update vendor

Signed-off-by: Anda Xu <anda.xu@docker.com>
(cherry picked from commit 54b3af4c7d7d625b9cff6d5d7b8730ec99f38977)

builder/builder-next/worker/worker.go

@@ -46,6 +46,7 @@ import (
 type Opt struct {
 	ID                string
 	Labels            map[string]string
+	GCPolicy          []client.PruneInfo
 	SessionManager    *session.Manager
 	MetadataStore     *metadata.Store
 	Executor          executor.Executor
@@ -130,6 +131,11 @@ func (w *Worker) Platforms() []ocispec.Platform {
 	return []ocispec.Platform{platforms.DefaultSpec()}
 }
 
+// GCPolicy returns automatic GC Policy
+func (w *Worker) GCPolicy() []client.PruneInfo {
+	return w.Opt.GCPolicy
+}
+
 // LoadRef loads a reference by ID
 func (w *Worker) LoadRef(id string) (cache.ImmutableRef, error) {
 	return w.CacheManager.Get(context.TODO(), id)
@@ -176,8 +182,8 @@ func (w *Worker) DiskUsage(ctx context.Context, opt client.DiskUsageInfo) ([]*cl
 }
 
 // Prune deletes reclaimable build cache
-func (w *Worker) Prune(ctx context.Context, ch chan client.UsageInfo, info client.PruneInfo) error {
-	return w.CacheManager.Prune(ctx, ch, info)
+func (w *Worker) Prune(ctx context.Context, ch chan client.UsageInfo, info ...client.PruneInfo) error {
+	return w.CacheManager.Prune(ctx, ch, info...)
 }
 
 // Exporter returns exporter by name

cmd/dockerd/daemon.go

@@ -259,7 +259,7 @@ type routerOptions struct {
 	cluster        *cluster.Cluster
 }
 
-func newRouterOptions(config *config.Config, daemon *daemon.Daemon) (routerOptions, error) {
+func newRouterOptions(config *config.Config, d *daemon.Daemon) (routerOptions, error) {
 	opts := routerOptions{}
 	sm, err := session.NewManager()
 	if err != nil {
@@ -280,7 +280,7 @@ func newRouterOptions(config *config.Config, daemon *daemon.Daemon) (routerOptio
 		return opts, errors.Wrap(err, "failed to create fscache")
 	}
 
-	manager, err := dockerfile.NewBuildManager(daemon.BuilderBackend(), sm, buildCache, daemon.IdentityMapping())
+	manager, err := dockerfile.NewBuildManager(d.BuilderBackend(), sm, buildCache, d.IdentityMapping())
 	if err != nil {
 		return opts, err
 	}
@@ -298,15 +298,15 @@ func newRouterOptions(config *config.Config, daemon *daemon.Daemon) (routerOptio
 	bk, err := buildkit.New(buildkit.Opt{
 		SessionManager:      sm,
 		Root:                filepath.Join(config.Root, "buildkit"),
-		Dist:                daemon.DistributionServices(),
-		NetworkController:   daemon.NetworkController(),
+		Dist:                d.DistributionServices(),
+		NetworkController:   d.NetworkController(),
 		DefaultCgroupParent: cgroupParent,
 	})
 	if err != nil {
 		return opts, err
 	}
 
-	bb, err := buildbackend.NewBackend(daemon.ImageService(), manager, buildCache, bk)
+	bb, err := buildbackend.NewBackend(d.ImageService(), manager, buildCache, bk)
 	if err != nil {
 		return opts, errors.Wrap(err, "failed to create buildmanager")
 	}
@@ -315,8 +315,8 @@ func newRouterOptions(config *config.Config, daemon *daemon.Daemon) (routerOptio
 		buildBackend:   bb,
 		buildCache:     buildCache,
 		buildkit:       bk,
-		features:       daemon.Features(),
-		daemon:         daemon,
+		features:       d.Features(),
+		daemon:         d,
 	}, nil
 }
 

vendor.conf

@@ -26,7 +26,7 @@ github.com/imdario/mergo v0.3.6
 golang.org/x/sync 1d60e4601c6fd243af51cc01ddf169918a5407ca
 
