOTE_PATH);
 312                         if (remotePath.length() > 0) {
 313                             operation = new UnshareLinkOperation(
 314                                     remotePath,
 315                                     OperationsService.this);
 316                         }
 317
 318                     } else if (action.equals(ACTION_GET_SERVER_INFO)) {
 319                         // check OC server and get basic information from it
 320                         String authTokenType =
 321                                 operationIntent.getStringExtra(EXTRA_AUTH_TOKEN_TYPE);
 322                         operation = new GetServerInfoOperation(
 323                                 serverUrl, authTokenType, OperationsService.this);
 324
 325                     } else if (action.equals(ACTION_OAUTH2_GET_ACCESS_TOKEN)) {
 326                         /// GET ACCESS TOKEN to the OAuth server
 327                         String oauth2QueryParameters =
 328                                 operationIntent.getStringExtra(EXTRA_OAUTH2_QUERY_PARAMETERS);
 329                         operation = new OAuth2GetAccessToken(
 330                                 getString(R.string.oauth2_client_id),
 331                                 getString(R.string.oauth2_redirect_uri),
 332                                 getString(R.string.oauth2_grant_type),
 333                                 oauth2QueryParameters);
 334
 335                     } else if (action.equals(ACTION_EXISTENCE_CHECK)) {
 336                         // Existence Check
 337                         String remotePath = operationIntent.getStringExtra(EXTRA_REMOTE_PATH);
 338                         boolean successIfAbsent = operationIntent.getBooleanExtra(EXTRA_SUCCESS_IF_ABSENT, true);
 339                         operation = new ExistenceCheckRemoteOperation(remotePath, OperationsService.this, successIfAbsent);
 340
 341                     } else if (action.equals(ACTION_GET_USER_NAME)) {
 342                         // Get User Name
 343                         operation = new GetRemoteUserNameOperation();
 344
 345                     } else if (action.equals(ACTION_RENAME)) {
 346                         // Rename file or folder
 347                         String remotePath = operationIntent.getStringExtra(EXTRA_REMOTE_PATH);
 348                         String newName = operationIntent.getStringExtra(EXTRA_NEWNAME);
 349                         operation = new RenameFileOperation(remotePath, account, newName);
 350
 351                     } else if (action.equals(ACTION_REMOVE)) {
 352                         // Remove file or folder
 353                         String remotePath = operationIntent.getStringExtra(EXTRA_REMOTE_PATH);
 354                         boolean removeLocalCopy = operationIntent.getBooleanExtra(EXTRA_REMOVE_LOCAL_COPY, true);
 355                         operation = new RemoveFileOperation(remotePath, removeLocalCopy);
 356                     }
 357                 }
 358
 359             } catch (IllegalArgumentException e) {
 360                 Log_OC.e(TAG, "Bad information provided in intent: " + e.getMessage());
 361                 operation = null;
 362             }
 363
 364             if (operation != null) {
 365                 mPendingOperations.add(new Pair<Target , RemoteOperation>(target, operation));
 366                 startService(new Intent(OperationsService.this, OperationsService.class));
 367                 //Log_OC.wtf(TAG, "New operation added, opId: " + operation.hashCode());
 368                 // better id than hash? ; should be good enough by the time being
 369                 return operation.hashCode();
 370
 371             } else {
 372                 //Log_OC.wtf(TAG, "New operation failed, returned Long.MAX_VALUE");
 373                 return Long.MAX_VALUE;
 374             }
 375         }
 376
 377         public void dispatchResultIfFinished(int operationId, OnRemoteOperationListener listener) {
 378             Pair<RemoteOperation, RemoteOperationResult> undispatched =
 379                     mUndispatchedFinishedOperations.remove(operationId);
 380             if (undispatched != null) {
 381                 listener.onRemoteOperationFinish(undispatched.first, undispatched.second);
 382                 //Log_OC.wtf(TAG, "Sending callback later");
 383             } else {
 384                 //Log_OC.wtf(TAG, "Not finished yet");
 385             }
 386         }
 387
 388     }
 389
 390
 391     /**
 392      * Operations worker. Performs the pending operations in the order they were requested.
