org.apache.hadoop.hbase.replication
Class ReplicationPeerZKImpl

java.lang.Object
  org.apache.hadoop.hbase.replication.ReplicationPeerZKImpl

All Implemented Interfaces:

Closeable, Abortable, ReplicationPeer

@InterfaceAudience.Private
public class ReplicationPeerZKImpl
extends Object
implements ReplicationPeer, Abortable, Closeable

Nested Class Summary

class	ReplicationPeerZKImpl.PeerStateTracker Tracker for state of this peer
class	ReplicationPeerZKImpl.TableCFsTracker Tracker for (table, cf-list) map of this peer

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.replication.ReplicationPeer

ReplicationPeer.PeerState

Constructor Summary

ReplicationPeerZKImpl(org.apache.hadoop.conf.Configuration conf, String id, ReplicationPeerConfig peerConfig)
Constructor that takes all the objects required to communicate with the specified peer, except for the region server addresses.

Method Summary

void	abort(String why, Throwable e) Abort the server or client.
void	close()
org.apache.hadoop.conf.Configuration	getConfiguration() Get the configuration object required to communicate with this peer
String	getId() Get the identifier of this peer
ReplicationPeerConfig	getPeerConfig() Get the peer config object
ReplicationPeer.PeerState	getPeerState() Returns the state of the peer
Map<String,List<String>>	getTableCFs() Get replicable (table, cf-list) map of this peer
boolean	isAborted() Check if the server or client was aborted.
static boolean	isStateEnabled(byte[] bytes) Parse the raw data from ZK to get a peer's state
void	startStateTracker(ZooKeeperWatcher zookeeper, String peerStateNode) start a state tracker to check whether this peer is enabled or not
void	startTableCFsTracker(ZooKeeperWatcher zookeeper, String tableCFsNode) start a table-cfs tracker to listen the (table, cf-list) map change

Methods inherited from class java.lang.Object

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

Constructor Detail

ReplicationPeerZKImpl

public ReplicationPeerZKImpl(org.apache.hadoop.conf.Configuration conf,
                             String id,
                             ReplicationPeerConfig peerConfig)
                      throws ReplicationException

Constructor that takes all the objects required to communicate with the specified peer, except for the region server addresses.

Parameters:

conf - configuration object to this peer

id - string representation of this peer's identifier

peerConfig - configuration for the replication peer

Throws:

ReplicationException

Method Detail

startStateTracker

public void startStateTracker(ZooKeeperWatcher zookeeper,
                              String peerStateNode)
                       throws org.apache.zookeeper.KeeperException

start a state tracker to check whether this peer is enabled or not

Parameters:

zookeeper - zk watcher for the local cluster

peerStateNode - path to zk node which stores peer state

Throws:

org.apache.zookeeper.KeeperException

startTableCFsTracker

public void startTableCFsTracker(ZooKeeperWatcher zookeeper,
                                 String tableCFsNode)
                          throws org.apache.zookeeper.KeeperException

start a table-cfs tracker to listen the (table, cf-list) map change

Parameters:

zookeeper - zk watcher for the local cluster

tableCFsNode - path to zk node which stores table-cfs

Throws:

org.apache.zookeeper.KeeperException

getPeerState

public ReplicationPeer.PeerState getPeerState()

Description copied from interface: ReplicationPeer

Returns the state of the peer

Specified by:

getPeerState in interface ReplicationPeer

Returns:

the enabled state

getId

public String getId()

Get the identifier of this peer

Specified by:

getId in interface ReplicationPeer

Returns:

string representation of the id (short)

getPeerConfig

public ReplicationPeerConfig getPeerConfig()

Get the peer config object

Specified by:

getPeerConfig in interface ReplicationPeer

Returns:

the ReplicationPeerConfig for this peer

getConfiguration

public org.apache.hadoop.conf.Configuration getConfiguration()

Get the configuration object required to communicate with this peer

Specified by:

getConfiguration in interface ReplicationPeer

Returns:

configuration object

getTableCFs

public Map<String,List<String>> getTableCFs()

Get replicable (table, cf-list) map of this peer

Specified by:

getTableCFs in interface ReplicationPeer

Returns:

the replicable (table, cf-list) map

abort

public void abort(String why,
                  Throwable e)

Description copied from interface: Abortable

Abort the server or client.

Specified by:

abort in interface Abortable

Parameters:

why - Why we're aborting.

e - Throwable that caused abort. Can be null.

isAborted

public boolean isAborted()

Description copied from interface: Abortable

Check if the server or client was aborted.

Specified by:

isAborted in interface Abortable

Returns:

true if the server or client was aborted, false otherwise

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Throws:

IOException

isStateEnabled

public static boolean isStateEnabled(byte[] bytes)
                              throws DeserializationException

Parse the raw data from ZK to get a peer's state

Parameters:

bytes - raw ZK data

Returns:

True if the passed in bytes are those of a pb serialized ENABLED state.

Throws:

DeserializationException