/*
* Syncany, www.syncany.org
* Copyright (C) 2011-2016 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 java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* <p>Some storage backends do not guarantee that a file immediately exists on the
* remote side after it is uploaded or moved.<br/>
* This feature handles such cases by relaxing the strong assumption that a file
* is immediately available after creation due to upload or move operations.
*
* <p>The {@link ReadAfterWriteConsistentFeatureTransferManager} throttles existence check
* using a simple exponential method:<br/>
*
* <code>throttle(n) = 3 ^ n * 100 ms, with n being the current iteration
*
* @author Christian Roth <christian.roth@port17.de>
*/
@Feature(required = false)
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface ReadAfterWriteConsistent {
/**
* @see ReadAfterWriteConsistentFeatureExtension
*/
Class<? extends ReadAfterWriteConsistentFeatureExtension> extension();
/**
* Define how often a transfer manager will try to find a file on the remote side.
*/
int maxRetries() default 5;
/**
* Define the maximum wait time until a file has to exist on the remote side (given in milliseconds).
*/
int maxWaitTime() default 10000;
}