/// <summary>The download data.</summary>
/// <param name="entityId">The entity id.</param>
/// <returns>The <see cref="IEnumerable" />.</returns>
private IEnumerable <ItemOrderStats> DownloadData(int entityId)
{
IEnumerable <ItemOrderStats> results = null;
Task <HttpResponseMessage> requestTask =
_requestProvider.GetAsync(
new Uri(EveHqMarketDataDumpsLocation.FormatInvariant(entityId.ToInvariantString())));
requestTask.Wait(); // wait for the completion (we're in a background task anyways)
if (requestTask.IsCompleted && !requestTask.IsCanceled && !requestTask.IsFaulted &&
requestTask.Exception == null)
{
Task <Stream> readTask = requestTask.Result.Content.ReadAsStreamAsync();
readTask.Wait();
// process result
using (var buffer = new MemoryStream())
using (ZipFile compressedData = ZipFile.Read(readTask.Result))
{
ZipEntry marketData = compressedData["{0}.txt".FormatInvariant(entityId)];
marketData.Extract(buffer);
string jsonData = Encoding.UTF8.GetString(buffer.ToArray());
results = JsonConvert.DeserializeObject <IEnumerable <ItemOrderStats> >(jsonData);
}
}
return(results);
}
/// <summary>
/// Send request to CREST, fetch data in an async process and store the result to the cache
/// </summary>
/// <param name="crestEndpoint"></param>
public void fetchData(Uri crestEndpoint)
{
// call data, parse, and so on
Task <HttpResponseMessage> requestTask = _requestProvider.GetAsync(crestEndpoint);
requestTask.Wait();
if (requestTask.IsCompleted && !requestTask.IsCanceled && !requestTask.IsFaulted &&
requestTask.Exception == null && requestTask.Result != null)
{
Task <Stream> contentStreamTask = requestTask.Result.Content.ReadAsStreamAsync();
contentStreamTask.Wait();
using (Stream stream = contentStreamTask.Result)
{
using (StreamReader reader = new StreamReader(stream))
{
if (!_cache.ContainsKey(crestEndpoint))
{
_cache.Add(crestEndpoint, new CacheItem(1, reader.ReadToEnd()));
}
}
}
}
}