vbatts/registry
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Allow conditional fetching of manifests with the registry client.

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Add a functional argument to pass a digest to (ManifestService).GetByTag().
If the digest matches an empty manifest and nil error are returned.

See 6bedf7d1cd for server implementation.

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard Scothern 2015-07-14 16:25:37 -07:00
parent af3f674323
commit caf989a572
3 changed files with 83 additions and 18 deletions
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9
docs/storage/manifeststore.go
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@ -73,7 +73,14 @@ func (ms *manifestStore) ExistsByTag(tag string) (bool, error) {
return ms.tagStore.exists(tag)
}
func (ms *manifestStore) GetByTag(tag string) (*manifest.SignedManifest, error) {
func (ms *manifestStore) GetByTag(tag string, options ...distribution.ManifestServiceOption) (*manifest.SignedManifest, error) {
for _, option := range options {
err := option(ms)
if err != nil {
return nil, err
}
}
context.GetLogger(ms.ctx).Debug("(*manifestStore).GetByTag")
dgst, err := ms.tagStore.resolve(tag)
if err != nil {