I have been trying to use Microsoft Cognitive and AI toolkit with QnAMaker API, in order to create a simplistic chat bot.
While my normal qnaMakerAi chat bot works fine, there is an issue while I was trying to enhance it's feature and include the bot feedback within the response.
I have been following the exact code sample as is referred here.
The issue I'm having is:
Exception: Object reference not set to an instance of an object.
[File of type 'text/plain'].
The debugger is giving error in the code section - (in the file WebApiConfig.cs)
JsonConvert.DefaultSettings = () => new JsonSerializerSettings()
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Formatting = Newtonsoft.Json.Formatting.Indented,
NullValueHandling = NullValueHandling.Ignore,
};
I have also raised a detailed description of the issue in - https://github.com/Microsoft/BotBuilder/issues/4267.
Please check and suggest.
Based on the user comments, here is the code for MessagesController -
using System;
using System.Threading.Tasks;
using System.Web.Http;
using Microsoft.Bot.Connector;
using Microsoft.Bot.Builder.Dialogs;
using System.Web.Http.Description;
using System.Net.Http;
using QnABot.Dialogs;
namespace Microsoft.Bot.Sample.QnABot
{
[BotAuthentication]
public class MessagesController : ApiController
{
/// <summary>
/// POST: api/Messages
/// receive a message from a user and send replies
/// </summary>
/// <param name="activity"></param>
[ResponseType(typeof(void))]
public virtual async Task<HttpResponseMessage> Post([FromBody] Activity activity)
{
// check if activity is of type message
if (activity.GetActivityType() == ActivityTypes.Message)
{
//await Conversation.SendAsync(activity, () => new RootDialog());
await Conversation.SendAsync(activity, () => new QnaDialog());
}
else
{
HandleSystemMessage(activity);
}
return new HttpResponseMessage(System.Net.HttpStatusCode.Accepted);
}
private Activity HandleSystemMessage(Activity message)
{
if (message.Type == ActivityTypes.DeleteUserData)
{
// Implement user deletion here
// If we handle user deletion, return a real message
}
else if (message.Type == ActivityTypes.ConversationUpdate)
{
// Handle conversation state changes, like members being added and removed
// Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
// Not available in all channels
}
else if (message.Type == ActivityTypes.ContactRelationUpdate)
{
// Handle add/remove from contact lists
// Activity.From + Activity.Action represent what happened
}
else if (message.Type == ActivityTypes.Typing)
{
// Handle knowing tha the user is typing
}
else if (message.Type == ActivityTypes.Ping)
{
}
return null;
}
}
}
For QnADialog -
using Microsoft.Bot.Builder.Azure;
using Microsoft.Bot.Builder.CognitiveServices.QnAMaker;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Connector;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
namespace QnABot.Dialogs
{
[Serializable]
public class QnaDialog : QnAMakerDialog
{
public QnaDialog() : base(new QnAMakerService(new QnAMakerAttribute("b372e477-0a2f-4a5a-88d5-3a664d16a4c3", "4ee02ead3xxxxxx", "Sorry, I couldn't find an answer for that", 0.5)))
{
}
protected override async Task RespondFromQnAMakerResultAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result)
{
// answer is a string
var answer = result.Answers.First().Answer;
Activity reply = ((Activity)context.Activity).CreateReply();
string[] qnaAnswerData = answer.Split(';');
int dataSize = qnaAnswerData.Length;
string title = qnaAnswerData[0];
string description = qnaAnswerData[1];
string url = qnaAnswerData[2];
string imageURL = qnaAnswerData[3];
HeroCard card = new HeroCard
{
Title = title,
Subtitle = description,
};
card.Buttons = new List<CardAction>
{
new CardAction(ActionTypes.OpenUrl, "Learn More", value: url)
};
card.Images = new List<CardImage>
{
new CardImage( url = imageURL)
};
reply.Attachments.Add(card.ToAttachment());
await context.PostAsync(reply);
}
protected override async Task DefaultWaitNextMessageAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result)
{
// get the URL
var answer = result.Answers.First().Answer;
string[] qnaAnswerData = answer.Split(';');
string qnaURL = qnaAnswerData[2];
// pass user's question
var userQuestion = (context.Activity as Activity).Text;
context.Call(new FeedbackDialog(qnaURL, userQuestion), ResumeAfterFeedback);
}
private async Task ResumeAfterFeedback(IDialogContext context, IAwaitable<IMessageActivity> result)
{
if (await result != null)
{
await MessageReceivedAsync(context, result);
}
else
{
context.Done<IMessageActivity>(null);
}
}
}
}
For FeedBackDialog -
using Microsoft.ApplicationInsights;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Connector;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
namespace QnABot.Dialogs
{
[Serializable]
public class FeedbackDialog : IDialog<IMessageActivity>
{
private string qnaURL;
private string userQuestion;
public FeedbackDialog(string url, string question)
{
// keep track of data associated with feedback
qnaURL = url;
userQuestion = question;
}
public async Task StartAsync(IDialogContext context)
{
var feedback = ((Activity)context.Activity).CreateReply("Did you find what you need?");
feedback.SuggestedActions = new SuggestedActions()
{
Actions = new List<CardAction>()
{
new CardAction(){ Title = "👍", Type=ActionTypes.PostBack, Value=$"yes-positive-feedback" },
new CardAction(){ Title = "👎", Type=ActionTypes.PostBack, Value=$"no-negative-feedback" }
}
};
await context.PostAsync(feedback);
context.Wait(this.MessageReceivedAsync);
}
public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
{
var userFeedback = await result;
if (userFeedback.Text.Contains("yes-positive-feedback") || userFeedback.Text.Contains("no-negative-feedback"))
{
// create telemetry client to post to Application Insights
TelemetryClient telemetry = new TelemetryClient();
if (userFeedback.Text.Contains("yes-positive-feedback"))
{
// post feedback to App Insights
var properties = new Dictionary<string, string>
{
{"Question", userQuestion },
{"URL", qnaURL },
{"Vote", "Yes" }
// add properties relevant to your bot
};
telemetry.TrackEvent("Yes-Vote", properties);
}
else if (userFeedback.Text.Contains("no-negative-feedback"))
{
// post feedback to App Insights
}
await context.PostAsync("Thanks for your feedback!");
context.Done<IMessageActivity>(null);
}
else
{
// no feedback, return to QnA dialog
context.Done<IMessageActivity>(userFeedback);
}
}
}
}
1st, bad config
Ok, the 1st problem is the fact that you inverted 2 parameters in your QnaDialog declaration:
public QnaDialog() : base(new QnAMakerService(new QnAMakerAttribute("b372e477-0a2f-4a5a-88d5-3a664d16a4c3", "4ee02ead3xxxxxx", "Sorry, I couldn't find an answer for that", 0.5)))
The syntax is: Qn
public QnAMakerAttribute(string subscriptionKey, string knowledgebaseId, ...
