org.lable.oss.dynamicconfig.zookeeper

Class ZooKeeperLock

java.lang.Object

org.lable.oss.dynamicconfig.zookeeper.ZooKeeperLock

All Implemented Interfaces:

Lock

public class ZooKeeperLock
extends Object
implements Lock

A locking mechanism that uses a ZooKeeper quorum to acquire an exclusive claim.

The method used is inspired by the queueing algorithm suggested in the ZooKeeper documentation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ZooKeeperLock.State Internal state of this lock.

Field Summary

Fields

Modifier and Type	Field and Description
protected ZooKeeperLock.State	state

Method Summary

Modifier and Type	Method and Description
void	lock()
void	lockInterruptibly()
Condition	newCondition()
boolean	tryLock()
boolean	tryLock(long time, TimeUnit unit)
void	unlock()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

state

protected ZooKeeperLock.State state

Method Detail

lock

public void lock()

Specified by:

lock in interface Lock

lockInterruptibly

public void lockInterruptibly()
                       throws InterruptedException

Specified by:

lockInterruptibly in interface Lock

Throws:

InterruptedException

tryLock

public boolean tryLock()

Specified by:

tryLock in interface Lock

tryLock

public boolean tryLock(long time,
                       TimeUnit unit)
                throws InterruptedException

Specified by:

tryLock in interface Lock

Throws:

InterruptedException

unlock

public void unlock()

Specified by:

unlock in interface Lock

newCondition

public Condition newCondition()

Specified by:

newCondition in interface Lock