Add pull_count to artifact

[fenuks]

Is your feature request related to a problem? Please describe.
I want to write some script to delete unneeded artifacts/images. Currently
harbor for artifacts only exposes pull_time, and I would like to remove
artifacts that haven't been downloaded in long time and have few downloads.

Describe the solution you'd like
Add pull_count to Artifact. pull_count is already present in Repository, but repository can contain many artifacts.

[Vad1mo]

isn't it on the api level different?

[fenuks]

I'm sorry, but I'm not sure what do you mean.

[stonezdj]

The pull_count is a cumulative value, can not indicate where this image is used or not now. maybe the pull time is more accurate.

[fenuks]

Yes, but I can make stronger assumption that image is unused if it hasn't been pulled in, say, one year with only few pulls, compared to artifact that hasn't been pulled in the same time, but has few hundred pulls. In second case it is much more likely that image is still used somewhere.

[bupd]

isn't it on the api level different?

No, we don't have it on the API level. I think we collect this metric only on repo level and not on the artifact level.