Moved using statements to globalusing for EventBusServiceBus
This commit is contained in:
Sumit Ghosh
parent
409fab7521
commit
03b80d037e
@ -1,68 +1,64 @@
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using Microsoft.Azure.ServiceBus;
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using System;
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus;
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
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public class DefaultServiceBusPersisterConnection : IServiceBusPersisterConnection
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{
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public class DefaultServiceBusPersisterConnection : IServiceBusPersisterConnection
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private readonly ServiceBusConnectionStringBuilder _serviceBusConnectionStringBuilder;
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private readonly string _subscriptionClientName;
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private SubscriptionClient _subscriptionClient;
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private ITopicClient _topicClient;
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bool _disposed;
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public DefaultServiceBusPersisterConnection(ServiceBusConnectionStringBuilder serviceBusConnectionStringBuilder,
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string subscriptionClientName)
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{
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private readonly ServiceBusConnectionStringBuilder _serviceBusConnectionStringBuilder;
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private readonly string _subscriptionClientName;
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private SubscriptionClient _subscriptionClient;
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private ITopicClient _topicClient;
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_serviceBusConnectionStringBuilder = serviceBusConnectionStringBuilder ??
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throw new ArgumentNullException(nameof(serviceBusConnectionStringBuilder));
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_subscriptionClientName = subscriptionClientName;
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_subscriptionClient = new SubscriptionClient(_serviceBusConnectionStringBuilder, subscriptionClientName);
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_topicClient = new TopicClient(_serviceBusConnectionStringBuilder, RetryPolicy.Default);
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}
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bool _disposed;
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public DefaultServiceBusPersisterConnection(ServiceBusConnectionStringBuilder serviceBusConnectionStringBuilder,
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string subscriptionClientName)
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{
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_serviceBusConnectionStringBuilder = serviceBusConnectionStringBuilder ??
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throw new ArgumentNullException(nameof(serviceBusConnectionStringBuilder));
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_subscriptionClientName = subscriptionClientName;
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_subscriptionClient = new SubscriptionClient(_serviceBusConnectionStringBuilder, subscriptionClientName);
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_topicClient = new TopicClient(_serviceBusConnectionStringBuilder, RetryPolicy.Default);
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}
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public ITopicClient TopicClient
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{
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get
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{
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if (_topicClient.IsClosedOrClosing)
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{
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_topicClient = new TopicClient(_serviceBusConnectionStringBuilder, RetryPolicy.Default);
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}
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return _topicClient;
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}
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}
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public ISubscriptionClient SubscriptionClient
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{
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get
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{
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if (_subscriptionClient.IsClosedOrClosing)
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{
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_subscriptionClient = new SubscriptionClient(_serviceBusConnectionStringBuilder, _subscriptionClientName);
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}
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return _subscriptionClient;
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}
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}
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public ServiceBusConnectionStringBuilder ServiceBusConnectionStringBuilder => _serviceBusConnectionStringBuilder;
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public ITopicClient CreateModel()
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public ITopicClient TopicClient
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{
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get
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{
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if (_topicClient.IsClosedOrClosing)
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{
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_topicClient = new TopicClient(_serviceBusConnectionStringBuilder, RetryPolicy.Default);
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}
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return _topicClient;
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}
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}
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public void Dispose()
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public ISubscriptionClient SubscriptionClient
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{
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get
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{
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if (_disposed) return;
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_disposed = true;
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if (_subscriptionClient.IsClosedOrClosing)
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{
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_subscriptionClient = new SubscriptionClient(_serviceBusConnectionStringBuilder, _subscriptionClientName);
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}
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return _subscriptionClient;
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}
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}
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public ServiceBusConnectionStringBuilder ServiceBusConnectionStringBuilder => _serviceBusConnectionStringBuilder;
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public ITopicClient CreateModel()
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{
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if (_topicClient.IsClosedOrClosing)
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{
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_topicClient = new TopicClient(_serviceBusConnectionStringBuilder, RetryPolicy.Default);
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}
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return _topicClient;
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}
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public void Dispose()
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{
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if (_disposed) return;
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_disposed = true;
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}
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}
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@ -1,203 +1,191 @@
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus;
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public class EventBusServiceBus : IEventBus
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{
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using Autofac;
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using Microsoft.Azure.ServiceBus;
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using Microsoft.eShopOnContainers.BuildingBlocks.EventBus;
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using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
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using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
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using Microsoft.Extensions.Logging;
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using System;
