org.elasticsearch.discovery

Interface Discovery

All Superinterfaces:

AutoCloseable, LifecycleComponent<Discovery>, Releasable

All Known Implementing Classes:

LocalDiscovery, ZenDiscovery

public interface Discovery
extends LifecycleComponent<Discovery>

A pluggable module allowing to implement discovery of other nodes, publishing of the cluster state to all nodes, electing a master of the cluster that raises cluster state change events.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Discovery.AckListener

Method Summary

Methods

Modifier and Type	Method and Description
void	addListener(InitialStateDiscoveryListener listener)
DiscoveryNode	localNode()
String	nodeDescription()
void	publish(ClusterChangedEvent clusterChangedEvent, Discovery.AckListener ackListener) Publish all the changes to the cluster from the master (can be called just by the master).
void	removeListener(InitialStateDiscoveryListener listener)
void	setNodeService(NodeService nodeService) Here as a hack to solve dep injection problem...
void	setRoutingService(RoutingService routingService) Another hack to solve dep injection problem..., note, this will be called before any start is called.
void	startInitialJoin() Triggers the first join cycle

Methods inherited from interface org.elasticsearch.common.component.LifecycleComponent

addLifecycleListener, lifecycleState, removeLifecycleListener, start, stop

Methods inherited from interface org.elasticsearch.common.lease.Releasable

close

Method Detail

localNode

DiscoveryNode localNode()

addListener

void addListener(InitialStateDiscoveryListener listener)

removeListener

void removeListener(InitialStateDiscoveryListener listener)

nodeDescription

String nodeDescription()

setNodeService

void setNodeService(@Nullable
                  NodeService nodeService)

Here as a hack to solve dep injection problem...

setRoutingService

void setRoutingService(RoutingService routingService)

Another hack to solve dep injection problem..., note, this will be called before any start is called.

publish

void publish(ClusterChangedEvent clusterChangedEvent,
           Discovery.AckListener ackListener)

Publish all the changes to the cluster from the master (can be called just by the master). The publish process should not publish this state to the master as well! (the master is sending it...). The Discovery.AckListener allows to keep track of the ack received from nodes, and verify whether they updated their own cluster state or not.

startInitialJoin

void startInitialJoin()

Triggers the first join cycle