private static GeneralData loadGeneralData(string[] dataLines)
{
int pos;
for (pos = 0; pos < dataLines.Length; pos++)
{
if (string.Equals(dataLines[pos].Trim(), GeneralSectionHeader, StringComparison.Ordinal))
{
break;
}
}
if (pos >= dataLines.Length)
{
throw new Exception("Could not find General section in data feed.");
}
// We could use the property name as keys, but there's no heirarchy to the data, so we have no idea where the line is coming from. Just because a line starts with
// 'VERSION =' doesn't mean it's the version field of the general section. IMO it's safer to assume that the properties are always in the same order
// and just access them by line index. This is why JSON is a thing.
string version = getGeneralLineValue(dataLines, ++pos);
string reload = getGeneralLineValue(dataLines, ++pos);
string update = getGeneralLineValue(dataLines, ++pos);
string atisRefresh = getGeneralLineValue(dataLines, ++pos);
string numConnectedClients = getGeneralLineValue(dataLines, ++pos);
DateTime reloadUtc = !string.IsNullOrWhiteSpace(reload) ? DateTime.UtcNow.AddMinutes(Convert.ToDouble(reload)) : DateTime.MinValue;
DateTime updateUtc = !string.IsNullOrWhiteSpace(update) ? DateTime.ParseExact(update, DateTimeFormat, CultureInfo.CurrentCulture.DateTimeFormat) : DateTime.MinValue;
GeneralData general = new GeneralData(version, reloadUtc, updateUtc,
!string.IsNullOrWhiteSpace(atisRefresh) ? Convert.ToInt32(atisRefresh) : 0,
!string.IsNullOrWhiteSpace(numConnectedClients) ? Convert.ToInt32(numConnectedClients) : 0);
return(general);
}
private async Task refreshIfDataExpired()
{
if (_lastRefresh < (_general?.ReloadUtc ?? DateTime.MinValue))
{
return;
}
string[] dataLines = (await Loader.LoadData(Status.GetDataUrl().ToString()))
.Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries)
.Where(s => !s.StartsWith(CommentCharacter)).ToArray();
_general = loadGeneralData(dataLines);
_clients = loadClientData(dataLines);
_lastRefresh = DateTime.UtcNow;
}