private async Task <SourceFileInfo?> TryGetSourceLinkFileAsync(SourceDocument sourceDocument, Encoding encoding, TelemetryMessage telemetry, bool useExtendedTimeout, CancellationToken cancellationToken)
{
if (sourceDocument.SourceLinkUrl is null || _sourceLinkService is null)
{
return(null);
}
var timeout = useExtendedTimeout ? ExtendedSourceLinkTimeout : SourceLinkTimeout;
// This should ideally be the repo-relative path to the file, and come from SourceLink: https://github.com/dotnet/sourcelink/pull/699
var relativePath = Path.GetFileName(sourceDocument.FilePath);
var delay = Task.Delay(timeout, cancellationToken);
var sourceFileTask = _sourceLinkService.Value.GetSourceFilePathAsync(sourceDocument.SourceLinkUrl, relativePath, cancellationToken);
var winner = await Task.WhenAny(sourceFileTask, delay).ConfigureAwait(false);
if (winner == sourceFileTask)
{
var sourceFile = await sourceFileTask.ConfigureAwait(false);
if (sourceFile is not null)
{
// TODO: Don't ignore the checksum here: https://github.com/dotnet/roslyn/issues/55834
var result = LoadSourceFile(sourceFile.SourceFilePath, sourceDocument, encoding, "SourceLink", ignoreChecksum: true, fromRemoteLocation: true);
if (result is not null)
{
telemetry.SetSourceFileSource("sourcelink");
_logger?.Log(FeaturesResources._0_found_via_SourceLink, sourceDocument.FilePath);
}
else
{
_logger?.Log(FeaturesResources._0_found_via_SourceLink_but_couldnt_read_file, sourceDocument.FilePath);
}
return(result);
}
else
{
telemetry.SetSourceFileSource("timeout");
_logger?.Log(FeaturesResources.Timeout_SourceLink);
}
}
return(null);
}
private SourceFileInfo?TryGetOriginalFile(SourceDocument sourceDocument, Encoding encoding, TelemetryMessage telemetry)
{
if (File.Exists(sourceDocument.FilePath))
{
var result = LoadSourceFile(sourceDocument.FilePath, sourceDocument, encoding, FeaturesResources.external, ignoreChecksum: false);
if (result is not null)
{
telemetry.SetSourceFileSource("ondisk");
_logger?.Log(FeaturesResources._0_found_in_original_location, sourceDocument.FilePath);
}
else
{
_logger?.Log(FeaturesResources._0_found_in_original_location_but_checksum_failed, sourceDocument.FilePath);
}
return(result);
}
return(null);
}
private SourceFileInfo?TryGetEmbeddedSourceFile(string tempFilePath, SourceDocument sourceDocument, Encoding encoding, TelemetryMessage telemetry)
{
if (sourceDocument.EmbeddedTextBytes is null)
{
return(null);
}
var filePath = Path.Combine(tempFilePath, Path.GetFileName(sourceDocument.FilePath));
// We might have already navigated to this file before, so it might exist, but
// we still need to re-validate the checksum and make sure its not the wrong file
if (File.Exists(filePath) &&
LoadSourceFile(filePath, sourceDocument, encoding, FeaturesResources.embedded, ignoreChecksum: false) is { } existing)
{
telemetry.SetSourceFileSource("embedded");
_logger?.Log(FeaturesResources._0_found_in_embedded_PDB_cached_source_file, sourceDocument.FilePath);
return(existing);
}
var embeddedTextBytes = sourceDocument.EmbeddedTextBytes;
var uncompressedSize = BitConverter.ToInt32(embeddedTextBytes, 0);
var stream = new MemoryStream(embeddedTextBytes, sizeof(int), embeddedTextBytes.Length - sizeof(int));
if (uncompressedSize != 0)
{
var decompressed = new MemoryStream(uncompressedSize);
using (var deflater = new DeflateStream(stream, CompressionMode.Decompress))
{
deflater.CopyTo(decompressed);
}
if (decompressed.Length != uncompressedSize)
{
return(null);
}
stream = decompressed;
}
if (stream is not null)
{
// Even though Roslyn supports loading SourceTexts from a stream, Visual Studio requires
// a file to exist on disk so we have to write embedded source to a temp file.
using (stream)
{
try
{
stream.Position = 0;
using (var file = File.OpenWrite(filePath))
{
stream.CopyTo(file);
}
new FileInfo(filePath).IsReadOnly = true;
}
catch (IOException ex)
{
_logger?.Log(FeaturesResources._0_found_in_embedded_PDB_but_could_not_write_file_1, sourceDocument.FilePath, ex.Message);
return(null);
}
}
var result = LoadSourceFile(filePath, sourceDocument, encoding, FeaturesResources.embedded, ignoreChecksum: false);
if (result is not null)
{
telemetry.SetSourceFileSource("embedded");
_logger?.Log(FeaturesResources._0_found_in_embedded_PDB, sourceDocument.FilePath);
}
else
{
_logger?.Log(FeaturesResources._0_found_in_embedded_PDB_but_checksum_failed, sourceDocument.FilePath);
}
return(result);
}
return(null);
}
