Created
November 23, 2021 15:15
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| package main | |
| import ( | |
| "errors" | |
| "fmt" | |
| "io" | |
| "os" | |
| "github.com/google/go-containerregistry/pkg/authn" | |
| "github.com/google/go-containerregistry/pkg/name" | |
| v1 "github.com/google/go-containerregistry/pkg/v1" | |
| "github.com/google/go-containerregistry/pkg/v1/mutate" | |
| "github.com/google/go-containerregistry/pkg/v1/remote" | |
| ) | |
| func main() { | |
| if len(os.Args) != 2 { | |
| fmt.Println("usage: tmp image") | |
| os.Exit(1) | |
| } | |
| image := os.Args[1] | |
| ref, err := name.ParseReference(image) | |
| if err != nil { | |
| fmt.Println("Cannot parse image name %s: ", image, err) | |
| os.Exit(1) | |
| } | |
| auth := remote.WithAuthFromKeychain(authn.DefaultKeychain) | |
| desc, err := remote.Get(ref, auth) | |
| if err != nil { | |
| fmt.Println("Cannot access remote index: ", err) | |
| os.Exit(1) | |
| } | |
| idx, err := desc.ImageIndex() | |
| if err != nil { | |
| fmt.Println("This program expects an index not a plain image, sorry: ", err) | |
| os.Exit(1) | |
| } | |
| annotations := map[string]string{"test": "value"} | |
| newIdx := mutate.Annotations(idx, annotations).(v1.ImageIndex) | |
| ch := make(chan v1.Update, 100) | |
| go func() { | |
| _ = remote.WriteIndex(ref, newIdx, auth, remote.WithProgress(ch)) | |
| }() | |
| for update := range ch { | |
| switch { | |
| case update.Error != nil && errors.Is(update.Error, io.EOF): | |
| fmt.Fprintf(os.Stderr, "receive error message: %v\n", err) | |
| fmt.Printf("%d/%d", update.Complete, update.Total) | |
| break | |
| case update.Error != nil: | |
| fmt.Printf("error writing tarball: %v\n", update.Error) | |
| os.Exit(1) | |
| default: | |
| fmt.Fprintf(os.Stderr, "receive update: %#v\n", update) | |
| } | |
| } | |
| } |
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