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Add pause/unpause implementation

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This adds pause and unpause to containerd's execution service and the
same commands to the `ctr` client.

Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
This commit is contained in:
Phil Estes 2017-05-05 10:11:08 -04:00
parent ae93c236ff
commit 91410874e7
No known key found for this signature in database
GPG Key ID: 0F386284C03A1162
17 changed files with 512 additions and 63 deletions
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2
api/services/content/content.pb.go
View File

@ -2588,7 +2588,7 @@ func init() {
var fileDescriptorContent = []byte{
// 768 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x55, 0x4f, 0x6f, 0xd3, 0x4e,
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x55, 0x4f, 0x6f, 0xd3, 0x4e,
0x10, 0xcd, 0xe6, 0x8f, 0x7f, 0xcd, 0x24, 0xed, 0x2f, 0x6c, 0x43, 0x15, 0xb9, 0xad, 0x13, 0xc2,
0x25, 0xaa, 0x84, 0x53, 0xc2, 0x0d, 0x0e, 0xc8, 0x49, 0x4b, 0x55, 0xa4, 0x52, 0xc9, 0x8d, 0x54,
0x71, 0x42, 0x4e, 0xb2, 0x09, 0x96, 0x1a, 0xaf, 0xb1, 0x37, 0x55, 0xe1, 0xc4, 0x05, 0x09, 0xf5,

