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Merge pull request #696 from crosbymichael/exec

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execution: add exec for additional processes
This commit is contained in:
Phil Estes 2017-04-06 13:53:46 -04:00 committed by GitHub
commit e5c8c5634a
24 changed files with 917 additions and 144 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, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x55, 0x4f, 0x6f, 0xd3, 0x4e,
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 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,

580
api/services/execution/execution.pb.go
View file

@ -19,6 +19,8 @@
ListResponse
KillRequest
EventsRequest
ExecRequest
ExecResponse
*/
package execution
@ -141,6 +143,27 @@ func (m *EventsRequest) Reset() { *m = EventsRequest{} }
func (*EventsRequest) ProtoMessage() {}
func (*EventsRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{9} }
type ExecRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
Terminal bool `protobuf:"varint,2,opt,name=terminal,proto3" json:"terminal,omitempty"`
Stdin string `protobuf:"bytes,3,opt,name=stdin,proto3" json:"stdin,omitempty"`
Stdout string `protobuf:"bytes,4,opt,name=stdout,proto3" json:"stdout,omitempty"`
Stderr string `protobuf:"bytes,5,opt,name=stderr,proto3" json:"stderr,omitempty"`
Spec *google_protobuf1.Any `protobuf:"bytes,6,opt,name=spec" json:"spec,omitempty"`
}
func (m *ExecRequest) Reset() { *m = ExecRequest{} }
func (*ExecRequest) ProtoMessage() {}
func (*ExecRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{10} }
type ExecResponse struct {
Pid uint32 `protobuf:"varint,1,opt,name=pid,proto3" json:"pid,omitempty"`
}
func (m *ExecResponse) Reset() { *m = ExecResponse{} }
func (*ExecResponse) ProtoMessage() {}
func (*ExecResponse) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{11} }
func init() {
proto.RegisterType((*CreateRequest)(nil), "containerd.v1.services.CreateRequest")
proto.RegisterType((*CreateResponse)(nil), "containerd.v1.services.CreateResponse")
@ -152,6 +175,8 @@ func init() {
proto.RegisterType((*ListResponse)(nil), "containerd.v1.services.ListResponse")
proto.RegisterType((*KillRequest)(nil), "containerd.v1.services.KillRequest")
proto.RegisterType((*EventsRequest)(nil), "containerd.v1.services.EventsRequest")
proto.RegisterType((*ExecRequest)(nil), "containerd.v1.services.ExecRequest")
proto.RegisterType((*ExecResponse)(nil), "containerd.v1.services.ExecResponse")
}
// Reference imports to suppress errors if they are not otherwise used.
@ -172,6 +197,7 @@ type ContainerServiceClient interface {
List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
Kill(ctx context.Context, in *KillRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Events(ctx context.Context, in *EventsRequest, opts ...grpc.CallOption) (ContainerService_EventsClient, error)
Exec(ctx context.Context, in *ExecRequest, opts ...grpc.CallOption) (*ExecResponse, error)
}
type containerServiceClient struct {
@ -268,6 +294,15 @@ func (x *containerServiceEventsClient) Recv() (*containerd_v1_types1.Event, erro
return m, nil
}
func (c *containerServiceClient) Exec(ctx context.Context, in *ExecRequest, opts ...grpc.CallOption) (*ExecResponse, error) {
out := new(ExecResponse)
err := grpc.Invoke(ctx, "/containerd.v1.services.ContainerService/Exec", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for ContainerService service
type ContainerServiceServer interface {
@ -278,6 +313,7 @@ type ContainerServiceServer interface {
List(context.Context, *ListRequest) (*ListResponse, error)
Kill(context.Context, *KillRequest) (*google_protobuf.Empty, error)
Events(*EventsRequest, ContainerService_EventsServer) error
Exec(context.Context, *ExecRequest) (*ExecResponse, error)
}
func RegisterContainerServiceServer(s *grpc.Server, srv ContainerServiceServer) {
@ -413,6 +449,24 @@ func (x *containerServiceEventsServer) Send(m *containerd_v1_types1.Event) error
return x.ServerStream.SendMsg(m)
}
func _ContainerService_Exec_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(ExecRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(ContainerServiceServer).Exec(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/containerd.v1.services.ContainerService/Exec",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(ContainerServiceServer).Exec(ctx, req.(*ExecRequest))
}
return interceptor(ctx, in, info, handler)
}
var _ContainerService_serviceDesc = grpc.ServiceDesc{
ServiceName: "containerd.v1.services.ContainerService",
HandlerType: (*ContainerServiceServer)(nil),
@ -441,6 +495,10 @@ var _ContainerService_serviceDesc = grpc.ServiceDesc{
MethodName: "Kill",
Handler: _ContainerService_Kill_Handler,
},
{
MethodName: "Exec",
Handler: _ContainerService_Exec_Handler,
},
},
Streams: []grpc.StreamDesc{
{
@ -767,6 +825,91 @@ func (m *EventsRequest) MarshalTo(dAtA []byte) (int, error) {
return i, nil
}
func (m *ExecRequest) 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 *ExecRequest) 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)
