Expose git source repo URL in pipelinerun annotations

[MartinBasti]

When a PR is created from fork, there is no annotation that would show source repo URL and it's hard to identify which fork was used.

There is {{source_url}} variable in PLR definition, would be nice if the source_url is automatically recorded in annotations. The same for source_branch

[chmouel]

SGTM

cc @enarha

[MartinBasti]

if it's a good first issue I can try to contribute :)

[enarha]

You can add the annotation. This worked for me https://github.com/enarha/actions/pull/43/files . The annotation was created on the PipelineRun.

[MartinBasti]

My service needs that context, I don't want to tell every user to do manual updates in PLR, when PAC has this information.

[enarha]

We have two options IMO here. The one I like less is to expose some or all of those dynamic variables by using configuration of what to be exposed which will either make the configuration more complex or expose too much information (if we expose all vars with single configuration option). The second option which I like more is by using some form of global pipelinerun configuration similar to the global repository settings (https://pipelinesascode.com/docs/install/global_repositories_setting/#pipelines-as-code-global-repository-settings). Neither of these is as easy as just exposing a single var, but it's the right thing to do IMO.

[enarha]

On a system I have access to it looks like we already expose 23 annotations, so maybe not a big issue to just add one more.