
What started out as a simple PR to remove the "Readonly" column became an adventure to add a proper type for a "View" snapshot. The short story here is that we now get the following output: ``` $ sudo ctr snapshot ls ID PARENT KIND sha256:08c2295a7fa5c220b0f60c994362d290429ad92f6e0235509db91582809442f3 Committed testing4 sha256:08c2295a7fa5c220b0f60c994362d290429ad92f6e0235509db91582809442f3 Active ``` In pursuing this output, it was found that the idea of having "readonly" as an attribute on all snapshots was redundant. For committed, they are always readonly, as they are not accessible without an active snapshot. For active snapshots that were views, we'd have to check the type before interpreting "readonly". With this PR, this is baked fully into the kind of snapshot. When `Snapshotter.View` is called, the kind of snapshot is `KindView`, and the storage system reflects this end to end. Unfortunately, this will break existing users. There is no migration, so they will have to wipe `/var/lib/containerd` and recreate everything. However, this is deemed worthwhile at this point, as we won't have to judge validity of the "Readonly" field when new snapshot types are added. Signed-off-by: Stephen J Day <stephen.day@docker.com>
507 lines
13 KiB
Go
507 lines
13 KiB
Go
// Code generated by protoc-gen-gogo.
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// source: github.com/containerd/containerd/snapshot/storage/proto/record.proto
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// DO NOT EDIT!
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/*
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Package proto is a generated protocol buffer package.
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It is generated from these files:
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github.com/containerd/containerd/snapshot/storage/proto/record.proto
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It has these top-level messages:
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Snapshot
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*/
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package proto
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import proto1 "github.com/gogo/protobuf/proto"
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import fmt "fmt"
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import math "math"
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import _ "github.com/gogo/protobuf/gogoproto"
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import strings "strings"
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import reflect "reflect"
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import io "io"
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto1.Marshal
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var _ = fmt.Errorf
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var _ = math.Inf
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// This is a compile-time assertion to ensure that this generated file
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// is compatible with the proto package it is being compiled against.
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// A compilation error at this line likely means your copy of the
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// proto package needs to be updated.
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const _ = proto1.GoGoProtoPackageIsVersion2 // please upgrade the proto package
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type Kind int32
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const (
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KindUnknown Kind = 0
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KindView Kind = 1
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KindActive Kind = 2
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KindCommitted Kind = 3
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)
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var Kind_name = map[int32]string{
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0: "UNKNOWN",
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1: "VIEW",
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2: "ACTIVE",
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3: "COMMITTED",
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}
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var Kind_value = map[string]int32{
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"UNKNOWN": 0,
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"VIEW": 1,
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"ACTIVE": 2,
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"COMMITTED": 3,
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}
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func (x Kind) String() string {
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return proto1.EnumName(Kind_name, int32(x))
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}
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func (Kind) EnumDescriptor() ([]byte, []int) { return fileDescriptorRecord, []int{0} }
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// Snapshot defines the storage type for a snapshot in the
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// metadata store.
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type Snapshot struct {
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ID uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
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Parent string `protobuf:"bytes,2,opt,name=parent,proto3" json:"parent,omitempty"`
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Kind Kind `protobuf:"varint,4,opt,name=kind,proto3,enum=containerd.snapshot.v1.Kind" json:"kind,omitempty"`
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// inodes stores the number inodes in use for the snapshot.
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//
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// Only valid for committed snapshots.
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Inodes int64 `protobuf:"varint,6,opt,name=inodes,proto3" json:"inodes,omitempty"`
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// Size reports the disk used by the snapshot, excluding the parents.
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//
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// Only valid for committed snapshots, active snapshots must read the
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// current usage from the disk.