439
api/services/execution/execution.pb.go
View File

@ -23,6 +23,8 @@
ExecResponse
PtyRequest
CloseStdinRequest
PauseRequest
ResumeRequest
*/
package execution
@ -193,6 +195,22 @@ func (m *CloseStdinRequest) Reset() { *m = CloseStdinRequest{
func (*CloseStdinRequest) ProtoMessage() {}
func (*CloseStdinRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{13} }
type PauseRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
}
func (m *PauseRequest) Reset() { *m = PauseRequest{} }
func (*PauseRequest) ProtoMessage() {}
func (*PauseRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{14} }
type ResumeRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
}
func (m *ResumeRequest) Reset() { *m = ResumeRequest{} }
func (*ResumeRequest) ProtoMessage() {}
func (*ResumeRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{15} }
func init() {
proto.RegisterType((*CreateRequest)(nil), "containerd.v1.services.CreateRequest")
proto.RegisterType((*CreateResponse)(nil), "containerd.v1.services.CreateResponse")
@ -208,6 +226,8 @@ func init() {
proto.RegisterType((*ExecResponse)(nil), "containerd.v1.services.ExecResponse")
proto.RegisterType((*PtyRequest)(nil), "containerd.v1.services.PtyRequest")
proto.RegisterType((*CloseStdinRequest)(nil), "containerd.v1.services.CloseStdinRequest")
proto.RegisterType((*PauseRequest)(nil), "containerd.v1.services.PauseRequest")
proto.RegisterType((*ResumeRequest)(nil), "containerd.v1.services.ResumeRequest")
}
// Reference imports to suppress errors if they are not otherwise used.
@ -231,6 +251,8 @@ type ContainerServiceClient interface {
Exec(ctx context.Context, in *ExecRequest, opts ...grpc.CallOption) (*ExecResponse, error)
Pty(ctx context.Context, in *PtyRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
CloseStdin(ctx context.Context, in *CloseStdinRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Pause(ctx context.Context, in *PauseRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Resume(ctx context.Context, in *ResumeRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
}
type containerServiceClient struct {
@ -354,6 +376,24 @@ func (c *containerServiceClient) CloseStdin(ctx context.Context, in *CloseStdinR
return out, nil
}
func (c *containerServiceClient) Pause(ctx context.Context, in *PauseRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
out := new(google_protobuf.Empty)
err := grpc.Invoke(ctx, "/containerd.v1.services.ContainerService/Pause", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *containerServiceClient) Resume(ctx context.Context, in *ResumeRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
out := new(google_protobuf.Empty)
err := grpc.Invoke(ctx, "/containerd.v1.services.ContainerService/Resume", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for ContainerService service
type ContainerServiceServer interface {
@ -367,6 +407,8 @@ type ContainerServiceServer interface {
Exec(context.Context, *ExecRequest) (*ExecResponse, error)
Pty(context.Context, *PtyRequest) (*google_protobuf.Empty, error)
CloseStdin(context.Context, *CloseStdinRequest) (*google_protobuf.Empty, error)
Pause(context.Context, *PauseRequest) (*google_protobuf.Empty, error)
Resume(context.Context, *ResumeRequest) (*google_protobuf.Empty, error)
}
func RegisterContainerServiceServer(s *grpc.Server, srv ContainerServiceServer) {
@ -556,6 +598,42 @@ func _ContainerService_CloseStdin_Handler(srv interface{}, ctx context.Context,
return interceptor(ctx, in, info, handler)
}
func _ContainerService_Pause_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(PauseRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(ContainerServiceServer).Pause(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/containerd.v1.services.ContainerService/Pause",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(ContainerServiceServer).Pause(ctx, req.(*PauseRequest))
}
return interceptor(ctx, in, info, handler)
}
func _ContainerService_Resume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(ResumeRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(ContainerServiceServer).Resume(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/containerd.v1.services.ContainerService/Resume",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(ContainerServiceServer).Resume(ctx, req.(*ResumeRequest))
}
return interceptor(ctx, in, info, handler)
}
var _ContainerService_serviceDesc = grpc.ServiceDesc{
ServiceName: "containerd.v1.services.ContainerService",
HandlerType: (*ContainerServiceServer)(nil),
@ -596,6 +674,14 @@ var _ContainerService_serviceDesc = grpc.ServiceDesc{
MethodName: "CloseStdin",
Handler: _ContainerService_CloseStdin_Handler,
},
{
MethodName: "Pause",
Handler: _ContainerService_Pause_Handler,
},
{
MethodName: "Resume",
Handler: _ContainerService_Resume_Handler,
},
},
Streams: []grpc.StreamDesc{
{
@ -1083,6 +1169,54 @@ func (m *CloseStdinRequest) MarshalTo(dAtA []byte) (int, error) {
return i, nil
}
func (m *PauseRequest) 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 *PauseRequest) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.ID) > 0 {
dAtA[i] = 0xa
i++
i = encodeVarintExecution(dAtA, i, uint64(len(m.ID)))
i += copy(dAtA[i:], m.ID)
}
return i, nil
}
func (m *ResumeRequest) 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 *ResumeRequest) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.ID) > 0 {
dAtA[i] = 0xa
i++
i = encodeVarintExecution(dAtA, i, uint64(len(m.ID)))
i += copy(dAtA[i:], m.ID)
}
return i, nil
}
func encodeFixed64Execution(dAtA []byte, offset int, v uint64) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
@ -1317,6 +1451,26 @@ func (m *CloseStdinRequest) Size() (n int) {
return n
}
func (m *PauseRequest) Size() (n int) {
var l int
_ = l
l = len(m.ID)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
return n
}
func (m *ResumeRequest) Size() (n int) {
var l int
_ = l
l = len(m.ID)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
return n
}
func sovExecution(x uint64) (n int) {
for {
n++
@ -1489,6 +1643,26 @@ func (this *CloseStdinRequest) String() string {
}, "")
return s
}
func (this *PauseRequest) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&PauseRequest{`,
`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
`}`,
}, "")
return s
}
func (this *ResumeRequest) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&ResumeRequest{`,
`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
`}`,
}, "")
return s
}
func valueToStringExecution(v interface{}) string {
rv := reflect.ValueOf(v)
if rv.IsNil() {
@ -3060,6 +3234,164 @@ func (m *CloseStdinRequest) Unmarshal(dAtA []byte) error {
}
return nil
}
func (m *PauseRequest) 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 ErrIntOverflowExecution
}
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: PauseRequest: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: PauseRequest: illegal tag %d (wire type %d)", fieldNum, wire)
}
switch fieldNum {
case 1:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowExecution
}
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 ErrInvalidLengthExecution
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.ID = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipExecution(dAtA[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthExecution
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
iNdEx += skippy
}
}
if iNdEx > l {
return io.ErrUnexpectedEOF
}
return nil
}
func (m *ResumeRequest) 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 ErrIntOverflowExecution
}
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: ResumeRequest: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: ResumeRequest: illegal tag %d (wire type %d)", fieldNum, wire)
}
switch fieldNum {
case 1:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowExecution
}
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 ErrInvalidLengthExecution
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.ID = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipExecution(dAtA[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthExecution
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
iNdEx += skippy
}
}
if iNdEx > l {
return io.ErrUnexpectedEOF
}
return nil
}
func skipExecution(dAtA []byte) (n int, err error) {
l := len(dAtA)
iNdEx := 0
@ -3170,56 +3502,59 @@ func init() {
}
var fileDescriptorExecution = []byte{
// 814 bytes of a gzipped FileDescriptorProto
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}

