基于zookeeper实现的分布式锁

其他 2019-07-10 20:33:44 阅读次数: 0

目录

摘要

在分布式解决方案中，分布式锁是一个很重要的部分。之前有写过一篇基于redis实现的分布式锁，为了实现在工作项目中生产环境多节点的定时任务抢占触发。前段时间又接手了一个社区项目的模块改版任务，实现需求是，用户通过APP端报名参加茶会活动，需要在报名接口增加一个分布式锁，以保证在并发请求下活动的名额能够正确的扣减。出于这个项目正好用到了zookeeper做服务注册发现中心。于是尝试搞了一下利用zookeeper的临时有序节点实现分布式锁机制。

实现原理

首先，我们知道zookeeper的数据存储结构就像一棵树，由很多节点(Znode)组成。zookeeper的节点共有四种类型，
1、持久节点（PERSISTENT）
2、持久顺序节点（PERSISTENT_SEQUENTIAL）
3、临时节点（EPHEMERAL）
4、临时顺序节点（EPHEMERAL_SEQUENTIAL）
zookeeper分布式锁正好用到的就是临时顺序节点的特性实现的。首先，先创建一个父节点/lock,请求进来创建一个临时顺序节点，然后获取所有子节点，
遍历判断自己是不是序号最小的那个，如果是则获得锁成功。否则就会监控上一个节点，直至上一个节点释放锁删除节点后才会获得锁。

代码实现

1、先定义一个锁接口

/**
 * @author v_liuwen
 * @date 2019-05-30
 */
public interface ILock {
    /**
     * 获取锁
     * @throws ConcurrencyException
     */
    public void acquireLock() throws ConcurrencyException;

    /**
     * 等待获取锁
     * @throws ConcurrencyException
     */
    public void acquireLockWait() throws ConcurrencyException;

    /**
     * 释放锁
     */
    public void releaseLock() ;
}

2、实现锁接口，事先具体逻辑

/**
 * zookeeper 分布式抢占锁
 * @author v_liuwen
 * @date 2019-05-30
 */
public class ZkDistributeLock implements ILock, Watcher {

    /**
     * 日志打印
     */
    private static Logger logger = LoggerFactory.getLogger(ZkDistributeLock.class);

    //计数器
    private CountDownLatch countDownLatch;
    //根节点
    private String ROOT_LOCK = "/lock";
    //等待的前一个锁
    private String WAIT_LOCK;
    //当前锁
    private String CURRENT_LOCK;
    //锁资源
    private String lockName;
    private ZooKeeper zooKeeper = null;
    private int sessionTimeOut = 30000;
    private List<Exception> exceptionList = Lists.newArrayList();
    private static final String ZOOKEEPER_PROPERTITY_PATH = "/application.properties";

    /**
     * 配置分布式锁
     * @param lockName 锁资源
     */
    public ZkDistributeLock(String lockName){
        this.lockName = lockName;
        try{
            //连接zookeeeper
            String config = PropertiesUtils.getProperty("spring.zookeeper.address", ZOOKEEPER_PROPERTITY_PATH);
            zooKeeper = new ZooKeeper(config,sessionTimeOut,this);
            Stat stat = zooKeeper.exists(ROOT_LOCK,false);
            if(stat == null){
                //如果根节点不存在，则创建根节点
                zooKeeper.create(ROOT_LOCK,new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
            }
        }catch (IOException | KeeperException | InterruptedException e){
            logger.error(e.getMessage());
        }
    }

    @Override
    public void acquireLock() throws ConcurrencyException {
        if(exceptionList.size() > 0){
            throw new LockException(exceptionList.get(0));
        }
        try{
            if(this.tryLock()){
                System.out.println(Thread.currentThread().getName()+" "+lockName+"获得了锁");
                logger.debug(Thread.currentThread().getName()+" "+lockName+"获得了锁");
                return;
            }
            throw new LockException("获取锁失败！");
        }catch (LockException e){
            logger.error(e.getMessage());
            throw e;
        }
    }

