Cannot Resolve descriptor: 404 not found while oras blob fetch does find it
#823
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Skarlso
changed the title
oras blob fetch does find itoras blob fetch does find it
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Doing it in code yields the same result: repo, err := remote.NewRepository("ghcr.io/open-component-model/mpas-bootstrap-component/fluxcd/notification-controller")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
desc, err := repo.Resolve(context.Background(), "sha256:2e3521c3642113452b802980672e7c4846c3f1069c5067c569d2bd64c7552764")
if err != nil {
fmt.Println("failed to resolve descriptor ", err)
os.Exit(1)
}
fmt.Println(desc.Digest)Fails too. |
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That's weird, I know just noticed that the SHA is in fact not under the listed layers. But then what the heck is it fetching when using this sha? :D :D :D What's going on here? |
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okay, I think I'm getting the wrong SHA somehow in my code. :/ This works: func main() {
repo, err := remote.NewRepository("ghcr.io/open-component-model/mpas-bootstrap-component/fluxcd/notification-controller")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
desc, err := repo.Resolve(context.Background(), "v1.3.0")
if err != nil {
fmt.Println("failed to resolve descriptor ", err)
}
fmt.Println(desc.Digest)
}Looks like, this will get the right thing. |
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Hi @Skarlso,
To resolve a layer, you would need to explicitly specify the blob path by invoking repo, err := remote.NewRepository("ghcr.io/open-component-model/mpas-bootstrap-component/fluxcd/notification-controller")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
- desc, err := repo.Resolve(context.Background(), "sha256:2e3521c3642113452b802980672e7c4846c3f1069c5067c569d2bd64c7552764")
+ desc, err := repo.Blobs().Resolve(context.Background(), "sha256:2e3521c3642113452b802980672e7c4846c3f1069c5067c569d2bd64c7552764")
if err != nil {
fmt.Println("failed to resolve descriptor ", err)
os.Exit(1)
}
fmt.Println(desc.Digest) |
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OMG THAT WORKED. :D Hum, I need to redesign things 🤔 Check out if I do fetch the right thing. But thanks, this really helped me go further. :) Thank you again :DDDD <3 |
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@Skarlso No problem. Good luck! 😀 |
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I might need to read up on how OCI layers are structured better, but... could you help me out one last time, or point me to a doc where it makes a bit more sense so I structure my code better please? :) The question is, when do I use repos Resolve vs Blob.Resolve? :D |
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Ah, so one lists blobs, and the other lists ManifestMediaTypes. So to list tags and such, I can use the repo Resolver to fetch things, but the actually get the blob data, I need to use |
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@Skarlso The image-spec and the distribution-spec are what ORAS is following and are the source of truth.
Generally the API doc should help (just read it, LOL). But the pattern is that:
BTW, welcome to join the |
Not really, But it does not harm to explicitly specify the path if you know what you want.
We would love to hear feedback on |
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Ah thank you so much for the information!! That is a lot that can help here! :) Thank you! :) ❤️ ❤️ |
Basically what the title says.
I'm trying to resolve a layer like this but getting not found:
Yet when I run oras blob fetch, it's clearly there:
What am I doing wrong?
This is the manifest layer of that repo:
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