10
api/services/execution/execution.proto
View File

@ -20,6 +20,8 @@ service ContainerService {
rpc Exec(ExecRequest) returns (ExecResponse);
rpc Pty(PtyRequest) returns (google.protobuf.Empty);
rpc CloseStdin(CloseStdinRequest) returns (google.protobuf.Empty);
rpc Pause(PauseRequest) returns (google.protobuf.Empty);
rpc Resume(ResumeRequest) returns (google.protobuf.Empty);
}
message CreateRequest {
@ -96,3 +98,11 @@ message CloseStdinRequest {
string id = 1 [(gogoproto.customname) = "ID"];
uint32 pid = 2;
}
message PauseRequest {
string id = 1 [(gogoproto.customname) = "ID"];
}
message ResumeRequest {
string id = 1 [(gogoproto.customname) = "ID"];
}

2
api/services/images/images.pb.go
View File

@ -1335,7 +1335,7 @@ func init() {
var fileDescriptorImages = []byte{
// 419 bytes of a gzipped FileDescriptorProto
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2
api/services/rootfs/rootfs.pb.go
View File

@ -1103,7 +1103,7 @@ func init() {
var fileDescriptorRootfs = []byte{
// 428 bytes of a gzipped FileDescriptorProto
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2
api/services/shim/shim.pb.go
View File

@ -3468,7 +3468,7 @@ func init() {
var fileDescriptorShim = []byte{
// 913 bytes of a gzipped FileDescriptorProto
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2
api/types/container/container.pb.go
View File

@ -1364,7 +1364,7 @@ func init() {
var fileDescriptorContainer = []byte{
// 576 bytes of a gzipped FileDescriptorProto
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2
api/types/descriptor/descriptor.pb.go
View File

@ -404,7 +404,7 @@ func init() {
var fileDescriptorDescriptor = []byte{
// 229 bytes of a gzipped FileDescriptorProto
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2
api/types/mount/mount.pb.go
View File

@ -473,7 +473,7 @@ func init() {
var fileDescriptorMount = []byte{
// 197 bytes of a gzipped FileDescriptorProto
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2
cmd/ctr/main.go
View File

@ -59,6 +59,8 @@ containerd client
killCommand,
pprofCommand,
execCommand,
pauseCommand,
resumeCommand,
}
app.Commands = append(app.Commands, extraCmds...)
app.Before = func(context *cli.Context) error {

29
cmd/ctr/pause.go Normal file
View File

@ -0,0 +1,29 @@
package main
import (
gocontext "context"
"errors"
"github.com/containerd/containerd/api/services/execution"
"github.com/urfave/cli"
)
var pauseCommand = cli.Command{
Name: "pause",
Usage: "pause an existing container",
ArgsUsage: "CONTAINER",
Action: func(context *cli.Context) error {
containers, err := getExecutionService(context)
if err != nil {
return err
}
id := context.Args().First()
if id == "" {
return errors.New("container id must be provided")
}
_, err = containers.Pause(gocontext.Background(), &execution.PauseRequest{
ID: id,
})
return err
},
}

