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Add synchronous image delete

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Synchronous image delete provides an option image delete to wait
until the next garbage collection deletes after an image is removed
before returning success to the caller.

Signed-off-by: Derek McGowan <derek@mcgstyle.net>
This commit is contained in:
Derek McGowan 2017-11-13 16:09:29 -08:00
parent 72fb8f8f40
commit 3f1a61f76a
No known key found for this signature in database
GPG Key ID: F58C5D0A4405ACDB
9 changed files with 154 additions and 51 deletions
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7
api/next.pb.txt
View File

@ -2193,6 +2193,13 @@ file {
type: TYPE_STRING
json_name: "name"
}
field {
name: "sync"
number: 2
label: LABEL_OPTIONAL
type: TYPE_BOOL
json_name: "sync"
}
}
service {
name: "Images"

122
api/services/images/v1/images.pb.go
View File

@ -163,6 +163,9 @@ func (*ListImagesResponse) Descriptor() ([]byte, []int) { return fileDescriptorI
type DeleteImageRequest struct {
Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
// Sync indicates that the delete and cleanup should be done
// synchronously before returning to the caller
Sync bool `protobuf:"varint,2,opt,name=sync,proto3" json:"sync,omitempty"`
}
func (m *DeleteImageRequest) Reset() { *m = DeleteImageRequest{} }
@ -717,6 +720,16 @@ func (m *DeleteImageRequest) MarshalTo(dAtA []byte) (int, error) {
i = encodeVarintImages(dAtA, i, uint64(len(m.Name)))
i += copy(dAtA[i:], m.Name)
}
if m.Sync {
dAtA[i] = 0x10
i++
if m.Sync {
dAtA[i] = 1
} else {
dAtA[i] = 0
}
i++
}
return i, nil
}
@ -840,6 +853,9 @@ func (m *DeleteImageRequest) Size() (n int) {
if l > 0 {
n += 1 + l + sovImages(uint64(l))
}
if m.Sync {
n += 2
}
return n
}
@ -967,6 +983,7 @@ func (this *DeleteImageRequest) String() string {
}
s := strings.Join([]string{`&DeleteImageRequest{`,
`Name:` + fmt.Sprintf("%v", this.Name) + `,`,
`Sync:` + fmt.Sprintf("%v", this.Sync) + `,`,
`}`,
}, "")
return s
@ -1999,6 +2016,26 @@ func (m *DeleteImageRequest) Unmarshal(dAtA []byte) error {
}
m.Name = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 2:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Sync", wireType)
}
var v int
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowImages
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
v |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
m.Sync = bool(v != 0)
default:
iNdEx = preIndex
skippy, err := skipImages(dAtA[iNdEx:])
@ -2130,46 +2167,47 @@ func init() {
}
var fileDescriptorImages = []byte{
// 650 bytes of a gzipped FileDescriptorProto
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// 659 bytes of a gzipped FileDescriptorProto
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}

4
api/services/images/v1/images.proto
View File

@ -115,4 +115,8 @@ message ListImagesResponse {
message DeleteImageRequest {
string name = 1;
// Sync indicates that the delete and cleanup should be done
// synchronously before returning to the caller
bool sync = 2;
}

2
cmd/containerd/builtins.go
View File

@ -3,7 +3,7 @@ package main
// register containerd builtins here
import (
_ "github.com/containerd/containerd/diff/walking"
_ "github.com/containerd/containerd/gc/policy"
_ "github.com/containerd/containerd/gc/scheduler"
_ "github.com/containerd/containerd/services/containers"
_ "github.com/containerd/containerd/services/content"
_ "github.com/containerd/containerd/services/diff"

16
cmd/ctr/commands/images/images.go
View File

@ -270,8 +270,14 @@ var removeCommand = cli.Command{
Name: "remove",
Aliases: []string{"rm"},
Usage: "remove one or more images by reference",
ArgsUsage: "<ref> [<ref>, ...]",
ArgsUsage: "[flags] <ref> [<ref>, ...]",
Description: "remove one or more images by reference",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "sync",
Usage: "Synchronously remove image and all associated resources",
},
},
Action: func(context *cli.Context) error {
client, ctx, cancel, err := commands.NewClient(context)
if err != nil {
@ -282,8 +288,12 @@ var removeCommand = cli.Command{
exitErr error
imageStore = client.ImageService()
)
for _, target := range context.Args() {
if err := imageStore.Delete(ctx, target); err != nil {
for i, target := range context.Args() {
var opts []images.DeleteOpt
if context.Bool("sync") && i == context.NArg()-1 {
opts = append(opts, images.SynchronousDelete())
}
if err := imageStore.Delete(ctx, target, opts...); err != nil {
if !errdefs.IsNotFound(err) {
if exitErr == nil {
exitErr = errors.Wrapf(err, "unable to delete %v", target)

