public void Save(ISagaEx saga, Guid commitId, Action <IDictionary <string, object> > updateHeaders)
{
if (saga == null)
{
throw new ArgumentNullException("saga");
}
Dictionary <string, object> headers = PrepareHeaders(saga, updateHeaders);
IEventStream stream = PrepareStream(saga, headers);
Persist(stream, commitId);
ReleaseAggregateId(saga.Id);
saga.ClearUncommittedEvents();
saga.ClearUndispatchedMessages();
}
static Dictionary <string, object> PrepareHeaders(
ISagaEx saga, Action <IDictionary <string, object> > updateHeaders)
{
var headers = new Dictionary <string, object>();
headers[SagaTypeHeader] = saga.GetType().FullName;
if (updateHeaders != null)
{
updateHeaders(headers);
}
int i = 0;
foreach (object command in saga.GetUndispatchedMessages())
{
headers[UndispatchedMessageHeader + i++] = command;
}
return(headers);
}
IEventStream PrepareStream(ISagaEx saga, Dictionary <string, object> headers)
{
IEventStream stream;
if (!_streams.TryGetValue(saga.Id, out stream))
{
_streams[saga.Id] = stream = _eventStore.CreateStream(saga.Id);
}
foreach (var item in headers)
{
stream.UncommittedHeaders[item.Key] = item.Value;
}
Enumerable.Cast <object>(saga.GetUncommittedEvents())
.Select(x => new EventMessage {
Body = x
})
.ToList()
.ForEach(stream.Add);
return(stream);
}
