Update gomod and vendor

vendor/github.com/moby/buildkit/cache/remotecache/inline/inline.go

@@ -0,0 +1,106 @@
+package registry
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/moby/buildkit/cache/remotecache"
+	v1 "github.com/moby/buildkit/cache/remotecache/v1"
+	"github.com/moby/buildkit/solver"
+	digest "github.com/opencontainers/go-digest"
+	"github.com/sirupsen/logrus"
+)
+
+func ResolveCacheExporterFunc() remotecache.ResolveCacheExporterFunc {
+	return func(ctx context.Context, _ map[string]string) (remotecache.Exporter, error) {
+		return NewExporter(), nil
+	}
+}
+
+func NewExporter() remotecache.Exporter {
+	cc := v1.NewCacheChains()
+	return &exporter{CacheExporterTarget: cc, chains: cc}
+}
+
+type exporter struct {
+	solver.CacheExporterTarget
+	chains *v1.CacheChains
+}
+
+func (ce *exporter) Finalize(ctx context.Context) (map[string]string, error) {
+	return nil, nil
+}
+
+func (ce *exporter) reset() {
+	cc := v1.NewCacheChains()
+	ce.CacheExporterTarget = cc
+	ce.chains = cc
+}
+
+func (ce *exporter) ExportForLayers(layers []digest.Digest) ([]byte, error) {
+	config, descs, err := ce.chains.Marshal()
+	if err != nil {
+		return nil, err
+	}
+
+	descs2 := map[digest.Digest]v1.DescriptorProviderPair{}
+	for _, k := range layers {
+		if v, ok := descs[k]; ok {
+			descs2[k] = v
+			continue
+		}
+		// fallback for uncompressed digests
+		for _, v := range descs {
+			if uc := v.Descriptor.Annotations["containerd.io/uncompressed"]; uc == string(k) {
+				descs2[v.Descriptor.Digest] = v
+			}
+		}
+	}
+
+	cc := v1.NewCacheChains()
+	if err := v1.ParseConfig(*config, descs2, cc); err != nil {
+		return nil, err
+	}
+
+	cfg, _, err := cc.Marshal()
+	if err != nil {
+		return nil, err
+	}
+
+	if len(cfg.Layers) == 0 {
+		logrus.Warn("failed to match any cache with layers")
+		return nil, nil
+	}
+
+	cache := map[int]int{}
+
+	// reorder layers based on the order in the image
+	for i, r := range cfg.Records {
+		for j, rr := range r.Results {
+			n := getSortedLayerIndex(rr.LayerIndex, cfg.Layers, cache)
+			rr.LayerIndex = n
+			r.Results[j] = rr
+			cfg.Records[i] = r
+		}
+	}
+
+	dt, err := json.Marshal(cfg.Records)
+	if err != nil {
+		return nil, err
+	}
+	ce.reset()
+
+	return dt, nil
+}
+
+func getSortedLayerIndex(idx int, layers []v1.CacheLayer, cache map[int]int) int {
+	if idx == -1 {
+		return -1
+	}
+	l := layers[idx]
+	if i, ok := cache[idx]; ok {
+		return i
+	}
+	cache[idx] = getSortedLayerIndex(l.ParentIndex, layers, cache) + 1
+	return cache[idx]
+}