}
if m.Terminal {
dAtA[i] = 0x10
i++
if m.Terminal {
dAtA[i] = 1
} else {
dAtA[i] = 0
}
i++
}
if len(m.Stdin) > 0 {
dAtA[i] = 0x1a
i++
i = encodeVarintExecution(dAtA, i, uint64(len(m.Stdin)))
i += copy(dAtA[i:], m.Stdin)
}
if len(m.Stdout) > 0 {
dAtA[i] = 0x22
i++
i = encodeVarintExecution(dAtA, i, uint64(len(m.Stdout)))
i += copy(dAtA[i:], m.Stdout)
}
if len(m.Stderr) > 0 {
dAtA[i] = 0x2a
i++
i = encodeVarintExecution(dAtA, i, uint64(len(m.Stderr)))
i += copy(dAtA[i:], m.Stderr)
}
if m.Spec != nil {
dAtA[i] = 0x32
i++
i = encodeVarintExecution(dAtA, i, uint64(m.Spec.Size()))
n2, err := m.Spec.MarshalTo(dAtA[i:])
if err != nil {
return 0, err
}
i += n2
}
return i, nil
}
func (m *ExecResponse) 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 *ExecResponse) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if m.Pid != 0 {
dAtA[i] = 0x8
i++
i = encodeVarintExecution(dAtA, i, uint64(m.Pid))
}
return i, nil
}
func encodeFixed64Execution(dAtA []byte, offset int, v uint64) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
@ -929,6 +1072,44 @@ func (m *EventsRequest) Size() (n int) {
return n
}
func (m *ExecRequest) Size() (n int) {
var l int
_ = l
l = len(m.ID)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
if m.Terminal {
n += 2
}
l = len(m.Stdin)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
l = len(m.Stdout)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
l = len(m.Stderr)
if l > 0 {
n += 1 + l + sovExecution(uint64(l))
}
if m.Spec != nil {
l = m.Spec.Size()
n += 1 + l + sovExecution(uint64(l))
}
return n
}
func (m *ExecResponse) Size() (n int) {
var l int
_ = l
if m.Pid != 0 {
n += 1 + sovExecution(uint64(m.Pid))
}
return n
}
func sovExecution(x uint64) (n int) {
for {
n++
@ -1051,6 +1232,31 @@ func (this *EventsRequest) String() string {
}, "")
return s
}
func (this *ExecRequest) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&ExecRequest{`,
`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
`Terminal:` + fmt.Sprintf("%v", this.Terminal) + `,`,
`Stdin:` + fmt.Sprintf("%v", this.Stdin) + `,`,
`Stdout:` + fmt.Sprintf("%v", this.Stdout) + `,`,
`Stderr:` + fmt.Sprintf("%v", this.Stderr) + `,`,
`Spec:` + strings.Replace(fmt.Sprintf("%v", this.Spec), "Any", "google_protobuf1.Any", 1) + `,`,
`}`,
}, "")
return s
}
func (this *ExecResponse) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&ExecResponse{`,
`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
`}`,
}, "")
return s
}
func valueToStringExecution(v interface{}) string {
rv := reflect.ValueOf(v)
if rv.IsNil() {
@ -2070,6 +2276,294 @@ func (m *EventsRequest) Unmarshal(dAtA []byte) error {
}
return nil
}
func (m *ExecRequest) 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: ExecRequest: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: ExecRequest: 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
case 2:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Terminal", wireType)
}
var v int
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowExecution
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
v |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
m.Terminal = bool(v != 0)
case 3:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Stdin", 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.Stdin = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 4:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Stdout", 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.Stdout = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 5:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Stderr", 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.Stderr = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 6:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Spec", wireType)
}
var msglen int
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowExecution
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
msglen |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
if msglen < 0 {
return ErrInvalidLengthExecution
}
postIndex := iNdEx + msglen
if postIndex > l {
return io.ErrUnexpectedEOF
}
if m.Spec == nil {
m.Spec = &google_protobuf1.Any{}
}
if err := m.Spec.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
return err
}
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 *ExecResponse) 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: ExecResponse: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: ExecResponse: illegal tag %d (wire type %d)", fieldNum, wire)
}
switch fieldNum {
case 1:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Pid", wireType)
}
m.Pid = 0
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowExecution
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
m.Pid |= (uint32(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
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
@ -2180,45 +2674,49 @@ func init() {
}
var fileDescriptorExecution = []byte{
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}

