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Add container start and supervisor 

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby 2016-12-05 15:38:32 -08:00
parent e620833c9e
commit 21a53c1d70
11 changed files with 380 additions and 139 deletions
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316
api/execution/container.pb.go
View File

@ -55,6 +55,14 @@ func (x Status) String() string {
}
func (Status) EnumDescriptor() ([]byte, []int) { return fileDescriptorContainer, []int{0} }
type StartContainerRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
}
func (m *StartContainerRequest) Reset() { *m = StartContainerRequest{} }
func (*StartContainerRequest) ProtoMessage() {}
func (*StartContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{0} }
type StartProcessRequest struct {
ContainerId string `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
Process *Process `protobuf:"bytes,2,opt,name=process" json:"process,omitempty"`
@ -65,7 +73,7 @@ type StartProcessRequest struct {
func (m *StartProcessRequest) Reset() { *m = StartProcessRequest{} }
func (*StartProcessRequest) ProtoMessage() {}
func (*StartProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{0} }
func (*StartProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{1} }
type StartProcessResponse struct {
Process *Process `protobuf:"bytes,1,opt,name=process" json:"process,omitempty"`
@ -73,7 +81,7 @@ type StartProcessResponse struct {
func (m *StartProcessResponse) Reset() { *m = StartProcessResponse{} }
func (*StartProcessResponse) ProtoMessage() {}
func (*StartProcessResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{1} }
func (*StartProcessResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{2} }
type Container struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@ -84,7 +92,7 @@ type Container struct {
func (m *Container) Reset() { *m = Container{} }
func (*Container) ProtoMessage() {}
func (*Container) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{2} }
func (*Container) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{3} }
type Process struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@ -100,7 +108,7 @@ type Process struct {
func (m *Process) Reset() { *m = Process{} }
func (*Process) ProtoMessage() {}
func (*Process) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{3} }
func (*Process) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{4} }
type User struct {
Uid uint32 `protobuf:"varint,1,opt,name=uid,proto3" json:"uid,omitempty"`
@ -110,7 +118,7 @@ type User struct {
func (m *User) Reset() { *m = User{} }
func (*User) ProtoMessage() {}
func (*User) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{4} }
func (*User) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{5} }
type GetContainerRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@ -118,7 +126,7 @@ type GetContainerRequest struct {
func (m *GetContainerRequest) Reset() { *m = GetContainerRequest{} }
func (*GetContainerRequest) ProtoMessage() {}
func (*GetContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{5} }
func (*GetContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{6} }
type GetContainerResponse struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -126,7 +134,7 @@ type GetContainerResponse struct {
func (m *GetContainerResponse) Reset() { *m = GetContainerResponse{} }
func (*GetContainerResponse) ProtoMessage() {}
func (*GetContainerResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{6} }
func (*GetContainerResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{7} }
type UpdateContainerRequest struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -135,7 +143,7 @@ type UpdateContainerRequest struct {
func (m *UpdateContainerRequest) Reset() { *m = UpdateContainerRequest{} }
func (*UpdateContainerRequest) ProtoMessage() {}
func (*UpdateContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{7} }
func (*UpdateContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{8} }
type PauseContainerRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@ -143,7 +151,7 @@ type PauseContainerRequest struct {
func (m *PauseContainerRequest) Reset() { *m = PauseContainerRequest{} }
func (*PauseContainerRequest) ProtoMessage() {}
func (*PauseContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{8} }
func (*PauseContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{9} }
type ResumeContainerRequest struct {
ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@ -151,7 +159,7 @@ type ResumeContainerRequest struct {
func (m *ResumeContainerRequest) Reset() { *m = ResumeContainerRequest{} }
func (*ResumeContainerRequest) ProtoMessage() {}
