Adding new language, how to get the metrics to work

SonarQube Server / Community Build Plugin Development
1

Hello there,

I am currently working on adding a new language to SonarQube. I got some rules to work, but the metriks arent working.

Now on the project there is shown that there are 127 lines duplicated. But the Duplication line density is still 0%. Well the number is wrong but I at least expected that the value of the duplication line densitiy would change.

So I want to know, what am I missing?

I am currently using SonarQube 9.8 for testing with the embedded database.
Also I am developing the plugin using ANTLR4 instead of SSLR.

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3

I am using the Sonar-plugin-api 9.8.0.203. I also noticed that when using the .gap function when creating a NewIssue, nothing changes. There is no added technical debt, just nothing.

4

Hi,

The screenshot in your OP isn’t showing you that there are 127 duplicated lines, but that 127 lines, total, were found. Since duplication is calculated server-side, IIRC, you’d be better off focusing on other metrics.

You should take a look at some of the open source language analyzers, maybe the Rust plugin, to get an idea of how to calculate metrics.

 
HTH,
Ann

5

Hi,

thanks for the answer! The Rust plugin was easier to understand than the flex plugin I was looking at earlier.

It really helped!

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