me.prettyprint.cassandra.locking
Class HLockManagerImpl

java.lang.Object
  me.prettyprint.cassandra.locking.AbstractLockManager
      me.prettyprint.cassandra.locking.HLockManagerImpl

All Implemented Interfaces:

HLockManager

public class HLockManagerImpl
extends AbstractLockManager

Wait Chain implementation created by Dominic Williams, reviewed by Aaron Morton and Patricio Echague.

Author:

patricioe (Patricio Echague - patricioe@gmail.com), tnine (Todd Nine)

Field Summary

Fields inherited from class me.prettyprint.cassandra.locking.AbstractLockManager

cluster, DUMMY_VALUE, keyspace, lockManagerConfigurator

Constructor Summary

HLockManagerImpl(Cluster cluster, HLockManagerConfigurator hlc)

Method Summary

void	acquire(HLock lock) Acquires a lock represented by lock.getPath and filling up the lockId with a unique client/caller lock id.
void	acquire(HLock lock, long timeout) Acquires a lock represented by lock.getPath and filling up the lockId with a unique client/caller lock id.
HLock	createLock(String lockPath) Creates a lock instance to use later on acquire(HLock)
void	release(HLock lock) Releases the lock
void	shutdownScheduler() Here for testing purposes only, this should never really be invoked

Methods inherited from class me.prettyprint.cassandra.locking.AbstractLockManager

getCluster, getKeyspace, getLockManagerConfigurator, init, setCluster, setKeyspace, setLockManagerConfigurator

Methods inherited from class java.lang.Object

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

Constructor Detail

HLockManagerImpl

public HLockManagerImpl(Cluster cluster,
                        HLockManagerConfigurator hlc)

Method Detail

acquire

public void acquire(HLock lock)

Description copied from interface: HLockManager

Acquires a lock represented by lock.getPath and filling up the lockId with a unique client/caller lock id. This method will block until a lock is returned

Parameters:

lock - a lock object with path identifying the lock path to lock on

acquire

public void acquire(HLock lock,
                    long timeout)

Acquires a lock represented by lock.getPath and filling up the lockId with a unique client/caller lock id. This method will block until a lock is returned, or timeout is reached

Parameters:

lock - a lock object with path identifying the lock path to lock on

timeout - The time to wait for acquiring a lock in milliseconds

shutdownScheduler

public void shutdownScheduler()

Here for testing purposes only, this should never really be invoked

release

public void release(HLock lock)

Description copied from interface: HLockManager

Releases the lock

Parameters:

lock - a lock to release

createLock

public HLock createLock(String lockPath)

Description copied from interface: HLockManager

Creates a lock instance to use later on acquire(HLock)

Returns: