333 lines
13 KiB
C#
333 lines
13 KiB
C#
using LZ4;
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using MareSynchronos.Interop;
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using MareSynchronos.MareConfiguration;
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using MareSynchronos.Utils;
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using Microsoft.Extensions.Logging;
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using System.Collections.Concurrent;
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using System.Globalization;
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using System.Text;
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namespace MareSynchronos.FileCache;
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public sealed class FileCacheManager : IDisposable
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{
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public const string CsvSplit = "|";
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public const string CachePrefix = "{cache}";
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public const string PenumbraPrefix = "{penumbra}";
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private readonly MareConfigService _configService;
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private readonly string _csvPath;
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private readonly ConcurrentDictionary<string, List<FileCacheEntity>> _fileCaches = new(StringComparer.Ordinal);
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private readonly object _fileWriteLock = new();
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private readonly IpcManager _ipcManager;
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private readonly ILogger<FileCacheManager> _logger;
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public FileCacheManager(ILogger<FileCacheManager> logger, IpcManager ipcManager, MareConfigService configService)
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{
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_logger = logger;
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_ipcManager = ipcManager;
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_configService = configService;
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_csvPath = Path.Combine(configService.ConfigurationDirectory, "FileCache.csv");
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lock (_fileWriteLock)
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{
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try
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{
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if (File.Exists(CsvBakPath))
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{
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File.Move(CsvBakPath, _csvPath, overwrite: true);
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}
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}
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catch (Exception ex)
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{
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_logger.LogWarning(ex, "Failed to move BAK to ORG, deleting BAK");
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try
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{
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if (File.Exists(CsvBakPath))
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File.Delete(CsvBakPath);
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}
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catch (Exception ex1)
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{
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_logger.LogWarning(ex1, "Could not delete bak file");
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}
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}
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}
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if (File.Exists(_csvPath))
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{
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var entries = File.ReadAllLines(_csvPath);
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foreach (var entry in entries)
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{
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var splittedEntry = entry.Split(CsvSplit, StringSplitOptions.None);
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try
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{
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var hash = splittedEntry[0];
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if (hash.Length != 40) throw new InvalidOperationException("Expected Hash length of 40, received " + hash.Length);
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var path = splittedEntry[1];
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var time = splittedEntry[2];
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long size = -1;
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long compressed = -1;
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if (splittedEntry.Length > 3)
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{
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if (long.TryParse(splittedEntry[3], CultureInfo.InvariantCulture, out long result))
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{
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size = result;
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}
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if (long.TryParse(splittedEntry[4], CultureInfo.InvariantCulture, out long resultCompressed))
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{
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compressed = resultCompressed;
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}
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}
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AddHashedFile(ReplacePathPrefixes(new FileCacheEntity(hash, path, time, size, compressed)));
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}
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catch (Exception ex)
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{
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_logger.LogWarning(ex, "Failed to initialize entry {entry}, ignoring", entry);
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}
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}
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}
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}
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private string CsvBakPath => _csvPath + ".bak";
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public FileCacheEntity? CreateCacheEntry(string path)
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{
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_logger.LogTrace("Creating cache entry for {path}", path);
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FileInfo fi = new(path);
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if (!fi.Exists) return null;
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var fullName = fi.FullName.ToLowerInvariant();
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if (!fullName.Contains(_configService.Current.CacheFolder.ToLowerInvariant(), StringComparison.Ordinal)) return null;
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string prefixedPath = fullName.Replace(_configService.Current.CacheFolder.ToLowerInvariant(), CachePrefix + "\\", StringComparison.Ordinal).Replace("\\\\", "\\", StringComparison.Ordinal);
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return CreateFileCacheEntity(fi, prefixedPath);
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}
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public FileCacheEntity? CreateFileEntry(string path)
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{
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_logger.LogTrace("Creating file entry for {path}", path);
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FileInfo fi = new(path);
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if (!fi.Exists) return null;
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var fullName = fi.FullName.ToLowerInvariant();
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if (!fullName.Contains(_ipcManager.PenumbraModDirectory!.ToLowerInvariant(), StringComparison.Ordinal)) return null;
