public async Task <StreamHandshakeToken> DeliverBatch(GuidId subscriptionId, StreamId streamId, Immutable <IBatchContainer> batch, StreamHandshakeToken handshakeToken)
{
if (logger.IsEnabled(LogLevel.Trace))
{
logger.Trace("DeliverBatch {0} for subscription {1}", batch.Value, subscriptionId);
}
IStreamSubscriptionHandle observer;
if (allStreamObservers.TryGetValue(subscriptionId, out observer))
{
return(await observer.DeliverBatch(batch.Value, handshakeToken));
}
else if (this.streamSubscriptionObserver != null)
{
var streamProvider = this.providerRuntime.ServiceProvider.GetServiceByName <IStreamProvider>(streamId.ProviderName);
if (streamProvider != null)
{
var subscriptionHandlerFactory = new StreamSubscriptionHandlerFactory(streamProvider, streamId, streamId.ProviderName, subscriptionId);
await this.streamSubscriptionObserver.OnSubscribed(subscriptionHandlerFactory);
// check if an observer were attached after handling the new subscription, deliver on it if attached
if (allStreamObservers.TryGetValue(subscriptionId, out observer))
{
return(await observer.DeliverBatch(batch.Value, handshakeToken));
}
}
}
logger.Warn((int)(ErrorCode.StreamProvider_NoStreamForBatch), "{0} got an item for subscription {1}, but I don't have any subscriber for that stream. Dropping on the floor.",
providerRuntime.ExecutingEntityIdentity(), subscriptionId);
// We got an item when we don't think we're the subscriber. This is a normal race condition.
// We can drop the item on the floor, or pass it to the rendezvous, or ...
return(default(StreamHandshakeToken));
}
public async Task <StreamHandshakeToken> DeliverMutable(GuidId subscriptionId, StreamId streamId, object item, StreamSequenceToken currentToken, StreamHandshakeToken handshakeToken)
{
if (logger.IsEnabled(LogLevel.Trace))
{
var itemString = item.ToString();
itemString = (itemString.Length > MAXIMUM_ITEM_STRING_LOG_LENGTH) ? itemString.Substring(0, MAXIMUM_ITEM_STRING_LOG_LENGTH) + "..." : itemString;
logger.Trace("DeliverItem {0} for subscription {1}", itemString, subscriptionId);
}
IStreamSubscriptionHandle observer;
if (allStreamObservers.TryGetValue(subscriptionId, out observer))
{
return(await observer.DeliverItem(item, currentToken, handshakeToken));
}
else if (this.streamSubscriptionObserver != null)
{
var subscriptionHandlerFactory = new StreamSubscriptionHandlerFactory(this.providerManager, streamId, streamId.ProviderName, subscriptionId);
await this.streamSubscriptionObserver.OnSubscribed(subscriptionHandlerFactory);
//check if an observer were attached after handling the new subscription, deliver on it if attached
if (allStreamObservers.TryGetValue(subscriptionId, out observer))
{
return(await observer.DeliverItem(item, currentToken, handshakeToken));
}
}
logger.Warn((int)(ErrorCode.StreamProvider_NoStreamForItem), "{0} got an item for subscription {1}, but I don't have any subscriber for that stream. Dropping on the floor.",
providerRuntime.ExecutingEntityIdentity(), subscriptionId);
// We got an item when we don't think we're the subscriber. This is a normal race condition.
// We can drop the item on the floor, or pass it to the rendezvous, or ...
return(default(StreamHandshakeToken));
}
