/*
* Syncany, www.syncany.org
* Copyright (C) 2011-2015 Philipp C. Heckel <philipp.heckel@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.syncany.plugins.transfer.features;
import org.syncany.plugins.transfer.StorageException;
import org.syncany.plugins.transfer.TransferManager;
import org.syncany.plugins.transfer.files.RemoteFile;
/**
* The read write consistent feature extension must be defined in the {@link ReadAfterWriteConsistent}
* feature in order to extend a {@link TransferManager} that was marked as 'read write consistent'
* with the required methods to verify if a file exists on the remote side.
*
* @author Christian Roth <christian.roth@port17.de>
*/
public interface ReadAfterWriteConsistentFeatureExtension extends FeatureExtension {
/**
* Check if a file on the remote side already exists.
*
* @param remoteFile The file to look up
* @return True if the file exists and is accessible and false otherwise
* @throws StorageException Thrown if an error occurred
*/
boolean exists(RemoteFile remoteFile) throws StorageException;
}