org.inria.myriads.snoozenode.groupmanager
Class GroupManagerBackend

java.lang.Object
  org.inria.myriads.snoozenode.groupmanager.GroupManagerBackend

All Implemented Interfaces:

LeaderElectionListener, HeartbeatListener

public final class GroupManagerBackend
extends Object
implements LeaderElectionListener, HeartbeatListener

Group manager backend logic.

Author:

Eugen Feller

Constructor Summary

GroupManagerBackend(NodeConfiguration nodeConfiguration)
Constructor.

Method Summary

GroupLeaderInit	getGroupLeaderInit() Returns the group leader initialization.
org.inria.myriads.snoozecommon.communication.groupmanager.GroupManagerDescription	getGroupManagerDescription() Returns the group manager description.
GroupManagerInit	getGroupManagerInit() Returns the group maanger initialization.
NodeConfiguration	getNodeConfiguration() Returns the node parameters.
void	onHeartbeatArrival(HeartbeatMessage heartbeat) Heartbeat event arrival event.
void	onHeartbeatFailure() Called when heartbeat message was not received for timeout.
boolean	onInitGroupLeader() Called by the leader election algorithm if current group manager becomes group leader.
void	onInitGroupManager() Starts the heartbeat multicast listener.

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupManagerBackend

public GroupManagerBackend(NodeConfiguration nodeConfiguration)
                    throws Exception

Constructor.

Parameters:

nodeConfiguration - The node parameters

Throws:

Exception - The exception

Method Detail

onInitGroupManager

public void onInitGroupManager()
                        throws Exception

Starts the heartbeat multicast listener.

Specified by:

onInitGroupManager in interface LeaderElectionListener

Throws:

Exception

getGroupLeaderInit

public GroupLeaderInit getGroupLeaderInit()

Returns the group leader initialization.

Returns:

The group leader initialization

getGroupManagerInit

public GroupManagerInit getGroupManagerInit()

Returns the group maanger initialization.

Returns:

The group manager initialization

getNodeConfiguration

public NodeConfiguration getNodeConfiguration()

Returns the node parameters.

Returns:

The node parameters

getGroupManagerDescription

public org.inria.myriads.snoozecommon.communication.groupmanager.GroupManagerDescription getGroupManagerDescription()

Returns the group manager description.

Returns:

The group manager description

onInitGroupLeader

public boolean onInitGroupLeader()

Called by the leader election algorithm if current group manager becomes group leader.

Specified by:

onInitGroupLeader in interface LeaderElectionListener

Returns:

true if everything ok, false otherwise

onHeartbeatArrival

public void onHeartbeatArrival(HeartbeatMessage heartbeat)

Heartbeat event arrival event.

Specified by:

onHeartbeatArrival in interface HeartbeatListener

Parameters:

heartbeat - Heartbeat message

onHeartbeatFailure

public void onHeartbeatFailure()

Called when heartbeat message was not received for timeout.

Specified by:

onHeartbeatFailure in interface HeartbeatListener