private async Task <string> ExecuteWithTimeout(AsyncCodeActivityContext context, CancellationToken cancellationToken = default)
{
///////////////////////////
// Get inputs from context
var endpointURL = EndpointURL.Get(context);
var apiKey = APIKey.Get(context);
var queryData = QueryData.Get(context);
/* Build request body (feature dictionary) */
// -> here we assume that the queryData is a json string with keys corresponding to features
JArray jsonDataArray = JArray.Parse(queryData);
JObject jsonData = (JObject)jsonDataArray.First;
// -> we build the feature dictionary just by putting all keys into it
var jsonQuery = new JObject();
jsonQuery.Add("features", jsonData);
// -> StringContent is required for HTTP POST call
var stringContent = new StringContent(jsonQuery.ToString());
/* Initialize HttpClient object */
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(endpointURL);
// -> Add an Accept header for JSON format.
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
// -> Handle authentication
var authToken = Encoding.ASCII.GetBytes(apiKey + ":"); // don't forget the colon!!
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
Convert.ToBase64String(authToken));
/* Post query to DSS API Node */
HttpResponseMessage response = await client.PostAsync(String.Empty, stringContent);
response.EnsureSuccessStatusCode();
var resp = await response.Content.ReadAsStringAsync();
// Dispose once all HttpClient calls are complete. This is not necessary if the containing object will be disposed of; for example in this case the HttpClient instance will be disposed automatically when the application terminates so the following call is superfluous.
client.Dispose();
// Outputs
return(resp);
}
