[19.03] vendor: update buildkit to f5a55a95

builder/builder-next/exporter/writer.go

@@ -137,6 +137,37 @@ func normalizeLayersAndHistory(diffs []digest.Digest, history []ocispec.History,
 		history[i] = h
 	}
 
+	// Find the first new layer time. Otherwise, the history item for a first
+	// metadata command would be the creation time of a base image layer.
+	// If there is no such then the last layer with timestamp.
+	var created *time.Time
+	var noCreatedTime bool
+	for _, h := range history {
+		if h.Created != nil {
+			created = h.Created
+			if noCreatedTime {
+				break
+			}
+		} else {
+			noCreatedTime = true
+		}
+	}
+
+	// Fill in created times for all history items to be either the first new
+	// layer time or the previous layer.
+	noCreatedTime = false
+	for i, h := range history {
+		if h.Created != nil {
+			if noCreatedTime {
+				created = h.Created
+			}
+		} else {
+			noCreatedTime = true
+			h.Created = created
+		}
+		history[i] = h
+	}
+
 	return diffs, history
 }
 

builder/builder-next/worker/worker.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	nethttp "net/http"
 	"runtime"
+	"strings"
 	"time"
 
 	"github.com/containerd/containerd/content"
@@ -43,6 +44,7 @@ import (
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
+	bolt "go.etcd.io/bbolt"
 )
 
 const labelCreatedAt = "buildkit/createdat"
@@ -257,6 +259,47 @@ func (w *Worker) GetRemote(ctx context.Context, ref cache.ImmutableRef, createIf
 	}, nil
 }
 
+// PruneCacheMounts removes the current cache snapshots for specified IDs
+func (w *Worker) PruneCacheMounts(ctx context.Context, ids []string) error {
+	mu := ops.CacheMountsLocker()
+	mu.Lock()
+	defer mu.Unlock()
+
+	for _, id := range ids {
+		id = "cache-dir:" + id
+		sis, err := w.MetadataStore.Search(id)
+		if err != nil {
+			return err
+		}
+		for _, si := range sis {
+			for _, k := range si.Indexes() {
+				if k == id || strings.HasPrefix(k, id+":") {
+					if siCached := w.CacheManager.Metadata(si.ID()); siCached != nil {
+						si = siCached
+					}
+					if err := cache.CachePolicyDefault(si); err != nil {
+						return err
+					}
+					si.Queue(func(b *bolt.Bucket) error {
+						return si.SetValue(b, k, nil)
+					})
+					if err := si.Commit(); err != nil {
+						return err
+					}
+					// if ref is unused try to clean it up right away by releasing it
+					if mref, err := w.CacheManager.GetMutable(ctx, si.ID()); err == nil {
+						go mref.Release(context.TODO())
+					}
+					break
+				}
+			}
+		}
+	}
+
+	ops.ClearActiveCacheMounts()
+	return nil
+}
+
 // FromRemote converts a remote snapshot reference to a local one
 func (w *Worker) FromRemote(ctx context.Context, remote *solver.Remote) (cache.ImmutableRef, error) {
 	rootfs, err := getLayers(ctx, remote.Descriptors)

vendor.conf

@@ -27,7 +27,7 @@ github.com/imdario/mergo                            7c29201646fa3de8506f70121347
 golang.org/x/sync                                   e225da77a7e68af35c70ccbf71af2b83e6acac3c
 
 # buildkit
-github.com/moby/buildkit                            1f89ec125f84c097bdf3a063be622c4238dba5f8
+github.com/moby/buildkit                            f5a55a9516d1c6e2ade9bec22b83259caeed3a84 
 github.com/tonistiigi/fsutil                        3bbb99cdbd76619ab717299830c60f6f2a533a6b
 github.com/grpc-ecosystem/grpc-opentracing          8e809c8a86450a29b90dcc9efbf062d0fe6d9746
 github.com/opentracing/opentracing-go               1361b9cd60be79c4c3a7fa9841b3c132e40066a7