/*******************************************************************************
* Copyright 2011 Netflix
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.netflix.astyanax.util;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import com.google.common.collect.Maps;
import com.google.common.collect.Queues;
import com.netflix.astyanax.MutationBatch;
import com.netflix.astyanax.impl.AckingQueue;
public class BlockingAckingQueue implements AckingQueue {
private LinkedBlockingQueue<MutationBatch> queue = Queues.newLinkedBlockingQueue();
private ConcurrentMap<MutationBatch, Boolean> busy = Maps.newConcurrentMap();
@Override
public MutationBatch getNextMutation(long timeout, TimeUnit unit) throws InterruptedException {
MutationBatch mutation = queue.poll(timeout, unit);
if (mutation != null) {
busy.put(mutation, true);
}
return mutation;
}
@Override
public void pushMutation(MutationBatch m) throws Exception {
queue.put(m);
}
@Override
public void ackMutation(MutationBatch m) throws Exception {
busy.remove(m);
}
@Override
public void repushMutation(MutationBatch m) throws Exception {
busy.remove(m);
pushMutation(m);
}
@Override
public int size() {
return queue.size();
}
}