14
api/services/execution/execution.proto
View file

@ -16,6 +16,7 @@ service ContainerService {
rpc List(ListRequest) returns (ListResponse);
rpc Kill(KillRequest) returns (google.protobuf.Empty);
rpc Events(EventsRequest) returns (stream containerd.v1.types.Event);
rpc Exec(ExecRequest) returns (ExecResponse);
}
message CreateRequest {
@ -66,3 +67,16 @@ message KillRequest {
message EventsRequest {
}
message ExecRequest {
string id = 1 [(gogoproto.customname) = "ID"];
bool terminal = 2;
string stdin = 3;
string stdout = 4;
string stderr = 5;
google.protobuf.Any spec = 6;
}
message ExecResponse {
uint32 pid = 1;
}

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{
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135
api/services/shim/shim.pb.go
View file

@ -195,6 +195,7 @@ func (*ExitRequest) Descriptor() ([]byte, []int) { return fileDescriptorShim, []
type KillRequest struct {
Signal uint32 `protobuf:"varint,1,opt,name=signal,proto3" json:"signal,omitempty"`
All bool `protobuf:"varint,2,opt,name=all,proto3" json:"all,omitempty"`
Pid uint32 `protobuf:"varint,3,opt,name=pid,proto3" json:"pid,omitempty"`
}
func (m *KillRequest) Reset() { *m = KillRequest{} }
@ -1141,6 +1142,11 @@ func (m *KillRequest) MarshalTo(dAtA []byte) (int, error) {
}
i++
}
if m.Pid != 0 {
dAtA[i] = 0x18
i++
i = encodeVarintShim(dAtA, i, uint64(m.Pid))
}
return i, nil
}
@ -1376,6 +1382,9 @@ func (m *KillRequest) Size() (n int) {
if m.All {
n += 2
}
if m.Pid != 0 {
n += 1 + sovShim(uint64(m.Pid))
}
return n
}
@ -1563,6 +1572,7 @@ func (this *KillRequest) String() string {
s := strings.Join([]string{`&KillRequest{`,
`Signal:` + fmt.Sprintf("%v", this.Signal) + `,`,
`All:` + fmt.Sprintf("%v", this.All) + `,`,
`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
`}`,
}, "")
return s
@ -3105,6 +3115,25 @@ func (m *KillRequest) Unmarshal(dAtA []byte) error {
}
}
m.All = bool(v != 0)
case 3:
if wireType != 0 {
return fmt.Errorf("proto: wrong wireType = %d for field Pid", wireType)
}
m.Pid = 0
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowShim
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
m.Pid |= (uint32(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
default:
iNdEx = preIndex
skippy, err := skipShim(dAtA[iNdEx:])
@ -3236,58 +3265,58 @@ func init() {
}
var fileDescriptorShim = []byte{
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}

1
api/services/shim/shim.proto
View file

@ -100,4 +100,5 @@ message ExitRequest {
message KillRequest {
uint32 signal = 1;
bool all = 2;
uint32 pid = 3;
}

2
api/types/container/container.pb.go
View file

@ -1316,7 +1316,7 @@ func init() {
var fileDescriptorContainer = []byte{
// 516 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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128
cmd/ctr/exec.go Normal file
View file

