@Test
public void testDomainEventEntry_WrapEventsCorrectly() {
Serializer serializer = new XStreamSerializer();
String payload = "Payload";
MetaData metaData = new MetaData(Collections.singletonMap("Key", "Value"));
DomainEventMessage<String> event =
new GenericDomainEventMessage<>(
"type",
randomUUID().toString(),
2L,
payload,
metaData,
randomUUID().toString(),
Instant.now());
DomainEventEntry eventEntry = new DomainEventEntry(event, serializer);
assertEquals(event.getAggregateIdentifier(), eventEntry.getAggregateIdentifier());
assertEquals(event.getSequenceNumber(), eventEntry.getSequenceNumber());
assertEquals(event.getTimestamp(), eventEntry.getTimestamp());
assertEquals(payload, serializer.deserialize(eventEntry.getPayload()));
assertEquals(metaData, serializer.deserialize(eventEntry.getMetaData()));
assertEquals(byte[].class, eventEntry.getPayload().getContentType());
}
/**
* Constructor used to create a new event entry to store in Mongo.
*
* @param eventSerializer Serializer to use for the event to store
* @param events The events contained in this commit
*/
private CommitEntry(Serializer eventSerializer, List<DomainEventMessage<?>> events) {
this.aggregateIdentifier = events.get(0).getAggregateIdentifier();
this.firstSequenceNumber = events.get(0).getSequenceNumber();
this.firstTimestamp = events.get(0).getTimestamp().toEpochMilli();
final DomainEventMessage lastEvent = events.get(events.size() - 1);
this.lastTimestamp = lastEvent.getTimestamp().toEpochMilli();
this.lastSequenceNumber = lastEvent.getSequenceNumber();
eventEntries = new EventEntry[events.size()];
for (int i = 0, eventsLength = events.size(); i < eventsLength; i++) {
DomainEventMessage event = events.get(i);
eventEntries[i] = new EventEntry(eventSerializer, event);
}
}
private EventEntry(Serializer serializer, DomainEventMessage event) {
this.eventIdentifier = event.getIdentifier();
Class<?> serializationTarget = String.class;
if (serializer.canSerializeTo(DBObject.class)) {
serializationTarget = DBObject.class;
}
SerializedObject serializedPayloadObject =
serializePayload(event, serializer, serializationTarget);
SerializedObject serializedMetaDataObject =
serializeMetaData(event, serializer, serializationTarget);
this.serializedPayload = serializedPayloadObject.getData();
this.payloadType = serializedPayloadObject.getType().getName();
this.payloadRevision = serializedPayloadObject.getType().getRevision();
this.serializedMetaData = serializedMetaDataObject.getData();
this.sequenceNumber = event.getSequenceNumber();
this.timestamp = event.getTimestamp().toEpochMilli();
}
@Test
public void testAggregateIdentifier_IdentifierAutomaticallyDeducted() {
fixture.registerAggregateFactory(mockAggregateFactory);
fixture.registerAnnotatedCommandHandler(
new MyCommandHandler(fixture.getRepository(), fixture.getEventBus()));
fixture
.given(new MyEvent("AggregateId", 1), new MyEvent("AggregateId", 2))
.when(new TestCommand("AggregateId"))
.expectEvents(new MyEvent("AggregateId", 3));
DomainEventStream events = fixture.getEventStore().readEvents("AggregateId");
for (int t = 0; t < 3; t++) {
assertTrue(events.hasNext());
DomainEventMessage next = events.next();
assertEquals("AggregateId", next.getAggregateIdentifier());
assertEquals(t, next.getSequenceNumber());
}
}