Here you inverted your Key and your knowledgebaseId. The Guid should be in 2nd position, not 1st.
Note that I modified your subscription key in the question and reply, you should note share them like that.
Code improvement
The sample that you used seems to be not valid:
in the case there is no match
when your answer is not made of a string with ; separator (like when you type "hi", the reply is "hello"
I added some security to avoid errors in those cases:
protected override async Task RespondFromQnAMakerResultAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result)
{
// answer is a string
var answer = result.Answers.First().Answer;
Activity reply = ((Activity)context.Activity).CreateReply();
var qnaAnswerData = answer.Split(';');
var dataSize = qnaAnswerData.Length;
if (dataSize == 3)
{
var title = qnaAnswerData[0];
var description = qnaAnswerData[1];
var url = qnaAnswerData[2];
var imageUrl = qnaAnswerData[3];
var card = new HeroCard
{
Title = title,
Subtitle = description,
Buttons = new List<CardAction>
{
new CardAction(ActionTypes.OpenUrl, "Learn More", value: url)
},
Images = new List<CardImage>
{
new CardImage(url = imageUrl)
},
};
reply.Attachments.Add(card.ToAttachment());
}
else
{
reply.Text = answer;
}
await context.PostAsync(reply);
}
protected override async Task DefaultWaitNextMessageAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result)
{
if (result.Answers.Count > 0)
{
// get the URL
var answer = result.Answers.First().Answer;
var qnaAnswerData = answer.Split(';');
var dataSize = qnaAnswerData.Length;
if (dataSize == 3)
{
var qnaUrl = qnaAnswerData[2];
// pass user's question
var userQuestion = (context.Activity as Activity).Text;
context.Call(new FeedbackDialog(qnaUrl, userQuestion), ResumeAfterFeedback);
}
else
{
await ResumeAfterFeedback(context, new AwaitableFromItem<IMessageActivity>(null));
}
}
else
{
await ResumeAfterFeedback(context, new AwaitableFromItem<IMessageActivity>(null));
}
}
private async Task ResumeAfterFeedback(IDialogContext context, IAwaitable<IMessageActivity> result)
{
if (await result != null)
{
await MessageReceivedAsync(context, result);
}
else
{
context.Done<IMessageActivity>(null);
}
}
Related
I am trying to send an adaptive card which has 2 options for user to select.
When user submit the response from adaptive card I am receiving :
Newtonsoft.Json.JsonReaderException: Error reading JArray from JsonReader. Current JsonReader item is not an array: StartObject. Path ‘[‘BotAccessors.DialogState’].DialogStack.$values[0].State.options.Prompt.attachments.$values[0].content.body’.
Full code example Link : Manage a complex conversation flow with dialogs
Modification made in HotelDialogs.cs:-
public static async Task<DialogTurnResult> PresentMenuAsync(
WaterfallStepContext stepContext,
CancellationToken cancellationToken)
{
// Greet the guest and ask them to choose an option.
await stepContext.Context.SendActivityAsync(
"Welcome to Contoso Hotel and Resort.",
cancellationToken: cancellationToken);
//return await stepContext.PromptAsync(
// Inputs.Choice,
// new PromptOptions
// {
// Prompt = MessageFactory.Text("How may we serve you today?"),
// RetryPrompt = Lists.WelcomeReprompt,
// Choices = Lists.WelcomeChoices,
// },
// cancellationToken);
var reply = stepContext.Context.Activity.CreateReply();
reply.Attachments = new List<Attachment>
{
new Attachment
{
Content = GetAnswerWithFeedbackSelectorCard("Choose: "),
ContentType = AdaptiveCard.ContentType,
},
};
return await stepContext.PromptAsync(
"testPrompt",
new PromptOptions
{
Prompt = reply,
RetryPrompt = Lists.WelcomeReprompt,
},
cancellationToken).ConfigureAwait(true);
}
Note: ["testPrompt"] I tried with Text Prompt and slightly customizing the TextPrompt to read Activity Value. If Text prompt is not the appropriate prompt for adaptive card response,please let me know is there any other prompt that can be used or some custom prompt will be helpful for this kind of scenario.
