com.hazelcast.cp.internal.persistence

Interface CPMetadataStore

All Known Implementing Classes:

NopCPMetadataStore

public interface CPMetadataStore

Persists and restores CP member metadata of the local member.

Method Summary

Modifier and Type	Method and Description
boolean	hasMetadata() Returns true if this member has metadata persisted on the storage layer.
boolean	isMarkedAPMember() Returns true if this member is marked as AP member on the storage layer.
void	persistLocalCPMember(CPMember member) Persists CPMember identity of the local member to storage.
void	persistMetadataGroupId(RaftGroupId groupId) Persists group id of the METADATA group.
CPMember	readLocalCPMember() Reads CPMember identity of this member from storage.
RaftGroupId	readMetadataGroupId() Reads group id of the METADATA group, or reads null if METADATA group id has not changed
boolean	tryMarkAPMember() Marks this member as AP member on the storage layer, if it is not a CP member already.

Method Detail

isMarkedAPMember

boolean isMarkedAPMember()

Returns true if this member is marked as AP member on the storage layer. If false is returned, it means that AP/CP identity of the member is not not known yet CP member discovery will run.

tryMarkAPMember

boolean tryMarkAPMember()
                 throws IOException

Marks this member as AP member on the storage layer, if it is not a CP member already.

Returns:

true if marked as AP, false otherwise

Throws:

IOException

hasMetadata

boolean hasMetadata()

Returns true if this member has metadata persisted on the storage layer.

persistLocalCPMember

void persistLocalCPMember(CPMember member)
                   throws IOException

Persists CPMember identity of the local member to storage.

Throws:

IOException

readLocalCPMember

CPMember readLocalCPMember()
                    throws IOException

Reads CPMember identity of this member from storage. If null is returned, it means that AP/CP identity of the member is not not known yet CP member discovery will run.

Throws:

IOException

persistMetadataGroupId

void persistMetadataGroupId(RaftGroupId groupId)
                     throws IOException

Persists group id of the METADATA group.

Throws:

IOException

readMetadataGroupId

RaftGroupId readMetadataGroupId()
                         throws IOException

Reads group id of the METADATA group, or reads null if METADATA group id has not changed

Throws:

IOException