/
digested.go
49 lines (39 loc) · 1.26 KB
/
digested.go
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// Copyright 2024 The Carvel Authors.
// SPDX-License-Identifier: Apache-2.0
package image
import (
"fmt"
"strings"
ctlconf "carvel.dev/kbld/pkg/kbld/config"
regname "github.com/google/go-containerregistry/pkg/name"
)
const digestSep = "@"
type DigestedImage struct {
nameWithDigest regname.Digest
parseErr error
}
var _ Image = DigestedImage{}
func MaybeNewDigestedImage(url string) *DigestedImage {
nameWithDigest, err := regname.NewDigest(url, regname.WeakValidation)
if err != nil {
if strings.Contains(url, digestSep) {
return &DigestedImage{nameWithDigest, fmt.Errorf("Expected valid digest reference, but found '%s', reason: %s", url, err)}
}
return nil // not a reference with digest
}
return &DigestedImage{nameWithDigest, nil}
}
func NewDigestedImageFromParts(url, digest string) DigestedImage {
ref := url + digestSep + digest
nameWithDigest, err := regname.NewDigest(ref, regname.WeakValidation)
if err != nil {
return DigestedImage{nameWithDigest, fmt.Errorf("Expected digest reference, but found '%s', reason: %s", ref, err)}
}
return DigestedImage{nameWithDigest, nil}
}
func (i DigestedImage) URL() (string, []ctlconf.Origin, error) {
if i.parseErr != nil {
return "", nil, i.parseErr
}
return i.nameWithDigest.Name(), nil, nil
}