Custom Prompt:-
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Bot.Builder;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Schema;
namespace HotelBot
{
public class CustomPrompt : Prompt<string>
{
public CustomPrompt(string dialogId, PromptValidator<string> validator = null)
: base(dialogId, validator)
{
}
protected async override Task OnPromptAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, bool isRetry, CancellationToken cancellationToken = default(CancellationToken))
{
if (turnContext == null)
{
throw new ArgumentNullException(nameof(turnContext));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (isRetry && options.RetryPrompt != null)
{
await turnContext.SendActivityAsync(options.RetryPrompt, cancellationToken).ConfigureAwait(false);
}
else if (options.Prompt != null)
{
await turnContext.SendActivityAsync(options.Prompt, cancellationToken).ConfigureAwait(false);
}
}
protected override Task<PromptRecognizerResult<string>> OnRecognizeAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, CancellationToken cancellationToken = default(CancellationToken))
{
if (turnContext == null)
{
throw new ArgumentNullException(nameof(turnContext));
}
var result = new PromptRecognizerResult<string>();
if (turnContext.Activity.Type == ActivityTypes.Message)
{
var message = turnContext.Activity.AsMessageActivity();
if (!string.IsNullOrEmpty(message.Text))
{
result.Succeeded = true;
result.Value = message.Text;
}
else if (message.Value != null)
{
result.Succeeded = true;
result.Value = message.Value.ToString();
}
}
return Task.FromResult(result);
}
}
}
Card Creation Method:-
private static AdaptiveCard GetAnswerWithFeedbackSelectorCard(string answer)
{
if (answer == null)
{
return null;
}
AdaptiveCard card = new AdaptiveCard();
card.Body = new List<AdaptiveElement>();
var choices = new List<AdaptiveChoice>()
{
new AdaptiveChoice()
{
Title = "Reserve Table",
Value = "1",
},
new AdaptiveChoice()
{
Title = "Order food",
Value = "0",
},
};
var choiceSet = new AdaptiveChoiceSetInput()
{
IsMultiSelect = false,
Choices = choices,
Style = AdaptiveChoiceInputStyle.Expanded,
Value = "1",
Id = "Feedback",
};
var text = new AdaptiveTextBlock()
{
Text = answer,
Wrap = true,
};
card.Body.Add(text);
card.Body.Add(choiceSet);
card.Actions.Add(new AdaptiveSubmitAction() { Title = "Submit" });
return card;
}
Thanks!
After digging for some way forward I came across:
Issue#614
Thus to make adaptive card response work from Dialog, I made a compatible adaptive card prompt by one modification each in Prompt.cs and TextPrompt.cs from Microsoft bot framework.
Prompt.cs => Prompt2.cs ;
TextPrompt.cs => CustomPrompt.cs
Prompt2.cs :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Bot.Builder.Dialogs.Choices;
using Microsoft.Bot.Schema;
using Newtonsoft.Json;
namespace Microsoft.Bot.Builder.Dialogs
{
//Reference: Prompt.cs
/// <summary>
/// Basic configuration options supported by all prompts.
/// </summary>
/// <typeparam name="T">The type of the <see cref="Prompt{T}"/>.</typeparam>
public abstract class Prompt2<T> : Dialog
{
private const string PersistedOptions = "options";
private const string PersistedState = "state";
private readonly PromptValidator<T> _validator;
public Prompt2(string dialogId, PromptValidator<T> validator = null)
: base(dialogId)
{
_validator = validator;
}
public override async Task<DialogTurnResult> BeginDialogAsync(DialogContext dc, object options, CancellationToken cancellationToken = default(CancellationToken))
{
if (dc == null)
{
throw new ArgumentNullException(nameof(dc));
}
if (!(options is PromptOptions))
{
throw new ArgumentOutOfRangeException(nameof(options), "Prompt options are required for Prompt dialogs");
}
// Ensure prompts have input hint set
var opt = (PromptOptions)options;
if (opt.Prompt != null && string.IsNullOrEmpty(opt.Prompt.InputHint))
{
opt.Prompt.InputHint = InputHints.ExpectingInput;
}
if (opt.RetryPrompt != null && string.IsNullOrEmpty(opt.RetryPrompt.InputHint))
{
opt.RetryPrompt.InputHint = InputHints.ExpectingInput;
}
// Initialize prompt state
var state = dc.ActiveDialog.State;
state[PersistedOptions] = opt;
state[PersistedState] = new Dictionary<string, object>();
// Send initial prompt
await OnPromptAsync(dc.Context, (IDictionary<string, object>)state[PersistedState], (PromptOptions)state[PersistedOptions], false, cancellationToken).ConfigureAwait(false);
// Customization starts here for AdaptiveCard Response:
/* Reason for removing the adaptive card attachments after prompting it to user,
* from the stat as there is no implicit support for adaptive card attachments.
* keeping the attachment will cause an exception : Newtonsoft.Json.JsonReaderException: Error reading JArray from JsonReader. Current JsonReader item is not an array: StartObject. Path ‘[‘BotAccessors.DialogState’].DialogStack.$values[0].State.options.Prompt.attachments.$values[0].content.body’.
*/
var option = state[PersistedOptions] as PromptOptions;
option.Prompt.Attachments = null;
/* Customization ends here */
return Dialog.EndOfTurn;
}
public override async Task<DialogTurnResult> ContinueDialogAsync(DialogContext dc, CancellationToken cancellationToken = default(CancellationToken))
{
if (dc == null)
{
throw new ArgumentNullException(nameof(dc));
}
// Don't do anything for non-message activities
if (dc.Context.Activity.Type != ActivityTypes.Message)
{
return Dialog.EndOfTurn;
}
// Perform base recognition
var instance = dc.ActiveDialog;
var state = (IDictionary<string, object>)instance.State[PersistedState];
var options = (PromptOptions)instance.State[PersistedOptions];
var recognized = await OnRecognizeAsync(dc.Context, state, options, cancellationToken).ConfigureAwait(false);
// Validate the return value
var isValid = false;
if (_validator != null)
{
}
else if (recognized.Succeeded)
{
isValid = true;
}
// Return recognized value or re-prompt
if (isValid)
{
return await dc.EndDialogAsync(recognized.Value).ConfigureAwait(false);
}
else
{
if (!dc.Context.Responded)
{
await OnPromptAsync(dc.Context, state, options, true).ConfigureAwait(false);
}
return Dialog.EndOfTurn;
}
}
public override async Task<DialogTurnResult> ResumeDialogAsync(DialogContext dc, DialogReason reason, object result = null, CancellationToken cancellationToken = default(CancellationToken))
{
// Prompts are typically leaf nodes on the stack but the dev is free to push other dialogs
// on top of the stack which will result in the prompt receiving an unexpected call to
// dialogResume() when the pushed on dialog ends.
