I'm creating a bot using Bot Framework in C#
I have this piece of code :
var faq = await result;
if (faq == "Faq with menu")
{
await context.PostAsync("Under construction");
}
else if (faq == "Faq with dialog")
{
context.Call(new FaqDialog(), this.ResumeAfterOptionDialog);
}
Faq with dialog I have connected with a dialog class.
I want to connect Faq with menu with my client in Api.ai. Do you have any idea how to do it?
What I would do is to create an enum with the Faq values:
Public enum Faq{
Undefined,
Menu,
Dialog
}
Then create a method that will call Api.ai with the user message and map the intent response to the enum:
public T MatchAiIntent<T>(string message) where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enum type!");
}
T result = default(T);
try
{
var response = apiAi.TextRequest(message);
var intentName = response?.Result?.Metadata?.IntentName;
if (intentName == null)
{
return result;
}
Enum.TryParse<T>(intentName, true, out result);
return result;
}
catch (Exception exception)
{
//logit
throw;
}
}
Then you can use it in your code:
var response = MatchAiIntent(faq);
if (response == Faq.Menu)
{
await context.PostAsync("Under construction");
}
[UPDATE]
CONNECTING TO Dialogflow (previously known as API.AI) FROM C#
Follow these steps (working example in C#)
After you create a Dialogflow agent go to the agent's settings --> General --> click on the Service Account link
You will be sent to to google cloud platform where you can create a service account
After you create a service account, there will be an option to create a KEY, create it and download the (JSON) format of it
This key will be used to connect from your C# project to the Dialogflow agent
Install Google.Cloud.Dialogflow.V2 package in your project
Create for example a Dialogflow manager class (check below for an example)
public class DialogflowManager {
private string _userID;
private string _webRootPath;
private string _contentRootPath;
private string _projectId;
private SessionsClient _sessionsClient;
private SessionName _sessionName;
public DialogflowManager(string userID, string webRootPath, string contentRootPath, string projectId) {
_userID = userID;
_webRootPath = webRootPath;
_contentRootPath = contentRootPath;
_projectId = projectId;
SetEnvironmentVariable();
}
private void SetEnvironmentVariable() {
try {
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", _contentRootPath + "\\Keys\\{THE_DOWNLOADED_JSON_FILE_HERE}.json");
} catch (ArgumentNullException) {
throw;
} catch (ArgumentException) {
throw;
} catch (SecurityException) {
throw;
}
}
private async Task CreateSession() {
// Create client
_sessionsClient = await SessionsClient.CreateAsync();
// Initialize request argument(s)
_sessionName = new SessionName(_projectId, _userID);
}
public async Task < QueryResult > CheckIntent(string userInput, string LanguageCode = "en") {
await CreateSession();
QueryInput queryInput = new QueryInput();
var queryText = new TextInput();
queryText.Text = userInput;
queryText.LanguageCode = LanguageCode;
queryInput.Text = queryText;
// Make the request
DetectIntentResponse response = await _sessionsClient.DetectIntentAsync(_sessionName, queryInput);
return response.QueryResult;
}
}
And then this can be called like this for example to get detect Intents
DialogflowManager dialogflow = new DialogflowManager("{INSERT_USER_ID}",
_hostingEnvironment.WebRootPath,
_hostingEnvironment.ContentRootPath,
"{INSERT_AGENT_ID");
var dialogflowQueryResult = await dialogflow.CheckIntent("{INSERT_USER_INPUT}");
Related
I am trying to register an iOS device to Azure Notification Hubs
Registration works - no error is thrown.
calling await _hub.GetAllRegistrationsAsync(0) gets 0 records
sending a test message returns Message was successfully sent, but there were no matching targets.
