private void CreateTopicIfNotExists(NamespaceManager namespaceManager, TopicSettings topic)
{
var topicDescription =
new TopicDescription(topic.Path)
{
RequiresDuplicateDetection = true
};
if (topic.DuplicateDetectionHistoryTimeWindow > TimeSpan.Zero)
{
topicDescription.DuplicateDetectionHistoryTimeWindow = topic.DuplicateDetectionHistoryTimeWindow;
}
try
{
namespaceManager.CreateTopic(topicDescription);
}
catch (MessagingEntityAlreadyExistsException) { }
}
public EventProcessor CreateEventProcessor(string subscription, IEventHandler handler, ITextSerializer serializer, bool instrumentationEnabled = false)
{
if (!this.initialized)
{
throw new InvalidOperationException("Service bus configuration has not been initialized.");
}
TopicSettings topicSettings = null;
SubscriptionSettings subscriptionSettings = null;
foreach (var settings in this.settings.Topics.Where(t => t.IsEventBus))
{
subscriptionSettings = settings.Subscriptions.Find(s => s.Name == subscription);
if (subscriptionSettings != null)
{
topicSettings = settings;
break;
}
}
if (subscriptionSettings == null)
{
throw new ArgumentOutOfRangeException(
string.Format(
CultureInfo.CurrentCulture,
"Subscription '{0}' has not been registered for an event bus topic in the service bus configuration.",
subscription));
}
IMessageReceiver receiver;
if (subscriptionSettings.RequiresSession)
{
var instrumentation = new SessionSubscriptionReceiverInstrumentation(subscription, instrumentationEnabled);
try
{
receiver = (IMessageReceiver) new SessionSubscriptionReceiver(this.settings, topicSettings.Path, subscription, true, instrumentation);
}
catch
{
instrumentation.Dispose();
throw;
}
}
else
{
var instrumentation = new SubscriptionReceiverInstrumentation(subscription, instrumentationEnabled);
try
{
receiver = (IMessageReceiver) new SubscriptionReceiver(this.settings, topicSettings.Path, subscription, true, instrumentation);
}
catch
{
instrumentation.Dispose();
throw;
}
}
EventProcessor processor;
try
{
processor = new EventProcessor(receiver, serializer);
}
catch
{
using (receiver as IDisposable) { }
throw;
}
try
{
processor.Register(handler);
return(processor);
}
catch
{
processor.Dispose();
throw;
}
}
private static void UpdateRules(NamespaceManager namespaceManager, string servicebusConnectionString, TopicSettings topic, SubscriptionSettings subscription)
{
string sqlExpression = null;
if (!string.IsNullOrWhiteSpace(subscription.SqlFilter))
{
sqlExpression = subscription.SqlFilter;
}
UpdateSqlFilter(namespaceManager, servicebusConnectionString, sqlExpression, subscription.Name, topic.Path);
}
private static void UpdateSubscriptionIfExists(NamespaceManager namespaceManager, string servicebusConnectionString, TopicSettings topic, UpdateSubscriptionIfExists action)
{
if (string.IsNullOrWhiteSpace(action.Name))
{
throw new ArgumentException("action");
}
if (string.IsNullOrWhiteSpace(action.SqlFilter))
{
throw new ArgumentException("action");
}
UpdateSqlFilter(namespaceManager, servicebusConnectionString, action.SqlFilter, action.Name, topic.Path);
}
private void CreateSubscriptionIfNotExists(NamespaceManager namespaceManager, TopicSettings topic, SubscriptionSettings subscription)
{
var subscriptionDescription =
new SubscriptionDescription(topic.Path, subscription.Name)
{
RequiresSession = subscription.RequiresSession,
LockDuration = TimeSpan.FromSeconds(150),
};
try
{
namespaceManager.CreateSubscription(subscriptionDescription);
}
catch (MessagingEntityAlreadyExistsException) { }
}
