package io.blobkeeper.file.service;
/*
* Copyright (C) 2015 by Denis M. Gabaydulin
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
import io.blobkeeper.file.domain.ReplicationFile;
import org.jetbrains.annotations.NotNull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Singleton;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import static com.google.common.base.Preconditions.checkNotNull;
@Singleton
public class ReplicationQueueImpl implements ReplicationQueue {
private static final Logger log = LoggerFactory.getLogger(ReplicationQueueImpl.class);
// TODO: find optimal queue size
// FIXME: move to config?
private final BlockingQueue<ReplicationFile> filesToSave = new ArrayBlockingQueue<>(1048576);
@Override
public boolean offer(@NotNull ReplicationFile file) {
if (log.isTraceEnabled()) {
log.trace("Putting file {} to the queue", file.getIndex());
}
checkNotNull(file, "File is required!");
return filesToSave.offer(file);
}
@NotNull
@Override
public ReplicationFile take() {
try {
return filesToSave.take();
} catch (InterruptedException e) {
log.error("Can't get file from the queue", e);
throw new IllegalStateException(e);
}
}
@Override
public boolean isEmpty() {
return filesToSave.isEmpty();
}
}