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/*
 * Copyright (c) 2017. CK. All rights reserved.
 */

package com.github.fartherp.framework.remoting.common;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Base class for background thread
 *
 * @author hyssop
 */
public abstract class ServiceThread implements Runnable {
    private static final Logger STLOG = LoggerFactory.getLogger(RemotingHelper.Framework_REMOTING);
    private static final long JOIN_TIME = 90 * 1000;
    protected final Thread thread;
    protected volatile boolean hasNotified = false;
    protected volatile boolean stopped = false;

    public ServiceThread() {
        this.thread = new Thread(this, this.getServiceName());
    }

    public abstract String getServiceName();

    public void start() {
        this.thread.start();
    }

    public void shutdown() {
        this.shutdown(false);
    }

    public void shutdown(final boolean interrupt) {
        this.stopped = true;
        STLOG.info("shutdown thread " + this.getServiceName() + " interrupt " + interrupt);
        synchronized (this) {
            if (!this.hasNotified) {
                this.hasNotified = true;
                this.notify();
            }
        }

        try {
            if (interrupt) {
                this.thread.interrupt();
            }

            long beginTime = System.currentTimeMillis();
            this.thread.join(this.getJointime());
            long eclipseTime = System.currentTimeMillis() - beginTime;
            STLOG.info("join thread " + this.getServiceName() + " eclipse time(ms) " + eclipseTime + " "
                    + this.getJointime());
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public long getJointime() {
        return JOIN_TIME;
    }

    public void stop() {
        this.stop(false);
    }

    public void stop(final boolean interrupt) {
        this.stopped = true;
        STLOG.info("stop thread " + this.getServiceName() + " interrupt " + interrupt);
        synchronized (this) {
            if (!this.hasNotified) {
                this.hasNotified = true;
                this.notify();
            }
        }

        if (interrupt) {
            this.thread.interrupt();
        }
    }

    public void makeStop() {
        this.stopped = true;
        STLOG.info("makestop thread " + this.getServiceName());
    }

    public void wakeup() {
        synchronized (this) {
            if (!this.hasNotified) {
                this.hasNotified = true;
                this.notify();
            }
        }
    }

    protected void waitForRunning(long interval) {
        synchronized (this) {
            if (this.hasNotified) {
                this.hasNotified = false;
                this.onWaitEnd();
                return;
            }

            try {
                this.wait(interval);
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                this.hasNotified = false;
                this.onWaitEnd();
            }
        }
    }

    protected void onWaitEnd() {
    }

    public boolean isStopped() {
        return stopped;
    }
}