public HalBot(HalBot9000Accessors accessors, ILoggerFactory loggerFactory, QnAMaker qnAMaker) { if (loggerFactory == null) { throw new System.ArgumentNullException(nameof(loggerFactory)); } _logger = loggerFactory.CreateLogger <HalBot>(); _logger.LogTrace("Turn start."); _accessors = accessors ?? throw new System.ArgumentNullException(nameof(accessors)); _qnAMaker = qnAMaker; }
/// <summary> /// This method gets called by the runtime. Use this method to add services to the container. /// </summary> /// <param name="services"> /// The <see cref="IServiceCollection" /> specifies the contract for a collection of service /// descriptors. /// </param> /// <seealso cref="IStatePropertyAccessor{T}" /> /// <seealso cref="https://docs.microsoft.com/en-us/aspnet/web-api/overview/advanced/dependency-injection" /> /// <seealso /// cref="https://docs.microsoft.com/en-us/azure/bot-service/bot-service-manage-channels?view=azure-bot-service-4.0" /> public void ConfigureServices(IServiceCollection services) { // We're going to use MemoryStorage here. This is really only suitable for development. // In a future lab, we'll switch to more robust options. IStorage storage = new MemoryStorage(); // declare these here, so we can add them to the services collection outside of the "AddBot" block. // If you try to do "services.AddSingleton" inside of the AddBot block, the HalBot constructor will fail // to get the QnAMaker instance BotConfiguration botConfig = null; QnAMaker qnaMaker = null; // Configures the bot services.AddBot <HalBot>(options => { var secretKey = Configuration.GetSection("botFileSecret")?.Value; var botFilePath = Configuration.GetSection("botFilePath")?.Value; // Loads .bot configuration file and adds a singleton that your Bot can access through dependency injection. botConfig = BotConfiguration.Load(botFilePath ?? @".\HalBot9000.bot", secretKey); // Retrieve current endpoint. var environment = _isProduction ? "production" : "development"; foreach (var serviceConfig in botConfig.Services) { switch (serviceConfig.Type) { case ServiceTypes.Endpoint: if (serviceConfig is EndpointService endpointService) { // initialize the credential provider for the bot endpoint options.CredentialProvider = new SimpleCredentialProvider(endpointService.AppId, endpointService.AppPassword); } break; case ServiceTypes.QnA: if (serviceConfig is QnAMakerService qnaMakerService) { // creates a QnA Maker endpoint and allows it to be injected as a singleton var qnaEndpoint = new QnAMakerEndpoint { Host = qnaMakerService.Hostname, EndpointKey = qnaMakerService.EndpointKey, KnowledgeBaseId = qnaMakerService.KbId }; qnaMaker = new QnAMaker(qnaEndpoint); } break; default: throw new NotImplementedException($"The service type {serviceConfig.Type} is not supported by this bot."); } } // Creates a logger for the application to use. ILogger logger = _loggerFactory.CreateLogger <HalBot>(); // Catches any errors that occur during a conversation turn and logs them. options.OnTurnError = async(context, exception) => { logger.LogError($"Exception caught : {exception}"); await context.SendActivityAsync("Sorry, it looks like something went wrong."); }; }); services.AddSingleton(sp => botConfig ?? throw new InvalidOperationException("The .bot config file could not be loaded.")); services.AddSingleton(sp => qnaMaker ?? throw new InvalidOperationException( "The QnAMaker was never initialized. Missing configuration in the .bot config file.")); // This adds a singleton instance of HalBot9000Accessors to dependency injection. services.AddSingleton(sp => { // Initializes the user state object. This manages the lifecycle of objects scoped to a user. var userState = new UserState(storage); // Creates a property accessor for UserProfile that is scoped to the user var userProfilePropertyAccessor = userState.CreateProperty <UserProfile>(HalBot9000Accessors.UserProfileStateName); var accessors = new HalBot9000Accessors(userState) { UserProfile = userProfilePropertyAccessor }; return(accessors); }); }