org.apache.cassandra.service

Class LoadBroadcaster

java.lang.Object

org.apache.cassandra.service.LoadBroadcaster

All Implemented Interfaces:

IEndpointStateChangeSubscriber

public class LoadBroadcaster
extends java.lang.Object
implements IEndpointStateChangeSubscriber

Field Summary

Fields

Modifier and Type	Field and Description
static LoadBroadcaster	instance

Method Summary

Modifier and Type	Method and Description
void	beforeChange(InetAddressAndPort endpoint, EndpointState currentState, ApplicationState newStateKey, VersionedValue newValue)
java.util.Map<InetAddressAndPort,java.lang.Double>	getLoadInfo()
void	onAlive(InetAddressAndPort endpoint, EndpointState state)
void	onChange(InetAddressAndPort endpoint, ApplicationState state, VersionedValue value)
void	onDead(InetAddressAndPort endpoint, EndpointState state)
void	onJoin(InetAddressAndPort endpoint, EndpointState epState) Use to inform interested parties about the change in the state for specified endpoint
void	onRemove(InetAddressAndPort endpoint)
void	onRestart(InetAddressAndPort endpoint, EndpointState state) Called whenever a node is restarted.
void	startBroadcasting()

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final LoadBroadcaster instance

Method Detail

onChange

public void onChange(InetAddressAndPort endpoint,
                     ApplicationState state,
                     VersionedValue value)

Specified by:

onChange in interface IEndpointStateChangeSubscriber

onJoin

public void onJoin(InetAddressAndPort endpoint,
                   EndpointState epState)

Description copied from interface: IEndpointStateChangeSubscriber

Use to inform interested parties about the change in the state for specified endpoint

Specified by:

onJoin in interface IEndpointStateChangeSubscriber

Parameters:

endpoint - endpoint for which the state change occurred.

epState - state that actually changed for the above endpoint.

beforeChange

public void beforeChange(InetAddressAndPort endpoint,
                         EndpointState currentState,
                         ApplicationState newStateKey,
                         VersionedValue newValue)

Specified by:

beforeChange in interface IEndpointStateChangeSubscriber

onAlive

public void onAlive(InetAddressAndPort endpoint,
                    EndpointState state)

Specified by:

onAlive in interface IEndpointStateChangeSubscriber

onDead

public void onDead(InetAddressAndPort endpoint,
                   EndpointState state)

Specified by:

onDead in interface IEndpointStateChangeSubscriber

onRestart

public void onRestart(InetAddressAndPort endpoint,
                      EndpointState state)

Description copied from interface: IEndpointStateChangeSubscriber

Called whenever a node is restarted. Note that there is no guarantee when that happens that the node was previously marked down. It will have only if state.isAlive() == false as state is from before the restarted node is marked up.

Specified by:

onRestart in interface IEndpointStateChangeSubscriber

onRemove

public void onRemove(InetAddressAndPort endpoint)

Specified by:

onRemove in interface IEndpointStateChangeSubscriber

getLoadInfo

public java.util.Map<InetAddressAndPort,java.lang.Double> getLoadInfo()

startBroadcasting

public void startBroadcasting()