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string prefixedPath = fullName.Replace(_ipcManager.PenumbraModDirectory!.ToLowerInvariant(), PenumbraPrefix + "\\", StringComparison.Ordinal).Replace("\\\\", "\\", StringComparison.Ordinal);
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return CreateFileCacheEntity(fi, prefixedPath);
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}
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public void Dispose()
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{
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_logger.LogTrace("Disposing {type}", GetType());
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WriteOutFullCsv();
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GC.SuppressFinalize(this);
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}
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public List<FileCacheEntity> GetAllFileCaches() => _fileCaches.Values.SelectMany(v => v).ToList();
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public string GetCacheFilePath(string hash, string extension)
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{
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return Path.Combine(_configService.Current.CacheFolder, hash + "." + extension);
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}
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public FileCacheEntity? GetFileCacheByHash(string hash)
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{
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if (_fileCaches.TryGetValue(hash, out var hashes))
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{
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var item = hashes.FirstOrDefault();
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if (item != null) return GetValidatedFileCache(item);
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}
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return null;
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}
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public List<FileCacheEntity> GetAllFileCachesByHash(string hash)
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{
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List<FileCacheEntity> output = new();
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if (_fileCaches.TryGetValue(hash, out var fileCacheEntities))
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{
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foreach (var filecache in fileCacheEntities)
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{
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var validated = GetValidatedFileCache(filecache);
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if (validated != null) output.Add(validated);
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}
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}
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return output;
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}
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public FileCacheEntity? GetFileCacheByPath(string path)
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{
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var cleanedPath = path.Replace("/", "\\", StringComparison.OrdinalIgnoreCase).ToLowerInvariant().Replace(_ipcManager.PenumbraModDirectory!.ToLowerInvariant(), "", StringComparison.OrdinalIgnoreCase);
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var entry = _fileCaches.SelectMany(v => v.Value).FirstOrDefault(f => f.ResolvedFilepath.EndsWith(cleanedPath, StringComparison.OrdinalIgnoreCase));
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if (entry == null)
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{
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_logger.LogDebug("Found no entries for {path}", cleanedPath);
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return CreateFileEntry(path);
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}
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var validatedCacheEntry = GetValidatedFileCache(entry);
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return validatedCacheEntry;
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}
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public async Task<(string, byte[])> GetCompressedFileData(string fileHash, CancellationToken uploadToken)
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{
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var fileCache = GetFileCacheByHash(fileHash)!.ResolvedFilepath;
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return (fileHash, LZ4Codec.WrapHC(await File.ReadAllBytesAsync(fileCache, uploadToken).ConfigureAwait(false), 0,
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(int)new FileInfo(fileCache).Length));
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}
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public void RemoveHashedFile(FileCacheEntity? fileCache)
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{
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if (fileCache == null) return;
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if (_fileCaches.TryGetValue(fileCache.Hash, out var caches))
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{
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caches?.RemoveAll(c => string.Equals(c.PrefixedFilePath, fileCache.PrefixedFilePath, StringComparison.Ordinal));
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if (_fileCaches.Count == 0)
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{
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_fileCaches.Remove(fileCache.Hash, out _);
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}
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}
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}
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public void UpdateHashedFile(FileCacheEntity fileCache, bool computeProperties = true)
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{
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_logger.LogTrace("Updating hash for {path}", fileCache.ResolvedFilepath);
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if (computeProperties)
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{
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var fi = new FileInfo(fileCache.ResolvedFilepath);
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fileCache.Size = fi.Length;
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fileCache.CompressedSize = null;
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fileCache.Hash = Crypto.GetFileHash(fileCache.ResolvedFilepath);
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fileCache.LastModifiedDateTicks = fi.LastWriteTimeUtc.Ticks.ToString(CultureInfo.InvariantCulture);
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}
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RemoveHashedFile(fileCache);
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AddHashedFile(fileCache);
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}
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public (FileState, FileCacheEntity) ValidateFileCacheEntity(FileCacheEntity fileCache)
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{
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fileCache = ReplacePathPrefixes(fileCache);
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FileInfo fi = new(fileCache.ResolvedFilepath);
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if (!fi.Exists)
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{
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return (FileState.RequireDeletion, fileCache);
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}
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if (!string.Equals(fi.LastWriteTimeUtc.Ticks.ToString(CultureInfo.InvariantCulture), fileCache.LastModifiedDateTicks, StringComparison.Ordinal))
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{
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return (FileState.RequireUpdate, fileCache);
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}
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return (FileState.Valid, fileCache);
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}
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public void WriteOutFullCsv()
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{
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StringBuilder sb = new();
