protected async Task InitializeAsync(
string hostName,
string eventHubName,
string consumerGroupName,
string eventHubConnectionString,
string checkpointStorageAccount,
int maxBatchSize,
int prefetchCount,
TimeSpan receiveTimeout,
int maxConcurrencyPerProcessor,
IEnumerable <Type> typesToSearch,
Func <string, string, ICircuitBreaker> circuitBreakerFactory,
IDispatcherInstrumentationPublisher instrumentationPublisher)
{
Logger.Info("Initializing event hub listener for {0} ({1})", eventHubName, consumerGroupName);
// Get the consumer group via the Service Bus namespace (identifies the
// consumer)
var ns = NamespaceManager.CreateFromConnectionString(eventHubConnectionString);
try
{
await ns.GetConsumerGroupAsync(eventHubName, consumerGroupName);
Logger.Info("Found consumer group {1} for {0}", eventHubName, consumerGroupName);
}
catch (Exception e)
{
Logger.Error(e, "Could not establish connection to {0} in event hub {1}", consumerGroupName, eventHubName);
throw;
}
var eventHubId = ConfigurationHelper.GetEventHubName(ns.Address, eventHubName);
// Use a custom event processor factory to pass parameters to the
// event host processor
var factory = new EventProcessorFactory(
handlerResolver: new MessageHandlerResolver(typesToSearch, DependencyResolverFactory.GetResolver()),
maxConcurrency: maxConcurrencyPerProcessor,
circuitBreakerFactory: circuitBreakerFactory,
eventHubName: eventHubId,
instrumentationPublisher: instrumentationPublisher);
var options = new EventProcessorOptions
{
MaxBatchSize = maxBatchSize,
PrefetchCount = prefetchCount,
ReceiveTimeOut = receiveTimeout
};
options.ExceptionReceived += options_ExceptionReceived;
// Create the event processor host and register via the factory
_host = new EventProcessorHost(
hostName,
consumerGroupName: consumerGroupName,
eventHubPath: eventHubName,
eventHubConnectionString: eventHubConnectionString,
storageConnectionString: checkpointStorageAccount
);
await _host.RegisterEventProcessorFactoryAsync(factory, options);
Logger.Info("Event processor registered for {0} ({1})", eventHubName, consumerGroupName);
}
protected async Task InitializeAsync(
string hostName,
string eventHubName,
string consumerGroupName,
string eventHubConnectionString,
string checkpointStorageAccount,
int maxBatchSize,
int prefetchCount,
TimeSpan receiveTimeout,
int maxConcurrencyPerProcessor,
IEnumerable<Type> typesToSearch,
Func<string, string, ICircuitBreaker> circuitBreakerFactory,
IDispatcherInstrumentationPublisher instrumentationPublisher)
{
Logger.Info("Initializing event hub listener for {0} ({1})", eventHubName, consumerGroupName);
// Get the consumer group via the Service Bus namespace (identifies the
// consumer)
var ns = NamespaceManager.CreateFromConnectionString(eventHubConnectionString);
try
{
await ns.GetConsumerGroupAsync(eventHubName, consumerGroupName);
Logger.Info("Found consumer group {1} for {0}", eventHubName, consumerGroupName);
}
catch (Exception e)
{
Logger.Error(e, "Could not establish connection to {0} in event hub {1}", consumerGroupName, eventHubName);
throw;
}
var eventHubId = ConfigurationHelper.GetEventHubName(ns.Address, eventHubName);
// Use a custom event processor factory to pass parameters to the
// event host processor
var factory = new EventProcessorFactory(
handlerResolver: new MessageHandlerResolver(typesToSearch, DependencyResolverFactory.GetResolver()),
maxConcurrency: maxConcurrencyPerProcessor,
circuitBreakerFactory: circuitBreakerFactory,
eventHubName: eventHubId,
instrumentationPublisher: instrumentationPublisher);
var options = new EventProcessorOptions
{
MaxBatchSize = maxBatchSize,
PrefetchCount = prefetchCount,
ReceiveTimeOut = receiveTimeout
};
options.ExceptionReceived += options_ExceptionReceived;
// Create the event processor host and register via the factory
_host = new EventProcessorHost(
hostName,
consumerGroupName: consumerGroupName,
eventHubPath: eventHubName,
eventHubConnectionString: eventHubConnectionString,
storageConnectionString: checkpointStorageAccount
);
await _host.RegisterEventProcessorFactoryAsync(factory, options);
Logger.Info("Event processor registered for {0} ({1})", eventHubName, consumerGroupName);
}