private ViewCompilerWorkItem CreatePrecompiledWorkItem(string normalizedPath, CompiledViewDescriptor precompiledView) { // We have a precompiled view - but we're not sure that we can use it yet. // // We need to determine first if we have enough information to 'recompile' this view. If that's the case // we'll create change tokens for all of the files. // // Then we'll attempt to validate if any of those files have different content than the original sources // based on checksums. if (precompiledView.Item == null || !ChecksumValidator.IsRecompilationSupported(precompiledView.Item)) { return(new ViewCompilerWorkItem() { // If we don't have a checksum for the primary source file we can't recompile. SupportsCompilation = false, ExpirationTokens = Array.Empty <IChangeToken>(), // Never expire because we can't recompile. Descriptor = precompiledView, // This will be used as-is. }); } var item = new ViewCompilerWorkItem() { SupportsCompilation = true, Descriptor = precompiledView, // This might be used, if the checksums match. // Used to validate and recompile NormalizedPath = normalizedPath, ExpirationTokens = new List <IChangeToken>(), }; var checksums = precompiledView.Item.GetChecksumMetadata(); for (var i = 0; i < checksums.Count; i++) { // We rely on Razor to provide the right set of checksums. Trust the compiler, it has to do a good job, // so it probably will. item.ExpirationTokens.Add(_fileProvider.Watch(checksums[i].Identifier)); } // We also need to create a new descriptor, because the original one doesn't have expiration tokens on // it. These will be used by the view location cache, which is like an L1 cache for views (this class is // the L2 cache). item.Descriptor = new CompiledViewDescriptor() { ExpirationTokens = item.ExpirationTokens, IsPrecompiled = true, Item = precompiledView.Item, RelativePath = precompiledView.RelativePath, ViewAttribute = precompiledView.ViewAttribute, }; return(item); }
public void IsRecompilationSupported_NoChecksums_ReturnsFalse() { // Arrange var item = new TestRazorCompiledItem(typeof(string), "mvc.1.0.view", "/Views/Home/Index.cstml", new object[] { }); // Act var result = ChecksumValidator.IsRecompilationSupported(item); // Assert Assert.False(result); }
public void IsRecompilationSupported_NoPrimaryChecksum_ReturnsFalse() { // Arrange var item = new TestRazorCompiledItem(typeof(string), "mvc.1.0.view", "/Views/Home/Index.cstml", new object[] { new RazorSourceChecksumAttribute("SHA1", GetChecksum("some import"), "/Views/Home/_ViewImports.cstml"), }); // Act var result = ChecksumValidator.IsRecompilationSupported(item); // Assert Assert.False(result); }