func (*ResumeContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{9} }
func (*ResumeContainerRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{10} }
type GetProcessRequest struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -160,7 +168,7 @@ type GetProcessRequest struct {
func (m *GetProcessRequest) Reset() { *m = GetProcessRequest{} }
func (*GetProcessRequest) ProtoMessage() {}
func (*GetProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{10} }
func (*GetProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{11} }
type GetProcessResponse struct {
Process *Process `protobuf:"bytes,1,opt,name=process" json:"process,omitempty"`
@ -168,7 +176,7 @@ type GetProcessResponse struct {
func (m *GetProcessResponse) Reset() { *m = GetProcessResponse{} }
func (*GetProcessResponse) ProtoMessage() {}
func (*GetProcessResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{11} }
func (*GetProcessResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{12} }
type SignalProcessRequest struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -178,7 +186,7 @@ type SignalProcessRequest struct {
func (m *SignalProcessRequest) Reset() { *m = SignalProcessRequest{} }
func (*SignalProcessRequest) ProtoMessage() {}
func (*SignalProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{12} }
func (*SignalProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{13} }
type DeleteProcessRequest struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -187,7 +195,7 @@ type DeleteProcessRequest struct {
func (m *DeleteProcessRequest) Reset() { *m = DeleteProcessRequest{} }
func (*DeleteProcessRequest) ProtoMessage() {}
func (*DeleteProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{13} }
func (*DeleteProcessRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{14} }
type ListProcessesRequest struct {
Container *Container `protobuf:"bytes,1,opt,name=container" json:"container,omitempty"`
@ -195,7 +203,7 @@ type ListProcessesRequest struct {
func (m *ListProcessesRequest) Reset() { *m = ListProcessesRequest{} }
func (*ListProcessesRequest) ProtoMessage() {}
func (*ListProcessesRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{14} }
func (*ListProcessesRequest) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{15} }
type ListProcessesResponse struct {
Processes []*Process `protobuf:"bytes,1,rep,name=processes" json:"processes,omitempty"`
@ -203,9 +211,10 @@ type ListProcessesResponse struct {
func (m *ListProcessesResponse) Reset() { *m = ListProcessesResponse{} }
func (*ListProcessesResponse) ProtoMessage() {}
func (*ListProcessesResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{15} }
func (*ListProcessesResponse) Descriptor() ([]byte, []int) { return fileDescriptorContainer, []int{16} }
func init() {
proto.RegisterType((*StartContainerRequest)(nil), "containerd.v1.StartContainerRequest")
proto.RegisterType((*StartProcessRequest)(nil), "containerd.v1.StartProcessRequest")
proto.RegisterType((*StartProcessResponse)(nil), "containerd.v1.StartProcessResponse")
proto.RegisterType((*Container)(nil), "containerd.v1.Container")
@ -224,6 +233,16 @@ func init() {
proto.RegisterType((*ListProcessesResponse)(nil), "containerd.v1.ListProcessesResponse")
proto.RegisterEnum("containerd.v1.Status", Status_name, Status_value)
}
func (this *StartContainerRequest) GoString() string {
if this == nil {
return "nil"
}
s := make([]string, 0, 5)
s = append(s, "&execution.StartContainerRequest{")
s = append(s, "ID: "+fmt.Sprintf("%#v", this.ID)+",\n")
s = append(s, "}")
return strings.Join(s, "")
}
func (this *StartProcessRequest) GoString() string {
if this == nil {
return "nil"
@ -476,6 +495,7 @@ type ContainerServiceClient interface {
Update(ctx context.Context, in *UpdateContainerRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Pause(ctx context.Context, in *PauseContainerRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Resume(ctx context.Context, in *ResumeContainerRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
Start(ctx context.Context, in *StartContainerRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
StartProcess(ctx context.Context, in *StartProcessRequest, opts ...grpc.CallOption) (*StartProcessResponse, error)
GetProcess(ctx context.Context, in *GetProcessRequest, opts ...grpc.CallOption) (*GetProcessResponse, error)
SignalProcess(ctx context.Context, in *SignalProcessRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
@ -527,6 +547,15 @@ func (c *containerServiceClient) Resume(ctx context.Context, in *ResumeContainer
return out, nil
}
func (c *containerServiceClient) Start(ctx context.Context, in *StartContainerRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