9
image_store.go
View File

@ -74,9 +74,16 @@ func (s *remoteImages) Update(ctx context.Context, image images.Image, fieldpath
return imageFromProto(&updated.Image), nil
}
func (s *remoteImages) Delete(ctx context.Context, name string) error {
func (s *remoteImages) Delete(ctx context.Context, name string, opts ...images.DeleteOpt) error {
var do images.DeleteOptions
for _, opt := range opts {
if err := opt(ctx, &do); err != nil {
return err
}
}
_, err := s.client.Delete(ctx, &imagesapi.DeleteImageRequest{
Name: name,
Sync: do.Synchronous,
})
return errdefs.FromGRPC(err)

19
images/image.go
View File

@ -38,6 +38,23 @@ type Image struct {
CreatedAt, UpdatedAt time.Time
}
// DeleteOptions provide options on image delete
type DeleteOptions struct {
Synchronous bool
}
// DeleteOpt allows configuring a delete operation
type DeleteOpt func(context.Context, *DeleteOptions) error
// SynchronousDelete is used to indicate that an image deletion and removal of
// the image resources should occur synchronously before returning a result.
func SynchronousDelete() DeleteOpt {
return func(ctx context.Context, o *DeleteOptions) error {
o.Synchronous = true
return nil
}
}
// Store and interact with images
type Store interface {
Get(ctx context.Context, name string) (Image, error)
@ -48,7 +65,7 @@ type Store interface {
// one or more fieldpaths are provided, only those fields will be updated.
Update(ctx context.Context, image Image, fieldpaths ...string) (Image, error)
Delete(ctx context.Context, name string) error
Delete(ctx context.Context, name string, opts ...DeleteOpt) error
}
// TODO(stevvooe): Many of these functions make strong platform assumptions,

2
metadata/images.go
View File

@ -187,7 +187,7 @@ func (s *imageStore) Update(ctx context.Context, image images.Image, fieldpaths
})
}
func (s *imageStore) Delete(ctx context.Context, name string) error {
func (s *imageStore) Delete(ctx context.Context, name string, opts ...images.DeleteOpt) error {
namespace, err := namespaces.NamespaceRequired(ctx)
if err != nil {
return err

24
services/images/service.go
View File

@ -1,6 +1,8 @@
package images
import (
gocontext "context"
"github.com/boltdb/bolt"
eventstypes "github.com/containerd/containerd/api/events"
imagesapi "github.com/containerd/containerd/api/services/images/v1"
@ -22,26 +24,38 @@ func init() {
ID: "images",
Requires: []plugin.Type{
plugin.MetadataPlugin,
plugin.GCPlugin,
},
InitFn: func(ic *plugin.InitContext) (interface{}, error) {
m, err := ic.Get(plugin.MetadataPlugin)
if err != nil {
return nil, err
}
return NewService(m.(*metadata.DB), ic.Events), nil
g, err := ic.Get(plugin.GCPlugin)
if err != nil {
return nil, err
}
return NewService(m.(*metadata.DB), g.(gcScheduler), ic.Events), nil
},
})
}
type gcScheduler interface {
ScheduleAndWait(gocontext.Context) (metadata.GCStats, error)
}
type service struct {
db *metadata.DB
gc gcScheduler
publisher events.Publisher
}
// NewService returns the GRPC image server
func NewService(db *metadata.DB, publisher events.Publisher) imagesapi.ImagesServer {
func NewService(db *metadata.DB, gc gcScheduler, publisher events.Publisher) imagesapi.ImagesServer {
return &service{
db: db,
gc: gc,
publisher: publisher,
}
}
@ -162,6 +176,12 @@ func (s *service) Delete(ctx context.Context, req *imagesapi.DeleteImageRequest)
return nil, err
}
if req.Sync {
if _, err := s.gc.ScheduleAndWait(ctx); err != nil {
return nil, err
}
}
return &ptypes.Empty{}, nil
}