@ -0,0 +1,128 @@
package main
import (
gocontext "context"
"encoding/json"
"os"
"path/filepath"
"github.com/containerd/containerd/api/services/execution"
"github.com/crosbymichael/console"
protobuf "github.com/gogo/protobuf/types"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/urfave/cli"
)
var execCommand = cli.Command{
Name: "exec",
Usage: "execute additional processes in an existing container",
Flags: []cli.Flag{
cli.StringFlag{
Name: "id",
Usage: "id of the container",
},
cli.BoolFlag{
Name: "tty,t",
Usage: "allocate a TTY for the container",
},
},
Action: func(context *cli.Context) error {
var (
id = context.String("id")
ctx = gocontext.Background()
)
process := createProcess(context.Args(), "", context.Bool("tty"))
data, err := json.Marshal(process)
if err != nil {
return err
}
containers, err := getExecutionService(context)
if err != nil {
return err
}
events, err := containers.Events(ctx, &execution.EventsRequest{})
if err != nil {
return err
}
tmpDir, err := getTempDir(id)
if err != nil {
return err
}
defer os.RemoveAll(tmpDir)
request := &execution.ExecRequest{
ID: id,
Spec: &protobuf.Any{
TypeUrl: specs.Version,
Value: data,
},
Terminal: context.Bool("tty"),
Stdin: filepath.Join(tmpDir, "stdin"),
Stdout: filepath.Join(tmpDir, "stdout"),
Stderr: filepath.Join(tmpDir, "stderr"),
}
if request.Terminal {
con := console.Current()
defer con.Reset()
if err := con.SetRaw(); err != nil {
return err
}
}
fwg, err := prepareStdio(request.Stdin, request.Stdout, request.Stderr, request.Terminal)
if err != nil {
return err
}
response, err := containers.Exec(ctx, request)
if err != nil {
return err
}
// Ensure we read all io only if container started successfully.
defer fwg.Wait()
status, err := waitContainer(events, id, response.Pid)
if err != nil {
return err
}
if status != 0 {
return cli.NewExitError("", int(status))
}
return nil
},
}
func createProcess(args []string, cwd string, tty bool) specs.Process {
env := []string{
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
}
if tty {
env = append(env, "TERM=xterm")
}
if cwd == "" {
cwd = "/"
}
return specs.Process{
Args: args,
Env: env,
Terminal: tty,
Cwd: cwd,
NoNewPrivileges: true,
User: specs.User{
UID: 0,
GID: 0,
},
Capabilities: &specs.LinuxCapabilities{
Bounding: capabilities,
Permitted: capabilities,
Inheritable: capabilities,
Effective: capabilities,
Ambient: capabilities,
},
Rlimits: []specs.LinuxRlimit{
{
Type: "RLIMIT_NOFILE",
Hard: uint64(1024),
Soft: uint64(1024),
},
},
}
}

1
cmd/ctr/main.go
View file

@ -55,6 +55,7 @@ containerd client
killCommand,
shimCommand,
pprofCommand,
execCommand,
}
app.Before = func(context *cli.Context) error {
if context.GlobalBool("debug") {

2
cmd/ctr/run.go
View file

@ -377,7 +377,7 @@ var runCommand = cli.Command{
// Ensure we read all io only if container started successfully.
defer fwg.Wait()
status, err := waitContainer(events, response)
status, err := waitContainer(events, response.ID, response.Pid)
if err != nil {
return err
}

5
cmd/ctr/utils.go
View file

@ -155,7 +155,7 @@ func getTempDir(id string) (string, error) {
return tmpDir, nil
}
func waitContainer(events execution.ContainerService_EventsClient, response *execution.CreateResponse) (uint32, error) {
func waitContainer(events execution.ContainerService_EventsClient, id string, pid uint32) (uint32, error) {
for {
e, err := events.Recv()
if err != nil {
@ -164,8 +164,7 @@ func waitContainer(events execution.ContainerService_EventsClient, response *exe
if e.Type != container.Event_EXIT {
continue
}
if e.ID == response.ID &&
e.Pid == response.Pid {
if e.ID == id && e.Pid == pid {
return e.ExitStatus, nil
}
}

18
config.go
View file

@ -1,18 +0,0 @@
package containerd
type Process struct {
Args []string
Env []string
Cwd string
Uid int
Gid int
TTY bool
}
type Config struct {
Process Process
Hostname string
Domain string
Labels map[string]string
StopSignal int
}

