Package com.hazelcast.cp

Class CPGroupsSnapshot

java.lang.Object

com.hazelcast.cp.CPGroupsSnapshot

public class CPGroupsSnapshot
extends Object

Represents an immutable snapshot of the current CP groups view from 1 member of the Hazelcast cluster. This snapshot object is used to share views between members and clients.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	CPGroupsSnapshot.GroupInfo

Field Summary

Fields

Modifier and Type	Field	Description
static final CPGroupsSnapshot	EMPTY	An empty snapshot for use when there is no data to provide

Constructor Summary

Constructors

Constructor	Description
CPGroupsSnapshot(Map<CPGroupId,CPGroupsSnapshot.GroupInfo> groupIdToInfo)	Create a new CPGroupsSnapshot without any CP to AP UUID mapping.
CPGroupsSnapshot(Map<CPGroupId,CPGroupsSnapshot.GroupInfo> groupIdToInfo, Map<UUID,UUID> cpToApUuids)	Create a new CPGroupsSnapshot with included CP to AP UUID mapping.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
Map<CPGroupId,CPGroupsSnapshot.GroupInfo>	getAllGroupInformation()
UUID	getApUuid(CPMember cpMember)
Map<UUID,UUID>	getCpToApUuids()
CPMember	getLeader(CPGroupId groupId)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

EMPTY

public static final CPGroupsSnapshot EMPTY

An empty snapshot for use when there is no data to provide

Constructor Details

CPGroupsSnapshot

public CPGroupsSnapshot(Map<CPGroupId,CPGroupsSnapshot.GroupInfo> groupIdToInfo,
 Map<UUID,UUID> cpToApUuids)

Create a new CPGroupsSnapshot with included CP to AP UUID mapping. This means AP UUIDs can be looked up directly from this snapshot without needing to query the cluster service.

Parameters:

groupIdToInfo - mapping of CPGroupId to CPGroupsSnapshot.GroupInfo

cpToApUuids - mapping of last known CP UUID to AP UUID for members in this group

CPGroupsSnapshot

public CPGroupsSnapshot(Map<CPGroupId,CPGroupsSnapshot.GroupInfo> groupIdToInfo)

Create a new CPGroupsSnapshot without any CP to AP UUID mapping. This means AP UUIDs will need to be looked up separately if they are required.

Parameters:

groupIdToInfo - mapping of CPGroupId to CPGroupsSnapshot.GroupInfo

Method Details

getAllGroupInformation

public Map<CPGroupId,CPGroupsSnapshot.GroupInfo> getAllGroupInformation()

getLeader

public CPMember getLeader(CPGroupId groupId)

getCpToApUuids

public Map<UUID,UUID> getCpToApUuids()

getApUuid

public UUID getApUuid(CPMember cpMember)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object