/// <summary>
/// Deletes all cache files
/// </summary>
public static void DeleteCache()
{
LunaLog.Log("[LMP]: Deleting cache!");
foreach (var cacheFile in GetCachedFiles())
{
File.Delete(cacheFile);
}
FileLengths.Clear();
FileCreationTimes.Clear();
CurrentCacheSize = 0;
}
private long LengthGet(FileInfo instance)
{
var result = default(long);
string path = null;
if (FilePaths.TryGetValue(instance, out path))
{
FileLengths.TryGetValue(path, out result);
}
return(result);
}
/// <summary>
/// Delete old cache files or if size is bigger than the limit.
/// </summary>
public static void ExpireCache()
{
LunaLog.Log("[LMP]: Expiring cache!");
//No folder, no delete.
if (!Directory.Exists(CommonUtil.CombinePaths(CacheDirectory, "Incoming")))
{
LunaLog.Log("[LMP]: No sync cache folder, skipping expire.");
return;
}
//Delete partial incoming files
var incomingFiles = Directory.GetFiles(CommonUtil.CombinePaths(CacheDirectory, "Incoming"));
foreach (var incomingFile in incomingFiles)
{
LunaLog.Log($"[LMP]: Deleting partially cached object {incomingFile}");
File.Delete(incomingFile);
}
//Delete old files
var cacheObjects = GetCachedObjects();
CurrentCacheSize = 0;
foreach (var cacheObject in cacheObjects)
{
var cacheFile = CommonUtil.CombinePaths(CacheDirectory, $"{cacheObject}.txt");
//If the file is older than a week, delete it.
if (File.GetCreationTime(cacheFile).AddDays(7d) < DateTime.Now)
{
LunaLog.Log($"[LMP]: Deleting cached object {cacheObject}, reason: Expired!");
File.Delete(cacheFile);
}
else
{
var fi = new FileInfo(cacheFile);
FileCreationTimes[cacheObject] = fi.CreationTime;
FileLengths[cacheObject] = fi.Length;
CurrentCacheSize += fi.Length;
}
}
//While the directory is over (cacheSize) MB
while (CacheSizeExceeded())
{
var deleteObject = string.Empty;
//Find oldest file
foreach (var testFile in FileCreationTimes)
{
if (string.IsNullOrEmpty(deleteObject))
{
deleteObject = testFile.Key;
}
if (testFile.Value < FileCreationTimes[deleteObject])
{
deleteObject = testFile.Key;
}
}
LunaLog.Log($"[LMP]: Deleting cached object {deleteObject}, reason: Cache full!");
var deleteFile = CommonUtil.CombinePaths(CacheDirectory, $"{deleteObject}.txt");
File.Delete(deleteFile);
CurrentCacheSize -= FileLengths[deleteObject];
if (FileCreationTimes.ContainsKey(deleteObject))
{
FileCreationTimes.Remove(deleteObject);
}
if (FileLengths.ContainsKey(deleteObject))
{
FileLengths.Remove(deleteObject);
}
}
}