Public registry proxy not getting the latest Chart versions anymore?

[PoliM]

Hello everybody

Thanks for the proxy - great idea :-) I was using the public registry proxy and just wanted to update an Argo CD deployment when I found, that the registry does not have the latest Charts available (I know this might not be the right place to ask, but I didn't see another way to get in touch with you - sorry about that).

When I do helm fetch oci://chartproxy.container-registry.com/argoproj.github.io/argo-helm/argo-cd it downloads the version 5.42.1 even though the latest is 5.45.0
So I tried helm fetch oci://chartproxy.container-registry.com/argoproj.github.io/argo-helm/argo-cd --version 5.45.0 and it returns "Error: chartproxy.container-registry.com/argoproj.github.io/argo-helm/argo-cd:5.45.0: not found".

I checked the tag list here https://chartproxy.container-registry.com/v2/argoproj.github.io/argo-helm/argo-cd/tags/list and it is not listed.

Maybe you could give it a nudge? Anyway, thanks again for the service.

[Vad1mo]

I restarted the service. and that latest indey.yaml is now fetched.
We do cache the upstream index.yaml file, but it seems there is a timing issue, or that a new index.yaml file is fetched on a 404.

This seems to be a bug to me.

maybe @tpoxa can look into that.

[PoliM]

Wow, that was quick, thanks a lot :-)

[jonasrutishauser]

It seems that it is out of date again.

[PoliM]

I was looking through the code and it seems that the index.yaml gets cached for a very very long time.

helm-charts-oci-proxy/registry/manifest/charts.go

Lines 239 to 244 in c564416

	res.c, res.err = m.download(url)
	if res.err != nil {
	m.indexCache.SetWithTTL(url, res, 10, time.Second*5)
	} else {
	m.indexCache.Set(url, res, 10)
	}

I'm not a 100% sure but I think this is what happens: the total cache cost is set to 100 million (somewhere in serve.go) and each index.yaml costs 10. So, unless we fetch a 10 million different registries nothing will get thrown out because in the success case there is no TTL.

There is no info about contributing (or I haven't found it), so this is just for your information.