 # buildkit
-github.com/moby/buildkit 6812dac65e0440bb75affce1fb2175e640edc15d
+github.com/moby/buildkit a9fe50acf16dd05d1f9877b27068884543ad7a1f
 github.com/tonistiigi/fsutil b19464cd1b6a00773b4f2eb7acf9c30426f9df42
 github.com/grpc-ecosystem/grpc-opentracing 8e809c8a86450a29b90dcc9efbf062d0fe6d9746
 github.com/opentracing/opentracing-go 1361b9cd60be79c4c3a7fa9841b3c132e40066a7

vendor/github.com/moby/buildkit/api/types/worker.pb.go

@@ -9,6 +9,7 @@
 
 	It has these top-level messages:
 		WorkerRecord
+		GCPolicy
 */
 package moby_buildkit_v1_types
 
@@ -35,6 +36,7 @@ type WorkerRecord struct {
 	ID        string            `protobuf:"bytes,1,opt,name=ID,proto3" json:"ID,omitempty"`
 	Labels    map[string]string `protobuf:"bytes,2,rep,name=Labels" json:"Labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Platforms []pb.Platform     `protobuf:"bytes,3,rep,name=platforms" json:"platforms"`
+	GCPolicy  []*GCPolicy       `protobuf:"bytes,4,rep,name=GCPolicy" json:"GCPolicy,omitempty"`
 }
 
 func (m *WorkerRecord) Reset()                    { *m = WorkerRecord{} }
@@ -63,8 +65,56 @@ func (m *WorkerRecord) GetPlatforms() []pb.Platform {
 	return nil
 }
 
+func (m *WorkerRecord) GetGCPolicy() []*GCPolicy {
+	if m != nil {
+		return m.GCPolicy
+	}
+	return nil
+}
+
+type GCPolicy struct {
+	All          bool     `protobuf:"varint,1,opt,name=all,proto3" json:"all,omitempty"`
+	KeepDuration int64    `protobuf:"varint,2,opt,name=keepDuration,proto3" json:"keepDuration,omitempty"`
+	KeepBytes    int64    `protobuf:"varint,3,opt,name=keepBytes,proto3" json:"keepBytes,omitempty"`
+	Filters      []string `protobuf:"bytes,4,rep,name=filters" json:"filters,omitempty"`
+}
+
+func (m *GCPolicy) Reset()                    { *m = GCPolicy{} }
+func (m *GCPolicy) String() string            { return proto.CompactTextString(m) }
+func (*GCPolicy) ProtoMessage()               {}
+func (*GCPolicy) Descriptor() ([]byte, []int) { return fileDescriptorWorker, []int{1} }
+
+func (m *GCPolicy) GetAll() bool {
+	if m != nil {
+		return m.All
+	}
+	return false
+}
+
+func (m *GCPolicy) GetKeepDuration() int64 {
+	if m != nil {
+		return m.KeepDuration
+	}
+	return 0
+}
+
+func (m *GCPolicy) GetKeepBytes() int64 {
+	if m != nil {
+		return m.KeepBytes
+	}
+	return 0
+}
+
+func (m *GCPolicy) GetFilters() []string {
+	if m != nil {
+		return m.Filters
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*WorkerRecord)(nil), "moby.buildkit.v1.types.WorkerRecord")
+	proto.RegisterType((*GCPolicy)(nil), "moby.buildkit.v1.types.GCPolicy")
 }
 func (m *WorkerRecord) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
@@ -116,6 +166,71 @@ func (m *WorkerRecord) MarshalTo(dAtA []byte) (int, error) {
 			i += n
 		}
 	}
+	if len(m.GCPolicy) > 0 {
+		for _, msg := range m.GCPolicy {
+			dAtA[i] = 0x22
+			i++
+			i = encodeVarintWorker(dAtA, i, uint64(msg.Size()))
+			n, err := msg.MarshalTo(dAtA[i:])
+			if err != nil {
+				return 0, err
+			}
+			i += n
+		}
+	}
+	return i, nil
+}
+
+func (m *GCPolicy) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *GCPolicy) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if m.All {
+		dAtA[i] = 0x8
+		i++
+		if m.All {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i++
+	}
+	if m.KeepDuration != 0 {
+		dAtA[i] = 0x10
+		i++
+		i = encodeVarintWorker(dAtA, i, uint64(m.KeepDuration))
+	}
+	if m.KeepBytes != 0 {
+		dAtA[i] = 0x18
+		i++
+		i = encodeVarintWorker(dAtA, i, uint64(m.KeepBytes))
+	}
+	if len(m.Filters) > 0 {
+		for _, s := range m.Filters {
+			dAtA[i] = 0x22
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
 	return i, nil
 }
 