Implementation:
I have a AzurePushNotificationsService class, which i use to register the device.
public class AzurePushNotificationsService
{
private readonly NotificationHubClient _hub;
public AzurePushNotificationsService()
{
_hub = NotificationHubClient.CreateClientFromConnectionString("Endpoint=[endpoint]/;SharedAccessKeyName=DefaultFullSharedAccessSignature;SharedAccessKey=[access_key]", "push_app_dev");
}
private async Task<string> RegisterDevice(string token)
{
string newRegistrationId = null;
if (!string.IsNullOrWhiteSpace(token))
{
var registrations = await _hub.GetRegistrationsByChannelAsync(token, 100);
foreach (var registration in registrations)
{
if (newRegistrationId == null)
{
newRegistrationId = registration.RegistrationId;
}
else
{
await _hub.DeleteRegistrationAsync(registration);
}
}
}
return newRegistrationId ?? await _hub.CreateRegistrationIdAsync();
}
public async Task<string> CreateOrUpdateRegistration(string token, DeviceType deviceType, string registrationId = null)
{
if (string.IsNullOrWhiteSpace(registrationId))
registrationId = await RegisterDevice(token);
RegistrationDescription registration = null;
switch (deviceType)
{
case DeviceType.Apple:
registration = new AppleRegistrationDescription(token);
break;
}
registration.RegistrationId = registrationId;
var registrationStale = false;
try
{
// throws no error.
registration = await _hub.CreateOrUpdateRegistrationAsync(registration);
}
catch (MessagingException e)
{
var webEx = e.InnerException as WebException;
if (webEx != null && webEx.Status == WebExceptionStatus.ProtocolError)
{
var response = (HttpWebResponse)webEx.Response;
if (response.StatusCode == HttpStatusCode.Gone)
{
registrationStale = true;
}
}
}
// if the registration is stale and/or removed then it needs to be re-created with a new registrationId
if (registrationStale)
registrationId = await CreateOrUpdateRegistration(contactId, token, deviceType);
return registrationId;
}
}
I register a device:
string token = "9da952de6877b23738f5e744b6149750505417afc84d31290044643fa1493d2c".ToUpper();
var service = new AzurePushNotificationsService();
await service.CreateOrUpdateRegistration(token, DeviceType.Apple, null);
I send a Test message, and i get the message:
Message was successfully sent, but there were no matching targets.
Is it something that i am missing?
I have implement a bot using Microsoft Bot builder SDK v-4 (pre-release). To manage the conversation flow I have used two simple dialogs-
GreetingDialog - DialogBegin: To greet the user first time
public Task DialogBegin(DialogContext dc, IDictionary<string, object> dialogArgs = null)
{
var state = dc.Context.GetConversationState<EchoState>();
string greetMessage = string.Format("Hi, I am {0}.", _botName);
dc.Context.SendActivity(greetMessage);
IList<CardAction> suggestedActions = new List<CardAction>
{
//some card action suggestions
};
var activity = MessageFactory.SuggestedActions(suggestedActions, text: "Please select the area of conversation.");
dc.Context.SendActivity(activity);
dc.End();
return Task.CompletedTask;
}
ConversationDialog - DialogBegin: To continue the subsequent conversation after the user has been greeted
public Task DialogBegin(DialogContext dc, IDictionary<string, object> dialogArgs = null)
{
string activity = "test";
dc.Context.SendActivity(activity);
dc.Continue();
return Task.CompletedTask;
}
I am calling the GreetingDialog in the ConversationUpdate event and the ConversationDialog in the subsequent message received event, within the OnTurn method in my Bot class.
OnTurn event in my Bot class:
public async Task OnTurn(ITurnContext context)
{
var state = context.GetConversationState<EchoState>();
var dialogCtx = _dialogs.CreateContext(context, state);
if (context.Activity.Type == ActivityTypes.ConversationUpdate)
{
//Greet user first time
if (context.Activity.MembersAdded[0].Id == "default-user")
{
return;
}
if (!context.Responded)
{
var args = new Dictionary<string, object>
{
["greetingArgs"] = context.Activity.Text
};
await dialogCtx.Begin("greetingDialog", args);
}
}
else if (context.Activity.Type == ActivityTypes.Message)
{
await dialogCtx.Continue(); //this line is supposed to execute Begin the active dialog again??