out := new(google_protobuf.Empty)
err := grpc.Invoke(ctx, "/containerd.v1.ContainerService/Start", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *containerServiceClient) StartProcess(ctx context.Context, in *StartProcessRequest, opts ...grpc.CallOption) (*StartProcessResponse, error) {
out := new(StartProcessResponse)
err := grpc.Invoke(ctx, "/containerd.v1.ContainerService/StartProcess", in, out, c.cc, opts...)
@ -579,6 +608,7 @@ type ContainerServiceServer interface {
Update(context.Context, *UpdateContainerRequest) (*google_protobuf.Empty, error)
Pause(context.Context, *PauseContainerRequest) (*google_protobuf.Empty, error)
Resume(context.Context, *ResumeContainerRequest) (*google_protobuf.Empty, error)
Start(context.Context, *StartContainerRequest) (*google_protobuf.Empty, error)
StartProcess(context.Context, *StartProcessRequest) (*StartProcessResponse, error)
GetProcess(context.Context, *GetProcessRequest) (*GetProcessResponse, error)
SignalProcess(context.Context, *SignalProcessRequest) (*google_protobuf.Empty, error)
@ -662,6 +692,24 @@ func _ContainerService_Resume_Handler(srv interface{}, ctx context.Context, dec
return interceptor(ctx, in, info, handler)
}
func _ContainerService_Start_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(StartContainerRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(ContainerServiceServer).Start(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/containerd.v1.ContainerService/Start",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(ContainerServiceServer).Start(ctx, req.(*StartContainerRequest))
}
return interceptor(ctx, in, info, handler)
}
func _ContainerService_StartProcess_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(StartProcessRequest)
if err := dec(in); err != nil {
@ -772,6 +820,10 @@ var _ContainerService_serviceDesc = grpc.ServiceDesc{
MethodName: "Resume",
Handler: _ContainerService_Resume_Handler,
},
{
MethodName: "Start",
Handler: _ContainerService_Start_Handler,
},
{
MethodName: "StartProcess",
Handler: _ContainerService_StartProcess_Handler,
@ -797,6 +849,30 @@ var _ContainerService_serviceDesc = grpc.ServiceDesc{
Metadata: "container.proto",
}
func (m *StartContainerRequest) 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 *StartContainerRequest) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.ID) > 0 {
dAtA[i] = 0xa
i++
i = encodeVarintContainer(dAtA, i, uint64(len(m.ID)))
i += copy(dAtA[i:], m.ID)
}
return i, nil
}
func (m *StartProcessRequest) Marshal() (dAtA []byte, err error) {
size := m.Size()
dAtA = make([]byte, size)
@ -1423,6 +1499,16 @@ func encodeVarintContainer(dAtA []byte, offset int, v uint64) int {
dAtA[offset] = uint8(v)
return offset + 1
}
func (m *StartContainerRequest) Size() (n int) {
var l int
_ = l
l = len(m.ID)
if l > 0 {
n += 1 + l + sovContainer(uint64(l))
}
return n
}
func (m *StartProcessRequest) Size() (n int) {
var l int
_ = l
@ -1684,6 +1770,16 @@ func sovContainer(x uint64) (n int) {
func sozContainer(x uint64) (n int) {
return sovContainer(uint64((x << 1) ^ uint64((int64(x) >> 63))))
}
func (this *StartContainerRequest) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&StartContainerRequest{`,
`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
`}`,
}, "")
return s
}
func (this *StartProcessRequest) String() string {
if this == nil {
return "nil"
@ -1874,6 +1970,85 @@ func valueToStringContainer(v interface{}) string {
pv := reflect.Indirect(rv).Interface()
return fmt.Sprintf("*%v", pv)
}
func (m *StartContainerRequest) 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 ErrIntOverflowContainer
}
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: StartContainerRequest: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: StartContainerRequest: 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 ErrIntOverflowContainer
}
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 ErrInvalidLengthContainer
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.ID = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipContainer(dAtA[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthContainer
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
iNdEx += skippy
}
}
if iNdEx > l {
return io.ErrUnexpectedEOF
}
return nil
}
func (m *StartProcessRequest) Unmarshal(dAtA []byte) error {
l := len(dAtA)
iNdEx := 0
@ -3882,58 +4057,59 @@ var (
func init() { proto.RegisterFile("container.proto", fileDescriptorContainer) }
var fileDescriptorContainer = []byte{
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// 855 bytes of a gzipped FileDescriptorProto
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}

