async Task ISagaRepository <TSaga> .Send <T>(ConsumeContext <T> context, ISagaPolicy <TSaga, T> policy, IPipe <SagaConsumeContext <TSaga, T> > next)
{
MessageSessionContext sessionContext;
if (!context.TryGetPayload(out sessionContext))
{
throw new SagaException($"The session-based saga repository requires an active message session: {TypeMetadataCache<TSaga>.ShortName}",
typeof(TSaga), typeof(T));
}
Guid sessionId;
if (Guid.TryParse(sessionContext.SessionId, out sessionId))
{
context = new CorrelationIdConsumeContextProxy <T>(context, sessionId);
}
var saga = await ReadSagaState(sessionContext).ConfigureAwait(false);
if (saga == null)
{
var missingSagaPipe = new MissingPipe <T>(next, WriteSagaState);
await policy.Missing(context, missingSagaPipe).ConfigureAwait(false);
}
else
{
SagaConsumeContext <TSaga, T> sagaConsumeContext = new MessageSessionSagaConsumeContext <TSaga, T>(context, sessionContext, saga);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("SAGA:{0}:{1} Existing {2}", TypeMetadataCache <TSaga> .ShortName, sessionContext.SessionId, TypeMetadataCache <T> .ShortName);
}
await policy.Existing(sagaConsumeContext, next).ConfigureAwait(false);
if (!sagaConsumeContext.IsCompleted)
{
await WriteSagaState(sessionContext, saga).ConfigureAwait(false);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("SAGA:{0}:{1} Updated {2}", TypeMetadataCache <TSaga> .ShortName, sessionContext.SessionId,
TypeMetadataCache <T> .ShortName);
}
}
}
}
public async Task Send(SagaConsumeContext <TSaga, TMessage> context)
{
var sessionContext = context.GetPayload <MessageSessionContext>();
var proxy = new MessageSessionSagaConsumeContext <TSaga, TMessage>(context, sessionContext, context.Saga);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("SAGA:{0}:{1} Created {2}", TypeMetadataCache <TSaga> .ShortName, sessionContext.SessionId,
TypeMetadataCache <TMessage> .ShortName);
}
try
{
await _next.Send(proxy).ConfigureAwait(false);
if (!proxy.IsCompleted)
{
await _writeSagaState(sessionContext, proxy.Saga).ConfigureAwait(false);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("SAGA:{0}:{1} Saved {2}", TypeMetadataCache <TSaga> .ShortName, sessionContext.SessionId,
TypeMetadataCache <TMessage> .ShortName);
}
}
}
catch (Exception)
{
if (_log.IsDebugEnabled)
{
_log.DebugFormat("SAGA:{0}:{1} Unsaved(Fault) {2}", TypeMetadataCache <TSaga> .ShortName, sessionContext.SessionId,
TypeMetadataCache <TMessage> .ShortName);
}
throw;
}
}