io.scalecube.cluster.metadata

Interface MetadataStore

public interface MetadataStore

Cluster component for hosting members metadata as well functions operating over local member metadata.

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Mono<ByteBuffer>	fetchMetadata(Member member) Retrives metadata from cluster member.
<T> Optional<T>	metadata() Returns local cluster member metadata from local store.
Optional<ByteBuffer>	metadata(Member member) Returns cluster member metadata from local store.
ByteBuffer	removeMetadata(Member member) Removes cluster member metadata from store.
void	start() Start listening on requests on getting local member metadata to remote callers.
void	stop() Stop listening on requests and dispose resporces.
ByteBuffer	updateMetadata(Member member, ByteBuffer metadata) Updates cluster member metadata in store.
void	updateMetadata(Object metadata) Updates local cluster member metadata.

Method Detail

start

void start()

Start listening on requests on getting local member metadata to remote callers.

stop

void stop()

Stop listening on requests and dispose resporces.

metadata

<T> Optional<T> metadata()

Returns local cluster member metadata from local store.

Returns:

local member metadata

metadata

Optional<ByteBuffer> metadata(Member member)

Returns cluster member metadata from local store.

Parameters:

member - cluster member

Returns:

metadata of the cluster member

updateMetadata

void updateMetadata(Object metadata)

Updates local cluster member metadata.

Parameters:

metadata - local member metadata

updateMetadata

ByteBuffer updateMetadata(Member member,
                          ByteBuffer metadata)

Updates cluster member metadata in store.

Parameters:

member - member

metadata - cluster member metadata

Returns:

old metadata or null

fetchMetadata

reactor.core.publisher.Mono<ByteBuffer> fetchMetadata(Member member)

Retrives metadata from cluster member.

Parameters:

member - cluster member

Returns:

mono result of getting member metadata

removeMetadata

ByteBuffer removeMetadata(Member member)

Removes cluster member metadata from store.

Parameters:

member - cluster member

Returns:

old metadata or null