com.alibaba.rocketmq.common.DataVersion Maven / Gradle / Ivy

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/**
 * 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.alibaba.rocketmq.common;

import com.alibaba.rocketmq.remoting.protocol.RemotingSerializable;

import java.util.concurrent.atomic.AtomicLong;


/**
 * @author shijia.wxr
 */
public class DataVersion extends RemotingSerializable {
    private long timestatmp = System.currentTimeMillis();
    private AtomicLong counter = new AtomicLong(0);


    public void assignNewOne(final DataVersion dataVersion) {
        this.timestatmp = dataVersion.timestatmp;
        this.counter.set(dataVersion.counter.get());
    }


    public void nextVersion() {
        this.timestatmp = System.currentTimeMillis();
        this.counter.incrementAndGet();
    }


    public long getTimestatmp() {
        return timestatmp;
    }


    public void setTimestatmp(long timestatmp) {
        this.timestatmp = timestatmp;
    }


    public AtomicLong getCounter() {
        return counter;
    }


    public void setCounter(AtomicLong counter) {
        this.counter = counter;
    }


    @Override
    public boolean equals(Object obj) {
        DataVersion dv = (DataVersion) obj;
        return this.timestatmp == dv.timestatmp && this.counter.get() == dv.counter.get();
    }
}