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/*
* Copyright (c) 2023. Nydus Developers. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*/
package filesystem
import (
"context"
"fmt"
snpkg "github.com/containerd/containerd/pkg/snapshotters"
"github.com/opencontainers/go-digest"
"github.com/pkg/errors"
)
func (fs *Filesystem) ReferrerDetectEnabled() bool {
return fs.referrerMgr != nil
}
func (fs *Filesystem) CheckReferrer(ctx context.Context, labels map[string]string) bool {
if !fs.ReferrerDetectEnabled() {
return false
}
ref, ok := labels[snpkg.TargetRefLabel]
if !ok {
return false
}
manifestDigest := digest.Digest(labels[snpkg.TargetManifestDigestLabel])
if manifestDigest.Validate() != nil {
return false
}
if _, err := fs.referrerMgr.CheckReferrer(ctx, ref, manifestDigest); err != nil {
return false
}
return true
}
func (fs *Filesystem) TryFetchMetadata(ctx context.Context, labels map[string]string, metadataPath string) error {
ref, ok := labels[snpkg.TargetRefLabel]
if !ok {
return fmt.Errorf("empty label %s", snpkg.TargetRefLabel)
}
manifestDigest := digest.Digest(labels[snpkg.TargetManifestDigestLabel])
if err := manifestDigest.Validate(); err != nil {
return fmt.Errorf("invalid label %s=%s", snpkg.TargetManifestDigestLabel, manifestDigest)
}
if err := fs.referrerMgr.TryFetchMetadata(ctx, ref, manifestDigest, metadataPath); err != nil {
return errors.Wrap(err, "try fetch metadata")
}
return nil
}
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