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tag_resolve.go
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tag_resolve.go
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// Copyright 2020 VMware, Inc.
// SPDX-License-Identifier: Apache-2.0
package cmd
import (
"fmt"
"carvel.dev/imgpkg/pkg/imgpkg/registry"
"github.com/cppforlife/go-cli-ui/ui"
regname "github.com/google/go-containerregistry/pkg/name"
"github.com/spf13/cobra"
)
type TagResolveOptions struct {
ui ui.UI
ImageFlags ImageFlags
RegistryFlags RegistryFlags
}
func NewTagResolveOptions(ui ui.UI) *TagResolveOptions {
return &TagResolveOptions{ui: ui}
}
func NewTagResolveCmd(o *TagResolveOptions) *cobra.Command {
cmd := &cobra.Command{
Use: "resolve",
Short: "Resolve tag to digest for image",
RunE: func(_ *cobra.Command, _ []string) error { return o.Run() },
}
o.ImageFlags.Set(cmd)
o.RegistryFlags.Set(cmd)
return cmd
}
func (t *TagResolveOptions) Run() error {
reg, err := registry.NewSimpleRegistry(t.RegistryFlags.AsRegistryOpts())
if err != nil {
return err
}
ref, err := regname.ParseReference(t.ImageFlags.Image, regname.WeakValidation)
if err != nil {
return err
}
digest, err := reg.Digest(ref)
if err != nil {
return err
}
t.ui.PrintBlock([]byte(fmt.Sprintf("%s@%s", ref.Context(), digest.String())))
return nil
}