//if (!context.Responded)
if(dialogCtx.ActiveDialog == null || !dialogCtx.Context.Responded)
{
var args = new Dictionary<string, object>
{
["conversationArgs"] = context.Activity.Text
};
await dialogCtx.Begin("conversationDialog", args);
}
}
}
Using the above code, I get redirected to ConversationDialog but it only happens through await dialogCtx.Begin("conversationDialog", args);. Isn't it supposed to redirect to DialogBegin of the Active dialog when I do await dialogCtx.Continue();? I can see the Active dialog is 'conversationDialog' and the debugger steps over through await dialogCtx.Continue();. Any help with this please?
I think I figured it out. We can implement the IDialogContinue interface for our Dialog class like this-
public class QnADialog : IDialog, IDialogContinue
{
public Task DialogBegin(DialogContext dc, IDictionary<string, object> dialogArgs = null)
{
string activity = "test";
dc.Context.SendActivity(activity);
//dc.Continue();
return Task.CompletedTask;
}
public Task DialogContinue(DialogContext dc)
{
dc.Context.SendActivity("dc continue");
dc.Context.Responded = true;
return Task.CompletedTask;
}
}
Then we can use the DialogContinue method to handle the DialogContext.Continue() from the calling code.
I'm trying to create a UWP service app on the Raspberry Pi3 which provides the access to the on board UART. I'm facing an issue about the AppConnection Request/response.
this is the service method that handles the incoming requests from client apps
internal class Inbound
{
public static async void OnRequestReceived(AppServiceConnection sender, AppServiceRequestReceivedEventArgs args)
{
var messageDeferral = args.GetDeferral();
var response = new ValueSet();
bool success = false;
var msg = args.Request.Message.Keys;
if (args.Request.Message.TryGetValue(ServiceApiRequests.Keys.Command, out object command))
{
try
{
switch (command)
{
case ServiceApiRequests.CommandValues.UartWrite:
if (args.Request.Message.TryGetValue(ServiceApiRequests.Keys.UartTxBuffer, out object txBuffer))
{
string rxBuff = "";
success = await Pi3.Peripherals.Uart.GerInstance(57600).Write((string)txBuffer);
if (success)
{
Debug.WriteLine("Tx: " + (string)txBuffer);
if (args.Request.Message.TryGetValue(ServiceApiRequests.Keys.ReadUartResponse, out object getResponse))
{
if ((string)getResponse == ServiceApiRequests.ReadUartResponse.Yes)
{
rxBuff = await Pi3.Peripherals.Uart.GerInstance(57600).Read();
Debug.WriteLine("Rx: " + rxBuff);
}
}
}
response.Add(ServiceApiRequests.Keys.UartRxBuffer, rxBuff);
}
break;
}
}
catch (Exception ex)
{
success = false;
}
}
response.Add(new KeyValuePair<string, object>(ServiceApiRequests.Keys.Result, success ? ServiceApiRequests.ResultValues.Ok : ServiceApiRequests.ResultValues.Ko));
var result = await args.Request.SendResponseAsync(response);
if (result == AppServiceResponseStatus.Failure)
{
Debug.WriteLine("Failed to send the response");
}
messageDeferral.Complete();
}
}
As you can figure out, the Uart class is get using the Singleton pattern using the method Pi3.Peripherals.Uart.GerInstance(57600).
Following the code i using for send the request from the client app.
