public bool Subscribe(Type dataType, ICallHandler handler, bool receiveSelfPublish, IEnumerable<BusHeader> filter)
{
DataContract dataContract = new DataContract(dataType);
return RegisterType(dataContract.Key,
new MessageSubscribtionInfo(dataContract.Key, handler,
dataContract.Serializer, receiveSelfPublish,
filter ?? Enumerable.Empty<BusHeader>()));
}
public void RegisterSubscribtion(object instance)
{
Type type = instance.GetType();
object[] attributes = type.GetCustomAttributes(typeof (SubscribtionAttribute), false);
if (attributes.Length == 0)
{
throw new Exception("SubscribtionAttribute is missing");
}
foreach (MethodInfo method in type.GetMethods(BindingFlags.Public | BindingFlags.Instance))
{
object[] methodAttributes = method.GetCustomAttributes(typeof (MessageSubscriptionAttribute), false);
if (methodAttributes.Length == 0)
{
continue;
}
ParameterInfo[] parameterInfos = method.GetParameters();
if (parameterInfos.Length != 1)
{
throw new Exception("Method anotated by MessageSubscribtionAttribute must have exacly one parameter");
}
ParameterInfo parameterInfo = parameterInfos[0];
MessageSubscriptionAttribute messageSubscriptionAttribute = (MessageSubscriptionAttribute) methodAttributes[0];
Type parameterType = parameterInfo.ParameterType;
DataContract dataContract;
ICallHandler handler;
MethodInfo m = method;
Action<object> action = o => m.Invoke(instance, new[] {o});
if (parameterType.IsGenericType && parameterType.GetGenericTypeDefinition() == typeof (BusMessage<>))
{
Type[] genericArguments = parameterType.GetGenericArguments();
dataContract = new DataContract(genericArguments[0]);
Type handlerType = typeof(BusMessageHandler<>).MakeGenericType(genericArguments);
handler = (ICallHandler) Activator.CreateInstance(handlerType, action);
}
else
{
dataContract = new DataContract(parameterType);
handler = new ActionHandler(action);
}
List<BusHeader> filters = new List<BusHeader>();
object[] filterAttributes = parameterInfo.GetCustomAttributes(typeof (HeaderFilterAttribute), true);
foreach (HeaderFilterAttribute filterAttribute in filterAttributes)
{
filters.Add(new BusHeader(filterAttribute.Name, filterAttribute.Value));
}
RegisterType(dataContract.Key,
new MessageSubscribtionInfo(dataContract.Key, handler,
dataContract.Serializer,
false,
filters));
}
}
