forked from moby/buildkit
/
refs.go
57 lines (47 loc) · 1.26 KB
/
refs.go
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package contentutil
import (
"context"
"net/http"
"github.com/containerd/containerd/content"
"github.com/containerd/containerd/remotes"
"github.com/containerd/containerd/remotes/docker"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
func ProviderFromRef(ref string) (ocispec.Descriptor, content.Provider, error) {
remote := docker.NewResolver(docker.ResolverOptions{
Client: http.DefaultClient,
})
name, desc, err := remote.Resolve(context.TODO(), ref)
if err != nil {
return ocispec.Descriptor{}, nil, err
}
fetcher, err := remote.Fetcher(context.TODO(), name)
if err != nil {
return ocispec.Descriptor{}, nil, err
}
return desc, FromFetcher(fetcher), nil
}
func IngesterFromRef(ref string) (content.Ingester, error) {
remote := docker.NewResolver(docker.ResolverOptions{
Client: http.DefaultClient,
})
pusher, err := remote.Pusher(context.TODO(), ref)
if err != nil {
return nil, err
}
return &ingester{
pusher: pusher,
}, nil
}
type ingester struct {
pusher remotes.Pusher
}
func (w *ingester) Writer(ctx context.Context, opts ...content.WriterOpt) (content.Writer, error) {
var wo content.WriterOpts
for _, o := range opts {
if err := o(&wo); err != nil {
return nil, err
}
}
return w.pusher.Push(ctx, wo.Desc)
}