/// <summary>
/// Gets the Razor page for an input document stream. This is roughly modeled on
/// DefaultRazorPageFactory and CompilerCache. Note that we don't actually bother
/// with caching the page if it's from a live stream.
/// </summary>
private IRazorPage GetPageFromStream(IServiceProvider serviceProvider, RenderRequest request)
{
string relativePath = request.RelativePath;
if (relativePath.StartsWith("~/", StringComparison.Ordinal))
{
// For tilde slash paths, drop the leading ~ to make it work with the underlying IFileProvider.
relativePath = relativePath.Substring(1);
}
// Get the file info by combining the stream content with info found at the document's original location (if any)
IHostingEnvironment hostingEnvironment = serviceProvider.GetRequiredService <IHostingEnvironment>();
IFileInfo fileInfo = new StreamFileInfo(hostingEnvironment.WebRootFileProvider.GetFileInfo(relativePath), request.Input);
RelativeFileInfo relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
// Compute a hash for the content since pipelines could have changed it from the underlying file
// We have to pre-compute the hash (I.e., no CryptoStream) since we need to check for a hit before reading/compiling the view
byte[] hash = MD5.Create().ComputeHash(request.Input);
request.Input.Position = 0;
CompilerCacheResult compilerCacheResult = CompilePage(serviceProvider, request, hash, relativeFileInfo, relativePath);
IRazorPage result = compilerCacheResult.PageFactory();
return(result);
}
/// <summary>
/// Gets the Razor page for an input document stream. This is roughly modeled on
/// DefaultRazorPageFactory and CompilerCache. Note that we don't actually bother
/// with caching the page if it's from a live stream.
/// </summary>
private IRazorPage GetPageFromStream(
string relativePath,
string viewStartLocation,
string layoutLocation,
Stream stream,
IFileProvider rootFileProvider,
IRazorCompilationService razorCompilationService)
{
if (relativePath.StartsWith("~/", StringComparison.Ordinal))
{
// For tilde slash paths, drop the leading ~ to make it work with the underlying IFileProvider.
relativePath = relativePath.Substring(1);
}
// Get the file info by combining the stream content with info found at the document's original location (if any)
IFileInfo fileInfo = new StreamFileInfo(rootFileProvider.GetFileInfo(relativePath), stream);
RelativeFileInfo relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
// Try to get the compilation from the cache, but only if the stream is empty
// Cache key is relative path if no explicit view start or layout OR either/both of those if specified
CompilationResult compilationResult = stream.Length == 0
? _compilationCache.GetOrAdd(
viewStartLocation == null
? (layoutLocation ?? relativePath)
: (layoutLocation == null ? viewStartLocation : viewStartLocation + layoutLocation),
_ => GetCompilation(relativeFileInfo, razorCompilationService))
: GetCompilation(relativeFileInfo, razorCompilationService);
// Create and return the page
// We're not actually using the ASP.NET cache, but the CompilerCacheResult ctor contains the logic to create the page factory
CompilerCacheResult compilerCacheResult = new CompilerCacheResult(relativePath, compilationResult, Array.Empty <IChangeToken>());
return(compilerCacheResult.PageFactory());
}
/// <summary>
/// Gets the Razor page for an input document stream. This is roughly modeled on
/// DefaultRazorPageFactory and CompilerCache. Note that we don't actually bother
/// with caching the page if it's from a live stream.
/// </summary>
private IRazorPage GetPageFromStream(string relativePath, Stream stream,
IFileProvider rootFileProvider, IRazorCompilationService razorCompilationService)
{
if (relativePath.StartsWith("~/", StringComparison.Ordinal))
{
// For tilde slash paths, drop the leading ~ to make it work with the underlying IFileProvider.
relativePath = relativePath.Substring(1);
}
// Get the file info by combining the stream content with info found at the document's original location (if any)
IFileInfo fileInfo = new StreamFileInfo(rootFileProvider.GetFileInfo(relativePath), stream);
RelativeFileInfo relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
// Create the compilation
CompilationResult compilationResult = razorCompilationService.Compile(relativeFileInfo);
compilationResult.EnsureSuccessful();
// Create and return the page
// We're not actually using the cache, but the CompilerCacheResult ctor contains the logic to create the page factory
CompilerCacheResult compilerCacheResult = new CompilerCacheResult(relativePath, compilationResult, Array.Empty <IChangeToken>());
return(compilerCacheResult.PageFactory());
}