// To avoid the prompt prematurely ending we need to implement this method and
// simply re-prompt the user.
await RepromptDialogAsync(dc.Context, dc.ActiveDialog).ConfigureAwait(false);
return Dialog.EndOfTurn;
}
public override async Task RepromptDialogAsync(ITurnContext turnContext, DialogInstance instance, CancellationToken cancellationToken = default(CancellationToken))
{
var state = (IDictionary<string, object>)instance.State[PersistedState];
var options = (PromptOptions)instance.State[PersistedOptions];
await OnPromptAsync(turnContext, state, options, false).ConfigureAwait(false);
}
protected abstract Task OnPromptAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, bool isRetry, CancellationToken cancellationToken = default(CancellationToken));
protected abstract Task<PromptRecognizerResult<T>> OnRecognizeAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, CancellationToken cancellationToken = default(CancellationToken));
protected IMessageActivity AppendChoices(IMessageActivity prompt, string channelId, IList<Choice> choices, ListStyle style, ChoiceFactoryOptions options = null, CancellationToken cancellationToken = default(CancellationToken))
{
// Get base prompt text (if any)
var text = prompt != null && !string.IsNullOrEmpty(prompt.Text) ? prompt.Text : string.Empty;
// Create temporary msg
IMessageActivity msg;
switch (style)
{
case ListStyle.Inline:
msg = ChoiceFactory.Inline(choices, text, null, options);
break;
case ListStyle.List:
msg = ChoiceFactory.List(choices, text, null, options);
break;
case ListStyle.SuggestedAction:
msg = ChoiceFactory.SuggestedAction(choices, text);
break;
case ListStyle.None:
msg = Activity.CreateMessageActivity();
msg.Text = text;
break;
default:
msg = ChoiceFactory.ForChannel(channelId, choices, text, null, options);
break;
}
// Update prompt with text and actions
if (prompt != null)
{
// clone the prompt the set in the options (note ActivityEx has Properties so this is the safest mechanism)
prompt = JsonConvert.DeserializeObject<Activity>(JsonConvert.SerializeObject(prompt));
prompt.Text = msg.Text;
if (msg.SuggestedActions != null && msg.SuggestedActions.Actions != null && msg.SuggestedActions.Actions.Count > 0)
{
prompt.SuggestedActions = msg.SuggestedActions;
}
return prompt;
}
else
{
msg.InputHint = InputHints.ExpectingInput;
return msg;
}
}
}
}
CustomPrompt.cs :
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Bot.Builder;
using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Schema;
namespace HotelBot
{
//Reference: TextPrompt.cs
public class CustomPrompt : Prompt2<string>
{
public CustomPrompt(string dialogId, PromptValidator<string> validator = null)
: base(dialogId, validator)
{
}
protected async override Task OnPromptAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, bool isRetry, CancellationToken cancellationToken = default(CancellationToken))
{
if (turnContext == null)
{
throw new ArgumentNullException(nameof(turnContext));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (isRetry && options.RetryPrompt != null)
{
await turnContext.SendActivityAsync(options.RetryPrompt, cancellationToken).ConfigureAwait(false);
}
else if (options.Prompt != null)
{
await turnContext.SendActivityAsync(options.Prompt, cancellationToken).ConfigureAwait(false);
}
}
protected override Task<PromptRecognizerResult<string>> OnRecognizeAsync(ITurnContext turnContext, IDictionary<string, object> state, PromptOptions options, CancellationToken cancellationToken = default(CancellationToken))
{
if (turnContext == null)
{
throw new ArgumentNullException(nameof(turnContext));
}
var result = new PromptRecognizerResult<string>();
if (turnContext.Activity.Type == ActivityTypes.Message)
{
var message = turnContext.Activity.AsMessageActivity();
if (!string.IsNullOrEmpty(message.Text))
{
result.Succeeded = true;
result.Value = message.Text;
}
/*Add handling for Value from adaptive card*/
else if (message.Value != null)
{
result.Succeeded = true;
result.Value = message.Value.ToString();
}
}
return Task.FromResult(result);
}
}
}
Thus workaround until official release of Adaptive Card Prompt for dialog in V4 botframework, is to use this custom prompt.
Usage: (Only for sending adaptive cards which have submit actions)
Referring to the example in the question section:
Add(new CustomPrompt("testPrompt"));
The response for the adaptive card submit action will be received in the next waterfall step : ProcessInputAsync()
var choice = (string)stepContext.Result;
choice will be JSON string of the body posted by the adaptive card.
this is current problem, do we know when we will be able create multi-turn conversation flow using adaptive card in V4 bot framework and wait for Adaptive card's response in stepcontext.result variable instead always sending user to original OnTurn method.
