Sounds like a useful feature. But Prometheus does not support string metrics and adding version string as a label does not sound like a good idea.

Maybe we should convert semver to an integer e.g. 1.15.9 = 1 * 100^2 + 15 * 100 + 9 = 11509

@Flygrounder that's a good suggestion, although I'm not sure it'd work in all cases, as there are occasions when the version wouldn't always be in a format that could be converted so cleanly, ex v1.16.0-dev-796-gd228d346c

But this is only the case with dev versions, for which you probably do not want to get alerts because they are constantly updated. Perhaps in that case reporting 11600 would be fine.

I think we had better keep the original version format, and just use a new field like updateAvailable to indicate that there is a new update. Converting a version string to an (big) integer may introduce new problems.

To be clear, I was talking only about converting semver to an integer in Prometheus metrics, not for the entire project.

Additional benefit of having version metric in contrast to updateAvailable is that you can correlate other metrics to the specific Gitea version and see how well each version performs.

If you've just gotten a notification about my PR, I regret to inform you that I am being forced to make my PR as part of an academic assignment. I will be closing it after the assignment has been submitted, unless for some reason this is deemed an acceptable fix.