de.otto.synapse.messagestore

Class DelegatingSnapshotMessageStore

java.lang.Object

de.otto.synapse.messagestore.DelegatingSnapshotMessageStore

All Implemented Interfaces:

MessageStore, SnapshotMessageStore, java.lang.AutoCloseable

public class DelegatingSnapshotMessageStore
extends java.lang.Object
implements SnapshotMessageStore

Constructor Summary

Constructors

Constructor and Description
DelegatingSnapshotMessageStore(MessageStore delegate)

Method Summary

Modifier and Type	Method and Description
void	close()
ChannelPosition	getLatestChannelPosition() Returns the latest ChannelPosition of the MessageStore.
java.time.Instant	getSnapshotTimestamp()
int	size() Returns the number of messages contained in the MessageStore.
java.util.stream.Stream<Message<java.lang.String>>	stream() Returns a Stream of messages contained in the MessageStore.

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatingSnapshotMessageStore

public DelegatingSnapshotMessageStore(MessageStore delegate)

Method Detail

getSnapshotTimestamp

public java.time.Instant getSnapshotTimestamp()

Specified by:

getSnapshotTimestamp in interface SnapshotMessageStore

getLatestChannelPosition

public ChannelPosition getLatestChannelPosition()

Description copied from interface: MessageStore

Returns the latest ChannelPosition of the MessageStore.

The position is calculated by merging the optional positions of the messages.

Messages without positions will not change the latest ChannelPosition. If no message contains position information, the returned ChannelPosition is ChannelPosition.fromHorizon()

Specified by:

getLatestChannelPosition in interface MessageStore

Returns:

ChannelPosition

stream

public java.util.stream.Stream<Message<java.lang.String>> stream()

Description copied from interface: MessageStore

Returns a Stream of messages contained in the MessageStore.

The stream will maintain the insertion order of the messages.

Specified by:

stream in interface MessageStore

Returns:

Stream of messages

size

public int size()

Description copied from interface: MessageStore

Returns the number of messages contained in the MessageStore.

Primarily used for testing purposes. If the MessageStore can not implement this without major performance impacts (like, for example, having to download and parse huge files from S3), the method is not required to be implemented.

Specified by:

size in interface MessageStore

Returns:

number of messages

close

public void close()

Specified by:

close in interface MessageStore

Specified by:

close in interface java.lang.AutoCloseable