public static class Uart
{
public static IAsyncOperation<string> SendCommand(this AppServiceConnection DriverControllerConnection, string txBuffer, string awaitResponse = ServiceApiRequests.ReadUartResponse.Yes)
{
return _SendCommand(DriverControllerConnection, txBuffer, awaitResponse).AsAsyncOperation();
}
private static async Task<string> _SendCommand(AppServiceConnection DriverControllerConnection, string txBuffer, string awaitResponse)
{
AppServiceResponse response = null;
string response_str = "";
try
{
if (DriverControllerConnection != null)
{
response = await DriverControllerConnection.SendMessageAsync(new ServiceApiRequests.UartWrite().GetCommand(txBuffer, awaitResponse));
if (response.Status == AppServiceResponseStatus.Success)
{
if (response.Message.TryGetValue(ServiceApiRequests.Keys.Result, out object result))
{
if ((string)result == ServiceApiRequests.ResultValues.Ok && awaitResponse == ServiceApiRequests.ReadUartResponse.Yes)
{
response_str = response.Message[ServiceApiRequests.Keys.UartRxBuffer] as string;
}
}
}
}
}
catch (Exception ex)
{
// TODO: log
}
return response_str;
}
}
The system works well just for a while, until i have response.Status == AppServiceResponseStatus.Success , then the result of the request changes and it becomes AppServiceResponseStatus.Failure. This way the program counter never steps into the condition if (response.Status == AppServiceResponseStatus.Success).
Any idea about the cause?
Thank you so much for the help.
EDIT
Follow the suggestions, i added an handler for the ServiceClosed event. This is the main class.
public sealed class DriverListener : IBackgroundTask
{
private BackgroundTaskDeferral backgroundTaskDeferral;
private AppServiceConnection appServiceConnection;
public void Run(IBackgroundTaskInstance taskInstance)
{
backgroundTaskDeferral = taskInstance.GetDeferral();
// taskInstance.Canceled += OnTaskCanceled;
var triggerDetails = taskInstance.TriggerDetails as AppServiceTriggerDetails;
appServiceConnection = triggerDetails.AppServiceConnection;
appServiceConnection.RequestReceived += Inbound.OnRequestReceived;
appServiceConnection.ServiceClosed += OnTaskCanceled;
}
private void OnTaskCanceled(AppServiceConnection sender, AppServiceClosedEventArgs reason)
{
if (this.backgroundTaskDeferral != null)
{
Debug.WriteLine("ServiceClosed");
// Complete the service deferral.
this.backgroundTaskDeferral.Complete();
}
}
}
Placing a breakpoint in this function, i see that it was never triggered.
The app connection is opened using the singleton pattern, and putted in a dll that i use in the client app
public static AppServiceConnection GetDriverConnectionInstance()
{
if (_DriverConnectionInstance == null)
{
try
{
_DriverConnectionInstance = OpenDriverConnection().AsTask().GetAwaiter().GetResult();
}
catch
{
}
}
return _DriverConnectionInstance;
}
I also add a Request to the service that toggles a led, and i noticed that the led status changes but the response from the app service is still "Failure" and the message is null.
The AppService has a default lifetime of 25sec, unless it is being requested by the foreground experience. When the service shuts down the connection, your client process will receive the ServiceClosed event, so you know you will need to reopen the connection the next time you want to send a request.
I'm new to Xamarin and I'm trying to create a cross-platform app where users can login using a JSON API call. A token is then returned on a successful login attempt which I can use in other API's to display user data.
It works when I use the same code in a console application, but when I run it in Xamarin the code after await client.GetAsync(url) is never reached and after a while the application breaks and I get an unknown error. Am I experiencing a deadlock?
private async void loginButton_Click(object sender, EventArgs e)
{
var login = await loginAPI(LoginPage.nameEntry.Text, LoginPage.passEntry.Text);
if (login.state == "success")
{
...
}
else
{
...
