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;
}
public UpgradedGuard(UpgradeableGuard parentGuard)
{
_parentGuard = parentGuard;
_writerLock = new WriterGuard(_parentGuard._readerWriterLock);
}
public UpgradedGuard(UpgradeableGuard parentGuard)
{
_parentGuard = parentGuard;
_writerLock = new WriterGuard(_parentGuard._readerWriterLock);
}