    public boolean tryLock() {
        try{
            String splitStr = "_lock_";
            if(lockName.contains(splitStr)){
                throw new LockException("锁名错误");
            }
            //创建临时有序节点
            CURRENT_LOCK = zooKeeper.create(ROOT_LOCK+"/"+lockName+splitStr,new byte[0],
                    ZooDefs.Ids.OPEN_ACL_UNSAFE,CreateMode.EPHEMERAL_SEQUENTIAL);
            System.out.println(CURRENT_LOCK+"已经创建");
            logger.debug(CURRENT_LOCK+"已经创建");
            //获取所有子节点
            List<String> subNodes = zooKeeper.getChildren(ROOT_LOCK,false);
            //取出所有locakName的锁
            List<String> lockObjects = Lists.newArrayList();
            subNodes.forEach(s -> {
                String _node = s.split(splitStr)[0];
                if(_node.equalsIgnoreCase(lockName)){
                    lockObjects.add(s);
                }
            });
            Collections.sort(lockObjects);
            System.out.println(Thread.currentThread().getName()+" 的锁是"+CURRENT_LOCK);
            logger.debug(Thread.currentThread().getName()+" 的锁是"+CURRENT_LOCK);
            //若当前节点为最小节点，则获得锁成功
            if(CURRENT_LOCK.equalsIgnoreCase(ROOT_LOCK+"/"+lockObjects.get(0))){
                return true;
            }
            //若不是最小节点，则找到自己的前一个节点
            String preNode = CURRENT_LOCK.substring(CURRENT_LOCK.lastIndexOf("/")+1);
            WAIT_LOCK = lockObjects.get(Collections.binarySearch(lockObjects,preNode)-1);
        }catch (InterruptedException | KeeperException e){
            logger.error(e.getMessage());
        }
        return false;
    }

    /**
     * 等待获取锁
     * @param prev
     * @param waitTime
     * @return
     * @throws KeeperException
     * @throws InterruptedException
     */
    private boolean waitForLock(String prev,long waitTime) throws KeeperException, InterruptedException {
        Stat stat = zooKeeper.exists(ROOT_LOCK+"/"+prev,true);
        if(stat != null){
            System.out.println(Thread.currentThread().getName()+"等待锁"+ROOT_LOCK+"/"+prev);
            logger.debug(Thread.currentThread().getName()+"等待锁"+ROOT_LOCK+"/"+prev);
            this.countDownLatch = new CountDownLatch(1);
            //计数等待，若等到前一个节点消失，则precess中进行countDown,停止等待，获取锁
            this.countDownLatch = null;
            System.out.println(Thread.currentThread().getName()+"等到了锁");
            logger.debug(Thread.currentThread().getName()+"等到了锁");
        }
        return true;
    }

    @Override
    public void acquireLockWait() throws ConcurrencyException {
        if(exceptionList.size() > 0){
            throw new LockException(exceptionList.get(0));
        }
        try{
            if(this.tryLock()){
                System.out.println(Thread.currentThread().getName()+" "+lockName+"获得了锁");
                logger.debug(Thread.currentThread().getName()+" "+lockName+"获得了锁");
                return;
            }else {
                //等待锁
                waitForLock(WAIT_LOCK,sessionTimeOut);
            }
        }catch (InterruptedException | KeeperException e){
            logger.error(e.getMessage());
        }
    }

    @Override
    public void releaseLock() {
        try{
            logger.debug("释放锁"+CURRENT_LOCK);
            System.out.println("释放锁"+CURRENT_LOCK);
            zooKeeper.delete(CURRENT_LOCK,-1);
            CURRENT_LOCK = null;
            zooKeeper.close();
        }catch (InterruptedException | KeeperException e){
            logger.error(e.getMessage());
        }
    }

    /**
     * 节点监视器
     * @param watchedEvent
     */
    @Override
    public void process(WatchedEvent watchedEvent) {
        if(this.countDownLatch != null){
            this.countDownLatch.countDown();
        }
    }
}

3、测试

/**
 * @author v_liuwen
 * @date 2019-05-25
 */
public class Test1 {

    static int n = 500;
    public static void secsKill(){
        System.out.println(--n);
    }

    public static void main(String[] args) {

        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                ZkDistributeLock lock = null;
                try{
                    lock = new ZkDistributeLock("activity");
                    lock.acquireLockWait();
                    secsKill();
                    System.out.println(Thread.currentThread().getName()+"正在运行");
                }finally {
                    if(lock != null){
                        lock.releaseLock();
                    }
                }
            }
        };

        for(int i = 0;i<10;i++){
            Thread t = new Thread(runnable);
            t.start();
        }
    }
}

