org.neo4j.kernel.ha.zookeeper
Class AbstractZooKeeperManager

java.lang.Object
  org.neo4j.kernel.ha.zookeeper.AbstractZooKeeperManager

All Implemented Interfaces:

org.apache.zookeeper.Watcher

Direct Known Subclasses:

ClusterManager, ZooClient

public abstract class AbstractZooKeeperManager
extends Object
implements org.apache.zookeeper.Watcher

Contains basic functionality for a ZooKeeper manager, f.ex. how to get the current master in the cluster.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

org.apache.zookeeper.Watcher.Event

Field Summary

protected static String	HA_SERVERS_CHILD
protected static int	SESSION_TIME_OUT

Constructor Summary

AbstractZooKeeperManager(String servers, String storeDir)

Method Summary

protected Map<Integer,Machine>	getAllMachines(boolean wait)
Pair<Master,Machine>	getCachedMaster()
protected String	getHaServer(int machineId, boolean wait)
protected Machine	getMasterBasedOn(Collection<Machine> machines)
protected Pair<Master,Machine>	getMasterFromZooKeeper(boolean wait)
protected abstract int	getMyMachineId()
abstract String	getRoot()
protected abstract org.apache.zookeeper.ZooKeeper	getZooKeeper()
protected org.apache.zookeeper.ZooKeeper	instantiateZooKeeper()
protected Pair<Integer,Integer>	parseChild(String child)
protected long	readDataAsLong(String path)
protected String	readHaServer(int machineId, boolean wait)
void	shutdown()
abstract void	waitForSyncConnected()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.zookeeper.Watcher

process

Field Detail

HA_SERVERS_CHILD

protected static final String HA_SERVERS_CHILD

See Also:

Constant Field Values

SESSION_TIME_OUT

protected static final int SESSION_TIME_OUT

See Also:

Constant Field Values

Constructor Detail

AbstractZooKeeperManager

public AbstractZooKeeperManager(String servers,
                                String storeDir)

Method Detail

instantiateZooKeeper

protected org.apache.zookeeper.ZooKeeper instantiateZooKeeper()

getZooKeeper

protected abstract org.apache.zookeeper.ZooKeeper getZooKeeper()

getRoot

public abstract String getRoot()

parseChild

protected Pair<Integer,Integer> parseChild(String child)

readDataAsLong

protected long readDataAsLong(String path)
                       throws InterruptedException,
                              org.apache.zookeeper.KeeperException

Throws:

InterruptedException

org.apache.zookeeper.KeeperException

getMasterFromZooKeeper

protected Pair<Master,Machine> getMasterFromZooKeeper(boolean wait)

getMyMachineId

protected abstract int getMyMachineId()

getCachedMaster

public Pair<Master,Machine> getCachedMaster()

getMasterBasedOn

protected Machine getMasterBasedOn(Collection<Machine> machines)

getAllMachines

protected Map<Integer,Machine> getAllMachines(boolean wait)

getHaServer

protected String getHaServer(int machineId,
                             boolean wait)

readHaServer

protected String readHaServer(int machineId,
                              boolean wait)

shutdown

public void shutdown()

waitForSyncConnected

public abstract void waitForSyncConnected()