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Enable proxying registries to downgrade fetched manifests to Schema 1.

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Ensure Accept headers are sent with TagService.Get (which hits manifest
endpoints).  Add support for remote Get and Put for the proxied blobstore.

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard Scothern 2016-02-17 16:32:23 -08:00
parent db7411ff2e
commit 29e0411f00
3 changed files with 77 additions and 7 deletions
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26
docs/proxy/proxyblobstore.go
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@ -174,6 +174,28 @@ func (pbs *proxyBlobStore) Stat(ctx context.Context, dgst digest.Digest) (distri
return pbs.remoteStore.Stat(ctx, dgst)
}
func (pbs *proxyBlobStore) Get(ctx context.Context, dgst digest.Digest) ([]byte, error) {
blob, err := pbs.localStore.Get(ctx, dgst)
if err == nil {
return blob, nil
}
if err := pbs.authChallenger.tryEstablishChallenges(ctx); err != nil {
return []byte{}, err
}
blob, err = pbs.remoteStore.Get(ctx, dgst)
if err != nil {
return []byte{}, err
}
_, err = pbs.localStore.Put(ctx, "", blob)
if err != nil {
return []byte{}, err
}
return blob, nil
}
// Unsupported functions
func (pbs *proxyBlobStore) Put(ctx context.Context, mediaType string, p []byte) (distribution.Descriptor, error) {
return distribution.Descriptor{}, distribution.ErrUnsupported
@ -195,10 +217,6 @@ func (pbs *proxyBlobStore) Open(ctx context.Context, dgst digest.Digest) (distri
return nil, distribution.ErrUnsupported
}
func (pbs *proxyBlobStore) Get(ctx context.Context, dgst digest.Digest) ([]byte, error) {
return nil, distribution.ErrUnsupported
}
func (pbs *proxyBlobStore) Delete(ctx context.Context, dgst digest.Digest) error {
return distribution.ErrUnsupported
}