/// <summary>
/// Recursive method that polls the activity status until it completes.
/// </summary>
/// <param name="client">NField Connection Client (this)</param>
/// <param name="activityId">The id of the activity to wait for.</param>
/// <param name="fieldNameResult">The name of the result field</param>
/// <returns>The <see cref="BackgroundActivityStatus" /> id.</returns>
internal static Task <T> GetActivityResultAsync <T>(this INfieldConnectionClient client, string activityId, string fieldNameResult)
{
return(client.Client.GetAsync(client.BackgroundActivityUrl(activityId))
.ContinueWith(response => response.Result.Content.ReadAsStringAsync())
.Unwrap()
.ContinueWith(content =>
{
var obj = JObject.Parse(content.Result);
var status = obj["Status"].Value <int>();
switch (status)
{
case 0: // pending
case 1: // started
Thread.Sleep(millisecondsTimeout: 200);
return client.GetActivityResultAsync <T>(activityId, fieldNameResult);
case 2: // succeeded
var tcs = new TaskCompletionSource <T>();
tcs.SetResult(obj[fieldNameResult].Value <T>());
return tcs.Task;
case 3: // failed
default:
throw new NfieldErrorException("Action did not complete successfully");
}
})
.Unwrap());
}
public void InitializeNfieldConnection(INfieldConnectionClient connection)
{
ConnectionClient = connection;
}
public void InitializeNfieldConnection(INfieldConnectionClient connection)
{
ConnectionClient = connection;
}
private static Uri BackgroundActivityUrl(this INfieldConnectionClient client, string activityId)
{
return(new Uri(client.NfieldServerUri, $"BackgroundActivities/{activityId}/"));
}
