Module com.aoapps.appcluster.core

Package com.aoapps.appcluster

Class Resource<R extends Resource<R,RN>,RN extends ResourceNode<R,RN>>

java.lang.Object

com.aoapps.appcluster.Resource<R,RN>

Direct Known Subclasses:

CronResource

public abstract class Resource<R extends Resource<R,RN>,RN extends ResourceNode<R,RN>>
extends Object

Monitors the status of a resource by monitoring its role based on DNS entries and synchronizing the resource on an as-needed and/or scheduled basis.

Author:

AO Industries, Inc.

See Also:

ResourceDnsMonitor

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Resource(AppCluster cluster, ResourceConfiguration<R,RN> resourceConfiguration, Collection<? extends ResourceNode<?,?>> resourceNodes)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
abstract boolean	getAllowMultiMaster()	Gets if this resource allows multiple master servers.
AppCluster	getCluster()	Gets the cluster this resource is part of.
String	getDisplay()	Gets the display name of this resource.
ResourceDnsMonitor	getDnsMonitor()	Gets the DNS monitor for this resource.
Set<? extends Nameserver>	getEnabledNameservers()	Gets the set of all nameservers used by all enabled nodes.
String	getId()	The unique ID of this resource.
Set<? extends Name>	getMasterRecords()	Gets the set of master records that must all by the same.
int	getMasterRecordsTtl()	Gets the expected TTL value for the master record.
Set<? extends RN>	getResourceNodes()
ResourceStatus	getStatus()	Gets the status of this resource based on disabled, last monitoring results, and synchronization state.
Map<Node,ResourceSynchronizer<R,RN>>	getSynchronizerMap()	Gets a map-view of the resource synchronizers keyed on remote node.
Collection<ResourceSynchronizer<R,RN>>	getSynchronizers()	Gets the set of resource synchronizers.
String	getType()	Gets the replication type of this resource.
int	hashCode()
boolean	isEnabled()	Determines if both the cluster and this resource are enabled.
protected abstract ResourceSynchronizer<R,RN>	newResourceSynchronizer(RN localResourceNode, RN remoteResourceNode, ResourceConfiguration<R,RN> resourceConfiguration)	Creates the resource synchronizer for this specific type of resource or null if never performs any synchronization between these two nodes.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Resource

protected Resource(AppCluster cluster,
                   ResourceConfiguration<R,RN> resourceConfiguration,
                   Collection<? extends ResourceNode<?,?>> resourceNodes)
            throws AppClusterConfigurationException

Throws:

AppClusterConfigurationException

Method Detail

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getCluster

public AppCluster getCluster()

Gets the cluster this resource is part of.

getId

public String getId()

The unique ID of this resource.

isEnabled

public boolean isEnabled()

Determines if both the cluster and this resource are enabled.

getDisplay

public String getDisplay()

Gets the display name of this resource.

getMasterRecords

public Set<? extends Name> getMasterRecords()

Gets the set of master records that must all by the same. The master node is determined by matching these records against the resource node configuration's node records.

getMasterRecordsTtl

public int getMasterRecordsTtl()

Gets the expected TTL value for the master record.

getEnabledNameservers

public Set<? extends Nameserver> getEnabledNameservers()

Gets the set of all nameservers used by all enabled nodes.

getDnsMonitor

public ResourceDnsMonitor getDnsMonitor()

Gets the DNS monitor for this resource.

getResourceNodes

public Set<? extends RN> getResourceNodes()

getStatus

public ResourceStatus getStatus()

Gets the status of this resource based on disabled, last monitoring results, and synchronization state.

getAllowMultiMaster

public abstract boolean getAllowMultiMaster()

Gets if this resource allows multiple master servers.

getType

public String getType()

Gets the replication type of this resource.

newResourceSynchronizer

protected abstract ResourceSynchronizer<R,RN> newResourceSynchronizer(RN localResourceNode,
                                                                            RN remoteResourceNode,
                                                                            ResourceConfiguration<R,RN> resourceConfiguration)
                                                                     throws AppClusterConfigurationException

Creates the resource synchronizer for this specific type of resource or null if never performs any synchronization between these two nodes.

Throws:

AppClusterConfigurationException

getSynchronizers

public Collection<ResourceSynchronizer<R,RN>> getSynchronizers()

Gets the set of resource synchronizers.

getSynchronizerMap

public Map<Node,ResourceSynchronizer<R,RN>> getSynchronizerMap()

Gets a map-view of the resource synchronizers keyed on remote node. If the local node is not part of the resource nodes, returns an empty map.