5
api/execution/container.proto
View File

@ -10,6 +10,7 @@ service ContainerService {
rpc Update(UpdateContainerRequest) returns (google.protobuf.Empty);
rpc Pause(PauseContainerRequest) returns (google.protobuf.Empty);
rpc Resume(ResumeContainerRequest) returns (google.protobuf.Empty);
rpc Start(StartContainerRequest) returns (google.protobuf.Empty);
rpc StartProcess(StartProcessRequest) returns (StartProcessResponse);
rpc GetProcess(GetProcessRequest) returns (GetProcessResponse);
@ -18,6 +19,10 @@ service ContainerService {
rpc ListProcesses(ListProcessesRequest) returns (ListProcessesResponse);
}
message StartContainerRequest {
string id = 1 [(gogoproto.customname) = "ID"];
}
message StartProcessRequest {
string container_id = 1;
Process process = 2;

1
api/execution/execution.pb.go
View File

@ -16,6 +16,7 @@
DeleteContainerResponse
ListContainersRequest
ListContainersResponse
StartContainerRequest
StartProcessRequest
StartProcessResponse
Container

58
execution/container.go
View File

@ -1,14 +1,64 @@
package execution
import "fmt"
func NewContainer(stateRoot, id, bundle string) (*Container, error) {
stateDir, err := NewStateDir(stateRoot, id)
if err != nil {
return nil, err
}
return &Container{
id: id,
bundle: bundle,
stateDir: stateDir,
processes: make(map[string]Process),
}, nil
}
func LoadContainer(dir StateDir, id, bundle string, initPid int) *Container {
return &Container{
id: id,
stateDir: dir,
bundle: bundle,
initPid: initPid,
processes: make(map[string]Process),
}
}
type Container struct {
ID string
Bundle string
StateDir StateDir
id string
bundle string
stateDir StateDir
initPid int
processes map[string]Process
}
func (c *Container) AddProcess(p Process) {
func (c *Container) ID() string {
return c.id
}
func (c *Container) Bundle() string {
return c.bundle
}
func (c *Container) StateDir() StateDir {
return c.stateDir
}
func (c *Container) Wait() (uint32, error) {
for _, p := range c.processes {
if p.Pid() == c.initPid {
return p.Wait()
}
}
return nil, fmt.Errorf("no init process")
}
func (c *Container) AddProcess(p Process, isInit bool) {
if isInit {
c.initPid = p.Pid()
}
c.processes[p.ID()] = p
}

1
execution/executor.go
View File

@ -29,6 +29,7 @@ type Executor interface {
List() ([]*Container, error)
Load(id string) (*Container, error)
Delete(*Container) error
Start(*Container) error
StartProcess(*Container, CreateProcessOpts) (Process, error)
SignalProcess(*Container, os.Signal) error

64
execution/executors/oci/oci.go
View File

@ -29,21 +29,19 @@ type OCIRuntime struct {
runc *runc.Runc
}
func (r *OCIRuntime) Create(id string, o execution.CreateOpts) (*execution.Container, error) {
var err error
stateDir, err := NewStateDir(r.root, id)
if err != nil {
func (r *OCIRuntime) Create(id string, o execution.CreateOpts) (container *execution.Container, err error) {
if container, err = execution.NewContainer(r.root, id, o.Bundle); err != nil {
return nil, err
}
initStateDir, err := stateDir.NewProcess()
if err != nil {
return nil, err
}
// /run/runc/redis/1/pid
pidFile := filepath.Join(initStateDir, "pid")
defer func() {
if err != nil {
container.StateDir().Delete()
}
}()
var (
initDir = container.StateDir().NewProcess()
pidFile = filepath.Join(initDir, "pid")
)
err = r.runc.Create(id, o.Bundle, &runc.CreateOpts{
Pidfile: pidfile,
Stdin: o.Stdin,
@ -55,40 +53,40 @@ func (r *OCIRuntime) Create(id string, o execution.CreateOpts) (*execution.Conta
}
pid, err := runc.ReadPifFile(pidfile)
if err != nil {
// TODO: kill the container if we are going to return
return nil, err
}
process, err := newProcess(pid)
process, err := newProcess(filepath.Base(initDir), pid)
if err != nil {
return nil, err
}
container := &execution.Container{
ID: id,
Bundle: o.Bundle,
StateDir: stateDir,
}
container.AddProcess(process)
container.AddProcess(process, true)
return container, nil
}
func (r *OCIRuntime) load(runcC *runc.Container) (*execution.Container, error) {
container := &execution.Container{
ID: runcC.ID,
Bundle: runcC.Bundle,
StateDir: StateDir(filepath.Join(r.root, runcC.ID)),
}
container := execution.LoadContainer(
execution.StateDir(filepath.Join(r.root, runcC.ID)),
runcC.ID,
runcC.Bundle,
)
process, err := newProcess(runcC.Pid)
dirs, err := ioutil.ReadDir(filepath.Join(container.StateDir().Processes()))
if err != nil {
return nil, err
}
container.AddProcess(process)
// /run/containerd/container-id/processess/process-id
dirs, err := ioutil.ReadDir(filepath.Join(container.Root))
if err != nil {
return nil, err
for _, d := range dirs {
pid, err := runc.ReadPidFile(filepath.Join(d, "pid"))
if err != nil {
return nil, err
}
process, err := newProcess(filepath.Base(d), pid)
if err != nil {
return nil, err
}
container.AddProcess(process, pid == runcC.Pid)
}
return container, nil
@ -171,7 +169,7 @@ func (r *OCIRuntime) StartProcess(c *execution.Container, o CreateProcessOpts) (
return nil, err
}
container.AddProcess(process)
container.AddProcess(process, false)
return process, nil
}

