private async Task ValidateCachedContextAsync()
{
using (var guard = new UpgradeableGuard(_refreshLock))
{
if (_cacheRefreshing || _nextCachedRefreshTime > DateTime.Now)
{
return;
}
guard.UpgradeToWriterLock();
if (_cacheRefreshing)
{
return; // Double-check after writer upgrade
}
_cacheRefreshing = true;
}
if (_nextCachedRefreshTime <= DateTime.Now)
{
await RefreshMetadataAsync();
}
using (new WriterGuard(_refreshLock))
{
_cacheRefreshing = false;
}
}
private async Task <OidcDataManager> ValidateCachedContextAsync()
{
using (var guard = new UpgradeableGuard(_refreshLock))
{
if (_cacheRefreshing || _options.MetadataRefreshInterval < 0 || _nextCachedRefreshTime > DateTime.Now)
{
return(this);
}
guard.UpgradeToWriterLock();
if (_cacheRefreshing)
{
return(this); // Double-check after writer upgrade
}
_cacheRefreshing = true;
}
if (_options.MetadataRefreshInterval >= 0 && _nextCachedRefreshTime <= DateTime.Now)
{
await TryRefreshMetadataAsync();
}
using (new WriterGuard(_refreshLock))
{
_cacheRefreshing = false;
}
return(this);
}
/// <summary>
/// Validate a connection, if not connected, try connect
/// </summary>
/// <returns></returns>
private bool EnsureConnection(bool throwException = true)
{
using (var guard = new UpgradeableGuard(_connectionLock))
{
if (!_client.IsConnected)
{
OpenConnection();
if (!_client.IsConnected && throwException)
{
throw new PlcConnectionException();
}
}
return(_papper != null && _client.IsConnected);
}
}
private async Task ValidateCachedContextAsync()
{
using (var guard = new UpgradeableGuard(_refreshLock))
{
if (_cacheRefreshing || _nextCachedRefreshTime > DateTime.Now)
return;
guard.UpgradeToWriterLock();
if (_cacheRefreshing) return; // Double-check after writer upgrade
_cacheRefreshing = true;
}
if (_nextCachedRefreshTime <= DateTime.Now)
await RefreshMetadataAsync();
using (new WriterGuard(_refreshLock))
{
_cacheRefreshing = false;
}
}