测试打印部分输出

18:38:50.929 [Thread-1-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950009, packet:: clientPath:null serverPath:null finished:false header:: 1,3  replyHeader:: 1,148,0  request:: '/lock,F  response:: s{20,20,1558774399619,1558774399619,0,60,0,0,0,0,129} 
18:38:50.930 [Thread-3-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950001, packet:: clientPath:null serverPath:null finished:false header:: 1,3  replyHeader:: 1,148,0  request:: '/lock,F  response:: s{20,20,1558774399619,1558774399619,0,60,0,0,0,0,129} 
18:38:50.930 [Thread-8-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950005, packet:: clientPath:null serverPath:null finished:false header:: 1,3  replyHeader:: 1,148,0  request:: '/lock,F  response:: s{20,20,1558774399619,1558774399619,0,60,0,0,0,0,129} 
18:38:50.952 [Thread-1-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950009, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,149,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000030 
/lock/activity_lock_0000000030已经创建
18:38:50.955 [Thread-1] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000030已经创建
18:38:50.957 [Thread-4-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950003, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,150,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000031 
18:38:50.958 [Thread-6-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950006, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,151,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000032 
/lock/activity_lock_0000000031已经创建
18:38:50.959 [Thread-3-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950001, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,152,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000033 
18:38:50.958 [Thread-4] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000031已经创建
/lock/activity_lock_0000000032已经创建
18:38:50.962 [Thread-6] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000032已经创建
18:38:50.965 [Thread-8-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950005, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,153,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000034 
18:38:50.971 [Thread-5-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950002, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,154,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000035 
18:38:50.973 [Thread-2-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950004, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,155,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000036 
18:38:50.974 [Thread-0-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950007, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,156,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000037 
18:38:50.975 [Thread-9-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950000, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,157,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000038 
18:38:50.976 [Thread-7-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950008, packet:: clientPath:null serverPath:null finished:false header:: 2,1  replyHeader:: 2,158,0  request:: '/lock/activity_lock_,,v{s{31,s{'world,'anyone}}},3  response:: '/lock/activity_lock_0000000039 
/lock/activity_lock_0000000033已经创建
18:38:50.983 [Thread-3] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000033已经创建
/lock/activity_lock_0000000034已经创建
18:38:50.983 [Thread-8] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000034已经创建
/lock/activity_lock_0000000035已经创建
/lock/activity_lock_0000000036已经创建
/lock/activity_lock_0000000037已经创建
/lock/activity_lock_0000000038已经创建
18:38:50.987 [Thread-5] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000035已经创建
/lock/activity_lock_0000000039已经创建
18:38:50.988 [Thread-7] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000039已经创建
18:38:50.988 [Thread-9] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000038已经创建
18:38:50.988 [Thread-0] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000037已经创建
18:38:50.988 [Thread-2] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - /lock/activity_lock_0000000036已经创建
18:38:50.996 [Thread-6-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950006, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.996 [Thread-1-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950009, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.996 [Thread-8-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950005, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.996 [Thread-4-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950003, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.997 [Thread-3-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950001, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.997 [Thread-5-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950002, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.999 [Thread-7-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950008, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.999 [Thread-9-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950000, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:50.999 [Thread-0-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950007, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
18:38:51.000 [Thread-2-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950004, packet:: clientPath:null serverPath:null finished:false header:: 3,8  replyHeader:: 3,158,0  request:: '/lock,F  response:: v{'activity_lock_0000000030,'activity_lock_0000000032,'activity_lock_0000000031,'activity_lock_0000000034,'activity_lock_0000000033,'activity_lock_0000000036,'activity_lock_0000000035,'activity_lock_0000000038,'activity_lock_0000000037,'activity_lock_0000000039} 
Thread-0 的锁是/lock/activity_lock_0000000037
Thread-2 的锁是/lock/activity_lock_0000000036
18:38:51.002 [Thread-0] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-0 的锁是/lock/activity_lock_0000000037
18:38:51.002 [Thread-2] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-2 的锁是/lock/activity_lock_0000000036
Thread-6 的锁是/lock/activity_lock_0000000032
18:38:51.002 [Thread-6] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-6 的锁是/lock/activity_lock_0000000032
Thread-3 的锁是/lock/activity_lock_0000000033
18:38:51.002 [Thread-3] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-3 的锁是/lock/activity_lock_0000000033