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using System.Text;
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using System.Text.Json;
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using System.Threading.Tasks;
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private readonly IServiceBusPersisterConnection _serviceBusPersisterConnection;
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private readonly ILogger<EventBusServiceBus> _logger;
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private readonly IEventBusSubscriptionsManager _subsManager;
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private readonly ILifetimeScope _autofac;
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private readonly string AUTOFAC_SCOPE_NAME = "eshop_event_bus";
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private const string INTEGRATION_EVENT_SUFFIX = "IntegrationEvent";
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public class EventBusServiceBus : IEventBus
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public EventBusServiceBus(IServiceBusPersisterConnection serviceBusPersisterConnection,
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ILogger<EventBusServiceBus> logger, IEventBusSubscriptionsManager subsManager, ILifetimeScope autofac)
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{
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private readonly IServiceBusPersisterConnection _serviceBusPersisterConnection;
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private readonly ILogger<EventBusServiceBus> _logger;
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private readonly IEventBusSubscriptionsManager _subsManager;
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private readonly ILifetimeScope _autofac;
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private readonly string AUTOFAC_SCOPE_NAME = "eshop_event_bus";
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private const string INTEGRATION_EVENT_SUFFIX = "IntegrationEvent";
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_serviceBusPersisterConnection = serviceBusPersisterConnection;
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_logger = logger ?? throw new ArgumentNullException(nameof(logger));
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_subsManager = subsManager ?? new InMemoryEventBusSubscriptionsManager();
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_autofac = autofac;
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public EventBusServiceBus(IServiceBusPersisterConnection serviceBusPersisterConnection,
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ILogger<EventBusServiceBus> logger, IEventBusSubscriptionsManager subsManager, ILifetimeScope autofac)
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RemoveDefaultRule();
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RegisterSubscriptionClientMessageHandler();
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}
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public void Publish(IntegrationEvent @event)
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{
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var eventName = @event.GetType().Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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var jsonMessage = JsonSerializer.Serialize(@event);
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var body = Encoding.UTF8.GetBytes(jsonMessage);
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var message = new Message
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{
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_serviceBusPersisterConnection = serviceBusPersisterConnection;
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_logger = logger ?? throw new ArgumentNullException(nameof(logger));
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_subsManager = subsManager ?? new InMemoryEventBusSubscriptionsManager();
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_autofac = autofac;
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MessageId = Guid.NewGuid().ToString(),
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Body = body,
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Label = eventName,
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};
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RemoveDefaultRule();
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RegisterSubscriptionClientMessageHandler();
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_serviceBusPersisterConnection.TopicClient.SendAsync(message)
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.GetAwaiter()
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.GetResult();
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}
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public void SubscribeDynamic<TH>(string eventName)
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where TH : IDynamicIntegrationEventHandler
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{
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_logger.LogInformation("Subscribing to dynamic event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
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_subsManager.AddDynamicSubscription<TH>(eventName);
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}
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public void Subscribe<T, TH>()
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where T : IntegrationEvent
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where TH : IIntegrationEventHandler<T>
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{
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var eventName = typeof(T).Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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var containsKey = _subsManager.HasSubscriptionsForEvent<T>();
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if (!containsKey)
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{
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try
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{
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_serviceBusPersisterConnection.SubscriptionClient.AddRuleAsync(new RuleDescription
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{
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Filter = new CorrelationFilter { Label = eventName },
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Name = eventName
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}).GetAwaiter().GetResult();
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}
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catch (ServiceBusException)
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{
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_logger.LogWarning("The messaging entity {eventName} already exists.", eventName);
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}
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}
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public void Publish(IntegrationEvent @event)
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_logger.LogInformation("Subscribing to event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
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_subsManager.AddSubscription<T, TH>();
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}
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public void Unsubscribe<T, TH>()
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where T : IntegrationEvent
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where TH : IIntegrationEventHandler<T>
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{
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var eventName = typeof(T).Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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try
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{
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var eventName = @event.GetType().Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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var jsonMessage = JsonSerializer.Serialize(@event);
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var body = Encoding.UTF8.GetBytes(jsonMessage);
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var message = new Message
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{
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MessageId = Guid.NewGuid().ToString(),
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Body = body,
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Label = eventName,
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};
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_serviceBusPersisterConnection.TopicClient.SendAsync(message)
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_serviceBusPersisterConnection
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.SubscriptionClient
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.RemoveRuleAsync(eventName)
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.GetAwaiter()
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.GetResult();
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}
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public void SubscribeDynamic<TH>(string eventName)
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where TH : IDynamicIntegrationEventHandler
