public void SetUp()
{
feedChainFactory = new Mock<IFeedChainFactory>();
syndication = new Mock<ISyndicationFormatter>();
messageReceivedHandler = new Mock<EventHandler<Message>>(MockBehavior.Strict);
_persistance = new Mock<ISubscriptionPersistance>();
target = new EventFeedObserver(new Uri("https://feeds.sample.com/"), syndication.Object, feedChainFactory.Object, _persistance.Object);
target.EventReceived += messageReceivedHandler.Object;
}
public static IEventFeedSubscription AsASubscriber(string endpoint, string connectionStringName, Type[] eventTypes, Type[] handlerTypes)
{
var handlerCollection = new HandlerCollection();
handlerCollection.AddRange(handlerTypes);
var deserializer = new SimpleXmlMessageSerializaion { MessageTypes = eventTypes };
var subscriberPersistance = new Subscriber.Persistance.SqlPersistance(connectionStringName);
var failureChannel = new FailureChannel(subscriberPersistance)
{
PollingInterval = new TimeSpan(0, 1, 0)
};
var processingChannel = new ProcessingChannel(deserializer, handlerCollection);
var subscription = new EventFeedObserver(new Uri(endpoint), new AtomFormatter(), new FeedChainFactory(), subscriberPersistance)
{
PollingInterval = new TimeSpan(0, 1, 0)
};
//deadletter messages when they fail
processingChannel.MessageFailed += (sender, args) => failureChannel.DeadLetter(args.Message, args.Exception);
//process messages in handlers when they're picked up from the feed
subscription.EventReceived += processingChannel.ProcessEvent;
//process failed messages again when they're reader
failureChannel.MessageReadyForRetry += processingChannel.ProcessEvent;
//remove failed messages once they're successfully processed
processingChannel.MessageProcessed += (sender, message) => failureChannel.ClearFailure(message);
failureChannel.Poll();
return subscription;
}