private void DownloadLatestData(int marketLocation)
{
bool retry = false;
lock (DownloadLock)
{
try
{
string lastDownloadKey = LastDownloadTs.FormatInvariant(marketLocation);
CacheItem <DateTimeOffset> lastDownload = _priceCache.Get <DateTimeOffset>(lastDownloadKey);
// check to see if there is newer data available.
MarketLocationData marketDataInfo = LastMarketUpdate(marketLocation);
if (lastDownload == null || (lastDownload.IsDirty && lastDownload.Data < marketDataInfo.Freshness))
{
IEnumerable <ItemOrderStats> locationData = DownloadData(marketLocation);
_priceCache.Add(
ItemKeyFormat.FormatInvariant(marketLocation),
locationData,
DateTimeOffset.Now.Add(_cacheTtl));
Trace.TraceInformation(Resources.NewMarketData);
//// MessageBox.Show(Resources.NewMarketData, string.Empty, MessageBoxButtons.OK, MessageBoxIcon.Information);
_priceCache.Add(lastDownloadKey, DateTimeOffset.Now, DateTimeOffset.Now.Add(_cacheTtl));
}
downloadError = false;
}
catch (Exception e)
{
// log it.
Trace.TraceError(e.FormatException());
if (!downloadError &&
MessageBox.Show(
Resources.ErrorDownloadingData,
Resources.ErrorCaption,
MessageBoxButtons.YesNo,
MessageBoxIcon.Error) == DialogResult.Yes)
{
retry = true;
}
else
{
string lastDownloadKey = LastDownloadTs.FormatInvariant(marketLocation);
_priceCache.Add(lastDownloadKey, DateTimeOffset.Now, DateTimeOffset.Now.AddMinutes(30));
}
downloadError = true;
}
}
if (retry)
{
DownloadLatestData(marketLocation);
}
}
/// <summary>The last market update.</summary>
/// <param name="marketLocationId">The market location id.</param>
/// <returns>The <see cref="MarketLocationData" />.</returns>
private MarketLocationData LastMarketUpdate(int marketLocationId)
{
Task <HttpResponseMessage> requestTask =
_requestProvider.GetAsync(new Uri(EveHqBaseLocation + marketLocationId.ToInvariantString()),
"application/json");
requestTask.Wait();
MarketLocationData results = null;
if (requestTask.IsCompleted && requestTask.Result != null && !requestTask.IsCanceled &&
!requestTask.IsFaulted && requestTask.Exception == null)
{
Task <string> readTask = requestTask.Result.Content.ReadAsStringAsync();
readTask.Wait();
results = JsonConvert.DeserializeObject <MarketLocationData>(readTask.Result);
}
return(results);
}