 393      *
 394      * Created with the Looper of a new thread, started in {@link OperationsService#onCreate()}.
 395      */
 396     private static class ServiceHandler extends Handler {
 397         // don't make it a final class, and don't remove the static ; lint will warn about a possible memory leak
 398         OperationsService mService;
 399         public ServiceHandler(Looper looper, OperationsService service) {
 400             super(looper);
 401             if (service == null) {
 402                 throw new IllegalArgumentException("Received invalid NULL in parameter 'service'");
 403             }
 404             mService = service;
 405         }
 406
 407         @Override
 408         public void handleMessage(Message msg) {
 409             mService.nextOperation();
 410             mService.stopSelf(msg.arg1);
 411         }
 412     }
 413
 414
 415     /**
 416      * Performs the next operation in the queue
 417      */
 418     private void nextOperation() {
 419
 420         //Log_OC.wtf(TAG, "nextOperation init" );
 421
 422         Pair<Target, RemoteOperation> next = null;
 423         synchronized(mPendingOperations) {
 424             next = mPendingOperations.peek();
 425         }
 426
 427         if (next != null) {
 428
 429             mCurrentOperation = next.second;
 430             RemoteOperationResult result = null;
 431             try {
 432                 /// prepare client object to send the request to the ownCloud server
 433                 if (mLastTarget == null || !mLastTarget.equals(next.first)) {
 434                     mLastTarget = next.first;
 435                     if (mLastTarget.mAccount != null) {
 436                         mOwnCloudClient = OwnCloudClientFactory.createOwnCloudClient(mLastTarget.mAccount, getApplicationContext());
 437                         mStorageManager = new FileDataStorageManager(mLastTarget.mAccount, getContentResolver());
 438                     } else {
 439                         mOwnCloudClient = OwnCloudClientFactory.createOwnCloudClient(mLastTarget.mServerUrl, getApplicationContext(),
 440                                 mLastTarget.mFollowRedirects);    // this is not good enough
 441                         if (mLastTarget.mWebDavUrl != null) {
 442                             mOwnCloudClient.setWebdavUri(Uri.parse(mLastTarget.mWebDavUrl));
 443                         }
 444                         if (mLastTarget.mUsername != null && mLastTarget.mPassword != null) {
 445                             mOwnCloudClient.setBasicCredentials(mLastTarget.mUsername, mLastTarget.mPassword);
 446                         } else if (mLastTarget.mAuthToken != null) {
 447                             mOwnCloudClient.setBearerCredentials(mLastTarget.mAuthToken);
 448                         } else if (mLastTarget.mCookie != null) {
 449                             mOwnCloudClient.setSsoSessionCookie(mLastTarget.mCookie);
 450                         }
 451                         mStorageManager = null;
 452                     }
 453                 }
 454
 455                 /// perform the operation
 456                 if (mCurrentOperation instanceof SyncOperation) {
 457                     result = ((SyncOperation)mCurrentOperation).execute(mOwnCloudClient, mStorageManager);
 458                 } else {
 459                     result = mCurrentOperation.execute(mOwnCloudClient);
 460                 }
 461
 462             } catch (AccountsException e) {
 463                 if (mLastTarget.mAccount == null) {
 464                     Log_OC.e(TAG, "Error while trying to get autorization for a NULL account", e);
 465                 } else {
 466                     Log_OC.e(TAG, "Error while trying to get autorization for " + mLastTarget.mAccount.name, e);
 467                 }
 468                 result = new RemoteOperationResult(e);
 469
 470             } catch (IOException e) {
 471                 if (mLastTarget.mAccount == null) {
 472                     Log_OC.e(TAG, "Error while trying to get autorization for a NULL account", e);
 473                 } else {
 474                     Log_OC.e(TAG, "Error while trying to get autorization for " + mLastTarget.mAccount.name, e);
 475                 }
 476                 result = new RemoteOperationResult(e);
 477             } catch (Exception e) {
 478                 if (mLastTarget.mAccount == null) {
 479                     Log_OC.e(TAG, "Unexpected error for a NULL account", e);
 480                 } else {
 481                     Log_OC.e(TAG, "Unexpected error for " + mLastTarget.mAccount.name, e);
 482                 }
 483                 result = new RemoteOperationResult(e);
 484
 485             } finally {
 486                 synchronized(mPendingOperations) {
 487                     mPendingOperations.poll();
 488                 }
 489             }
 490
 491             //sendBroadcastOperationFinished(mLastTarget, mCurrentOperation, result);
 492             dispatchResultToOperationListeners(mLastTarget, mCurrentOperation, result);
 493         }
 494     }
 495
 496
 497     /**
 498      * Sends a broadcast when a new operation is added to the queue.
