private object FromObject(object aggregateEvent, long version, IMetadata metadata = null)
{
if (aggregateEvent is IAggregateEvent)
{
_eventDefinitionService.Load(aggregateEvent.GetType());
var eventDefinition = _eventDefinitionService.GetDefinition(aggregateEvent.GetType());
var aggregateSequenceNumber = version + 1;
var eventId = EventId.NewDeterministic(
GuidFactories.Deterministic.Namespaces.Events,
$"{Id.Value}-v{aggregateSequenceNumber}");
var now = DateTimeOffset.UtcNow;
var eventMetadata = new Metadata
{
Timestamp = now,
AggregateSequenceNumber = aggregateSequenceNumber,
AggregateName = Name.Value,
AggregateId = Id.Value,
SourceId = PinnedCommand.SourceId,
EventId = eventId,
EventName = eventDefinition.Name,
EventVersion = eventDefinition.Version
};
eventMetadata.Add(MetadataKeys.TimestampEpoch, now.ToUnixTime().ToString());
if (metadata != null)
{
eventMetadata.AddRange(metadata);
}
var genericType = typeof(CommittedEvent <, ,>)
.MakeGenericType(typeof(TAggregate), typeof(TIdentity), aggregateEvent.GetType());
var committedEvent = Activator.CreateInstance(
genericType,
Id,
aggregateEvent,
eventMetadata,
now,
aggregateSequenceNumber);
return(committedEvent);
}
throw new InvalidOperationException("could not perform the required mapping for committed event.");
}
public SerializedEvent Serialize(IAggregateEvent aggregateEvent, IEnumerable <KeyValuePair <string, string> > metadatas)
{
var eventDefinition = _eventDefinitionService.GetDefinition(aggregateEvent.GetType());
var metadata = new Metadata(metadatas
.Where(kv => kv.Key != MetadataKeys.EventName && kv.Key != MetadataKeys.EventVersion) // TODO: Fix this
.Concat(new[]
{
new KeyValuePair <string, string>(MetadataKeys.EventName, eventDefinition.Name),
new KeyValuePair <string, string>(MetadataKeys.EventVersion, eventDefinition.Version.ToString(CultureInfo.InvariantCulture)),
}));
var dataJson = _jsonSerializer.Serialize(aggregateEvent);
var metaJson = _jsonSerializer.Serialize(metadata);
return(new SerializedEvent(
metaJson,
dataJson,
metadata.AggregateSequenceNumber,
metadata));
}
public virtual CommittedEvent <TAggregate, TIdentity, TAggregateEvent> From <TAggregateEvent>(TAggregateEvent aggregateEvent,
long version, IMetadata metadata = null)
where TAggregateEvent : IAggregateEvent <TAggregate, TIdentity>
{
if (aggregateEvent == null)
{
throw new ArgumentNullException(nameof(aggregateEvent));
}
_eventDefinitionService.Load(aggregateEvent.GetType());
var eventDefinition = _eventDefinitionService.GetDefinition(aggregateEvent.GetType());
var aggregateSequenceNumber = version + 1;
var eventId = EventId.NewDeterministic(
GuidFactories.Deterministic.Namespaces.Events,
$"{Id.Value}-v{aggregateSequenceNumber}");
var now = DateTimeOffset.UtcNow;
var eventMetadata = new Metadata
{
Timestamp = now,
AggregateSequenceNumber = aggregateSequenceNumber,
AggregateName = Name.Value,
AggregateId = Id.Value,
SourceId = PinnedCommand.SourceId,
EventId = eventId,
EventName = eventDefinition.Name,
EventVersion = eventDefinition.Version
};
eventMetadata.Add(MetadataKeys.TimestampEpoch, now.ToUnixTime().ToString());
if (metadata != null)
{
eventMetadata.AddRange(metadata);
}
var committedEvent = new CommittedEvent <TAggregate, TIdentity, TAggregateEvent>(Id, aggregateEvent, eventMetadata, now, aggregateSequenceNumber);
return(committedEvent);
}
public virtual void Emit <TAggregateEvent>(TAggregateEvent aggregateEvent, IMetadata metadata = null)
where TAggregateEvent : IAggregateEvent <TAggregate, TIdentity>
{
if (aggregateEvent == null)
{
throw new ArgumentNullException(nameof(aggregateEvent));
}
_eventDefinitionService.Load(typeof(TAggregateEvent));
var eventDefinition = _eventDefinitionService.GetDefinition(typeof(TAggregateEvent));
var aggregateSequenceNumber = Version + 1;
var eventId = EventId.NewDeterministic(
GuidFactories.Deterministic.Namespaces.Events,
$"{Id.Value}-v{aggregateSequenceNumber}");
var now = DateTimeOffset.UtcNow;
var eventMetadata = new Metadata
{
Timestamp = now,
AggregateSequenceNumber = aggregateSequenceNumber,
AggregateName = Name.Value,
AggregateId = Id.Value,
EventId = eventId,
EventName = eventDefinition.Name,
EventVersion = eventDefinition.Version
};
eventMetadata.Add(MetadataKeys.TimestampEpoch, now.ToUnixTime().ToString());
if (metadata != null)
{
eventMetadata.AddRange(metadata);
}
var committedEvent = new CommittedEvent <TAggregate, TIdentity, TAggregateEvent>(Id, aggregateEvent, eventMetadata, now, Version);
Persist(committedEvent, ApplyCommittedEvents);
Logger.Info($"[{Name}] With Id={Id} Commited [{typeof(TAggregateEvent).PrettyPrint()}]");
Version++;
var domainEvent = new DomainEvent <TAggregate, TIdentity, TAggregateEvent>(Id, aggregateEvent, eventMetadata, now, Version);
Publish(domainEvent);
if (SnapshotStrategy.ShouldCreateSnapshot(this))
{
var aggregateSnapshot = CreateSnapshot();
if (aggregateSnapshot != null)
{
var t = aggregateSnapshot.GetType();
_snapshotDefinitionService.Load(aggregateSnapshot.GetType());
var snapshotDefinition = _snapshotDefinitionService.GetDefinition(aggregateSnapshot.GetType());
var snapshotMetadata = new SnapshotMetadata
{
AggregateId = Id.Value,
AggregateName = Name.Value,
AggregateSequenceNumber = Version,
SnapshotName = snapshotDefinition.Name,
SnapshotVersion = snapshotDefinition.Version
};
var commitedSnapshot =
new ComittedSnapshot <TAggregate, TIdentity, IAggregateSnapshot <TAggregate, TIdentity> >(
Id,
aggregateSnapshot,
snapshotMetadata,
now, Version);
SaveSnapshot(commitedSnapshot);
}
}
}