9
execution/executors/oci/process.go
View File

@ -7,20 +7,26 @@ import (
"github.com/docker/containerd/execution"
)
func newProcess(pid int) (execution.Process, error) {
func newProcess(id string, pid int) (execution.Process, error) {
proc, err := os.FindProcess(pid)
if err != nil {
return nil, err
}
return &process{
id: id,
proc: proc,
}, nil
}
type process struct {
id string
proc *os.Process
}
func (p *process) ID() string {
return p.id
}
func (p *process) Pid() int {
return p.proc.Pid
}
@ -30,6 +36,7 @@ func (p *process) Wait() (uint32, error) {
if err != nil {
return 0, nil
}
// TODO: implement kill-all if we are the init pid
return uint32(state.Sys().(syscall.WaitStatus).ExitStatus()), nil
}

11
execution/process.go
View File

@ -1,18 +1,11 @@
package execution
import (
"os"
"github.com/opencontainers/runtime-spec/specs-go"
)
import "os"
type Process interface {
ID() string
Pid() int64
Spec() *specs.Process
Start() error
Status() (Status, error)
//Spec() *specs.Process
Wait() (uint32, error)
Signal(os.Signal) error
}

9
execution/service.go
View File

@ -99,6 +99,14 @@ func (s *Service) Resume(ctx context.Context, r *api.ResumeContainerRequest) (*g
return nil, s.executor.Resume(container)
}
func (s *Service) Start(ctx context.Context, r *api.StartContainerRequest) (*google_protobuf.Empty, error) {
container, err := s.executor.Load(r.ID)
if err != nil {
return nil, err
}
return nil, s.executor.Start(container)
}
func (s *Service) StartProcess(ctx context.Context, r *api.StartProcessRequest) (*api.StartProcessResponse, error) {
container, err := s.executor.Load(r.ContainerId)
if err != nil {
@ -117,7 +125,6 @@ func (s *Service) StartProcess(ctx context.Context, r *api.StartProcessRequest)
if err != nil {
return nil, err
}
s.supervisor.Add(process)
return &api.StartProcessResponse{

33
execution/statedir.go
View File

@ -12,17 +12,13 @@ type StateDir string
func NewStateDir(root, id string) (StateDir, error) {
path := filepath.Join(root, id)
err := os.Mkdir(path, 0700)
if err != nil {
if err := os.Mkdir(path, 0700); err != nil {
return "", err
}
err = os.Mkdir(filepath.Join(path, processesDir), 0700)
if err != nil {
if err := os.Mkdir(filepath.Join(path, processesDir), 0700); err != nil {
os.RemoveAll(path)
return "", err
}
return StateDir(path), err
}
@ -30,15 +26,8 @@ func (s StateDir) Delete() error {
return os.RemoveAll(string(s))
}
func (s StateDir) NewProcess(id string) (string, error) {
// TODO: generate id
newPath := filepath.Join(string(s), "1")
err := os.Mkdir(newPath, 0755)
if err != nil {
return "", err
}
return newPath, nil
func (s StateDir) NewProcess() (string, error) {
return ioutil.TempDir(s.processDir(), "")
}
func (s StateDir) ProcessDir(id string) string {
@ -46,23 +35,25 @@ func (s StateDir) ProcessDir(id string) string {
}
func (s StateDir) DeleteProcess(id string) error {
return os.RemoveAll(filepath.Join(string(s), id))
return os.RemoveAll(filepath.Join(s.processDir(), id))
}
func (s StateDir) Processes() ([]string, error) {
basepath := filepath.Join(string(s), processesDir)
dirs, err := ioutil.ReadDir(basepath)
procsDir := s.processDir()
dirs, err := ioutil.ReadDir(procsDir)
if err != nil {
return nil, err
}
paths := make([]string, 0)
for _, d := range dirs {
if d.IsDir() {
paths = append(paths, filepath.Join(basepath, d.Name()))
paths = append(paths, filepath.Join(procsDir, d.Name()))
}
}
return paths, nil
}
func (s StateDir) processDir() string {
return filepath.Join(string(s), processesDir)
}

12
execution/supervisor.go Normal file
View File

@ -0,0 +1,12 @@
package execution
type Supervisor struct {
}
type waiter interface {
Wait() (uint32, error)
}
func (s *Supervisor) Add(w waiter) {
}