vendor: update buildkit to master@ae9d0f5

Signed-off-by: Justin Chadwell <me@jedevc.com>

vendor/github.com/moby/buildkit/util/contentutil/buffer.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"io"
+	"strings"
 	"sync"
 	"time"
 
@@ -18,12 +19,14 @@ import (
 type Buffer interface {
 	content.Provider
 	content.Ingester
+	content.Manager
 }
 
 // NewBuffer returns a new buffer
 func NewBuffer() Buffer {
 	return &buffer{
 		buffers: map[digest.Digest][]byte{},
+		infos:   map[digest.Digest]content.Info{},
 		refs:    map[string]struct{}{},
 	}
 }
@@ -31,9 +34,59 @@ func NewBuffer() Buffer {
 type buffer struct {
 	mu      sync.Mutex
 	buffers map[digest.Digest][]byte
+	infos   map[digest.Digest]content.Info
 	refs    map[string]struct{}
 }
 
+func (b *buffer) Info(ctx context.Context, dgst digest.Digest) (content.Info, error) {
+	b.mu.Lock()
+	v, ok := b.infos[dgst]
+	b.mu.Unlock()
+	if !ok {
+		return content.Info{}, errdefs.ErrNotFound
+	}
+	return v, nil
+}
+
+func (b *buffer) Update(ctx context.Context, new content.Info, fieldpaths ...string) (content.Info, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	updated, ok := b.infos[new.Digest]
+	if !ok {
+		return content.Info{}, errdefs.ErrNotFound
+	}
+
+	if len(fieldpaths) == 0 {
+		fieldpaths = []string{"labels"}
+	}
+
+	for _, path := range fieldpaths {
+		if strings.HasPrefix(path, "labels.") {
+			if updated.Labels == nil {
+				updated.Labels = map[string]string{}
+			}
+			key := strings.TrimPrefix(path, "labels.")
+			updated.Labels[key] = new.Labels[key]
+			continue
+		}
+		if path == "labels" {
+			updated.Labels = new.Labels
+		}
+	}
+
+	b.infos[new.Digest] = updated
+	return updated, nil
+}
+
+func (b *buffer) Walk(ctx context.Context, fn content.WalkFunc, filters ...string) error {
+	return nil // not implemented
+}
+
+func (b *buffer) Delete(ctx context.Context, dgst digest.Digest) error {
+	return nil // not implemented
+}
+
 func (b *buffer) Writer(ctx context.Context, opts ...content.WriterOpt) (content.Writer, error) {
 	var wOpts content.WriterOpts
 	for _, opt := range opts {
@@ -82,6 +135,7 @@ func (b *buffer) addValue(k digest.Digest, dt []byte) {
 	b.mu.Lock()
 	defer b.mu.Unlock()
 	b.buffers[k] = dt
+	b.infos[k] = content.Info{Digest: k, Size: int64(len(dt))}
 }
 
 type bufferedWriter struct {

vendor/github.com/moby/buildkit/util/contentutil/source.go

@@ -0,0 +1,34 @@
+package contentutil
+
+import (
+	"net/url"
+	"strings"
+
+	"github.com/containerd/containerd/content"
+	"github.com/containerd/containerd/reference"
+)
+
+func HasSource(info content.Info, refspec reference.Spec) (bool, error) {
+	u, err := url.Parse("dummy://" + refspec.Locator)
+	if err != nil {
+		return false, err
+	}
+
+	if info.Labels == nil {
+		return false, nil
+	}
+
+	source, target := u.Hostname(), strings.TrimPrefix(u.Path, "/")
+	repoLabel, ok := info.Labels["containerd.io/distribution.source."+source]
+	if !ok || repoLabel == "" {
+		return false, nil
+	}
+
+	for _, repo := range strings.Split(repoLabel, ",") {
+		// the target repo is not a candidate
+		if repo == target {
+			return true, nil
+		}
+	}
+	return false, nil
+}