@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());
}
@Override
public <S> Entry<S> loadSaga(Class<S> sagaType, String sagaIdentifier) {
EntityManager entityManager = entityManagerProvider.getEntityManager();
List<SerializedSaga> serializedSagaList =
entityManager
.createNamedQuery(LOAD_SAGA_NAMED_QUERY, SerializedSaga.class)
.setParameter("sagaId", sagaIdentifier)
.setParameter("sagaType", getSagaTypeName(sagaType))
.setMaxResults(1)
.getResultList();
if (serializedSagaList == null || serializedSagaList.isEmpty()) {
return null;
}
SerializedSaga serializedSaga = serializedSagaList.get(0);
S loadedSaga = serializer.deserialize(serializedSaga);
if (injector != null) {
injector.injectResources(loadedSaga);
}
Set<AssociationValue> associationValues =
loadAssociationValues(entityManager, sagaType, sagaIdentifier);
if (logger.isDebugEnabled()) {
logger.debug(
"Loaded saga id [{}] of type [{}]", sagaIdentifier, loadedSaga.getClass().getName());
}
return new EntryImpl<>(associationValues, loadedSaga);
}
/**
* Constructs a new SagaEntry for the given {@code saga}. The given saga must be serializable. The
* provided saga is not modified by this operation.
*
* @param saga The saga to store
* @param serializer The serialization mechanism to convert the Saga to a byte stream
*/
public SagaEntry(T saga, String sagaIdentifier, Serializer serializer) {
this.sagaId = sagaIdentifier;
SerializedObject<byte[]> serialized = serializer.serialize(saga, byte[].class);
this.serializedSaga = serialized.getData();
this.sagaType = serialized.getType().getName();
this.revision = serialized.getType().getRevision();
}
private String getSagaTypeName(Class<?> sagaType) {
return serializer.typeForClass(sagaType).getName();
}