@@ -149,6 +264,33 @@ func (m *WorkerRecord) Size() (n int) {
 			n += 1 + l + sovWorker(uint64(l))
 		}
 	}
+	if len(m.GCPolicy) > 0 {
+		for _, e := range m.GCPolicy {
+			l = e.Size()
+			n += 1 + l + sovWorker(uint64(l))
+		}
+	}
+	return n
+}
+
+func (m *GCPolicy) Size() (n int) {
+	var l int
+	_ = l
+	if m.All {
+		n += 2
+	}
+	if m.KeepDuration != 0 {
+		n += 1 + sovWorker(uint64(m.KeepDuration))
+	}
+	if m.KeepBytes != 0 {
+		n += 1 + sovWorker(uint64(m.KeepBytes))
+	}
+	if len(m.Filters) > 0 {
+		for _, s := range m.Filters {
+			l = len(s)
+			n += 1 + l + sovWorker(uint64(l))
+		}
+	}
 	return n
 }
 
@@ -372,6 +514,174 @@ func (m *WorkerRecord) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 4:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field GCPolicy", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWorker
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthWorker
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.GCPolicy = append(m.GCPolicy, &GCPolicy{})
+			if err := m.GCPolicy[len(m.GCPolicy)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipWorker(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthWorker
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *GCPolicy) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowWorker
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: GCPolicy: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: GCPolicy: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field All", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWorker
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.All = bool(v != 0)
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field KeepDuration", wireType)
+			}
+			m.KeepDuration = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWorker
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.KeepDuration |= (int64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field KeepBytes", wireType)
+			}
+			m.KeepBytes = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWorker
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.KeepBytes |= (int64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 4:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Filters", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowWorker
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthWorker
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Filters = append(m.Filters, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipWorker(dAtA[iNdEx:])
@@ -501,23 +811,28 @@ var (
 func init() { proto.RegisterFile("worker.proto", fileDescriptorWorker) }
 
 var fileDescriptorWorker = []byte{
-	// 273 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x8f, 0x41, 0x4b, 0xf3, 0x40,
-	0x10, 0x86, 0xbf, 0x4d, 0x3e, 0x0b, 0xdd, 0x06, 0x91, 0x45, 0x24, 0xe4, 0x10, 0x8b, 0xa7, 0x1e,
-	0x74, 0xb6, 0xea, 0x45, 0x3d, 0x96, 0x0a, 0x16, 0x3c, 0x48, 0x2e, 0x9e, 0xb3, 0xed, 0x36, 0x86,
-	0x24, 0xce, 0xb2, 0xd9, 0x44, 0xf2, 0x0f, 0x7b, 0xf4, 0xe2, 0x55, 0x24, 0xbf, 0x44, 0xba, 0x89,
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-	0x00,
+	// 355 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x91, 0xc1, 0x4e, 0xea, 0x40,
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+	0x5c, 0xf6, 0x73, 0x15, 0xeb, 0x04, 0xe6, 0x16, 0xf7, 0xe8, 0x37, 0x0f, 0x1f, 0x22, 0xdf, 0xe8,
+	0x5e, 0xa1, 0xb9, 0x39, 0xd6, 0x04, 0xb6, 0x06, 0x0e, 0xd1, 0xbf, 0x49, 0x22, 0x34, 0x57, 0x99,
+	0xbd, 0xcb, 0xa7, 0x1b, 0xd9, 0x0b, 0x96, 0xab, 0xa6, 0xf3, 0xb6, 0x6a, 0x3a, 0x1f, 0xab, 0xa6,
+	0xc3, 0xaa, 0xf6, 0x93, 0xce, 0x3f, 0x03, 0x00, 0x00, 0xff, 0xff, 0xfc, 0x79, 0x52, 0x6a, 0x29,
+	0x02, 0x00, 0x00,
 }

vendor/github.com/moby/buildkit/api/types/worker.proto

@@ -13,4 +13,12 @@ message WorkerRecord {
 	string ID = 1;
 	map<string, string> Labels = 2;
 	repeated pb.Platform platforms = 3 [(gogoproto.nullable) = false];
+	repeated GCPolicy GCPolicy = 4;
+}
+
+message GCPolicy {
+	bool all = 1;
+	int64 keepDuration = 2;
+	int64 keepBytes = 3;
+	repeated string filters = 4;
 }

vendor/github.com/moby/buildkit/cache/manager.go

@@ -39,7 +39,7 @@ type Accessor interface {
 
 type Controller interface {
 	DiskUsage(ctx context.Context, info client.DiskUsageInfo) ([]*client.UsageInfo, error)
-	Prune(ctx context.Context, ch chan client.UsageInfo, info client.PruneInfo) error
+	Prune(ctx context.Context, ch chan client.UsageInfo, info ...client.PruneInfo) error
 	GC(ctx context.Context) error
 }
 
