public void Subscribe <T, TH>() where T : IntegrationEvent where TH : IIntegrationEventHandler <T>
{
var eventName = _subscriptionsManager.GetEventKey <T>();
if (!_persistentConnection.IsConnected)
{
_persistentConnection.TryConnect();
}
var hasSubs = _subscriptionsManager.HasSubscriptionsForEvent(eventName);
if (!hasSubs)
{
using (var channel = _persistentConnection.CreateModel())
{
channel.QueueBind(_queueName,
exchange: _brokerName,
routingKey: eventName);
}
}
_logger.LogInformation("Subscribing to event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
_subscriptionsManager.AddSubscription <T, TH>();
StartBasicConsume();
}
public void Publish(IntegrationEvent @event)
{
TryConnectIfDisconnected();
var addToQueuePolicy = RetryPolicy.Handle <BrokerUnreachableException>()
.Or <SocketException>()
.WaitAndRetry(_config.MaxRetries,
retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(ex, time) => _logger.LogWarning(ex.ToString()));
using (var channel = _persistentConnection.CreateModel())
{
var eventName = _subscriptionsManager.GetEventKey(@event.GetType());
channel.ExchangeDeclare(_config.ExhangeName, _config.ExchangeType);
var message = JsonSerializer.SerializeToString(@event);
var body = Encoding.UTF8.GetBytes(message);
addToQueuePolicy.Execute(() =>
{
var properties = channel.CreateBasicProperties();
properties.DeliveryMode = 2; // persistent
channel.BasicPublish(exchange: _config.ExhangeName,
routingKey: eventName,
mandatory: true,
basicProperties: properties,
body: body);
});
}
}
public void Subscribe <T, TH>() where T : DefaultEvent where TH : IEventHandler <T>
{
var eventName = subscriptionManager.GetEventKey <T>();
DoInternalSubscription(eventName);
subscriptionManager.AddSubscription <T, TH>();
StartConsumer();
}
public void Subscribe <T, TH>()
where T : Event
where TH : IEventHandler <T>
{
var eventName = _subsManager.GetEventKey <T>();
DoInternalSubscription(eventName);
_logger.LogInformation("Subscribing to event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
_subsManager.AddSubscription <T, TH>();
StartBasicConsume();
}
public void Subscribe <T, TH>()
where T : EventArguments
where TH : IEventHandler <T>
{
var eventName = _subsManager.GetEventKey <T>();
DoInternalSubscription(eventName);
_subsManager.AddSubscription <T, TH>();
}
public void Subscribe <TIntegrationEvent, TIntegrationEventHandler>()
where TIntegrationEvent : IntegrationEvent
where TIntegrationEventHandler : IIntegrationEventHandler <TIntegrationEvent>
{
var eventName = _subscriptionsManager.GetEventKey <TIntegrationEvent>();
DoInternalSubscription(eventName);
_subscriptionsManager.AddSubscription <TIntegrationEvent, TIntegrationEventHandler>();
throw new NotImplementedException();
}
/// <summary>
///
/// </summary>
/// <typeparam name="TEvent"></typeparam>
/// <param name="event"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <bool> PublishEventAsync <TEvent>(
TEvent @event,
CancellationToken cancellationToken = default)
{
var result = await eventStore.PushAsync(new EventWrapper
{
Name = subscriptionsManager.GetEventKey <TEvent>(),
Message = JsonSerializer.Serialize(@event),
});
logger.LogInformation($"Publish event {(result ? "success" : "failed")}");
if (task == null)
{
DoConsume();
}
return(result);
}
/// <summary>
///
/// </summary>
/// <typeparam name="TEvent"></typeparam>
/// <typeparam name="TEventHandler"></typeparam>
public void RegisterEventHandler <TEvent, TEventHandler>()
where TEventHandler : IEventHandler <TEvent>
{
var eventName = subscriptionsManager.GetEventKey <TEvent>();
if (subscriptionsManager.HasSubscriptions(eventName))
{
return;
}
if (!connection.IsConnected)
{
connection.TryConnect();
}
using var model = connection.CreateModel();
model.QueueBind(
queue: settings.QueueName,
exchange: BROKER_NAME,
routingKey: eventName);
subscriptionsManager.AddSubscription <TEvent, TEventHandler>();
}
public static string GetEventKey <T>(this ISubscriptionsManager subscriptionsManager)
{
return(subscriptionsManager.GetEventKey(typeof(T)));
}
public static bool HasSubscriptionsForEvent <T>(this ISubscriptionsManager subscriptionsManager) where T : IntegrationEvent
{
var eventName = subscriptionsManager.GetEventKey <T>();
return(subscriptionsManager.HasSubscriptionsForEvent(eventName));
}
public static IEnumerable <SubscriptionInfo> GetHandlersForEvent <T>(this ISubscriptionsManager subscriptionsManager) where T : IntegrationEvent
{
var eventName = subscriptionsManager.GetEventKey <T>();
return(subscriptionsManager.GetHandlersForEvent(eventName));
}