Hit this issue today. This looks like a known issue and there is a workaround available on GitHub
Attachment attachment = new Attachment()
{
ContentType = AdaptiveCard.ContentType,
Content = JsonConvert.DeserializeObject(JsonConvert.SerializeObject(AdpCard)),
};
https://github.com/Microsoft/AdaptiveCards/issues/2148#issuecomment-462708622
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 currently making a chatbot with Microsoft's Bot Framework. In my flow I have a final dialog that lets the user know, that they are participating in the competition. There is also an error-handling method for unknown input. The two methods are seen here:
[Serializable]
public class ConcertCityDialog : AbstractBasicDialog<DialogResult>
{
private static FacebookService FacebookService => new FacebookService(new FacebookClient());
[LuisIntent("ConcertCity")]
public async Task ConcertCityIntent(IDialogContext context, LuisResult result)
{
var fbAccount = await FacebookService.GetAccountAsync(context.Activity.From.Id);
var selectedCityName = result.Entities.FirstOrDefault()?.Entity;
concert_city selectedCity;
using (var concertCityService = new ConcertCityService())
{
selectedCity = concertCityService.FindConcertCity(selectedCityName);
}
if (selectedCity == null)
{
await NoneIntent(context, result);
return;
}
user_interaction latestInteraction;
using (var userService = new MessengerUserService())
{
var user = userService.FindByFacebookIdIncludeInteractions(context.Activity.From.Id);
latestInteraction = user.user_interaction.MaxBy(e => e.created_at);
}
latestInteraction.preferred_city_id = selectedCity.id;
latestInteraction.gif_created = true;
using (var userInteractionService = new UserInteractionService())
{
userInteractionService.UpdateUserInteraction(latestInteraction);
}
var shareIntroReply = context.MakeMessage();
shareIntroReply.Text = "Great choice! You are now participating in the competition. If you dare then pass your message \uD83D\uDE0E";
await context.PostAsync(shareIntroReply);
var reply = await MessageUtility.MakeShareMessageCard(context, fbAccount, latestInteraction, false);
await context.PostAsync(reply);
context.Done(DialogResult.Done);
}
[LuisIntent("")]
[LuisIntent("None")]
public async Task NoneIntent(IDialogContext context, LuisResult result)
{
messenger_user user;
using (var userService = new MessengerUserService())
{
user = userService.FindByFacebookId(context.Activity.From.Id);
}
var phrase = CreateMisunderstoodPhrase(user, result.Query);
using (var misunderstoodPhraseService = new MisunderstoodPhraseService())
{
misunderstoodPhraseService.CreatePhrase(phrase);
}
List<concert_city> concertCities;
using (var concertCityService = new ConcertCityService())
{
concertCities = concertCityService.GetUpcomingConcertCities().ToList();
}
// Prompt city
var reply = context.MakeMessage();
reply.Text = "I'm not sure what you mean \uD83E\uDD14<br/>Which Grøn Koncert would you like to attend?";
reply.SuggestedActions = new SuggestedActions
{
Actions = concertCities.Select(e => MessageUtility.MakeQuickAnswer(e.name)).ToList()
};
await context.PostAsync(reply);
context.Wait(MessageReceived);
}
protected override void OnDeserializedCustom(StreamingContext context)
{
}
}
And here is the AbstractBasicDialog implementation:
[Serializable]
public abstract class AbstractBasicDialog<T> : LuisDialog<T>
{
protected AbstractBasicDialog() : base(new LuisService(new LuisModelAttribute(
ConfigurationManager.AppSettings["LuisAppId"],
ConfigurationManager.AppSettings["LuisAPIKey"],
domain: ConfigurationManager.AppSettings["LuisAPIHostName"])))
{
}
[LuisIntent("Cancel")]
public virtual async Task CancelIntent(IDialogContext context, LuisResult result)
{
var randomQuotes = new List<string>
{
"If you say so, I'll leave you alone for now",
"alright then, I'll leave you alone",
"Okay then, I won't bother you anymore"
};
await context.PostAsync(MessageUtility.RandAnswer(randomQuotes));
context.Done(DialogResult.Cancel);
}
[LuisIntent("Start")]
public virtual async Task StartIntent(IDialogContext context, LuisResult result)
{
context.Done(DialogResult.Restart);
}
[LuisIntent("CustomerSupport")]
public async Task CustomerSupportIntent(IDialogContext context, LuisResult result)
{
using (var userService = new MessengerUserService())
{
var user = userService.FindByFacebookId(context.Activity.From.Id);
if (user != null)
{
user.receiving_support = true;
userService.UpdateUser(user);
}
}
await context.PostAsync("I'll let customer service know, that you want to talk to them. They will get back to you within 24 hours.<br/>If at any time you want to return to me, and start passing a message, just type \"Stop customer support\".");
context.Call(new CustomerSupportDialog(), ResumeAfterCustomerSupport);
}
private async Task ResumeAfterCustomerSupport(IDialogContext context, IAwaitable<DialogResult> result)
{
context.Done(await result);
}
protected misunderstood_phrase CreateMisunderstoodPhrase(messenger_user user, string phrase)
{
return new misunderstood_phrase
{
phrase = phrase,
dialog = GetType().Name,
messenger_user_id = user.id
};
}
[OnDeserialized]
private void OnDeserialized(StreamingContext context)
{
OnDeserializedCustom(context);
}
protected abstract void OnDeserializedCustom(StreamingContext context);
}
The call chain starts at this dialog:
[Serializable]
public class BasicLuisDialog : LuisDialog<DialogResult>
{
private static FacebookService FacebookService => new FacebookService(new FacebookClient());
public BasicLuisDialog() : base(new LuisService(new LuisModelAttribute(
ConfigurationManager.AppSettings["LuisAppId"],
ConfigurationManager.AppSettings["LuisAPIKey"],
domain: ConfigurationManager.AppSettings["LuisAPIHostName"])))
{
}
[LuisIntent("")]
[LuisIntent("None")]
public async Task NoneIntent(IDialogContext context, LuisResult result)
{
var facebookAccount = await FacebookService.GetAccountAsync(context.Activity.From.Id);
RegisterUser(facebookAccount, null, out var user);
var phrase = CreateMisunderstoodPhrase(user, result.Query);
using (var misunderstoodPhraseService = new MisunderstoodPhraseService())
{
misunderstoodPhraseService.CreatePhrase(phrase);
}
var reply = context.MakeMessage();
reply.SuggestedActions = new SuggestedActions
{
Actions = new List<CardAction>
{
new CardAction { Title = "Get started", Type = ActionTypes.ImBack, Value = "Get started" },