@@ -304,10 +304,19 @@ func (cm *cacheManager) GetMutable(ctx context.Context, id string) (MutableRef,
 	return rec.mref(), nil
 }
 
-func (cm *cacheManager) Prune(ctx context.Context, ch chan client.UsageInfo, opt client.PruneInfo) error {
+func (cm *cacheManager) Prune(ctx context.Context, ch chan client.UsageInfo, opts ...client.PruneInfo) error {
 	cm.muPrune.Lock()
 	defer cm.muPrune.Unlock()
 
+	for _, opt := range opts {
+		if err := cm.pruneOnce(ctx, ch, opt); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (cm *cacheManager) pruneOnce(ctx context.Context, ch chan client.UsageInfo, opt client.PruneInfo) error {
 	filter, err := filters.ParseAll(opt.Filter...)
 	if err != nil {
 		return err

vendor/github.com/moby/buildkit/client/llb/state.go

@@ -67,7 +67,7 @@ func (s State) Value(k interface{}) interface{} {
 	return s.ctx.Value(k)
 }
 
-func (s State) SetMarhalDefaults(co ...ConstraintsOpt) State {
+func (s State) SetMarshalDefaults(co ...ConstraintsOpt) State {
 	s.opts = co
 	return s
 }

vendor/github.com/moby/buildkit/client/workers.go

@@ -2,8 +2,10 @@ package client
 
 import (
 	"context"
+	"time"
 
 	controlapi "github.com/moby/buildkit/api/services/control"
+	apitypes "github.com/moby/buildkit/api/types"
 	"github.com/moby/buildkit/solver/pb"
 	specs "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
@@ -13,6 +15,7 @@ type WorkerInfo struct {
 	ID        string
 	Labels    map[string]string
 	Platforms []specs.Platform
+	GCPolicy  []PruneInfo
 }
 
 func (c *Client) ListWorkers(ctx context.Context, opts ...ListWorkersOption) ([]*WorkerInfo, error) {
@@ -34,6 +37,7 @@ func (c *Client) ListWorkers(ctx context.Context, opts ...ListWorkersOption) ([]
 			ID:        w.ID,
 			Labels:    w.Labels,
 			Platforms: pb.ToSpecPlatforms(w.Platforms),
+			GCPolicy:  fromAPIGCPolicy(w.GCPolicy),
 		})
 	}
 
@@ -47,3 +51,16 @@ type ListWorkersOption interface {
 type ListWorkersInfo struct {
 	Filter []string
 }
+
+func fromAPIGCPolicy(in []*apitypes.GCPolicy) []PruneInfo {
+	out := make([]PruneInfo, 0, len(in))
+	for _, p := range in {
+		out = append(out, PruneInfo{
+			All:          p.All,
+			Filter:       p.Filters,
+			KeepDuration: time.Duration(p.KeepDuration),
+			KeepBytes:    p.KeepBytes,
+		})
+	}
+	return out
+}

vendor/github.com/moby/buildkit/control/control.go

@@ -2,6 +2,7 @@ package control
 
 import (
 	"context"
+	"sync"
 	"time"
 
 	"github.com/docker/distribution/reference"
@@ -17,6 +18,7 @@ import (
 	"github.com/moby/buildkit/solver"
 	"github.com/moby/buildkit/solver/llbsolver"
 	"github.com/moby/buildkit/solver/pb"
+	"github.com/moby/buildkit/util/throttle"
 	"github.com/moby/buildkit/worker"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -40,6 +42,8 @@ type Controller struct { // TODO: ControlService
 	solver           *llbsolver.Solver
 	cache            solver.CacheManager
 	gatewayForwarder *controlgateway.GatewayForwarder
+	throttledGC      func()
+	gcmu             sync.Mutex
 }
 
 func NewController(opt Opt) (*Controller, error) {
@@ -58,6 +62,12 @@ func NewController(opt Opt) (*Controller, error) {
 		cache:            cache,
 		gatewayForwarder: gatewayForwarder,
 	}
+	c.throttledGC = throttle.ThrottleAfter(time.Minute, c.gc)
+
+	defer func() {
+		time.AfterFunc(time.Second, c.throttledGC)
+	}()
+
 	return c, nil
 }
 