Thread-1 的锁是/lock/activity_lock_0000000030
18:38:51.003 [Thread-1] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-1 的锁是/lock/activity_lock_0000000030
Thread-7 的锁是/lock/activity_lock_0000000039
Thread-1 activity获得了锁
Thread-4 的锁是/lock/activity_lock_0000000031
18:38:51.004 [Thread-4] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-4 的锁是/lock/activity_lock_0000000031
18:38:51.005 [Thread-0-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950007, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000036,T  response:: s{155,155,1562582330950,1562582330950,0,0,0,72069033391095812,0,0,155} 
18:38:51.005 [Thread-6-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950006, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000031,T  response:: s{150,150,1562582330949,1562582330949,0,0,0,72069033391095811,0,0,150} 
18:38:51.006 [Thread-3-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950001, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000032,T  response:: s{151,151,1562582330949,1562582330949,0,0,0,72069033391095814,0,0,151} 
18:38:51.003 [Thread-7] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-7 的锁是/lock/activity_lock_0000000039
Thread-9 的锁是/lock/activity_lock_0000000038
18:38:51.006 [Thread-9] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-9 的锁是/lock/activity_lock_0000000038
Thread-8 的锁是/lock/activity_lock_0000000034
18:38:51.006 [Thread-8] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-8 的锁是/lock/activity_lock_0000000034
Thread-0等待锁/lock/activity_lock_0000000036
18:38:51.007 [Thread-0] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-0等待锁/lock/activity_lock_0000000036
Thread-6等待锁/lock/activity_lock_0000000031
18:38:51.007 [Thread-6] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-6等待锁/lock/activity_lock_0000000031
Thread-3等待锁/lock/activity_lock_0000000032
18:38:51.007 [Thread-3] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-3等待锁/lock/activity_lock_0000000032
18:38:51.004 [Thread-1] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-1 activity获得了锁
499
Thread-1正在运行
Thread-0等到了锁
Thread-5 的锁是/lock/activity_lock_0000000035
Thread-3等到了锁
Thread-6等到了锁
18:38:51.008 [Thread-2-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950004, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000035,T  response:: s{154,154,1562582330949,1562582330949,0,0,0,72069033391095810,0,0,154} 
18:38:51.008 [Thread-4-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950003, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000030,T  response:: s{149,149,1562582330939,1562582330939,0,0,0,72069033391095817,0,0,149} 
18:38:51.009 [Thread-6] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-6等到了锁
498
Thread-6正在运行
18:38:51.009 [Thread-6] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000032
释放锁/lock/activity_lock_0000000032
18:38:51.010 [Thread-7-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950008, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000038,T  response:: s{157,157,1562582330950,1562582330950,0,0,0,72069033391095808,0,0,157} 
18:38:51.011 [Thread-8-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950005, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000033,T  response:: s{152,152,1562582330949,1562582330949,0,0,0,72069033391095809,0,0,152} 
18:38:51.011 [Thread-9-SendThread(127.0.0.1:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x1000a676e950000, packet:: clientPath:null serverPath:null finished:false header:: 4,3  replyHeader:: 4,158,0  request:: '/lock/activity_lock_0000000037,T  response:: s{156,156,1562582330950,1562582330950,0,0,0,72069033391095815,0,0,156} 
Thread-2等待锁/lock/activity_lock_0000000035
18:38:51.008 [Thread-1] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000030
释放锁/lock/activity_lock_0000000030
18:38:51.012 [Thread-2] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-2等待锁/lock/activity_lock_0000000035
Thread-2等到了锁
18:38:51.012 [Thread-2] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-2等到了锁
497
Thread-2正在运行
Thread-7等待锁/lock/activity_lock_0000000038
18:38:51.012 [Thread-2] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000036
释放锁/lock/activity_lock_0000000036
18:38:51.012 [Thread-7] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-7等待锁/lock/activity_lock_0000000038
Thread-7等到了锁
18:38:51.012 [Thread-7] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-7等到了锁
496
Thread-7正在运行
18:38:51.012 [Thread-7] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000039
释放锁/lock/activity_lock_0000000039
Thread-8等待锁/lock/activity_lock_0000000033
18:38:51.012 [Thread-8] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-8等待锁/lock/activity_lock_0000000033
Thread-8等到了锁
18:38:51.012 [Thread-8] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-8等到了锁
495
Thread-8正在运行
18:38:51.012 [Thread-8] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000034
释放锁/lock/activity_lock_0000000034
Thread-9等待锁/lock/activity_lock_0000000037
18:38:51.012 [Thread-9] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-9等待锁/lock/activity_lock_0000000037
Thread-9等到了锁
18:38:51.013 [Thread-9] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-9等到了锁
494
Thread-9正在运行
18:38:51.013 [Thread-9] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000038
释放锁/lock/activity_lock_0000000038
18:38:51.008 [Thread-0] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-0等到了锁
493
Thread-0正在运行
18:38:51.013 [Thread-0] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000037
释放锁/lock/activity_lock_0000000037
Thread-4等待锁/lock/activity_lock_0000000030
18:38:51.013 [Thread-4] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-4等待锁/lock/activity_lock_0000000030
Thread-4等到了锁
18:38:51.013 [Thread-4] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-4等到了锁
492
Thread-4正在运行
18:38:51.013 [Thread-4] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000031
释放锁/lock/activity_lock_0000000031
18:38:51.009 [Thread-5] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-5 的锁是/lock/activity_lock_0000000035
18:38:51.009 [Thread-3] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - Thread-3等到了锁
491
Thread-3正在运行
18:38:51.014 [Thread-3] DEBUG top.qrainly.zookeeper.customlock.ZkDistributeLock - 释放锁/lock/activity_lock_0000000033
释放锁/lock/activity_lock_0000000033

4、搞定

持续更新中…

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