29
cmd/ctr/resume.go Normal file
View File

@ -0,0 +1,29 @@
package main
import (
gocontext "context"
"errors"
"github.com/containerd/containerd/api/services/execution"
"github.com/urfave/cli"
)
var resumeCommand = cli.Command{
Name: "resume",
Usage: "resume a paused container",
ArgsUsage: "CONTAINER",
Action: func(context *cli.Context) error {
containers, err := getExecutionService(context)
if err != nil {
return err
}
id := context.Args().First()
if id == "" {
return errors.New("container id must be provided")
}
_, err = containers.Resume(gocontext.Background(), &execution.ResumeRequest{
ID: id,
})
return err
},
}

7
container.go
View File

@ -14,6 +14,10 @@ type Container interface {
Start(context.Context) error
// State returns the container's state
State(context.Context) (State, error)
// Pause pauses the container process
Pause(context.Context) error
// Resume unpauses the container process
Resume(context.Context) error
// Kill signals a container
Kill(context.Context, uint32, bool) error
// Exec adds a process into the container
@ -26,9 +30,6 @@ type Container interface {
type LinuxContainer interface {
Container
Pause(context.Context) error
Resume(context.Context) error
}
type ExecOpts struct {

24
services/execution/service.go
View File

@ -188,6 +188,30 @@ func (s *Service) List(ctx context.Context, r *api.ListRequest) (*api.ListRespon
return resp, nil
}
func (s *Service) Pause(ctx context.Context, r *api.PauseRequest) (*google_protobuf.Empty, error) {
c, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
err = c.Pause(ctx)
if err != nil {
return nil, err
}
return empty, nil
}
func (s *Service) Resume(ctx context.Context, r *api.ResumeRequest) (*google_protobuf.Empty, error) {
c, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
err = c.Resume(ctx)
if err != nil {
return nil, err
}
return empty, nil
}
func (s *Service) Kill(ctx context.Context, r *api.KillRequest) (*google_protobuf.Empty, error) {
c, err := s.getContainer(r.ID)
if err != nil {

2
snapshot/storage/proto/record.pb.go
View File

@ -512,7 +512,7 @@ func init() {
var fileDescriptorRecord = []byte{
// 330 bytes of a gzipped FileDescriptorProto
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0x82, 0xda, 0x95, 0x63, 0x2a, 0xc1, 0xc4, 0x88, 0x7a, 0x0f, 0x9d, 0x60, 0xe3, 0x0e, 0xb8, 0x82,

15
windows/container.go
View File

@ -4,6 +4,7 @@ package windows
import (
"encoding/json"
"fmt"
"sync"
"time"
@ -101,6 +102,20 @@ func (c *container) Start(ctx context.Context) error {
return nil
}
func (c *container) Pause(ctx context.Context) error {
if c.ctr.GetConfiguration().UseHyperV == false {
return fmt.Errorf("Windows non-HyperV containers do not support pause")
}
return c.ctr.Pause()
}
func (c *container) Resume(ctx context.Context) error {
if c.ctr.GetConfiguration().UseHyperV == false {
return fmt.Errorf("Windows non-HyperV containers do not support resume")
}
return c.ctr.Resume()
}
func (c *container) State(ctx context.Context) (containerd.State, error) {
return c, nil
}

4
windows/hcs/hcs.go
View File

@ -299,6 +299,10 @@ func (c *Container) ExitCode() (uint32, error) {
return c.processes[0].ExitCode()
}
func (c *Container) GetConfiguration() Configuration {
return c.conf
}
func (c *Container) AddProcess(ctx context.Context, spec specs.Process, io *IO) (*Process, error) {
if len(c.processes) == 0 {
return nil, errors.New("container not started")