gitlab_ci_pipeline_time_since_last_run_seconds not updated, when ref was deleted

[krebs-GVL]

Hi,

This may be the same as #119
I realized, that gitlab_ci_pipeline_time_since_last_run_seconds will not get updated for merge request pipelines, if the merge request was deleted. I expect, that this also happens with branch refs.

I can only provide a screenshot from a custom dashboard

It is sorted by ID, so the most recent is on top. The eternal branches develop and master shows the correct values, but the merge request refs shows the exact time it took from pipeline completion to merge/delete.

Maybe a timestamp instead of a duration is more reliable?

[mvisonneau]

👋 hey @krebs-GVL, indeed, this is something that I wanted to do for a while, I just pushed it as part of a broader metric naming update (26ddfe8). It will be part the next release. You will therefore be able to use time() - gitlab_ci_pipeline_timestamp to compute the value dynamically in prometheus.

[mvisonneau]

These changes are part of the 0.4.0 release!