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, AbstractGraphDatabase graphDb, int clientReadTimeout, int clientLockReadTimeout, int maxConcurrentChannelsPerSlave)

Method Summary

protected Map<Integer,ZooKeeperMachine>	getAllMachines(boolean wait)
Pair<Master,Machine>	getCachedMaster()
protected org.neo4j.com.Client.ConnectionLostHandler	getConnectionLostHandler()
protected AbstractGraphDatabase	getGraphDb()
protected String	getHaServer(int machineId, boolean wait)
protected ZooKeeperMachine	getMasterBasedOn(Collection<ZooKeeperMachine> machines)
protected Pair<Master,Machine>	getMasterFromZooKeeper(boolean wait, boolean allowChange)
protected abstract int	getMyMachineId()
abstract String	getRoot()
String	getServers()
abstract org.apache.zookeeper.ZooKeeper	getZooKeeper(boolean sync)
protected org.apache.zookeeper.ZooKeeper	instantiateZooKeeper()
protected void	invalidateMaster()
protected Pair<Integer,Integer>	parseChild(String child)
protected Pair<Long,Integer>	readDataRepresentingInstance(String path)
protected Pair<String,Integer>	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,
                                AbstractGraphDatabase graphDb,
                                int clientReadTimeout,
                                int clientLockReadTimeout,
                                int maxConcurrentChannelsPerSlave)

Method Detail

instantiateZooKeeper

protected org.apache.zookeeper.ZooKeeper instantiateZooKeeper()

getZooKeeper

public abstract org.apache.zookeeper.ZooKeeper getZooKeeper(boolean sync)

getRoot

public abstract String getRoot()

getGraphDb

protected AbstractGraphDatabase getGraphDb()

parseChild

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

readDataRepresentingInstance

protected Pair<Long,Integer> readDataRepresentingInstance(String path)
                                                   throws InterruptedException,
                                                          org.apache.zookeeper.KeeperException

Throws:

InterruptedException

org.apache.zookeeper.KeeperException

invalidateMaster

protected void invalidateMaster()

getMasterFromZooKeeper

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

getMyMachineId

protected abstract int getMyMachineId()

getCachedMaster

public Pair<Master,Machine> getCachedMaster()

getMasterBasedOn

protected ZooKeeperMachine getMasterBasedOn(Collection<ZooKeeperMachine> machines)

getConnectionLostHandler

protected org.neo4j.com.Client.ConnectionLostHandler getConnectionLostHandler()

getAllMachines

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

getHaServer

protected String getHaServer(int machineId,
                             boolean wait)

readHaServer

protected Pair<String,Integer> readHaServer(int machineId,
                                            boolean wait)

shutdown

public void shutdown()

waitForSyncConnected

public abstract void waitForSyncConnected()

getServers

public String getServers()