}
}
public static async Task<LoginData> loginAPI(String username, String password)
{
try
{
using (var client = new HttpClient())
{
var loginUrl = new Uri("https://my-api/login?username=" + username + "&password=" + password);
var result = await client.GetAsync(loginUrl);
return JsonConvert.DeserializeObject<LoginData>(await result.Content.ReadAsStringAsync());
}
}
catch (Exception e)
{
return null;
}
}
public class LoginData
{
[JsonProperty("state")]
public String state { get; set; }
[JsonProperty("token")]
public String token { get; set; }
}
I making an app using xamarin and azure mobile service. I am attempting to add offline sync capabilities but I am stuck. I have a service which looks like this
class AzureService
{
public MobileServiceClient Client;
AuthHandler authHandler;
IMobileServiceTable<Subscription> subscriptionTable;
IMobileServiceSyncTable<ShopItem> shopItemTable;
IMobileServiceSyncTable<ContraceptionCenter> contraceptionCenterTable;
IMobileServiceTable<Member> memberTable;
const string offlineDbPath = #"localstore.db";
static AzureService defaultInstance = new AzureService();
private AzureService()
{
this.authHandler = new AuthHandler();
this.Client = new MobileServiceClient(Constants.ApplicationURL, authHandler);
if (!string.IsNullOrWhiteSpace(Settings.AuthToken) && !string.IsNullOrWhiteSpace(Settings.UserId))
{
Client.CurrentUser = new MobileServiceUser(Settings.UserId);
Client.CurrentUser.MobileServiceAuthenticationToken = Settings.AuthToken;
}
authHandler.Client = Client;
//local sync table definitions
//var path = "syncstore.db";
//path = Path.Combine(MobileServiceClient.DefaultDatabasePath, path);
//setup our local sqlite store and intialize our table
var store = new MobileServiceSQLiteStore(offlineDbPath);
//Define sync table
store.DefineTable<ShopItem>();
store.DefineTable<ContraceptionCenter>();
//Initialize file sync context
//Client.InitializeFileSyncContext(new ShopItemFileSyncHandler(this), store);
//Initialize SyncContext
this.Client.SyncContext.InitializeAsync(store);
//Tables
contraceptionCenterTable = Client.GetSyncTable<ContraceptionCenter>();
subscriptionTable = Client.GetTable<Subscription>();
shopItemTable = Client.GetSyncTable<ShopItem>();
memberTable = Client.GetTable<Member>();
}
public static AzureService defaultManager
{
get { return defaultInstance; }
set { defaultInstance = value; }
}
public MobileServiceClient CurrentClient
{
get { return Client; }
}
public async Task<IEnumerable<ContraceptionCenter>> GetContraceptionCenters()
{
try
{
await this.SyncContraceptionCenters();
return await contraceptionCenterTable.ToEnumerableAsync();
}
catch (MobileServiceInvalidOperationException msioe)
{
Debug.WriteLine(#"Invalid sync operation: {0}", msioe.Message);
}
catch (Exception e)
{
Debug.WriteLine(#"Sync error: {0}", e.Message);
}
return null;
}
public async Task SyncContraceptionCenters()
{
ReadOnlyCollection<MobileServiceTableOperationError> syncErrors = null;
try
{
//await this.Client.SyncContext.PushAsync();
await this.contraceptionCenterTable.PullAsync(
//The first parameter is a query name that is used internally by the client SDK to implement incremental sync.
//Use a different query name for each unique query in your program
"allContraceptionCenters",
this.contraceptionCenterTable.CreateQuery());
}
catch (MobileServicePushFailedException exc)
{
if (exc.PushResult != null)
{
syncErrors = exc.PushResult.Errors;
}
}
// Simple error/conflict handling. A real application would handle the various errors like network conditions,
// server conflicts and others via the IMobileServiceSyncHandler.
if (syncErrors != null)
{
foreach (var error in syncErrors)
{
if (error.OperationKind == MobileServiceTableOperationKind.Update && error.Result != null)
{
//Update failed, reverting to server's copy.
await error.CancelAndUpdateItemAsync(error.Result);
}
else
{
// Discard local change.
await error.CancelAndDiscardItemAsync();
}
Debug.WriteLine(#"Error executing sync operation. Item: {0} ({1}). Operation discarded.", error.TableName, error.Item["id"]);
}
}
}
I am getting this error:
System.NullReferenceException: Object reference not set to an instance of an object. When the SyncContraceptionCenters() is run. As far as I can tell I reproduced the coffeeItems example in my service But I am stuck.
I think I found the solution. The issue was the way the tables were being synced.
by calling SyncContraceptionCenters() and SyncShop() at the same time shopItemtable.PullAsync and contraceptionTable.PullAsync were happening at the same time. Which is bad apparently bad. So but putting them in the same method and awaiting them they run separately and they work as expected.