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Improve GetCounts performance.

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Michael Bucari-Tovo
2025-12-02 12:43:12 -07:00
parent d48ce39773
commit a230605ed5
1 changed files with 23 additions and 3 deletions
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26
Source/LibationFileManager/AudibleFileStorage.cs
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@@ -138,15 +138,35 @@ namespace LibationFileManager
protected override LongPath? GetFilePathCustom(string productId)
=> GetFilePathsCustom(productId).FirstOrDefault();
//GetFilePathsCustom gets called for every book during LibraryCommands.GetCounts().
//Cache the results for a short time to avoid excessive file system hits.
private DateTime lastDlInProgressEnumeration;
private static TimeSpan dlInProgressCacheTime = TimeSpan.FromSeconds(10);
private IEnumerable<LongPath>? dlInProgressFilesCache;
protected override List<LongPath> GetFilePathsCustom(string productId)
{
if (DownloadsInProgressDirectory is not LongPath dlFolder)
return [];
var regex = GetBookSearchRegex(productId);
return FileUtility
.SaferEnumerateFiles(dlFolder, "*.*", SearchOption.AllDirectories)
.Where(s => regex.IsMatch(s)).ToList();
if (DateTime.UtcNow - lastDlInProgressEnumeration > dlInProgressCacheTime)
{
dlInProgressFilesCache = null;
}
if (dlInProgressFilesCache is null)
{
dlInProgressFilesCache
= FileUtility
.SaferEnumerateFiles(dlFolder, "*.*", SearchOption.AllDirectories)
.ToArray();
lastDlInProgressEnumeration = DateTime.UtcNow;
}
return dlInProgressFilesCache.Where(s => regex.IsMatch(s)).ToList();
}
public bool Exists(string productId) => GetFilePath(productId) is not null;