new CardAction { Title = "Customer support", Type = ActionTypes.ImBack, Value = "Customer support" }
}
};
var name = string.IsNullOrEmpty(facebookAccount.FirstName) ? "" : $"{facebookAccount.FirstName} ";
reply.Text = $"Hm, I'm not sure what you mean {name} \uD83E\uDD14 Here are some ways you can interact with me:";
await context.PostAsync(reply);
context.Wait(MessageReceived);
}
[LuisIntent("Greeting")]
[LuisIntent("Positive")]
[LuisIntent("Start")]
public async Task GreetingIntent(IDialogContext context, LuisResult result)
{
var rnd = new Random();
var facebookAccount = await FacebookService.GetAccountAsync(context.Activity.From.Id);
// Initial Greeting
var greetings = new List<string>
{
"Well hello there",
"Hi there"
};
if (!string.IsNullOrEmpty(facebookAccount.FirstName))
{
greetings.Add("Hi {0}");
greetings.Add("Hello {0}");
greetings.Add("Welcome {0}");
}
if (facebookAccount.Gender == "male")
greetings.Add("Hey handsome");
else if (facebookAccount.Gender == "female")
greetings.Add("Hi gorgeous");
var randIndex = rnd.Next(greetings.Count);
var greeting = string.Format(greetings[randIndex], facebookAccount.FirstName);
await context.PostAsync(greeting);
await MessageUtility.StartTyping(context, 300);
country country;
using (var countryService = new CountryService())
{
country = countryService.FindCountry(facebookAccount.Locale);
}
var userHasCountry = RegisterUser(facebookAccount, country, out var user);
// If user contry not found prompt for answer
if (!userHasCountry)
{
var countryReply = context.MakeMessage();
countryReply.Text = "You are hard to keep track of - where are you from?";
countryReply.SuggestedActions = new SuggestedActions
{
Actions = new List<CardAction>
{
MessageUtility.MakeQuickAnswer("Denmark"),
MessageUtility.MakeQuickAnswer("Norway"),
MessageUtility.MakeQuickAnswer("Sweden"),
MessageUtility.MakeQuickAnswer("Other")
}
};
await context.PostAsync(countryReply);
context.Call(new CountryDialog(), AfterCountryDialog);
}
else
{
await FunPrompt(context, country);
}
}
private async Task AfterCountryDialog(IDialogContext countryContext, IAwaitable<country> countryAwaitable)
{
var country = await countryAwaitable;
var facebookAccount = await FacebookService.GetAccountAsync(countryContext.Activity.From.Id);
using (var userService = new MessengerUserService())
{
var user = userService.FindByFacebookId(facebookAccount.Id);
user.country = country;
userService.UpdateUser(user);
}
var reply = countryContext.MakeMessage();
reply.Text = "That's cool \uD83D\uDE0E";
await countryContext.PostAsync(reply);
await MessageUtility.StartTyping(countryContext, 350);
await FunPrompt(countryContext, country);
}
private async Task FunPrompt(IDialogContext context, country country)
{
if (country?.name == "norway" && DateTime.Now < new DateTime(2018, 8, 13))
{
var reply = context.MakeMessage();
reply.Text = "Unfortunately the competition isn't open in Norway yet. You can still talk to customer support if you want to";
reply.SuggestedActions = new SuggestedActions
{
Actions = new List<CardAction>
{
MessageUtility.MakeQuickAnswer("Customer support")
}
};
await context.PostAsync(reply);
context.Wait(MessageReceived);
}
else if ((country?.name == "denmark" && DateTime.Now >= new DateTime(2018, 7, 29)) ||
(country?.name == "norway" && DateTime.Now >= new DateTime(2018, 10, 21)))
{
var reply = context.MakeMessage();
reply.Text = "The competition has ended. You can still talk to customer support if you want to";
reply.SuggestedActions = new SuggestedActions
{
Actions = new List<CardAction>
{
MessageUtility.MakeQuickAnswer("Customer support")
}
};
await context.PostAsync(reply);
context.Wait(MessageReceived);
}
else
{
await context.PostAsync("Are you up for some fun?");
context.Call(new IntroductionDialog(), ResumeAfterDialog);
}
}
[LuisIntent("CustomerSupport")]
public async Task CustomerSupportIntent(IDialogContext context, LuisResult result)
{
using (var userService = new MessengerUserService())
{
var user = userService.FindByFacebookId(context.Activity.From.Id);
if (user != null)
{
user.receiving_support = true;
userService.UpdateUser(user);
}
}
await context.PostAsync("I'll let customer support know, that you want to talk to them. They should be messaging you shortly.<br/>You can end your conversation with customer support at any time by typing \"Stop customer support\".");
context.Call(new CustomerSupportDialog(), ResumeAfterDialog);
}
private async Task ResumeAfterDialog(IDialogContext context, IAwaitable<DialogResult> result)
{
var resultState = await result;
if (resultState == DialogResult.Restart)
await GreetingIntent(context, null);
else if (resultState == DialogResult.CustomerSupport)
await ResumeAfterCustomerSupport(context);
else if (resultState == DialogResult.Done || resultState == DialogResult.Cancel)
context.Done(resultState);
else
context.Wait(MessageReceived);
}
private async Task ResumeAfterCustomerSupport(IDialogContext context)
{
using (var userService = new MessengerUserService())
{
var user = userService.FindByFacebookId(context.Activity.From.Id);
if (user != null)
{
user.receiving_support = false;
userService.UpdateUser(user);
}
}
await context.PostAsync("I hope you got the help you needed. Would you like to pass a message to a friend?");
context.Call(new IntroductionDialog(), ResumeAfterDialog);
}
private bool RegisterUser(FacebookAccount fbAccount, country country, out messenger_user user)
{
if (string.IsNullOrEmpty(fbAccount?.Id))
{
user = null;
return false;
}
using (var userService = new MessengerUserService())
{
user = userService.FindByFacebookId(fbAccount.Id);
if (user != null)
return user.country != null;
user = new messenger_user
{
id = fbAccount.Id,
country = country
};
userService.CreateUser(user);
return user.country != null;
}
}
protected misunderstood_phrase CreateMisunderstoodPhrase(messenger_user user, string phrase)
{
return new misunderstood_phrase
{
phrase = phrase,
dialog = GetType().Name,
messenger_user_id = user.id
};
}
}
This works most of the time. The user is told that their registration was a success and the flow exits with the context.Done() call. Sometimes however the chatbot doesn't register the dialog as being exited, as seen here:
As you can see the chatbot is still in the same Dialog even though I have called the Done() method. This is a general problem in my chatbot, as it happens sometimes in all my dialogs.
