private async Task WatchDatabase(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
try
{
await Task.Delay(_configurationSource.PollingInterval, cancellationToken);
IDictionary <string, string> actualData = await GetDataAsync();
byte[] computedHash = ComputeHash(actualData);
if (!computedHash.SequenceEqual(_lastComputedHash))
{
Data = actualData;
OnReload();
}
_lastComputedHash = computedHash;
}
catch (Exception ex)
{
var exceptionContext = new ConfigurationEFCoreLoadExceptionContext <TDbContext>(_configurationSource, ex);
_configurationSource.OnLoadException?.Invoke(exceptionContext);
if (!exceptionContext.Ignore)
{
throw;
}
}
}
}
public override void Load()
{
if (_watchDbTask != null)
{
return;
}
try
{
Data = GetData();
_lastComputedHash = ComputeHash(Data);
}
catch (Exception ex)
{
var exceptionContext = new ConfigurationEFCoreLoadExceptionContext <TDbContext>(_configurationSource, ex);
_configurationSource.OnLoadException?.Invoke(exceptionContext);
if (!exceptionContext.Ignore)
{
throw;
}
}
var cancellationToken = _cancellationTokenSource.Token;
if (_configurationSource.ReloadOnChange)
{
_watchDbTask = Task.Run(() => WatchDatabase(cancellationToken), cancellationToken);
}
}