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catch (MessagingEntityNotFoundException)
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{
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_logger.LogInformation("Subscribing to dynamic event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
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_subsManager.AddDynamicSubscription<TH>(eventName);
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_logger.LogWarning("The messaging entity {eventName} Could not be found.", eventName);
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}
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public void Subscribe<T, TH>()
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where T : IntegrationEvent
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where TH : IIntegrationEventHandler<T>
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{
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var eventName = typeof(T).Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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_logger.LogInformation("Unsubscribing from event {EventName}", eventName);
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var containsKey = _subsManager.HasSubscriptionsForEvent<T>();
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if (!containsKey)
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_subsManager.RemoveSubscription<T, TH>();
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}
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public void UnsubscribeDynamic<TH>(string eventName)
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where TH : IDynamicIntegrationEventHandler
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{
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_logger.LogInformation("Unsubscribing from dynamic event {EventName}", eventName);
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_subsManager.RemoveDynamicSubscription<TH>(eventName);
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}
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public void Dispose()
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{
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_subsManager.Clear();
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}
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private void RegisterSubscriptionClientMessageHandler()
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{
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_serviceBusPersisterConnection.SubscriptionClient.RegisterMessageHandler(
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async (message, token) =>
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{
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try
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var eventName = $"{message.Label}{INTEGRATION_EVENT_SUFFIX}";
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var messageData = Encoding.UTF8.GetString(message.Body);
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// Complete the message so that it is not received again.
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if (await ProcessEvent(eventName, messageData))
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{
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_serviceBusPersisterConnection.SubscriptionClient.AddRuleAsync(new RuleDescription
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{
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Filter = new CorrelationFilter { Label = eventName },
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Name = eventName
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}).GetAwaiter().GetResult();
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await _serviceBusPersisterConnection.SubscriptionClient.CompleteAsync(message.SystemProperties.LockToken);
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}
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catch (ServiceBusException)
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{
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_logger.LogWarning("The messaging entity {eventName} already exists.", eventName);
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}
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}
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},
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new MessageHandlerOptions(ExceptionReceivedHandler) { MaxConcurrentCalls = 10, AutoComplete = false });
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}
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_logger.LogInformation("Subscribing to event {EventName} with {EventHandler}", eventName, typeof(TH).Name);
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private Task ExceptionReceivedHandler(ExceptionReceivedEventArgs exceptionReceivedEventArgs)
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{
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var ex = exceptionReceivedEventArgs.Exception;
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var context = exceptionReceivedEventArgs.ExceptionReceivedContext;
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_subsManager.AddSubscription<T, TH>();
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}
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_logger.LogError(ex, "ERROR handling message: {ExceptionMessage} - Context: {@ExceptionContext}", ex.Message, context);
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public void Unsubscribe<T, TH>()
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where T : IntegrationEvent
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where TH : IIntegrationEventHandler<T>
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return Task.CompletedTask;
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}
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private async Task<bool> ProcessEvent(string eventName, string message)
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{
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var processed = false;
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if (_subsManager.HasSubscriptionsForEvent(eventName))
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{
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var eventName = typeof(T).Name.Replace(INTEGRATION_EVENT_SUFFIX, "");
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try
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using (var scope = _autofac.BeginLifetimeScope(AUTOFAC_SCOPE_NAME))
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{
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_serviceBusPersisterConnection
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.SubscriptionClient
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.RemoveRuleAsync(eventName)
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.GetAwaiter()
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.GetResult();
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}
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catch (MessagingEntityNotFoundException)
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{
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_logger.LogWarning("The messaging entity {eventName} Could not be found.", eventName);
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}
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_logger.LogInformation("Unsubscribing from event {EventName}", eventName);
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_subsManager.RemoveSubscription<T, TH>();
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}
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public void UnsubscribeDynamic<TH>(string eventName)
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where TH : IDynamicIntegrationEventHandler
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{
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_logger.LogInformation("Unsubscribing from dynamic event {EventName}", eventName);
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_subsManager.RemoveDynamicSubscription<TH>(eventName);
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}
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public void Dispose()
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{
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_subsManager.Clear();
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}
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private void RegisterSubscriptionClientMessageHandler()
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{
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_serviceBusPersisterConnection.SubscriptionClient.RegisterMessageHandler(
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async (message, token) =>
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var subscriptions = _subsManager.GetHandlersForEvent(eventName);
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foreach (var subscription in subscriptions)
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{
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var eventName = $"{message.Label}{INTEGRATION_EVENT_SUFFIX}";
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var messageData = Encoding.UTF8.GetString(message.Body);
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// Complete the message so that it is not received again.