@@ -172,6 +182,10 @@ func (c *Controller) Prune(req *controlapi.PruneRequest, stream controlapi.Contr
 func (c *Controller) Solve(ctx context.Context, req *controlapi.SolveRequest) (*controlapi.SolveResponse, error) {
 	ctx = session.NewContext(ctx, req.Session)
 
+	defer func() {
+		time.AfterFunc(time.Second, c.throttledGC)
+	}()
+
 	var expi exporter.ExporterInstance
 	// TODO: multiworker
 	// This is actually tricky, as the exporter should come from the worker that has the returned reference. We may need to delay this so that the solver loads this.
@@ -313,11 +327,55 @@ func (c *Controller) ListWorkers(ctx context.Context, r *controlapi.ListWorkersR
 			ID:        w.ID(),
 			Labels:    w.Labels(),
 			Platforms: pb.PlatformsFromSpec(w.Platforms()),
+			GCPolicy:  toPBGCPolicy(w.GCPolicy()),
 		})
 	}
 	return resp, nil
 }
 
+func (c *Controller) gc() {
+	c.gcmu.Lock()
+	defer c.gcmu.Unlock()
+
+	workers, err := c.opt.WorkerController.List()
+	if err != nil {
+		return
+	}
+
+	eg, ctx := errgroup.WithContext(context.TODO())
+
+	var size int64
+	ch := make(chan client.UsageInfo)
+	done := make(chan struct{})
+	go func() {
+		for ui := range ch {
+			size += ui.Size
+		}
+		close(done)
+	}()
+
+	for _, w := range workers {
+		func(w worker.Worker) {
+			eg.Go(func() error {
+				if policy := w.GCPolicy(); len(policy) > 0 {
+					return w.Prune(ctx, ch, policy...)
+				}
+				return nil
+			})
+		}(w)
+	}
+
+	err = eg.Wait()
+	close(ch)
+	if err != nil {
+		logrus.Errorf("gc error: %+v", err)
+	}
+	<-done
+	if size > 0 {
+		logrus.Debugf("gc cleaned up %d bytes", size)
+	}
+}
+
 func parseCacheExporterOpt(opt map[string]string) solver.CacheExportMode {
 	for k, v := range opt {
 		switch k {
@@ -336,3 +394,16 @@ func parseCacheExporterOpt(opt map[string]string) solver.CacheExportMode {
 	}
 	return solver.CacheExportModeMin
 }
+
+func toPBGCPolicy(in []client.PruneInfo) []*apitypes.GCPolicy {
+	policy := make([]*apitypes.GCPolicy, 0, len(in))
+	for _, p := range in {
+		policy = append(policy, &apitypes.GCPolicy{
+			All:          p.All,
+			KeepBytes:    p.KeepBytes,
+			KeepDuration: int64(p.KeepDuration),
+			Filters:      p.Filter,
+		})
+	}
+	return policy
+}

vendor/github.com/moby/buildkit/executor/runcexecutor/executor.go

@@ -36,6 +36,8 @@ type Opt struct {
 	CommandCandidates []string
 	// without root privileges (has nothing to do with Opt.Root directory)
 	Rootless bool
+	// DefaultCgroupParent is the cgroup-parent name for executor
+	DefaultCgroupParent string
 }
 
 var defaultCommandCandidates = []string{"buildkit-runc", "runc"}
@@ -44,6 +46,7 @@ type runcExecutor struct {
 	runc             *runc.Runc
 	root             string
 	cmd              string
+	cgroupParent     string
 	rootless         bool
 	networkProviders map[pb.NetMode]network.Provider
 }
@@ -94,6 +97,7 @@ func New(opt Opt, networkProviders map[pb.NetMode]network.Provider) (executor.Ex
 	w := &runcExecutor{
 		runc:             runtime,
 		root:             root,
+		cgroupParent:     opt.DefaultCgroupParent,
 		rootless:         opt.Rootless,
 		networkProviders: networkProviders,
 	}
@@ -173,6 +177,17 @@ func (w *runcExecutor) Exec(ctx context.Context, meta executor.Meta, root cache.
 	if meta.ReadonlyRootFS {
 		opts = append(opts, containerdoci.WithRootFSReadonly())
 	}
+
+	if w.cgroupParent != "" {
+		var cgroupsPath string
+		lastSeparator := w.cgroupParent[len(w.cgroupParent)-1:]
+		if strings.Contains(w.cgroupParent, ".slice") && lastSeparator == ":" {
+			cgroupsPath = w.cgroupParent + id
+		} else {
+			cgroupsPath = filepath.Join("/", w.cgroupParent, "buildkit", id)
+		}
+		opts = append(opts, containerdoci.WithCgroup(cgroupsPath))
+	}
 	spec, cleanup, err := oci.GenerateSpec(ctx, meta, mounts, id, resolvConf, hostsFile, namespace, opts...)
 	if err != nil {
 		return err

