/// <summary>
/// Processes the request async.
/// </summary>
public async override Task ProcessAsync()
{
try
{
DataFeedBasicRequest dfRequest;
try
{
dfRequest = await Receive <Structures.Basic.DataFeedBasicRequest>();
}
catch (WebException)
{
dfRequest = new DataFeedBasicRequest("ForceDownload");
}
Logging.Log($"Received data feed request from { ((IPEndPoint)client.Client.RemoteEndPoint).Address.ToString() }. Data: { dfRequest.ToString() }");
Structures.Basic.DataFeedBasicResponse dfRes = null;
await Task.Run(() =>
{
if (dfRequest.Version == "ForceDownload" || dfRequest.Version != DataFeed.Basic.Version)
{
dfRes = new Structures.Basic.DataFeedBasicResponse()
{
Data = DataFeed.Basic
};
}
else
{
dfRes = new Structures.Basic.DataFeedBasicResponse();
}
});
Send(dfRes);
Logging.Log($"Data feed response to { ((IPEndPoint)client.Client.RemoteEndPoint).Address.ToString() } was successfully send.");
}
catch (Exception ex)
{
Logging.Log($"Data feed request from { ((IPEndPoint)client.Client.RemoteEndPoint).Address.ToString() } could not be processed. { Logging.LogException(ex) }");
}
Dispose();
}
/// <summary>
/// Loads data while starting the application.
/// </summary>
public static async Task DownloadAsync(bool forceDownload = false, int timeout = 5000)
{
Downloaded = false;
try
{
Structures.Basic.DataFeedBasicResponse response = null;
try
{
using (var sr = new System.IO.StreamReader(BasePath + "basic/.version"))
response = await new BasicDataProcessing().ProcessAsync(new Structures.Basic.DataFeedBasicRequest(sr.ReadLine()), timeout);
}
catch (Exception ex)
{
if (ex is WebException && (forceDownload || !System.IO.Directory.Exists(BasePath + "basic/"))) // Server offline and data does not exist. Cannot continue.
{
throw;
}
else if (ex is System.IO.IOException) // Data does not exist or the version file is corrupted.
{
try
{
response = await new BasicDataProcessing().ProcessAsync(new Structures.Basic.DataFeedBasicRequest(), timeout);
}
catch (Exception innerEx)
{
// Some data exists, we do not have to do anything.
if (innerEx is WebException)
{
throw;
}
}
}
}
if (response != null && response.ShouldBeUpdated)
{
response.Data.Save(BasePath);
}
}
catch (Exception ex)
{
if (ex is WebException) // Server offline.
{
throw;
}
else
{
throw new ArgumentException("Fatal error. Cannot process the data.");
}
}
Downloaded = true;
Load();
}
