public static ComponentActionDelegate ResolveCommandHandler(MessageContainer data)
{
string component = data.ResolveParameter(nameof(MessageContainer.FixedPropertyNames.Target), 0);
if (string.IsNullOrEmpty(component))
{
Debug.WriteLine("No target component specified. Assuming malicous packet. Exiting request pipeline.");
throw new ArgumentNullException("No target component specified.");
}
ComponentBase instance = GetByName(component);
if (null == instance)
{
data.PushParameters(); //push all parameters back, as this is starting right with the action
component = "Root";
instance = GetByName(component);
}
if (null != instance)
{
string action = data.ResolveParameter(nameof(MessageContainer.FixedPropertyNames.Action), 1).ToUpperInvariant();
ComponentActionDelegate actionHandler;
if (instance.commandHandlers.TryGetValue(action, out actionHandler))
{
return(actionHandler);
}
else
{
Debug.WriteLine($"{component} :: No handler found do for '{action}'");
return(null);
}
}
Debug.WriteLine($"{component} :: Component not found ");
return(null);
}
public static async Task HandleInput(MessageContainer data)
{
string component = data.ResolveParameter(nameof(MessageContainer.FixedPropertyNames.Target), 0);
if (string.IsNullOrEmpty(component))
{
throw new ArgumentNullException("No target component specified.");
}
ComponentBase instance = GetByName(component);
if (null == instance)
{
data.PushParameters(); //push all parameters back, as this is starting right with the action
component = "Root";
instance = GetByName(component);
}
if (null != instance)
{
string action = data.ResolveParameter(nameof(MessageContainer.FixedPropertyNames.Action), 1).ToUpperInvariant();
ComponentActionDelegate actionHandler;
if (instance.commandHandlers.TryGetValue(action, out actionHandler))
{
try
{
await(actionHandler?.Invoke(data)).ConfigureAwait(false);
}
catch (Exception ex)
{
Debug.WriteLine(data.Target, ex.Message + "::" + ex.StackTrace);
data.AddValue("Error", ex.Message);
await HandleOutput(data).ConfigureAwait(false);
}
}
else
{
Debug.WriteLine($"{component} :: No handler found do for '{action}'");
}
}
else
{
Debug.WriteLine($"{component} :: Component not found ");
}
}