org.postgresql.clusterhealthy

Class ClusterHeartBeatMaster

java.lang.Object

org.postgresql.clusterhealthy.ClusterHeartBeat

org.postgresql.clusterhealthy.ClusterHeartBeatMaster

public class ClusterHeartBeatMaster
extends ClusterHeartBeat

Maintain the primary node of the cluster. When the primary node breaks down, you need to detect a new host and bind the faulty host to the new host to facilitate quick switchover when the failed node is connected

Field Summary

Fields

Modifier and Type	Field and Description
Map<HostSpec,Set<HostSpec>>	CLUSTER_NODE_RELATIONSHIP

Fields inherited from class org.postgresql.clusterhealthy.ClusterHeartBeat

CLUSTER_PROPERTIES

Method Summary

Modifier and Type	Method and Description
void	addClusterNode(HostSpec hostSpecs, HostSpec... value) Perform cache maintenance on cluster nodes connected to hosts
void	clear()
Set<HostSpec>	get(HostSpec hostSpec)
Map<HostSpec,Set<HostSpec>>	getClusterRelationship()
static ClusterHeartBeatMaster	getInstance()
void	removeClusterNode(HostSpec key, HostSpec newKey, Set<HostSpec> slaves) Update the cluster node relationship
void	run() the primary node is active and added to the failure set after failure

Methods inherited from class org.postgresql.clusterhealthy.ClusterHeartBeat

addNodeRelationship, addProperties, cacheProcess, findMasterNode, getClusterSalveNode, getProperties, getQueryExecutor, initPeriodTime, masterNodeProbe, nodeRoleIsMaster, removeProperties, updateDetection

Methods inherited from class java.lang.Object

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

Field Detail

CLUSTER_NODE_RELATIONSHIP

public final Map<HostSpec,Set<HostSpec>> CLUSTER_NODE_RELATIONSHIP

Method Detail

getInstance

public static ClusterHeartBeatMaster getInstance()

run

public void run()

the primary node is active and added to the failure set after failure

getClusterRelationship

public Map<HostSpec,Set<HostSpec>> getClusterRelationship()

Overrides:

getClusterRelationship in class ClusterHeartBeat

addClusterNode

public void addClusterNode(HostSpec hostSpecs,
                           HostSpec... value)

Description copied from class: ClusterHeartBeat

Perform cache maintenance on cluster nodes connected to hosts

Overrides:

addClusterNode in class ClusterHeartBeat

Parameters:

hostSpecs - the parsed/defaulted connection properties

value - slaves set

removeClusterNode

public void removeClusterNode(HostSpec key,
                              HostSpec newKey,
                              Set<HostSpec> slaves)

Description copied from class: ClusterHeartBeat

Update the cluster node relationship

Overrides:

removeClusterNode in class ClusterHeartBeat

Parameters:

key - old master

newKey - new master

slaves - slaves set

get

public Set<HostSpec> get(HostSpec hostSpec)

clear

public void clear()

Overrides:

clear in class ClusterHeartBeat