using System.Threading; using System.Threading.Tasks; using Wabbajack.DTOs.Streams; using Wabbajack.DTOs.Vfs; using Wabbajack.Hashing.xxHash64; using Wabbajack.VFS.Interfaces; namespace Wabbajack.VFS; public class FallthroughVFSCache : IVfsCache { private readonly IVfsCache[] _caches; public FallthroughVFSCache(IVfsCache[] caches) { _caches = caches; } public async Task Get(Hash hash, IStreamFactory sf, CancellationToken token) { IndexedVirtualFile? result = null; foreach (var cache in _caches) { if (result == null) { result = await cache.Get(hash, sf, token); if (result == null) continue; foreach (var upperCache in _caches) { if (upperCache != cache) await upperCache.Put(result, token); } return result; } } return result; } public async Task Put(IndexedVirtualFile file, CancellationToken token) { foreach (var cache in _caches) { await cache.Put(file, token); } } }