public void ExecuteCommandPayload(ICommandPayload commandPayload, Action onCompleteCallback)
{
var commandPayloadType = commandPayload.GetType();
foreach (var methodHandlersPair in _methodHandlersByContextType)
{
if (!methodHandlersPair.Value.ContainsKey(commandPayloadType))
{
continue;
}
if (!_invocationTargets.TryGetValue(methodHandlersPair.Key, out ICommandHandlerContext handlerContext) || handlerContext == null)
{
continue;
}
ExecuteCommandPayload(handlerContext, commandPayload, methodHandlersPair.Value[commandPayloadType], onCompleteCallback);
return;
}
throw new Exception($"No command handler for command payload: {commandPayloadType.Name}.");
}
private void ExecuteCommandPayload(ICommandHandlerContext handlerContext, ICommandPayload commandPayload, MethodInfo methodHandler, Action onCompleteCallback)
{
var handlerContextType = handlerContext.GetType();
var commandPayloadType = commandPayload.GetType();
var commandType = typeof(Command <>);
Type[] typeArgs = { commandPayloadType };
commandType = commandType.MakeGenericType(typeArgs);
var command = (ICommand)Activator.CreateInstance(
commandType,
new object[] {
commandPayload,
CreateQueuedCompletionCallback(
$"{handlerContextType.Name}.{methodHandler.Name}",
onCompleteCallback
)
});
command.Execute(handlerContext, methodHandler);
}
public void ExecuteCommandPayload(ICommandHandlerContext handlerContext, ICommandPayload commandPayload, Action onCompleteCallback)
{
var handlerContextType = handlerContext.GetType();
if (_methodHandlersByContextType.TryGetValue(handlerContextType, out Dictionary <Type, MethodInfo> methodHandlers))
{
var commandPayloadType = commandPayload.GetType();
if (methodHandlers.ContainsKey(commandPayloadType))
{
ExecuteCommandPayload(handlerContext, commandPayload, methodHandlers[commandPayloadType], onCompleteCallback);
}
else
{
throw new Exception($"No command handler for command payload: {commandPayloadType.Name} on type: {handlerContextType.Name}");
}
}
else
{
throw new Exception($"No command handlers registered for type: {handlerContextType.Name}");
}
}
