/// <summary>
/// Dispatch a standard <see cref="SagaTimeout" /> message to current
/// saga.
/// </summary>
/// <param name="dateTime"></param>
/// <param name="timeOutKey">key related to this timeOut, it can be null</param>
public void DispatchTimeout(DateTime dateTime, string timeOutKey = null)
{
var timeout = new SagaTimeout(this.Id, timeOutKey);
var message = new SagaDeferredMessage(timeout, dateTime);
Dispatch(message);
}
public async Task Dispatch(IChunk commit)
{
var changeset = commit.Payload as Changeset;
if (changeset != null)
{
var reactions = changeset.Events.OfType <MessageReaction>();
foreach (var reaction in reactions)
{
foreach (var message in reaction.MessagesOut)
{
try
{
if (message is IScheduledAt scheduledAt)
{
TimeSpan?at = null;
if (scheduledAt.At.ToUniversalTime() > DateTime.UtcNow)
{
at = scheduledAt.At.ToUniversalTime().Subtract(DateTime.UtcNow);
}
await Dispatch(scheduledAt.Payload, at).ConfigureAwait(false);
}
else if (message is IMessageAndTimeout messageAndTimeout)
{
//1) send the message if needed
if (messageAndTimeout.SendMessageOut)
{
await Dispatch(messageAndTimeout.Message, null).ConfigureAwait(false);
}
//2) send the timeout
String sagaId;
if (messageAndTimeout.SentToSelf)
{
sagaId = commit.PartitionId;
}
else
{
sagaId = messageAndTimeout.Target;
}
SagaTimeout timeout = new SagaTimeout(sagaId, GetCorrelationTimeoutKey(messageAndTimeout));
await Dispatch(timeout, messageAndTimeout.Delay).ConfigureAwait(false);
}
else
{
await Dispatch(message, null).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Logger.ErrorFormat(ex, "Error dispatching commit Id {0} Error {1}", commit.Position, ex.Message);
}
}
}
}
_currentCheckpoint.LastDispatchedPosition = commit.Position;
_checkpointCollection.Save(_currentCheckpoint, _currentCheckpoint.Id);
}