public Task StartAsync(InboxConfig inboxConfig, CancellationToken cancellationToken = default)
{
InboxConfig = inboxConfig;
Inbox = (IEventInbox)ServiceProvider.GetRequiredService(inboxConfig.ImplementationType);
Timer.Start(cancellationToken);
return(Task.CompletedTask);
}
public override async Task ProcessFromInboxAsync(
IncomingEventInfo incomingEvent,
InboxConfig inboxConfig)
{
var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
if (eventType == null)
{
return;
}
var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
var exceptions = new List <Exception>();
await TriggerHandlersAsync(eventType, eventData, exceptions, inboxConfig);
if (exceptions.Any())
{
ThrowOriginalExceptions(eventType, exceptions);
}
}
public static void UseMySQL <TDbContext>(this InboxConfig outboxConfig)
where TDbContext : IHasEventInbox
{
outboxConfig.ImplementationType = typeof(ISqlRawDbContextEventInbox <TDbContext>);
}
public abstract Task ProcessFromInboxAsync(
IncomingEventInfo incomingEvent,
InboxConfig inboxConfig);
protected virtual async Task TriggerHandlersAsync(Type eventType, object eventData, List <Exception> exceptions, InboxConfig inboxConfig = null)
{
await new SynchronizationContextRemover();
foreach (var handlerFactories in GetHandlerFactories(eventType))
{
foreach (var handlerFactory in handlerFactories.EventHandlerFactories)
{
await TriggerHandlerAsync(handlerFactory, handlerFactories.EventType, eventData, exceptions, inboxConfig);
}
}
//Implements generic argument inheritance. See IEventDataWithInheritableGenericArgument
if (eventType.GetTypeInfo().IsGenericType&&
eventType.GetGenericArguments().Length == 1 &&
typeof(IEventDataWithInheritableGenericArgument).IsAssignableFrom(eventType))
{
var genericArg = eventType.GetGenericArguments()[0];
var baseArg = genericArg.GetTypeInfo().BaseType;
if (baseArg != null)
{
var baseEventType = eventType.GetGenericTypeDefinition().MakeGenericType(baseArg);
var constructorArgs = ((IEventDataWithInheritableGenericArgument)eventData).GetConstructorArgs();
var baseEventData = Activator.CreateInstance(baseEventType, constructorArgs);
await PublishToEventBusAsync(baseEventType, baseEventData);
}
}
}
protected virtual async Task TriggerHandlerAsync(IEventHandlerFactory asyncHandlerFactory, Type eventType,
object eventData, List <Exception> exceptions, InboxConfig inboxConfig = null)
{
using (var eventHandlerWrapper = asyncHandlerFactory.GetHandler())
{
try
{
var handlerType = eventHandlerWrapper.EventHandler.GetType();
if (inboxConfig?.HandlerSelector != null &&
!inboxConfig.HandlerSelector(handlerType))
{
return;
}
using (CurrentTenant.Change(GetEventDataTenantId(eventData)))
{
if (ReflectionHelper.IsAssignableToGenericType(handlerType, typeof(ILocalEventHandler <>)))
{
var method = typeof(ILocalEventHandler <>)
.MakeGenericType(eventType)
.GetMethod(
nameof(ILocalEventHandler <object> .HandleEventAsync),
new[] { eventType }
);
await((Task)method.Invoke(eventHandlerWrapper.EventHandler, new[] { eventData }));
}
else if (ReflectionHelper.IsAssignableToGenericType(handlerType, typeof(IDistributedEventHandler <>)))
{
var method = typeof(IDistributedEventHandler <>)
.MakeGenericType(eventType)
.GetMethod(
nameof(IDistributedEventHandler <object> .HandleEventAsync),
new[] { eventType }
);
await((Task)method.Invoke(eventHandlerWrapper.EventHandler, new[] { eventData }));
}
else
{
throw new AbpException("The object instance is not an event handler. Object type: " + handlerType.AssemblyQualifiedName);
}
}
}
catch (TargetInvocationException ex)
{
exceptions.Add(ex.InnerException);
}
catch (Exception ex)
{
exceptions.Add(ex);
}
}
}
protected virtual async Task TriggerHandlerAsync(IEventHandlerFactory asyncHandlerFactory, Type eventType,
object eventData, List <Exception> exceptions, InboxConfig inboxConfig = null)
{
using (var eventHandlerWrapper = asyncHandlerFactory.GetHandler())
{
try
{
var handlerType = eventHandlerWrapper.EventHandler.GetType();
if (inboxConfig?.HandlerSelector != null &&
!inboxConfig.HandlerSelector(handlerType))
{
return;
}
using (CurrentTenant.Change(GetEventDataTenantId(eventData)))
{
await EventHandlerInvoker.InvokeAsync(eventHandlerWrapper.EventHandler, eventData, eventType);
}
}
catch (TargetInvocationException ex)
{
exceptions.Add(ex.InnerException);
}
catch (Exception ex)
{
exceptions.Add(ex);
}
}
}
public Emails(IOptions <InboxConfig> inboxConfig)
{
this.inboxConfig = inboxConfig.Value;
}
public static void UseNpgsql <TDbContext>(this InboxConfig outboxConfig)
where TDbContext : IHasEventInbox
{
outboxConfig.ImplementationType = typeof(IPostgreSqlDbContextEventInbox <TDbContext>);
}
public static void UseOracle <TDbContext>(this InboxConfig outboxConfig)
where TDbContext : IHasEventInbox
{
outboxConfig.ImplementationType = typeof(IOracleDbContextEventInbox <TDbContext>);
}
public static void UseMongoDbContext <TMongoDbContext>(this InboxConfig outboxConfig)
where TMongoDbContext : IHasEventInbox
{
outboxConfig.ImplementationType = typeof(IMongoDbContextEventInbox <TMongoDbContext>);
}