internal bool MeetsOverMaxCriteria(CachedFileInfo i)
{
DateTime now = DateTime.UtcNow;
//Only require the 'used' date to comply if it 1) doesn't match created date and 2) is above 0
return((now.Subtract(i.AccessedUtc) > ProhibitRemovalIfUsedWithin || ProhibitRemovalIfUsedWithin <= new TimeSpan(0) || i.AccessedUtc == i.UpdatedUtc) &&
(now.Subtract(i.UpdatedUtc) > ProhibitRemovalIfCreatedWithin || ProhibitRemovalIfCreatedWithin <= new TimeSpan(0)));
}
/// <summary>
/// Uses old.AccessedUtc if it is newer than FileInfo.LastAccessTimeUtc
/// </summary>
/// <param name="f"></param>
/// <param name="old"></param>
public CachedFileInfo(FileInfo f, CachedFileInfo old)
{
ModifiedUtc = f.LastWriteTimeUtc;
AccessedUtc = f.LastAccessTimeUtc;
if (old != null && AccessedUtc < old.AccessedUtc)
{
AccessedUtc = old.AccessedUtc; //Use the larger value
}
UpdatedUtc = f.CreationTimeUtc;
}
public void FlushAccessedDate(CleanupWorkItem item)
{
CachedFileInfo c = cache.Index.getCachedFileInfo(item.RelativePath);
if (c == null)
{
return; //File was already deleted, nothing to do.
}
try{
cache.Locks.TryExecute(item.RelativePath.ToUpperInvariant(), 1, delegate()
{
File.SetLastAccessTimeUtc(item.PhysicalPath, c.AccessedUtc);
});
//In both of these exception cases, we don't care.
}catch (FileNotFoundException) {
}catch (UnauthorizedAccessException) {
}
}
internal bool ShouldRemove(string relativePath, CachedFileInfo info, bool isOverMax)
{
return(isOverMax ? MeetsOverMaxCriteria(info) : MeetsCleanupCriteria(info));
}
public CachedFileInfo(CachedFileInfo f, DateTime accessedDate)
{
this.ModifiedUtc = f.ModifiedUtc;
this.UpdatedUtc = f.UpdatedUtc;
this.AccessedUtc = accessedDate;
}
