/* dCache - http://www.dcache.org/
*
* Copyright (C) 2015 Deutsches Elektronen-Synchrotron
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dcache.srm.scheduler.strategy;
import java.util.ArrayDeque;
import java.util.Queue;
import org.dcache.srm.request.Job;
import org.dcache.srm.scheduler.spi.SchedulingStrategy;
public class FifoSchedulingStrategy implements SchedulingStrategy
{
private final Queue<Long> queue = new ArrayDeque<>();
@Override
public synchronized void add(Job job)
{
queue.add(job.getId());
}
@Override
public synchronized Long remove()
{
return queue.poll();
}
@Override
public synchronized int size()
{
return queue.size();
}
}