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C# POC: Add binary log based extraction #16581

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tamasvajk
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@github-actions github-actions bot added the C# label May 23, 2024
Comment on lines +119 to +123
catch (Exception ex) // lgtm[cs/catch-of-all-exceptions]
{
logger.Log(Severity.Error, " Unhandled exception: {0}", ex);
return ExitCode.Errors;
}

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Code scanning / CodeQL

Generic catch clause Note

Generic catch clause.
public BinaryLogExtractor(string cwd, string[] args, string outputPath, ILogger logger, PathTransformer pathTransformer, CommonOptions options)
: base(cwd, args, outputPath, [], logger, pathTransformer)
{
Mode = ExtractorMode.BinaryLog;

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Code scanning / CodeQL

Virtual call in constructor or destructor Warning

Avoid virtual calls in a constructor or destructor.
Mode = ExtractorMode.BinaryLog;
if (options.QlTest)
{
Mode |= ExtractorMode.QlTest;

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Code scanning / CodeQL

Virtual call in constructor or destructor Warning

Avoid virtual calls in a constructor or destructor.
@@ -115,29 +185,28 @@ function RegisterExtractorPack(id)
end
end
if match then
local injections = { '-p:UseSharedCompilation=false', '-p:EmitCompilerGeneratedFiles=true' }
-- TODO: Add real temporary file name
local injections = { '-bl:codeql_' .. RandomString(15) .. '.binlog' }
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Passing -bl to dotnet run doesn't seem to do anything, but it makes the extractor fail due to the non existent binlog file.

@tamasvajk
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DCA test results don't look good. We're losing a lot of alerts.

@@ -1,10 +1,28 @@
function RegisterExtractorPack(id)
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Another approach would be running the database creation without any command, so running the autobuilder, but with a new extractor option specifying the binlog path. And then the autobuilder could start the extractor with the given path.

Comment on lines +13 to +20
if (builder.Options.Binlog is string binlog)
{
return BuildScript.Create(_ => Semmle.Extraction.CSharp.Driver.Main(["--binlog", binlog]));
}
else
{
return BuildScript.Create(_ => Semmle.Extraction.CSharp.Standalone.Program.Main([]));
}

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Code scanning / CodeQL

Missed ternary opportunity Note

Both branches of this 'if' statement return - consider using '?' to express intent better.
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