123 lines
3.6 KiB
Go
123 lines
3.6 KiB
Go
package storage
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import (
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"fmt"
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"github.com/docker/distribution"
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ctxu "github.com/docker/distribution/context"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/manifest"
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"github.com/docker/libtrust"
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)
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type manifestStore struct {
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repository *repository
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revisionStore *revisionStore
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tagStore *tagStore
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}
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var _ distribution.ManifestService = &manifestStore{}
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func (ms *manifestStore) Exists(dgst digest.Digest) (bool, error) {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).Exists")
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return ms.revisionStore.exists(dgst)
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}
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func (ms *manifestStore) Get(dgst digest.Digest) (*manifest.SignedManifest, error) {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).Get")
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return ms.revisionStore.get(dgst)
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}
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func (ms *manifestStore) Put(manifest *manifest.SignedManifest) error {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).Put")
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// TODO(stevvooe): Add check here to see if the revision is already
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// present in the repository. If it is, we should merge the signatures, do
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// a shallow verify (or a full one, doesn't matter) and return an error
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// indicating what happened.
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// Verify the manifest.
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if err := ms.verifyManifest(manifest); err != nil {
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return err
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}
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// Store the revision of the manifest
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revision, err := ms.revisionStore.put(manifest)
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if err != nil {
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return err
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}
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// Now, tag the manifest
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return ms.tagStore.tag(manifest.Tag, revision)
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}
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// Delete removes the revision of the specified manfiest.
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func (ms *manifestStore) Delete(dgst digest.Digest) error {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).Delete - unsupported")
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return fmt.Errorf("deletion of manifests not supported")
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}
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func (ms *manifestStore) Tags() ([]string, error) {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).Tags")
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return ms.tagStore.tags()
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}
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func (ms *manifestStore) ExistsByTag(tag string) (bool, error) {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).ExistsByTag")
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return ms.tagStore.exists(tag)
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}
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func (ms *manifestStore) GetByTag(tag string) (*manifest.SignedManifest, error) {
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ctxu.GetLogger(ms.repository.ctx).Debug("(*manifestStore).GetByTag")
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dgst, err := ms.tagStore.resolve(tag)
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if err != nil {
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return nil, err
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}
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return ms.revisionStore.get(dgst)
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}
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// verifyManifest ensures that the manifest content is valid from the
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// perspective of the registry. It ensures that the signature is valid for the
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// enclosed payload. As a policy, the registry only tries to store valid
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// content, leaving trust policies of that content up to consumers.
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func (ms *manifestStore) verifyManifest(mnfst *manifest.SignedManifest) error {
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var errs distribution.ErrManifestVerification
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if mnfst.Name != ms.repository.Name() {
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// TODO(stevvooe): This needs to be an exported error
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errs = append(errs, fmt.Errorf("repository name does not match manifest name"))
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}
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if _, err := manifest.Verify(mnfst); err != nil {
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switch err {
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case libtrust.ErrMissingSignatureKey, libtrust.ErrInvalidJSONContent, libtrust.ErrMissingSignatureKey:
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errs = append(errs, distribution.ErrManifestUnverified{})
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default:
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if err.Error() == "invalid signature" { // TODO(stevvooe): This should be exported by libtrust
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errs = append(errs, distribution.ErrManifestUnverified{})
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} else {
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errs = append(errs, err)
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}
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}
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}
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for _, fsLayer := range mnfst.FSLayers {
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exists, err := ms.repository.Layers().Exists(fsLayer.BlobSum)
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if err != nil {
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errs = append(errs, err)
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}
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if !exists {
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errs = append(errs, distribution.ErrUnknownLayer{FSLayer: fsLayer})
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}
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}
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if len(errs) != 0 {
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// TODO(stevvooe): These need to be recoverable by a caller.
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return errs
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}
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return nil
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}
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