public AutoSubscriber(IZaabeeRabbitMqClient rabbitMqClient)
{
_rabbitMqClient = rabbitMqClient;
var rabbitMqClientType = _rabbitMqClient.GetType();
var methods = rabbitMqClientType.GetMethods();
_subscribeMethod = methods.First(m =>
m.Name == "SubscribeEvent" &&
m.GetParameters()[0].Name == "exchange" &&
m.GetParameters()[1].Name == "queue" &&
m.GetParameters()[2].ParameterType.ContainsGenericParameters &&
m.GetParameters()[2].ParameterType.GetGenericTypeDefinition() == typeof(Action <>));
}
public void RegisterMessageSubscriber(Type messageHandlerInterfaceType, Type messageInterfaceType,
string handleName)
{
var messageHandlerTypes = _allTypes
.Where(type => type.IsClass && messageHandlerInterfaceType.IsAssignableFrom(type)).ToList();
var messageTypes = _allTypes
.Where(type => type.IsClass && messageInterfaceType.IsAssignableFrom(type)).ToList();
var rabbitMqClientType = _rabbitMqClient.GetType();
var subscribeMethod = rabbitMqClientType.GetMethods().First(m =>
m.Name == "SubscribeEvent" &&
m.GetParameters()[0].Name == "exchange" &&
m.GetParameters()[1].Name == "queue" &&
m.GetParameters()[2].ParameterType.ContainsGenericParameters &&
m.GetParameters()[2].ParameterType.GetGenericTypeDefinition() == typeof(Action <>));
messageHandlerTypes.ForEach(messageHandlerType =>
{
var messageHandleMethods = messageHandlerType.GetMethods()
.Where(m =>
m.Name == handleName &&
m.GetParameters().Count() == 1 &&
messageTypes.Contains(m.GetParameters()[0].ParameterType)
).ToList();
messageHandleMethods.ForEach(handleMethod =>
{
var messageType = handleMethod.GetParameters()[0].ParameterType;
var paramTypeName = GetTypeName(messageType);
var exchangeName = paramTypeName;
var queueName = GetQueueName(handleMethod, paramTypeName);
void HandleAction(object message)
{
var actionT = typeof(Action <>).MakeGenericType(messageType);
using (var scope = _serviceScopeFactory.CreateScope())
{
var handler = scope.ServiceProvider.GetService(messageHandlerType);
var @delegate = Delegate.CreateDelegate(actionT, handler, handleMethod);
@delegate.Method.Invoke(handler, new[] { message });
}
}
subscribeMethod.MakeGenericMethod(messageType)
.Invoke(_rabbitMqClient,
new object[] { exchangeName, queueName, (Action <object>)HandleAction, _prefetch });
});
});
}
private void RegisterIntegrationEventSubscriber()
{
var integrationEventHandlerTypes = ZaabyServerExtension.AllTypes
.Where(type => type.IsClass && typeof(IIntegrationEventHandler).IsAssignableFrom(type)).ToList();
var integrationEventTypes = ZaabyServerExtension.AllTypes
.Where(type => type.IsClass && typeof(IIntegrationEvent).IsAssignableFrom(type)).ToList();
var rabbitMqClientType = _rabbitMqClient.GetType();
var subscribeMethod = rabbitMqClientType.GetMethods().First(m =>
m.Name == "SubscribeEvent" &&
m.GetParameters()[0].Name == "exchange" &&
m.GetParameters()[1].Name == "queue" &&
m.GetParameters()[2].ParameterType.ContainsGenericParameters &&
m.GetParameters()[2].ParameterType.GetGenericTypeDefinition() == typeof(Action <>));
integrationEventHandlerTypes.ForEach(integrationEventHandlerType =>
{
var handleMethods = integrationEventHandlerType.GetMethods()
.Where(m =>
m.Name == "Handle" &&
m.GetParameters().Count() == 1 &&
integrationEventTypes.Contains(m.GetParameters()[0].ParameterType)
).ToList();
handleMethods.ForEach(handleMethod =>
{
var integrationEventType = handleMethod.GetParameters()[0].ParameterType;
var paramTypeName = GetTypeName(integrationEventType);
var exchangeName = paramTypeName;
var queueName = GetQueueName(handleMethod, paramTypeName);
void HandleAction(object integrationEvent)
{
var actionT = typeof(Action <>).MakeGenericType(integrationEventType);
using (var scope = _serviceScopeFactory.CreateScope())
{
var handler = scope.ServiceProvider
.GetService(integrationEventHandlerType);
var @delegate = Delegate.CreateDelegate(actionT, handler, handleMethod);
@delegate.Method.Invoke(handler, new[] { integrationEvent });
}
}
subscribeMethod.MakeGenericMethod(handleMethod.GetParameters()[0].ParameterType)
.Invoke(_rabbitMqClient,
new object[] { exchangeName, queueName, (Action <object>)HandleAction, (ushort)10 });
});
});
}
