Uri IQnAService.BuildRequest(string queryText, out QnAMakerRequestBody postBody, out string authKey)
{
var knowledgebaseId = this.qnaInfo.KnowledgebaseId;
Uri UriBase;
// Check if the hostname was passed
if (string.IsNullOrEmpty(this.qnaInfo.EndpointHostName))
{
// No hostname passed, add the V2 URI
UriBase = UriBaseV2;
// V2 subacription Key
authKey = this.qnaInfo.AuthKey.Trim();
}
else
{
// Hostname was passed, build the V4 endpoint URI
string hostName = this.qnaInfo.EndpointHostName.ToLower();
// Remove https
if (hostName.Contains("https://"))
{
hostName = hostName.Split('/')[2];
}
// Remove qnamaker
if (hostName.Contains("qnamaker"))
{
hostName = hostName.Split('/')[0];
}
// Trim any trailing /
hostName = hostName.TrimEnd('/');
// Create the V4 Uri based on the hostname
UriBase = new Uri("https://" + hostName + "/qnamaker/knowledgebases");
// Check if key has endpoint in it
if (this.qnaInfo.AuthKey.ToLower().Contains("endpointkey"))
{
authKey = this.qnaInfo.AuthKey.Trim(' ');
}
else
{
authKey = "EndpointKey " + this.qnaInfo.AuthKey.Trim(' ');
}
}
var builder = new UriBuilder($"{UriBase}/{knowledgebaseId}/generateanswer");
postBody = new QnAMakerRequestBody {
question = queryText, top = this.qnaInfo.Top
};
return(builder.Uri);
}
async Task <QnAMakerResults> IQnAService.QueryServiceAsync(Uri uri, QnAMakerRequestBody postBody, string authKey)
{
string json = string.Empty;
using (HttpClient client = new HttpClient())
{
//Add the key header according to V2 or V4 format
if (authKey.ToLower().Contains("endpointkey"))
{
client.DefaultRequestHeaders.Add("Authorization", authKey);
}
else
{
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", authKey);
}
var response = await client.PostAsync(uri, new StringContent(JsonConvert.SerializeObject(postBody), Encoding.UTF8, "application/json"));
if (response != null && response.Content != null)
{
json = await response.Content.ReadAsStringAsync();
}
}
try
{
var qnaMakerResults = JsonConvert.DeserializeObject <QnAMakerResults>(json);
//Adding internal service cfg reference [used when checking configured threshold to provide an answer]
qnaMakerResults.ServiceCfg = this.qnaInfo;
var filteredQnAResults = new List <QnAMakerResult>();
foreach (var qnaMakerResult in qnaMakerResults.Answers)
{
qnaMakerResult.Score /= 100;
if (qnaMakerResult.Score >= this.qnaInfo.ScoreThreshold)
{
qnaMakerResult.Answer = HttpUtility.HtmlDecode(qnaMakerResult.Answer);
qnaMakerResult.Questions = qnaMakerResult.Questions.Select(x => HttpUtility.HtmlDecode(x)).ToList();
filteredQnAResults.Add(qnaMakerResult);
}
}
qnaMakerResults.Answers = filteredQnAResults;
return(qnaMakerResults);
}
catch (JsonException ex)
{
throw new ArgumentException("Unable to deserialize the QnA service response.", ex);
}
}
