/// <summary>
/// Register an intent handler with this <see cref="IntentRouter"/>.
/// </summary>
/// <param name="intentName">Name of the intent as defined in the LUIS application.</param>
/// <param name="confidenceThreshold">Confidence score required to accitvate the handler.</param>
/// <param name="handler">Function to call when routing the intent to this handler.</param>
public void RegisterHandler(string intentName, double confidenceThreshold, IntentHandlerFunc handler)
{
if (string.IsNullOrWhiteSpace(intentName))
{
throw new ArgumentException(nameof(intentName));
}
if ((confidenceThreshold < 0) || (confidenceThreshold > 1))
{
throw new ArgumentOutOfRangeException(nameof(confidenceThreshold));
}
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
if (_handlers.ContainsKey(intentName))
{
throw new InvalidOperationException($"Router already has a handler for intent '{intentName}'");
}
_handlers[intentName] = new HandlerDetails()
{
Threshold = confidenceThreshold,
Exec = handler
};
}
public static void LoadRegistered()
{
_loadedHandlers.Clear();
var settings = ConfigManager.LoadConfig <HandlerRegistry>("handlers");
var handlerDetails = new List <HandlerDetails>();
var assemblyTypes = Assembly.GetExecutingAssembly().GetTypes();
foreach (var handler in settings.Handlers)
{
var name = handler.Name;
Type correctType = null;
try
{
correctType = assemblyTypes.First(t => {
return(t.Name == handler.Type &&
typeof(ITweetHandler).IsAssignableFrom(t) &&
typeof(ITweetHandler).Name != t.Name);
});
}
catch (InvalidOperationException ex)
{
throw new InvalidOperationException($"Could not find tweet handler type for '{handler.Type}'", ex);
}
var data = handler.Data;
HandlerDetails details = new HandlerDetails(name, correctType, data);
handlerDetails.Add(details);
}
foreach (var details in handlerDetails)
{
ITweetHandler createdHandler = Create(details.Type, details.Data);
_loadedHandlers.Add(details.Name, createdHandler);
}
}