vendor/github.com/moby/buildkit/frontend/dockerfile/dockerfile2llb/convert.go

@@ -347,7 +347,7 @@ func Dockerfile2LLB(ctx context.Context, dt []byte, opt ConvertOpt) (*llb.State,
 	}
 	buildContext.Output = bc.Output()
 
-	st := target.state.SetMarhalDefaults(llb.Platform(platformOpt.targetPlatform))
+	st := target.state.SetMarshalDefaults(llb.Platform(platformOpt.targetPlatform))
 
 	if !platformOpt.implicitTarget {
 		target.image.OS = platformOpt.targetPlatform.OS

vendor/github.com/moby/buildkit/frontend/gateway/forwarder/forward.go

@@ -67,7 +67,11 @@ func (c *bridgeClient) Solve(ctx context.Context, req client.SolveRequest) (*cli
 func (c *bridgeClient) BuildOpts() client.BuildOpts {
 	workers := make([]client.WorkerInfo, 0, len(c.workerInfos))
 	for _, w := range c.workerInfos {
-		workers = append(workers, client.WorkerInfo(w))
+		workers = append(workers, client.WorkerInfo{
+			ID:        w.ID,
+			Labels:    w.Labels,
+			Platforms: w.Platforms,
+		})
 	}
 
 	return client.BuildOpts{

vendor/github.com/moby/buildkit/util/throttle/throttle.go

@@ -0,0 +1,58 @@
+package throttle
+
+import (
+	"sync"
+	"time"
+)
+
+// Throttle wraps a function so that internal function does not get called
+// more frequently than the specified duration.
+func Throttle(d time.Duration, f func()) func() {
+	return throttle(d, f, true)
+}
+
+// ThrottleAfter wraps a function so that internal function does not get called
+// more frequently than the specified duration. The delay is added after function
+// has been called.
+func ThrottleAfter(d time.Duration, f func()) func() {
+	return throttle(d, f, false)
+}
+
+func throttle(d time.Duration, f func(), wait bool) func() {
+	var next, running bool
+	var mu sync.Mutex
+	return func() {
+		mu.Lock()
+		defer mu.Unlock()
+
+		next = true
+		if !running {
+			running = true
+			go func() {
+				for {
+					mu.Lock()
+					if next == false {
+						running = false
+						mu.Unlock()
+						return
+					}
+					if !wait {
+						next = false
+					}
+					mu.Unlock()
+
+					if wait {
+						time.Sleep(d)
+						mu.Lock()
+						next = false
+						mu.Unlock()
+						f()
+					} else {
+						f()
+						time.Sleep(d)
+					}
+				}
+			}()
+		}
+	}
+}

vendor/github.com/moby/buildkit/worker/worker.go

@@ -20,6 +20,7 @@ type Worker interface {
 	ID() string
 	Labels() map[string]string
 	Platforms() []specs.Platform
+	GCPolicy() []client.PruneInfo
 	LoadRef(id string) (cache.ImmutableRef, error)
 	// ResolveOp resolves Vertex.Sys() to Op implementation.
 	ResolveOp(v solver.Vertex, s frontend.FrontendLLBBridge) (solver.Op, error)
@@ -28,7 +29,7 @@ type Worker interface {
 	Exec(ctx context.Context, meta executor.Meta, rootFS cache.ImmutableRef, stdin io.ReadCloser, stdout, stderr io.WriteCloser) error
 	DiskUsage(ctx context.Context, opt client.DiskUsageInfo) ([]*client.UsageInfo, error)
 	Exporter(name string) (exporter.Exporter, error)
-	Prune(ctx context.Context, ch chan client.UsageInfo, opt client.PruneInfo) error
+	Prune(ctx context.Context, ch chan client.UsageInfo, opt ...client.PruneInfo) error
 	GetRemote(ctx context.Context, ref cache.ImmutableRef, createIfNeeded bool) (*solver.Remote, error)
 	FromRemote(ctx context.Context, remote *solver.Remote) (cache.ImmutableRef, error)
 }