Package org.elasticsearch.discovery

Class PeerFinder

java.lang.Object

org.elasticsearch.discovery.PeerFinder

public abstract class PeerFinder
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	PeerFinder.ConfiguredHostsResolver
static interface	PeerFinder.TransportAddressConnector

Field Summary

Fields

Modifier and Type	Field	Description
static Setting<TimeValue>	DISCOVERY_FIND_PEERS_INTERVAL_SETTING
static Setting<TimeValue>	DISCOVERY_REQUEST_PEERS_TIMEOUT_SETTING
static java.lang.String	REQUEST_PEERS_ACTION_NAME

Constructor Summary

Constructors

Constructor	Description
PeerFinder(Settings settings, TransportService transportService, PeerFinder.TransportAddressConnector transportAddressConnector, PeerFinder.ConfiguredHostsResolver configuredHostsResolver)

Method Summary

Modifier and Type	Method	Description
void	activate(DiscoveryNodes lastAcceptedNodes)
void	deactivate(DiscoveryNode leader)
long	getCurrentTerm()
java.lang.Iterable<DiscoveryNode>	getFoundPeers()
java.util.List<TransportAddress>	getLastResolvedAddresses()
java.util.Optional<DiscoveryNode>	getLeader()
protected boolean	holdsLock()
protected abstract void	onActiveMasterFound(DiscoveryNode masterNode, long term)	Invoked on receipt of a PeersResponse from a node that believes it's an active leader, which this node should therefore try and join.
protected abstract void	onFoundPeersUpdated()	Invoked when the set of found peers changes.
void	setCurrentTerm(long currentTerm)
protected void	startProbe(TransportAddress transportAddress)

Methods inherited from class java.lang.Object

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

Field Details

REQUEST_PEERS_ACTION_NAME

public static final java.lang.String REQUEST_PEERS_ACTION_NAME

See Also:

Constant Field Values

DISCOVERY_FIND_PEERS_INTERVAL_SETTING

public static final Setting<TimeValue> DISCOVERY_FIND_PEERS_INTERVAL_SETTING

DISCOVERY_REQUEST_PEERS_TIMEOUT_SETTING

public static final Setting<TimeValue> DISCOVERY_REQUEST_PEERS_TIMEOUT_SETTING

Constructor Details

PeerFinder

public PeerFinder(Settings settings, TransportService transportService, PeerFinder.TransportAddressConnector transportAddressConnector, PeerFinder.ConfiguredHostsResolver configuredHostsResolver)

Method Details

activate

public void activate(DiscoveryNodes lastAcceptedNodes)

deactivate

public void deactivate(DiscoveryNode leader)

holdsLock

protected final boolean holdsLock()

getLeader

public java.util.Optional<DiscoveryNode> getLeader()

getCurrentTerm

public long getCurrentTerm()

setCurrentTerm

public void setCurrentTerm(long currentTerm)

onActiveMasterFound

protected abstract void onActiveMasterFound(DiscoveryNode masterNode, long term)

Invoked on receipt of a PeersResponse from a node that believes it's an active leader, which this node should therefore try and join. Note that invocations of this method are not synchronised. By the time it is called we may have been deactivated.

onFoundPeersUpdated

protected abstract void onFoundPeersUpdated()

Invoked when the set of found peers changes. Note that invocations of this method are not fully synchronised, so we only guarantee that the change to the set of found peers happens before this method is invoked. If there are multiple concurrent changes then there will be multiple concurrent invocations of this method, with no guarantee as to their order. For this reason we do not pass the updated set of peers as an argument to this method, leaving it to the implementation to call getFoundPeers() with appropriate synchronisation to avoid lost updates. Also, by the time this method is invoked we may have been deactivated.

getLastResolvedAddresses

public java.util.List<TransportAddress> getLastResolvedAddresses()

getFoundPeers

public java.lang.Iterable<DiscoveryNode> getFoundPeers()

startProbe

protected void startProbe(TransportAddress transportAddress)