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foreach (var entry in _fileCaches.SelectMany(k => k.Value).OrderBy(f => f.PrefixedFilePath, StringComparer.OrdinalIgnoreCase))
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{
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sb.AppendLine(entry.CsvEntry);
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}
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lock (_fileWriteLock)
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{
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if (File.Exists(_csvPath))
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{
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File.Copy(_csvPath, CsvBakPath, overwrite: true);
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}
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try
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{
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File.WriteAllText(_csvPath, sb.ToString());
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File.Delete(CsvBakPath);
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}
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catch
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{
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File.WriteAllText(CsvBakPath, sb.ToString());
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}
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}
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}
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internal FileCacheEntity MigrateFileHashToExtension(FileCacheEntity fileCache, string ext)
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{
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try
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{
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RemoveHashedFile(fileCache);
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FileInfo oldCache = new(fileCache.ResolvedFilepath);
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var extensionPath = fileCache.ResolvedFilepath.ToUpper() + "." + ext;
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File.Move(fileCache.ResolvedFilepath, extensionPath, true);
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var newHashedEntity = new FileCacheEntity(fileCache.Hash, fileCache.PrefixedFilePath + "." + ext, DateTime.UtcNow.Ticks.ToString());
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newHashedEntity.SetResolvedFilePath(extensionPath);
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FileInfo newCache = new FileInfo(extensionPath);
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newCache.LastAccessTime = oldCache.LastAccessTime;
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newCache.LastWriteTime = oldCache.LastWriteTime;
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AddHashedFile(newHashedEntity);
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_logger.LogDebug("Migrated from {oldPath} to {newPath}", fileCache.ResolvedFilepath, newHashedEntity.ResolvedFilepath);
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return newHashedEntity;
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}
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catch (Exception ex)
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{
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AddHashedFile(fileCache);
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_logger.LogWarning(ex, "Failed to migrate entity {entity}", fileCache.PrefixedFilePath);
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return fileCache;
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}
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}
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private void AddHashedFile(FileCacheEntity fileCache)
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{
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if (!_fileCaches.TryGetValue(fileCache.Hash, out var entries))
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{
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_fileCaches[fileCache.Hash] = entries = new();
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}
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entries.Add(fileCache);
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}
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private FileCacheEntity? CreateFileCacheEntity(FileInfo fileInfo, string prefixedPath, string? hash = null)
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{
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hash ??= Crypto.GetFileHash(fileInfo.FullName);
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var entity = new FileCacheEntity(hash, prefixedPath, fileInfo.LastWriteTimeUtc.Ticks.ToString(CultureInfo.InvariantCulture), fileInfo.Length);
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entity = ReplacePathPrefixes(entity);
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AddHashedFile(entity);
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lock (_fileWriteLock)
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{
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File.AppendAllLines(_csvPath, new[] { entity.CsvEntry });
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}
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var result = GetFileCacheByPath(fileInfo.FullName);
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_logger.LogDebug("Creating file cache for {name} success: {success}", fileInfo.FullName, (result != null));
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return result;
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}
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private FileCacheEntity? GetValidatedFileCache(FileCacheEntity fileCache)
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{
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var resulingFileCache = ReplacePathPrefixes(fileCache);
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resulingFileCache = Validate(resulingFileCache);
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return resulingFileCache;
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}
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private FileCacheEntity ReplacePathPrefixes(FileCacheEntity fileCache)
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{
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if (fileCache.PrefixedFilePath.StartsWith(PenumbraPrefix, StringComparison.OrdinalIgnoreCase))
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{
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fileCache.SetResolvedFilePath(fileCache.PrefixedFilePath.Replace(PenumbraPrefix, _ipcManager.PenumbraModDirectory, StringComparison.Ordinal));
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}
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else if (fileCache.PrefixedFilePath.StartsWith(CachePrefix, StringComparison.OrdinalIgnoreCase))
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{
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fileCache.SetResolvedFilePath(fileCache.PrefixedFilePath.Replace(CachePrefix, _configService.Current.CacheFolder, StringComparison.Ordinal));
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}
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return fileCache;
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}
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private FileCacheEntity? Validate(FileCacheEntity fileCache)
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{
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var file = new FileInfo(fileCache.ResolvedFilepath);
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if (!file.Exists)
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{
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RemoveHashedFile(fileCache);
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return null;
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}
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if (!string.Equals(file.LastWriteTimeUtc.Ticks.ToString(), fileCache.LastModifiedDateTicks, StringComparison.Ordinal))
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{
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UpdateHashedFile(fileCache);
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}
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return fileCache;
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}
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} |