19
container.go
View file

@ -23,12 +23,25 @@ type LinuxContainer interface {
Pause(context.Context) error
Resume(context.Context) error
Exec(context.Context, ExecOpts) (Process, error)
}
type ContainerStatus int
type ExecOpts struct {
Spec []byte
IO IO
}
type Process interface {
// State returns the process state
State(context.Context) (State, error)
// Kill signals a container
Kill(context.Context, uint32, bool) error
}
type Status int
const (
CreatedStatus ContainerStatus = iota + 1
CreatedStatus Status = iota + 1
RunningStatus
StoppedStatus
DeletedStatus
@ -37,7 +50,7 @@ const (
type State interface {
// Status is the current status of the container
Status() ContainerStatus
Status() Status
// Pid is the main process id for the container
Pid() uint32
}

52
linux/container.go
View file

@ -4,19 +4,21 @@ import (
"github.com/containerd/containerd"
"github.com/containerd/containerd/api/services/shim"
"github.com/containerd/containerd/api/types/container"
protobuf "github.com/gogo/protobuf/types"
specs "github.com/opencontainers/runtime-spec/specs-go"
"golang.org/x/net/context"
)
type State struct {
pid uint32
status containerd.ContainerStatus
status containerd.Status
}
func (s State) Pid() uint32 {
return s.pid
}
func (s State) Status() containerd.ContainerStatus {
func (s State) Status() containerd.Status {
return s.status
}
@ -43,7 +45,7 @@ func (c *Container) State(ctx context.Context) (containerd.State, error) {
if err != nil {
return nil, err
}
var status containerd.ContainerStatus
var status containerd.Status
switch response.Status {
case container.Status_CREATED:
status = containerd.CreatedStatus
@ -78,3 +80,47 @@ func (c *Container) Kill(ctx context.Context, signal uint32, all bool) error {
})
return err
}
func (c *Container) Exec(ctx context.Context, opts containerd.ExecOpts) (containerd.Process, error) {
request := &shim.ExecRequest{
Stdin: opts.IO.Stdin,
Stdout: opts.IO.Stdout,
Stderr: opts.IO.Stderr,
Terminal: opts.IO.Terminal,
Spec: &protobuf.Any{
TypeUrl: specs.Version,
Value: opts.Spec,
},
}
resp, err := c.shim.Exec(ctx, request)
if err != nil {
return nil, err
}
return &Process{
pid: int(resp.Pid),
c: c,
}, nil
}
type Process struct {
pid int
c *Container
}
func (p *Process) Kill(ctx context.Context, signal uint32, _ bool) error {
_, err := p.c.shim.Kill(ctx, &shim.KillRequest{
Signal: signal,
Pid: uint32(p.pid),
})
return err
}
func (p *Process) State(ctx context.Context) (containerd.State, error) {
// use the container status for the status of the process
state, err := p.c.State(ctx)
if err != nil {
return nil, err
}
state.(*State).pid = uint32(p.pid)
return state, nil
}

4
linux/shim/exec.go
View file

@ -139,3 +139,7 @@ func (e *execProcess) Resize(ws console.WinSize) error {
}
return e.console.Resize(ws)
}
func (e *execProcess) Signal(sig int) error {
return syscall.Kill(e.pid, syscall.Signal(sig))
}

4
linux/shim/init.go
View file

@ -169,3 +169,7 @@ func (p *initProcess) killAll(context context.Context) error {
All: true,
})
}
func (p *initProcess) Signal(sig int) error {
return syscall.Kill(p.pid, syscall.Signal(sig))
}

3
linux/shim/process.go
View file

@ -15,5 +15,8 @@ type process interface {
Exited(status int)
// Status returns the exit status
Status() int
// Delete deletes the process and its resourcess
Delete(context.Context) error
// Signal directly signals the process
Signal(int) error
}

