/// <summary>
/// Checks if any of the hosted identities expired.
/// If so, it deletes them.
/// </summary>
public void CheckExpiredHostedIdentities()
{
log.Trace("()");
DateTime now = DateTime.UtcNow;
List <byte[]> imagesToDelete = new List <byte[]>();
using (UnitOfWork unitOfWork = new UnitOfWork())
{
// Disable change tracking for faster multiple deletes.
unitOfWork.Context.ChangeTracker.AutoDetectChangesEnabled = false;
DatabaseLock lockObject = UnitOfWork.HostedIdentityLock;
unitOfWork.AcquireLock(lockObject);
try
{
List <HostedIdentity> expiredIdentities = unitOfWork.HostedIdentityRepository.Get(i => i.ExpirationDate < now, null, true).ToList();
if (expiredIdentities.Count > 0)
{
log.Debug("There are {0} expired hosted identities.", expiredIdentities.Count);
foreach (HostedIdentity identity in expiredIdentities)
{
if (identity.ProfileImage != null)
{
imagesToDelete.Add(identity.ProfileImage);
}
if (identity.ThumbnailImage != null)
{
imagesToDelete.Add(identity.ThumbnailImage);
}
unitOfWork.HostedIdentityRepository.Delete(identity);
log.Debug("Identity ID '{0}' expired and will be deleted.", identity.IdentityId.ToHex());
}
unitOfWork.SaveThrow();
log.Debug("{0} expired hosted identities were deleted.", expiredIdentities.Count);
}
else
{
log.Debug("No expired hosted identities found.");
}
}
catch (Exception e)
{
log.Error("Exception occurred: {0}", e.ToString());
}
unitOfWork.ReleaseLock(lockObject);
}
if (imagesToDelete.Count > 0)
{
ImageManager imageManager = (ImageManager)Base.ComponentDictionary["Data.ImageManager"];
foreach (byte[] hash in imagesToDelete)
{
imageManager.RemoveImageReference(hash);
}
}
log.Trace("(-)");
}