 499      *
 500      * Local broadcasts are only delivered to activities in the same process, but can't be done sticky :\
 501      *
 502      * @param target            Account or URL pointing to an OC server.
 503      * @param operation         Added operation.
 504      */
 505     private void sendBroadcastNewOperation(Target target, RemoteOperation operation) {
 506         Intent intent = new Intent(ACTION_OPERATION_ADDED);
 507         if (target.mAccount != null) {
 508             intent.putExtra(EXTRA_ACCOUNT, target.mAccount);
 509         } else {
 510             intent.putExtra(EXTRA_SERVER_URL, target.mServerUrl);
 511         }
 512         //LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
 513         //lbm.sendBroadcast(intent);
 514         sendStickyBroadcast(intent);
 515     }
 516
 517
 518     // TODO - maybe add a notification for real start of operations
 519
 520     /**
 521      * Sends a LOCAL broadcast when an operations finishes in order to the interested activities can update their view
 522      *
 523      * Local broadcasts are only delivered to activities in the same process.
 524      *
 525      * @param target            Account or URL pointing to an OC server.
 526      * @param operation         Finished operation.
 527      * @param result            Result of the operation.
 528      */
 529     private void sendBroadcastOperationFinished(Target target, RemoteOperation operation, RemoteOperationResult result) {
 530         Intent intent = new Intent(ACTION_OPERATION_FINISHED);
 531         intent.putExtra(EXTRA_RESULT, result);
 532         if (target.mAccount != null) {
 533             intent.putExtra(EXTRA_ACCOUNT, target.mAccount);
 534         } else {
 535             intent.putExtra(EXTRA_SERVER_URL, target.mServerUrl);
 536         }
 537         //LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
 538         //lbm.sendBroadcast(intent);
 539         sendStickyBroadcast(intent);
 540     }
 541
 542
 543     /**
 544      * Notifies the currently subscribed listeners about the end of an operation.
 545      *
 546      * @param target            Account or URL pointing to an OC server.
 547      * @param operation         Finished operation.
 548      * @param result            Result of the operation.
 549      */
 550     private void dispatchResultToOperationListeners(
 551             Target target, final RemoteOperation operation, final RemoteOperationResult result) {
 552         int count = 0;
 553         Iterator<OnRemoteOperationListener> listeners = mBinder.mBoundListeners.keySet().iterator();
 554         while (listeners.hasNext()) {
 555             final OnRemoteOperationListener listener = listeners.next();
 556             final Handler handler = mBinder.mBoundListeners.get(listener);
 557             if (handler != null) {
 558                 handler.post(new Runnable() {
 559                     @Override
 560                     public void run() {
 561                         listener.onRemoteOperationFinish(operation, result);
 562                     }
 563                 });
 564                 count += 1;
 565             }
 566         }
 567         if (count == 0) {
 568             //mOperationResults.put(operation.hashCode(), result);
 569             Pair<RemoteOperation, RemoteOperationResult> undispatched =
 570                     new Pair<RemoteOperation, RemoteOperationResult>(operation, result);
 571             mUndispatchedFinishedOperations.put(operation.hashCode(), undispatched);
 572         }
 573         Log_OC.d(TAG, "Called " + count + " listeners");
 574     }
 575
 576
 577 }