api/types/mount: bring back the mount type

The mount type is used across common GRPC services to express a deferred
access of a filesystem. Right now, they are generated by snapshotters,
but eventually, they can be passed for containers for creation at
runtime. With this flow, we can separate the generation and use of a
root container filesystem.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2017-02-09 18:02:48 -08:00
parent 696e88c813
commit a9edb0d230
No known key found for this signature in database
GPG Key ID: 67B3DED84EDC823F
3 changed files with 559 additions and 0 deletions

3
api/types/mount/gen.go Normal file
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@ -0,0 +1,3 @@
package mount
//go:generate protoc -I.:../../../vendor:../../../vendor/github.com/gogo/protobuf:../../../../../..:/usr/local/include --gogoctrd_out=plugins=grpc,import_path=github.com/docker/containerd/api/types/mount,Mgogoproto/gogo.proto=github.com/gogo/protobuf/gogoproto,Mgoogle/protobuf/descriptor.proto=github.com/gogo/protobuf/protoc-gen-gogo/descriptor:. mount.proto

529
api/types/mount/mount.pb.go Normal file
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@ -0,0 +1,529 @@
// Code generated by protoc-gen-gogo.
// source: mount.proto
// DO NOT EDIT!
/*
Package mount is a generated protocol buffer package.
It is generated from these files:
mount.proto
It has these top-level messages:
Mount
*/
package mount
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import strings "strings"
import github_com_gogo_protobuf_proto "github.com/gogo/protobuf/proto"
import sort "sort"
import strconv "strconv"
import reflect "reflect"
import io "io"
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
// Mount describes mounts for a container.
//
// This type is the lingua franca of ContainerD. All services provide mounts
// to be used with the container at creation time.
//
// The Mount type follows the structure of the mount syscall, including a type,
// source, target and options.
type Mount struct {
// Type defines the nature of the mount.
Type string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
// Source specifies the name of the mount. Depending on mount type, this
// may be a volume name or a host path, or even ignored.
Source string `protobuf:"bytes,2,opt,name=source,proto3" json:"source,omitempty"`
// Target path in container
Target string `protobuf:"bytes,3,opt,name=target,proto3" json:"target,omitempty"`
// Options specifies zero or more fstab style mount options.
Options []string `protobuf:"bytes,4,rep,name=options" json:"options,omitempty"`
}
func (m *Mount) Reset() { *m = Mount{} }
func (*Mount) ProtoMessage() {}
func (*Mount) Descriptor() ([]byte, []int) { return fileDescriptorMount, []int{0} }
func init() {
proto.RegisterType((*Mount)(nil), "containerd.v1.types.Mount")
}
func (this *Mount) GoString() string {
if this == nil {
return "nil"
}
s := make([]string, 0, 8)
s = append(s, "&mount.Mount{")
s = append(s, "Type: "+fmt.Sprintf("%#v", this.Type)+",\n")
s = append(s, "Source: "+fmt.Sprintf("%#v", this.Source)+",\n")
s = append(s, "Target: "+fmt.Sprintf("%#v", this.Target)+",\n")
s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
s = append(s, "}")
return strings.Join(s, "")
}
func valueToGoStringMount(v interface{}, typ string) string {
rv := reflect.ValueOf(v)
if rv.IsNil() {
return "nil"
}
pv := reflect.Indirect(rv).Interface()
return fmt.Sprintf("func(v %v) *%v { return &v } ( %#v )", typ, typ, pv)
}
func extensionToGoStringMount(m github_com_gogo_protobuf_proto.Message) string {
e := github_com_gogo_protobuf_proto.GetUnsafeExtensionsMap(m)
if e == nil {
return "nil"
}
s := "proto.NewUnsafeXXX_InternalExtensions(map[int32]proto.Extension{"
keys := make([]int, 0, len(e))
for k := range e {
keys = append(keys, int(k))
}
sort.Ints(keys)
ss := []string{}
for _, k := range keys {
ss = append(ss, strconv.Itoa(k)+": "+e[int32(k)].GoString())
}
s += strings.Join(ss, ",") + "})"
return s
}
func (m *Mount) 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 *Mount) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.Type) > 0 {
dAtA[i] = 0xa
i++
i = encodeVarintMount(dAtA, i, uint64(len(m.Type)))
i += copy(dAtA[i:], m.Type)
}
if len(m.Source) > 0 {
dAtA[i] = 0x12
i++
i = encodeVarintMount(dAtA, i, uint64(len(m.Source)))
i += copy(dAtA[i:], m.Source)
}
if len(m.Target) > 0 {
dAtA[i] = 0x1a
i++
i = encodeVarintMount(dAtA, i, uint64(len(m.Target)))
i += copy(dAtA[i:], m.Target)
}
if len(m.Options) > 0 {
for _, s := range m.Options {
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
}
func encodeFixed64Mount(dAtA []byte, offset int, v uint64) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
dAtA[offset+2] = uint8(v >> 16)
dAtA[offset+3] = uint8(v >> 24)
dAtA[offset+4] = uint8(v >> 32)
dAtA[offset+5] = uint8(v >> 40)
dAtA[offset+6] = uint8(v >> 48)
dAtA[offset+7] = uint8(v >> 56)
return offset + 8
}
func encodeFixed32Mount(dAtA []byte, offset int, v uint32) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
dAtA[offset+2] = uint8(v >> 16)
dAtA[offset+3] = uint8(v >> 24)
return offset + 4
}
func encodeVarintMount(dAtA []byte, offset int, v uint64) int {
for v >= 1<<7 {
dAtA[offset] = uint8(v&0x7f | 0x80)
v >>= 7
offset++
}
dAtA[offset] = uint8(v)
return offset + 1
}
func (m *Mount) Size() (n int) {
var l int
_ = l
l = len(m.Type)
if l > 0 {
n += 1 + l + sovMount(uint64(l))
}
l = len(m.Source)
if l > 0 {
n += 1 + l + sovMount(uint64(l))
}
l = len(m.Target)
if l > 0 {
n += 1 + l + sovMount(uint64(l))
}
if len(m.Options) > 0 {
for _, s := range m.Options {
l = len(s)
n += 1 + l + sovMount(uint64(l))
