de.otto.synapse.eventsource

Class DelegateEventSource

java.lang.Object

de.otto.synapse.eventsource.DelegateEventSource

All Implemented Interfaces:

EventSource

public class DelegateEventSource
extends java.lang.Object
implements EventSource

Constructor Summary

Constructors

Constructor and Description
DelegateEventSource(java.lang.String messageLogBeanName, EventSourceBuilder eventSourceBuilder, org.springframework.context.ApplicationContext applicationContext)

Method Summary

Modifier and Type	Method and Description
java.util.concurrent.CompletableFuture<ChannelPosition>	consume() Consumes all events from the EventSource, until the (current) end of the stream is reached.
java.util.concurrent.CompletableFuture<ChannelPosition>	consumeUntil(java.time.Instant until) Consumes all events from the EventSource until the timestamp is reached.
java.lang.String	getChannelName() Returns the name of the EventSource.
EventSource	getDelegate()
MessageDispatcher	getMessageDispatcher() Returns registered EventConsumers.
MessageLogReceiverEndpoint	getMessageLogReceiverEndpoint() Returns the MessageLogReceiverEndpoint used by the EventSource to consume events.
boolean	isStopping()
void	register(MessageConsumer<?> messageConsumer) Registers a new EventConsumer at the EventSource.
void	stop()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegateEventSource

public DelegateEventSource(java.lang.String messageLogBeanName,
                           EventSourceBuilder eventSourceBuilder,
                           org.springframework.context.ApplicationContext applicationContext)

Method Detail

getDelegate

public EventSource getDelegate()

register

public void register(MessageConsumer<?> messageConsumer)

Registers a new EventConsumer at the EventSource.

consumers have to be thread safe as it may be called from multiple threads (e.g. for kinesis streams there is one thread per shard)

Specified by:

register in interface EventSource

Parameters:

messageConsumer - the registered EventConsumer

getMessageDispatcher

@Nonnull
public MessageDispatcher getMessageDispatcher()

Returns registered EventConsumers.

Specified by:

getMessageDispatcher in interface EventSource

Returns:

EventConsumers

getMessageLogReceiverEndpoint

@Nonnull
public MessageLogReceiverEndpoint getMessageLogReceiverEndpoint()

Returns the MessageLogReceiverEndpoint used by the EventSource to consume events.

Specified by:

getMessageLogReceiverEndpoint in interface EventSource

Returns:

MessageLogReceiverEndpoint

getChannelName

@Nonnull
public java.lang.String getChannelName()

Returns the name of the EventSource.

For streaming event-sources, this is the name of the event stream.

Specified by:

getChannelName in interface EventSource

Returns:

name

consume

public java.util.concurrent.CompletableFuture<ChannelPosition> consume()

Consumes all events from the EventSource, until the (current) end of the stream is reached.

The registered consumers will be called zero or more times, depending on the number of events retrieved from the EventSource.

Specified by:

consume in interface EventSource

Returns:

the new read position

consumeUntil

@Nonnull
public java.util.concurrent.CompletableFuture<ChannelPosition> consumeUntil(@Nonnull
                                                                                      java.time.Instant until)

Consumes all events from the EventSource until the timestamp is reached.

The registered consumers will be called zero or more times, depending on the number of events retrieved from the EventSource.

Specified by:

consumeUntil in interface EventSource

Parameters:

until - the timestamp until the messages should be consumed

Returns:

the new read position

stop

public void stop()

Specified by:

stop in interface EventSource

isStopping

public boolean isStopping()

Specified by:

isStopping in interface EventSource

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object