47
linux/shim/service.go
View file

@ -1,11 +1,11 @@
package shim
import (
"fmt"
"os"
"sync"
"syscall"
"github.com/Sirupsen/logrus"
shimapi "github.com/containerd/containerd/api/services/shim"
"github.com/containerd/containerd/api/types/container"
"github.com/containerd/containerd/reaper"
@ -53,19 +53,7 @@ func (s *Service) Create(ctx context.Context, r *shimapi.CreateRequest) (*shimap
ExitCh: make(chan int, 1),
}
reaper.Default.Register(pid, cmd)
go func() {
status, err := reaper.Default.WaitPid(pid)
if err != nil {
logrus.WithError(err).Error("waitpid")
}
process.Exited(status)
s.events <- &container.Event{
Type: container.Event_EXIT,
ID: s.id,
Pid: uint32(pid),
ExitStatus: uint32(status),
}
}()
go s.waitExit(process, pid, cmd)
s.events <- &container.Event{
Type: container.Event_CREATE,
ID: r.ID,
@ -110,12 +98,20 @@ func (s *Service) Exec(ctx context.Context, r *shimapi.ExecRequest) (*shimapi.Ex
s.mu.Lock()
defer s.mu.Unlock()
s.execID++
reaper.Default.Lock()
process, err := newExecProcess(ctx, s.path, r, s.initProcess, s.execID)
if err != nil {
reaper.Default.Unlock()
return nil, err
}
pid := process.Pid()
s.processes[pid] = process
cmd := &reaper.Cmd{
ExitCh: make(chan int, 1),
}
reaper.Default.RegisterNL(pid, cmd)
reaper.Default.Unlock()
go s.waitExit(process, pid, cmd)
s.events <- &container.Event{
Type: container.Event_EXEC_ADDED,
ID: s.id,
@ -219,8 +215,29 @@ func (s *Service) Exit(ctx context.Context, r *shimapi.ExitRequest) (*google_pro
}
func (s *Service) Kill(ctx context.Context, r *shimapi.KillRequest) (*google_protobuf.Empty, error) {
if err := s.initProcess.Kill(ctx, r.Signal, r.All); err != nil {
if r.Pid == 0 {
if err := s.initProcess.Kill(ctx, r.Signal, r.All); err != nil {
return nil, err
}
return empty, nil
}
proc, ok := s.processes[int(r.Pid)]
if !ok {
return nil, fmt.Errorf("process does not exist %d", r.Pid)
}
if err := proc.Signal(int(r.Signal)); err != nil {
return nil, err
}
return empty, nil
}
func (s *Service) waitExit(p process, pid int, cmd *reaper.Cmd) {
status := <-cmd.ExitCh
p.Exited(status)
s.events <- &container.Event{
Type: container.Event_EXIT,
ID: s.id,
Pid: uint32(pid),
ExitStatus: uint32(status),
}
}

6
reaper/reaper.go
View file

@ -97,6 +97,12 @@ func (m *Monitor) Register(pid int, c *Cmd) {
m.Unlock()
}
// RegisterNL does not grab the lock internally
// the caller is responsible for locking the monitor
func (m *Monitor) RegisterNL(pid int, c *Cmd) {
m.cmds[pid] = c
}
func (m *Monitor) WaitPid(pid int) (int, error) {
m.Lock()
rc, ok := m.cmds[pid]

28
services/execution/service.go
View file

@ -1,6 +1,7 @@
package execution
import (
"fmt"
"sync"
"github.com/containerd/containerd"
@ -203,6 +204,33 @@ func (s *Service) Events(r *api.EventsRequest, server api.ContainerService_Event
return s.collector.forward(w)
}
func (s *Service) Exec(ctx context.Context, r *api.ExecRequest) (*api.ExecResponse, error) {
c, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
l, ok := c.(containerd.LinuxContainer)
if !ok {
return nil, fmt.Errorf("cannot exec into a non linux container")
}
process, err := l.Exec(ctx, containerd.ExecOpts{
Spec: r.Spec.Value,
IO: containerd.IO{
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Terminal: r.Terminal,
},
})
state, err := process.State(ctx)
if err != nil {
return nil, err
}
return &api.ExecResponse{
Pid: state.Pid(),
}, nil
}
func (s *Service) getContainer(id string) (containerd.Container, error) {
s.mu.Lock()
c, ok := s.containers[id]

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

@ -447,7 +447,7 @@ func init() {
var fileDescriptorRecord = []byte{
// 304 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x72, 0x49, 0xcf, 0x2c, 0xc9,
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x72, 0x49, 0xcf, 0x2c, 0xc9,
0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xce, 0xcf, 0x2b, 0x49, 0xcc, 0xcc, 0x4b, 0x2d,
0x4a, 0x41, 0x66, 0x16, 0xe7, 0x25, 0x16, 0x14, 0x67, 0xe4, 0x97, 0xe8, 0x17, 0x97, 0xe4, 0x17,
0x25, 0xa6, 0xa7, 0xea, 0x17, 0x14, 0xe5, 0x97, 0xe4, 0xeb, 0x17, 0xa5, 0x26, 0xe7, 0x17, 0xa5,