}
}
return n
}
func sovMount(x uint64) (n int) {
for {
n++
x >>= 7
if x == 0 {
break
}
}
return n
}
func sozMount(x uint64) (n int) {
return sovMount(uint64((x << 1) ^ uint64((int64(x) >> 63))))
}
func (this *Mount) String() string {
if this == nil {
return "nil"
}
s := strings.Join([]string{`&Mount{`,
`Type:` + fmt.Sprintf("%v", this.Type) + `,`,
`Source:` + fmt.Sprintf("%v", this.Source) + `,`,
`Target:` + fmt.Sprintf("%v", this.Target) + `,`,
`Options:` + fmt.Sprintf("%v", this.Options) + `,`,
`}`,
}, "")
return s
}
func valueToStringMount(v interface{}) string {
rv := reflect.ValueOf(v)
if rv.IsNil() {
return "nil"
}
pv := reflect.Indirect(rv).Interface()
return fmt.Sprintf("*%v", pv)
}
func (m *Mount) 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 ErrIntOverflowMount
}
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: Mount: wiretype end group for non-group")
}
if fieldNum <= 0 {
return fmt.Errorf("proto: Mount: illegal tag %d (wire type %d)", fieldNum, wire)
}
switch fieldNum {
case 1:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowMount
}
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 ErrInvalidLengthMount
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Type = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 2:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Source", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowMount
}
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 ErrInvalidLengthMount
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Source = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 3:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Target", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowMount
}
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 ErrInvalidLengthMount
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Target = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 4:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Options", wireType)
}
var stringLen uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowMount
}
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 ErrInvalidLengthMount
}
postIndex := iNdEx + intStringLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Options = append(m.Options, string(dAtA[iNdEx:postIndex]))
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipMount(dAtA[iNdEx:])
if err != nil {
return err
}
if skippy < 0 {
return ErrInvalidLengthMount
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
iNdEx += skippy
}
}
if iNdEx > l {
return io.ErrUnexpectedEOF
}
return nil
}
func skipMount(dAtA []byte) (n int, err error) {
l := len(dAtA)
iNdEx := 0
for iNdEx < l {
var wire uint64
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return 0, ErrIntOverflowMount
}
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
wireType := int(wire & 0x7)
switch wireType {
case 0:
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return 0, ErrIntOverflowMount
}
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
iNdEx++
if dAtA[iNdEx-1] < 0x80 {
break
}
}
return iNdEx, nil
case 1:
iNdEx += 8
return iNdEx, nil
case 2:
var length int
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return 0, ErrIntOverflowMount
}
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
length |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
iNdEx += length
if length < 0 {
return 0, ErrInvalidLengthMount
}
return iNdEx, nil
case 3:
for {
var innerWire uint64
var start int = iNdEx
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return 0, ErrIntOverflowMount
}
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
innerWire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
innerWireType := int(innerWire & 0x7)
if innerWireType == 4 {
break
}
next, err := skipMount(dAtA[start:])
if err != nil {
return 0, err
}
iNdEx = start + next
}
return iNdEx, nil
case 4:
return iNdEx, nil
case 5:
iNdEx += 4
return iNdEx, nil
default:
return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
}
}
panic("unreachable")
}
var (
ErrInvalidLengthMount = fmt.Errorf("proto: negative length found during unmarshaling")
ErrIntOverflowMount = fmt.Errorf("proto: integer overflow")
)
func init() { proto.RegisterFile("mount.proto", fileDescriptorMount) }
var fileDescriptorMount = []byte{
// 196 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0xce, 0xcd, 0x2f, 0xcd,
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0x4d, 0x2a, 0x4d, 0x03, 0xf3, 0xc0, 0x1c, 0x30, 0x0b, 0x62, 0x86, 0x52, 0x2a, 0x17, 0xab, 0x2f,
0xc8, 0x48, 0x21, 0x21, 0x2e, 0x16, 0x90, 0x01, 0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0x9c, 0x41, 0x60,
0xb6, 0x90, 0x18, 0x17, 0x5b, 0x71, 0x7e, 0x69, 0x51, 0x72, 0xaa, 0x04, 0x13, 0x58, 0x14, 0xca,
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0xde, 0x00, 0x00, 0x00,
}

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@ -0,0 +1,27 @@
syntax = "proto3";
package containerd.v1.types;
import "github.com/gogo/protobuf/gogoproto/gogo.proto";
// Mount describes mounts for a container.
//
// This type is the lingua franca of ContainerD. All services provide mounts
// to be used with the container at creation time.
//
// The Mount type follows the structure of the mount syscall, including a type,
// source, target and options.
message Mount {
// Type defines the nature of the mount.
string type = 1;
// Source specifies the name of the mount. Depending on mount type, this
// may be a volume name or a host path, or even ignored.
string source = 2;
// Target path in container
string target = 3;
// Options specifies zero or more fstab style mount options.
repeated string options = 4;
}