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if (await ProcessEvent(eventName, messageData))
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if (subscription.IsDynamic)
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{
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await _serviceBusPersisterConnection.SubscriptionClient.CompleteAsync(message.SystemProperties.LockToken);
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}
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},
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new MessageHandlerOptions(ExceptionReceivedHandler) { MaxConcurrentCalls = 10, AutoComplete = false });
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}
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private Task ExceptionReceivedHandler(ExceptionReceivedEventArgs exceptionReceivedEventArgs)
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{
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var ex = exceptionReceivedEventArgs.Exception;
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var context = exceptionReceivedEventArgs.ExceptionReceivedContext;
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_logger.LogError(ex, "ERROR handling message: {ExceptionMessage} - Context: {@ExceptionContext}", ex.Message, context);
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return Task.CompletedTask;
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}
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private async Task<bool> ProcessEvent(string eventName, string message)
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{
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var processed = false;
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if (_subsManager.HasSubscriptionsForEvent(eventName))
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{
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using (var scope = _autofac.BeginLifetimeScope(AUTOFAC_SCOPE_NAME))
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{
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var subscriptions = _subsManager.GetHandlersForEvent(eventName);
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foreach (var subscription in subscriptions)
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{
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if (subscription.IsDynamic)
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{
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var handler = scope.ResolveOptional(subscription.HandlerType) as IDynamicIntegrationEventHandler;
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if (handler == null) continue;
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var handler = scope.ResolveOptional(subscription.HandlerType) as IDynamicIntegrationEventHandler;
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if (handler == null) continue;
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using dynamic eventData = JsonDocument.Parse(message);
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await handler.Handle(eventData);
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}
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else
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{
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var handler = scope.ResolveOptional(subscription.HandlerType);
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if (handler == null) continue;
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var eventType = _subsManager.GetEventTypeByName(eventName);
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var integrationEvent = JsonSerializer.Deserialize(message, eventType);
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var concreteType = typeof(IIntegrationEventHandler<>).MakeGenericType(eventType);
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await (Task)concreteType.GetMethod("Handle").Invoke(handler, new object[] { integrationEvent });
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}
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using dynamic eventData = JsonDocument.Parse(message);
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await handler.Handle(eventData);
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}
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else
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{
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var handler = scope.ResolveOptional(subscription.HandlerType);
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if (handler == null) continue;
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var eventType = _subsManager.GetEventTypeByName(eventName);
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var integrationEvent = JsonSerializer.Deserialize(message, eventType);
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var concreteType = typeof(IIntegrationEventHandler<>).MakeGenericType(eventType);
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await (Task)concreteType.GetMethod("Handle").Invoke(handler, new object[] { integrationEvent });
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}
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}
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processed = true;
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}
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return processed;
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processed = true;
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}
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return processed;
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}
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private void RemoveDefaultRule()
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private void RemoveDefaultRule()
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{
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try
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{
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try
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{
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_serviceBusPersisterConnection
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.SubscriptionClient
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.RemoveRuleAsync(RuleDescription.DefaultRuleName)
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.GetAwaiter()
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.GetResult();
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}
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catch (MessagingEntityNotFoundException)
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{
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_logger.LogWarning("The messaging entity {DefaultRuleName} Could not be found.", RuleDescription.DefaultRuleName);
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}
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_serviceBusPersisterConnection
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.SubscriptionClient
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.RemoveRuleAsync(RuleDescription.DefaultRuleName)
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.GetAwaiter()
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.GetResult();
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}
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catch (MessagingEntityNotFoundException)
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{
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_logger.LogWarning("The messaging entity {DefaultRuleName} Could not be found.", RuleDescription.DefaultRuleName);
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}
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}
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}
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@ -1,11 +1,7 @@
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus
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{
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using Microsoft.Azure.ServiceBus;
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using System;
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namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus;
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public interface IServiceBusPersisterConnection : IDisposable
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{
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ITopicClient TopicClient { get; }
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ISubscriptionClient SubscriptionClient { get; }
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}
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}
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public interface IServiceBusPersisterConnection : IDisposable
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{
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ITopicClient TopicClient { get; }
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ISubscriptionClient SubscriptionClient { get; }
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}
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