public void GetHash_CalculatesHashCodeForFile(int bytesToRead, string content, string expected) { // Arrange var bytes = Encoding.UTF8.GetBytes(content); var file = new Mock <IFileInfo>(); file.Setup(f => f.CreateReadStream()) .Returns(new SlowStream(bytes, bytesToRead)); // Act var result = RazorFileHash.GetHash(file.Object, hashAlgorithmVersion: 1); // Assert Assert.Equal(expected, result); }
private GetOrAddResult GetOrAddCore(string relativePath, Func <RelativeFileInfo, CompilationResult> compile) { var normalizedPath = NormalizePath(relativePath); var cacheEntry = _cache.Get <CompilerCacheEntry>(normalizedPath); if (cacheEntry == null) { var fileInfo = _fileProvider.GetFileInfo(relativePath); if (!fileInfo.Exists) { return(null); } var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath); return(OnCacheMiss(relativeFileInfo, normalizedPath, compile)); } else if (cacheEntry.IsPreCompiled && !cacheEntry.IsValidatedPreCompiled) { // For precompiled views, the first time the entry is read, we need to ensure that no changes were made // either to the file associated with this entry, or any _ViewImports associated with it between the time // the View was precompiled and the time EnsureInitialized was called. For later iterations, we can // rely on expiration triggers ensuring the validity of the entry. var fileInfo = _fileProvider.GetFileInfo(relativePath); if (!fileInfo.Exists) { return(null); } var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath); if (cacheEntry.Length != fileInfo.Length) { // Recompile if the file lengths differ return(OnCacheMiss(relativeFileInfo, normalizedPath, compile)); } if (AssociatedGlobalFilesChanged(cacheEntry, compile)) { // Recompile if _ViewImports have changed since the entry was created. return(OnCacheMiss(relativeFileInfo, normalizedPath, compile)); } if (cacheEntry.LastModified == fileInfo.LastModified) { // Assigning to IsValidatedPreCompiled is an atomic operation and will result in a safe race // if it is being concurrently updated and read. cacheEntry.IsValidatedPreCompiled = true; return(new GetOrAddResult { CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType), CompilerCacheEntry = cacheEntry }); } // Timestamp doesn't match but it might be because of deployment, compare the hash. if (cacheEntry.IsPreCompiled && string.Equals(cacheEntry.Hash, RazorFileHash.GetHash(fileInfo, cacheEntry.HashAlgorithmVersion), StringComparison.Ordinal)) { // Cache hit, but we need to update the entry. // Assigning to LastModified and IsValidatedPreCompiled are atomic operations and will result in safe race // if the entry is being concurrently read or updated. cacheEntry.LastModified = fileInfo.LastModified; cacheEntry.IsValidatedPreCompiled = true; return(new GetOrAddResult { CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType), CompilerCacheEntry = cacheEntry }); } // it's not a match, recompile return(OnCacheMiss(relativeFileInfo, normalizedPath, compile)); } return(new GetOrAddResult { CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType), CompilerCacheEntry = cacheEntry }); }
public void GetOrAdd_IgnoresCachedValueIfFileIsIdentical_ButGlobalWasDeletedSinceCacheWasCreated() { // Arrange var expectedType = typeof(RuntimeCompileDifferent); var lastModified = DateTime.UtcNow; var fileProvider = new TestFileProvider(); var viewCollection = new ViewCollection(); var precompiledView = viewCollection.FileInfos[0]; precompiledView.RelativePath = "Views\\Index.cshtml"; var viewFileInfo = new TestFileInfo { Content = new PreCompile().Content, LastModified = precompiledView.LastModified, PhysicalPath = precompiledView.RelativePath }; fileProvider.AddFile(viewFileInfo.PhysicalPath, viewFileInfo); var globalFileInfo = new TestFileInfo { PhysicalPath = "Views\\_ViewImports.cshtml", Content = "viewstart-content", LastModified = lastModified }; var globalFile = new RazorFileInfo { FullTypeName = typeof(RuntimeCompileIdentical).FullName, RelativePath = globalFileInfo.PhysicalPath, LastModified = globalFileInfo.LastModified, Hash = RazorFileHash.GetHash(globalFileInfo, hashAlgorithmVersion: 1), HashAlgorithmVersion = 1, Length = globalFileInfo.Length }; fileProvider.AddFile(globalFileInfo.PhysicalPath, globalFileInfo); viewCollection.Add(globalFile); var cache = new CompilerCache(new[] { viewCollection }, TestLoadContext, fileProvider); // Act 1 var result1 = cache.GetOrAdd(viewFileInfo.PhysicalPath, compile: _ => { throw new Exception("should not be called"); }); // Assert 1 Assert.NotSame(CompilerCacheResult.FileNotFound, result1); var actual1 = result1.CompilationResult; Assert.NotNull(actual1); Assert.Equal(typeof(PreCompile), actual1.CompiledType); // Act 2 var trigger = fileProvider.GetTrigger(globalFileInfo.PhysicalPath); trigger.IsExpired = true; var result2 = cache.GetOrAdd(viewFileInfo.PhysicalPath, compile: _ => CompilationResult.Successful(expectedType)); // Assert 2 Assert.NotSame(CompilerCacheResult.FileNotFound, result2); var actual2 = result2.CompilationResult; Assert.NotNull(actual2); Assert.Equal(expectedType, actual2.CompiledType); }