private bool ProcessEvent(HandlerDescriptor handlerDescriptor, IVersionedEvent @event, string eventId,
IDictionary <string, object> items)
{
var sourceInfo = (SourceInfo)items[StandardMetadata.SourceInfo];
var traceInfo = (TraceInfo)items[StandardMetadata.TraceInfo];
if (@event.Version > 1)
{
var lastPublishedVersion = _publishedVersionStore.GetPublishedVersion(sourceInfo) + 1;
if (lastPublishedVersion < @event.Version)
{
var envelope = new Envelope <IEvent>(@event, eventId)
{
Items = items
};
_eventBus.Send(envelope);
if (LogManager.Default.IsDebugEnabled)
{
LogManager.Default.DebugFormat(
"The event cannot be process now as the version is not the next version, it will be handle later. aggregateRootType={0},aggregateRootId={1},lastPublishedVersion={2},eventVersion={3},eventType={4}.",
sourceInfo.Type.FullName,
sourceInfo.Id,
lastPublishedVersion,
@event.Version,
@event.GetType().FullName);
}
return(false);
}
if (lastPublishedVersion > @event.Version)
{
if (LogManager.Default.IsDebugEnabled)
{
LogManager.Default.DebugFormat(
"The event is ignored because it is obsoleted. aggregateRootType={0},aggregateRootId={1},lastPublishedVersion={2},eventVersion={3},eventType={4}.",
sourceInfo.Type.FullName,
sourceInfo.Id,
lastPublishedVersion,
@event.Version,
@event.GetType().FullName);
}
return(false);
}
}
var context = new EventContext(_commandBus, _resultBus);
context.SourceInfo = sourceInfo;
context.TraceInfo = traceInfo;
if (items.ContainsKey(StandardMetadata.CommandInfo))
{
context.CommandInfo = (SourceInfo)items[StandardMetadata.CommandInfo];
}
try {
handlerDescriptor.Invode(context, @event);
context.Commit();
}
catch (Exception ex)
{
var commandResult = new CommandResult(HandleStatus.SyncFailed, ex.Message)
{
Result = _serializer.Serialize(ex.Data),
ReplyType = CommandReturnMode.EventHandled
};
_resultBus.Send(commandResult, traceInfo);
return(false);
}
_publishedVersionStore.AddOrUpdatePublishedVersion(sourceInfo, @event.Version);
return(true);
}
