com.dianping.cat.message.io.DefaultMessageQueue Maven / Gradle / Ivy

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/*
 * Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
 *
 * 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.
 */
package com.dianping.cat.message.io;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;

import com.dianping.cat.message.spi.MessageQueue;
import com.dianping.cat.message.spi.MessageTree;

public class DefaultMessageQueue implements MessageQueue {

	private BlockingQueue m_queue;

	public DefaultMessageQueue(int size) {
		m_queue = new ArrayBlockingQueue(size);
	}

	@Override
	public boolean offer(MessageTree tree) {
		return m_queue.offer(tree);
	}

	@Override
	public MessageTree peek() {
		return m_queue.peek();
	}

	@Override
	public MessageTree poll() {
		try {
			return m_queue.poll(5, TimeUnit.MILLISECONDS);
		} catch (InterruptedException e) {
			return null;
		}
	}

	@Override
	public int size() {
		return m_queue.size();
	}
}