org.wso2.broker.coordination.rdbms

Class RdbmsHaStrategy

java.lang.Object

org.wso2.broker.coordination.AbstractHaStrategy

org.wso2.broker.coordination.rdbms.RdbmsHaStrategy

All Implemented Interfaces:

HaStrategy, RdbmsCoordinationListener

public class RdbmsHaStrategy
extends AbstractHaStrategy
implements RdbmsCoordinationListener

The RDBMS coordination based HA strategy implementation.

Field Summary

Fields inherited from class org.wso2.broker.coordination.AbstractHaStrategy

LOGGER

Constructor Summary

Constructors

Constructor and Description
RdbmsHaStrategy()

Method Summary

Modifier and Type	Method and Description
void	becameCoordinatorNode() Method to be invoked once the node becomes the coordinator node.
boolean	isActiveNode() Method to identify if the local node is the active node.
void	lostCoordinatorState() Method to be invoked once the node loses coordinator state.
void	pause()
void	resume()
void	setup(org.wso2.broker.common.StartupContext startupContext) Setup based on StartupContext if required (eg:- read configs).
void	start() Meant to be invoked when the HA strategy should start.
void	stop() Meant to be invoked when the HaStrategy should stop.

Methods inherited from class org.wso2.broker.coordination.AbstractHaStrategy

notifyBecameActiveNode, notifyBecamePassiveNode, registerListener, unregisterListener

Methods inherited from class java.lang.Object

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

Constructor Detail

RdbmsHaStrategy

public RdbmsHaStrategy()

Method Detail

setup

public void setup(org.wso2.broker.common.StartupContext startupContext)
           throws Exception

Setup based on StartupContext if required (eg:- read configs).

Specified by:

setup in interface HaStrategy

Parameters:

startupContext - the startup context from which registered services can be retrieved

Throws:

Exception

start

public void start()

Meant to be invoked when the HA strategy should start.

Specified by:

start in interface HaStrategy

isActiveNode

public boolean isActiveNode()

Method to identify if the local node is the active node.

Specified by:

isActiveNode in interface HaStrategy

stop

public void stop()

Meant to be invoked when the HaStrategy should stop.

Specified by:

stop in interface HaStrategy

Overrides:

stop in class AbstractHaStrategy

pause

public void pause()

resume

public void resume()

becameCoordinatorNode

public void becameCoordinatorNode()

Method to be invoked once the node becomes the coordinator node.

Specified by:

becameCoordinatorNode in interface RdbmsCoordinationListener

lostCoordinatorState

public void lostCoordinatorState()

Method to be invoked once the node loses coordinator state.

Specified by:

lostCoordinatorState in interface RdbmsCoordinationListener