Do you have any input as to what could be wrong?
EDIT:
When debugging this I've added breakpoints every time it calls context.Call. When my issue arises it stops hitting these breakpoints afterwards. Could this be a side-effect of some DI or something? This is my DI code:
Conversation.UpdateContainer(builder =>
{
builder.RegisterModule(new DialogModule());
builder.RegisterModule(new ReflectionSurrogateModule());
builder.RegisterModule(new DialogModule_MakeRoot());
builder.RegisterModule(new AzureModule(Assembly.GetExecutingAssembly()));
var store = new TableBotDataStore(ConfigurationManager.ConnectionStrings["StorageConnectionString"].ConnectionString);
builder.Register(c => store)
.Keyed<IBotDataStore<BotData>>(AzureModule.Key_DataStore)
.AsSelf()
.SingleInstance();
builder.Register(c => new CachingBotDataStore(store,
CachingBotDataStoreConsistencyPolicy
.ETagBasedConsistency))
.As<IBotDataStore<BotData>>()
.AsSelf()
.InstancePerLifetimeScope();
builder.RegisterType<BasicLuisDialog>().As<LuisDialog<DialogResult>>().InstancePerDependency();
});
I think I finally found the problem. In my code I had implemented a helper method in a static class that would send a typing response and wait a certain amount of time. Seeing as the context was passed into this static method it seems that this was causing some issues.
After changing the method to an extension method of the LuisDialog I no longer have this issue.
I would appreciate if anyone can expand on why this might have been a problem.
EDIT: The method in question:
public static async Task StartTyping(IDialogContext context, int sleep)
{
var typingMsg = context.MakeMessage();
typingMsg.Type = ActivityTypes.Typing;
await context.PostAsync(typingMsg);
await Task.Delay(sleep);
}
I faced a very similar issue and while moving the typing sending into a base class from a static helper class as Frederik did help to highly reduce the number of times the problem occured, the final solution was this: https://github.com/Microsoft/BotBuilder/issues/4477
In short, I had to downgrade the bot-related NuGet packages (Microsoft.Bot.Builder, Microsoft.Bot.Builder.History, Microsoft.Bot.Connector) to 3.13.1 and the issue disappeared.
since in [LuisIntent("ConcertCity")] you are using context.Done() so the current dialog gets exit from the stack. This is why the next message is being handled by the previous dialog or the message controller where the 'None' intent is being called and you are getting this response
reply.Text = "I'm not sure what you mean \uD83E\uDD14<br/>Which Grøn Koncert would you like to attend?";
You should not do context.Done() every places, this should only be called when you have to go to the previous dialog on the stack.
The problem is that when the button is pressed in the telegram, no activity comes to the bot controller. Or I do not catch them right. + After clicking bot displays the message "sorry, my bot code is having an issue".
A standard class controller for getting activities on the Microsoft Bot Framework.
[BotAuthentication]
public class MessagesController : ApiController
{
[ResponseType(typeof(void))]
public virtual async Task<HttpResponseMessage> Post([FromBody] Activity activity)
{
if (activity != null && activity.GetActivityType() == ActivityTypes.Message)
{
await Conversation.SendAsync(activity, () => new finder_worker());
}
else
{
HandleSystemMessage(activity);
}
return new HttpResponseMessage(System.Net.HttpStatusCode.Accepted);
}
private Activity HandleSystemMessage(Activity message)
{
if (message.Type == ActivityTypes.DeleteUserData)
{
// Implement user deletion here
// If we handle user deletion, return a real message
}
else if (message.Type == ActivityTypes.ConversationUpdate)
{
// Handle conversation state changes, like members being added and removed
// Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
// Not available in all channels
}
else if (message.Type == ActivityTypes.ContactRelationUpdate)
{
// Handle add/remove from contact lists
// Activity.From + Activity.Action represent what happened
}
else if (message.Type == ActivityTypes.Typing)
{
// Handle knowing tha the user is typing
}
else if (message.Type == ActivityTypes.Ping)
{
//message.p
}
return null;
}
}
This is the class that I wrote as an activity handler. It uses HeroCard to create buttons.
