org.unidal.cat.message.storage.internals.DefaultByteBufCache.java Source code

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Here is the source code for org.unidal.cat.message.storage.internals.DefaultByteBufCache.java

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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 org.unidal.cat.message.storage.internals;

import java.nio.ByteBuffer;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;

import io.netty.util.ReferenceCountUtil;
import org.codehaus.plexus.logging.LogEnabled;
import org.codehaus.plexus.logging.Logger;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException;
import org.unidal.lookup.annotation.Named;

import com.dianping.cat.Cat;

@Named(type = ByteBufCache.class)
public class DefaultByteBufCache implements ByteBufCache, Initializable, LogEnabled {

    private BlockingQueue<ByteBuffer> m_bufs = new ArrayBlockingQueue<ByteBuffer>(8000);

    private Logger m_logger;

    private AtomicInteger m_count = new AtomicInteger();

    @Override
    public void enableLogging(Logger logger) {
        m_logger = logger;
    }

    public ByteBuffer get() {
        ByteBuffer buf = m_bufs.poll();

        if (buf == null) {
            buf = ByteBuffer.allocate(32 * 1024);
        }

        return buf;
    }

    @Override
    public void initialize() throws InitializationException {
    }

    public void put(ByteBuffer buf) {
        byte[] array = buf.array();

        for (int i = 0; i < array.length; i++) {
            array[i] = 0;
        }

        buf.clear();

        boolean result = m_bufs.offer(buf);

        if (!result) {
            try {
                ReferenceCountUtil.release(buf);
            } catch (Exception e) {
                Cat.logError(e);
            }

            if (m_count.incrementAndGet() % 100 == 0) {
                m_logger.info("error when put back buf");
            }
        }
    }

}