Package io.hekate.cluster.event

Class ClusterEventBase

java.lang.Object

io.hekate.cluster.event.ClusterEventBase

All Implemented Interfaces:

ClusterEvent, HekateSupport

Direct Known Subclasses:

ClusterChangeEvent, ClusterJoinEvent, ClusterLeaveEvent

public abstract class ClusterEventBase
extends Object
implements ClusterEvent

Abstract base class for ClusterEvent implementations.

See Also:

ClusterEventListener, ClusterService

Constructor Summary

Constructors

Constructor	Description
ClusterEventBase(ClusterTopology topology, HekateSupport hekate)	Constructs a new instance with the specified topology snapshot.

Method Summary

Modifier and Type	Method	Description
ClusterChangeEvent	asChange()	Casts this instance to the ClusterChangeEvent type or returns null if this instance can't be cast to that type.
ClusterJoinEvent	asJoin()	Casts this instance to the ClusterJoinEvent type or returns null if this instance can't be cast to that type.
ClusterLeaveEvent	asLeave()	Casts this instance to the ClusterLeaveEvent type or returns null if this instance can't be cast to that type.
void	attach(CompletableFuture<?> future)	Attaches an arbitrary asynchronous task to this event.
CompletableFuture<?>	future()	Returns a future object that represents all the attached futures of this event.
Hekate	hekate()	Returns the Hekate instance.
ClusterTopology	topology()	Returns the cluster topology snapshot of this event.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.hekate.cluster.event.ClusterEvent

type

Constructor Detail

ClusterEventBase

public ClusterEventBase(ClusterTopology topology,
                        HekateSupport hekate)

Constructs a new instance with the specified topology snapshot.

Parameters:

topology - Topology.

hekate - Delegate for hekate().

Method Detail

hekate

public Hekate hekate()

Description copied from interface: HekateSupport

Returns the Hekate instance.

Specified by:

hekate in interface HekateSupport

Returns:

Hekate instance.

topology

public ClusterTopology topology()

Description copied from interface: ClusterEvent

Returns the cluster topology snapshot of this event.

Specified by:

topology in interface ClusterEvent

Returns:

Cluster topology.

attach

public void attach(CompletableFuture<?> future)

Description copied from interface: ClusterEvent

Attaches an arbitrary asynchronous task to this event.

The specified future object represents an asynchronous task that should be logically attached to this event in such a way that this event should not be considered completed until the task future is completed.

Specified by:

attach in interface ClusterEvent

Parameters:

future - Synchronization future.

See Also:

ClusterEvent.future()

future

public CompletableFuture<?> future()

Description copied from interface: ClusterEvent

Returns a future object that represents all the attached futures of this event.

Specified by:

future in interface ClusterEvent

Returns:

Future object that represents all the attached futures of this event.

See Also:

ClusterEvent.attach(CompletableFuture)

asJoin

public ClusterJoinEvent asJoin()

Description copied from interface: ClusterEvent

Casts this instance to the ClusterJoinEvent type or returns null if this instance can't be cast to that type.

Specified by:

asJoin in interface ClusterEvent

Returns:

This instance as to ClusterJoinEvent or null if this instance can't be cast to that type.

asLeave

public ClusterLeaveEvent asLeave()

Description copied from interface: ClusterEvent

Casts this instance to the ClusterLeaveEvent type or returns null if this instance can't be cast to that type.

Specified by:

asLeave in interface ClusterEvent

Returns:

This instance as to ClusterLeaveEvent or null if this instance can't be cast to that type.

asChange

public ClusterChangeEvent asChange()

Description copied from interface: ClusterEvent

Casts this instance to the ClusterChangeEvent type or returns null if this instance can't be cast to that type.

Specified by:

asChange in interface ClusterEvent

Returns:

This instance as to ClusterChangeEvent or null if this instance can't be cast to that type.