[Serializable]
public class finder_worker : IDialog<object>
{
private const string mark = "sad";
private const string st_message = "start";
private const string empty_message = "";
public async Task StartAsync(IDialogContext context)
{
//тут их отлавливает
context.Wait(MessageReceivedAsync);
}
public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
{
try
{
var message = await argument;
var message_to_send = context.MakeMessage();
workers.json_worker m = new workers.json_worker(message.ChannelData.ToString());
await context.PostAsync($"сообщение: {m.message_text}");
switch (m.message_text)
{
case st_message:
await context.PostAsync($"инициация знакомства");
break;
case empty_message:
await context.PostAsync($"пустое сообщение");
break;
case mark:
message_to_send.Attachments.Add(create_button());
await context.PostAsync(message_to_send);
await context.PostAsync($"тестовое сообщение");
//create_button();
break;
default:
await context.PostAsync($"прочее сообщение");
break;
}
context.Wait(MessageReceivedAsync);
}
catch(SqlException e)
{
await context.PostAsync($"упс... что то не получилось записать на сервер{e.ToString()}");
}
}
public Attachment create_button()
{
var card = new HeroCard("Some Text");
card.Buttons = new List<CardAction>()
{
new CardAction()
{
Title = "button1",
Type=ActionTypes.MessageBack,
Value="button1"
},
new CardAction()
{
Title = "button2",
Type=ActionTypes.MessageBack,
Value="button2"
}
};
Attachment cardAttachment = card.ToAttachment();
return cardAttachment;
}
}
As a test, I send the bot sad and wait for the initiation of the buttons. This part goes well. But after clicking the bot does not receive any messages or other activities. I expect to receive a message or other activity that can be processed with Microsoft Bot Framework tools.
Tried:
specify the type of CardAction as: MessageBack, PostBack, ImBack
send buttons through activity.CreateReply
Thank you!
ActionTypes.MessageBack is not a valid card action type for telegram (it is for MS Teams). Please try PostBack or ImBack
public Attachment create_button()
{
var card = new HeroCard("Some Text");
card.Buttons = new List<CardAction>()
{
new CardAction()
{
Title = "button1",
Type=ActionTypes.ImBack,
Value="button1"
},
new CardAction()
{
Title = "button2",
Type=ActionTypes.PostBack,
Value="button2"
}
};
Attachment cardAttachment = card.ToAttachment();
return cardAttachment;
}
I can't seem to get my code work, although I tried several different approaches. Here is my preferred code snippet:
var client = await ApiClientProvider.GetApiClient();
var freeToPlayChampions = await client.GetChampionsAsync(true, Region);
var championsData = freeToPlayChampions.Select(x =>
client.GetStaticChampionByIdAsync(
(int)x.Id,
platformId: Region));
ConsoleTable.From(await Task.WhenAll(championsData)).Write();
When debugging I see that the code hangs on await Task.WhenAll(championsData). So i tried to make the code more easy:
var client = await ApiClientProvider.GetApiClient();
var freeToPlayChampions = await client.GetChampionsAsync(true, Region);
var table = new ConsoleTable();
foreach(var freeToPlayChampion in freeToPlayChampions)
{
var championsData = client.GetStaticChampionByIdAsync(
(int)freeToPlayChampion.Id,
platformId: Region);
table.AddRow(await championsData);
}
table.Write();
Unfortunately this hangs, as well. Again on the same code part, e.g. await championsData.
How can this 'easy' usage of async/await lead to an deadlock? Thanks in advance for help!
EDIT:
Here is the whole class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ConsoleTables;
using Mono.Options;
using RiotNet.Models;
using RiotShell.Properties;
namespace RiotShell
{
public class FreeToPlay : IShellCommand
{
public IEnumerable<string> Names { get; }
public OptionSet Options { get; }
public bool ShowHelp { get; private set; }
public string Region { get; private set; }
public FreeToPlay()
{
Names = new List<string>
{
"freetoplay",
"ftp"
};
Options = new OptionSet
{
{ "r|region=" , "The region to execute against", x => Region = x},
{ "h|help|?" , "Show help", x => ShowHelp = true }
};
}
public async Task Execute(IEnumerable<string> args)
{
if (ShowHelp)
{
Options.WriteOptionDescriptions(Console.Out);
return;
}
if (args.Any())
{
throw new Exception(Resources.TooManyArgumentsProvided);
}
if (Region == null)
{
throw new Exception(string.Format(Resources.RequiredOptionNotFound, "region"));
}
if (!PlatformId.All.Contains(Region))
{
throw new Exception(string.Format(Resources.InvalidRegion, Region));
}
var client = await ApiClientProvider.GetApiClient();
var freeToPlayChampions = await client.GetChampionsAsync(true, Region);
var championsData = freeToPlayChampions.Select(x =>
client.GetStaticChampionByIdAsync(
(int)x.Id,
platformId: Region));
ConsoleTable.From(await Task.WhenAll(championsData)).Write();
}
}
}
And here is the caller code, my main method:
using System;
using System.Threading.Tasks;
using RiotShell.Properties;
namespace RiotShell
{
public class Program
{
public static async Task Main()
{
while (true)
{
Console.Write(Resources.RiotShellLineString);
var input = Console.ReadLine();
try
{
var parsedArgs = InputParser.Parse(input);
(var command, var commandArgs) = ArgsToIShellCommandCaster.GetCommand(parsedArgs);
await command.Execute(commandArgs);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
}
Since it was wished, here the code for the ApiProvider:
using RiotNet;
using System.Threading.Tasks;
namespace RiotShell
{
public class ApiClientProvider
{
private static IRiotClient _client;
public static async Task<IRiotClient> GetApiClient()
{
if (_client != null)
{
_client.Settings.ApiKey = await KeyService.GetKey();
return _client;
}
_client = new RiotClient(new RiotClientSettings
{
ApiKey = await KeyService.GetKey()
});
return _client;
}
}
}