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Size_ int64 `protobuf:"varint,7,opt,name=size,proto3" json:"size,omitempty"`
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}
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func (m *Snapshot) Reset() { *m = Snapshot{} }
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func (*Snapshot) ProtoMessage() {}
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func (*Snapshot) Descriptor() ([]byte, []int) { return fileDescriptorRecord, []int{0} }
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func init() {
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proto1.RegisterType((*Snapshot)(nil), "containerd.snapshot.v1.Snapshot")
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proto1.RegisterEnum("containerd.snapshot.v1.Kind", Kind_name, Kind_value)
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}
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func (m *Snapshot) Marshal() (dAtA []byte, err error) {
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size := m.Size()
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dAtA = make([]byte, size)
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n, err := m.MarshalTo(dAtA)
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if err != nil {
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return nil, err
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}
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return dAtA[:n], nil
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}
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func (m *Snapshot) MarshalTo(dAtA []byte) (int, error) {
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var i int
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_ = i
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var l int
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_ = l
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if m.ID != 0 {
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dAtA[i] = 0x8
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i++
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i = encodeVarintRecord(dAtA, i, uint64(m.ID))
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}
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if len(m.Parent) > 0 {
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dAtA[i] = 0x12
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i++
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i = encodeVarintRecord(dAtA, i, uint64(len(m.Parent)))
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i += copy(dAtA[i:], m.Parent)
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}
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if m.Kind != 0 {
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dAtA[i] = 0x20
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i++
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i = encodeVarintRecord(dAtA, i, uint64(m.Kind))
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}
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if m.Inodes != 0 {
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dAtA[i] = 0x30
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i++
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i = encodeVarintRecord(dAtA, i, uint64(m.Inodes))
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}
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if m.Size_ != 0 {
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dAtA[i] = 0x38
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i++
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i = encodeVarintRecord(dAtA, i, uint64(m.Size_))
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}
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return i, nil
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}
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func encodeFixed64Record(dAtA []byte, offset int, v uint64) int {
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dAtA[offset] = uint8(v)
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dAtA[offset+1] = uint8(v >> 8)
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dAtA[offset+2] = uint8(v >> 16)
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dAtA[offset+3] = uint8(v >> 24)
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dAtA[offset+4] = uint8(v >> 32)
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dAtA[offset+5] = uint8(v >> 40)
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dAtA[offset+6] = uint8(v >> 48)
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dAtA[offset+7] = uint8(v >> 56)
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return offset + 8
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}
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func encodeFixed32Record(dAtA []byte, offset int, v uint32) int {
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dAtA[offset] = uint8(v)
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dAtA[offset+1] = uint8(v >> 8)
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dAtA[offset+2] = uint8(v >> 16)
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dAtA[offset+3] = uint8(v >> 24)
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return offset + 4
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}
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func encodeVarintRecord(dAtA []byte, offset int, v uint64) int {
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for v >= 1<<7 {
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dAtA[offset] = uint8(v&0x7f | 0x80)
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v >>= 7
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offset++
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}
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dAtA[offset] = uint8(v)
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return offset + 1
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}
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func (m *Snapshot) Size() (n int) {
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var l int
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_ = l
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if m.ID != 0 {
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n += 1 + sovRecord(uint64(m.ID))
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}
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l = len(m.Parent)
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if l > 0 {
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n += 1 + l + sovRecord(uint64(l))
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}
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if m.Kind != 0 {
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n += 1 + sovRecord(uint64(m.Kind))
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}
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if m.Inodes != 0 {
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n += 1 + sovRecord(uint64(m.Inodes))
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}
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if m.Size_ != 0 {
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n += 1 + sovRecord(uint64(m.Size_))
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}
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return n
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}
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func sovRecord(x uint64) (n int) {
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for {
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n++
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x >>= 7
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if x == 0 {
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break
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}
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}
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return n
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}
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func sozRecord(x uint64) (n int) {
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return sovRecord(uint64((x << 1) ^ uint64((int64(x) >> 63))))
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}
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func (this *Snapshot) String() string {
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if this == nil {
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return "nil"
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}
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s := strings.Join([]string{`&Snapshot{`,
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`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
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`Parent:` + fmt.Sprintf("%v", this.Parent) + `,`,
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`Kind:` + fmt.Sprintf("%v", this.Kind) + `,`,
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`Inodes:` + fmt.Sprintf("%v", this.Inodes) + `,`,
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`Size_:` + fmt.Sprintf("%v", this.Size_) + `,`,
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`}`,
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}, "")
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return s
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}
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func valueToStringRecord(v interface{}) string {
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rv := reflect.ValueOf(v)
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if rv.IsNil() {
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return "nil"
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}
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pv := reflect.Indirect(rv).Interface()
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return fmt.Sprintf("*%v", pv)
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}
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func (m *Snapshot) Unmarshal(dAtA []byte) error {
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l := len(dAtA)
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iNdEx := 0
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for iNdEx < l {
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preIndex := iNdEx
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var wire uint64
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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wire |= (uint64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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fieldNum := int32(wire >> 3)
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wireType := int(wire & 0x7)
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if wireType == 4 {
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return fmt.Errorf("proto: Snapshot: wiretype end group for non-group")
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}
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if fieldNum <= 0 {
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return fmt.Errorf("proto: Snapshot: illegal tag %d (wire type %d)", fieldNum, wire)
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}
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switch fieldNum {
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case 1:
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if wireType != 0 {
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return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
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}
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m.ID = 0
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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m.ID |= (uint64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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case 2:
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if wireType != 2 {
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return fmt.Errorf("proto: wrong wireType = %d for field Parent", wireType)
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}
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var stringLen uint64
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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stringLen |= (uint64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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intStringLen := int(stringLen)
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if intStringLen < 0 {
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return ErrInvalidLengthRecord
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}
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postIndex := iNdEx + intStringLen
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if postIndex > l {
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return io.ErrUnexpectedEOF
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}
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m.Parent = string(dAtA[iNdEx:postIndex])
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iNdEx = postIndex
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case 4:
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if wireType != 0 {
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return fmt.Errorf("proto: wrong wireType = %d for field Kind", wireType)
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}
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m.Kind = 0
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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m.Kind |= (Kind(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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case 6:
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if wireType != 0 {
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return fmt.Errorf("proto: wrong wireType = %d for field Inodes", wireType)
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}
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m.Inodes = 0
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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m.Inodes |= (int64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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case 7:
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if wireType != 0 {
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return fmt.Errorf("proto: wrong wireType = %d for field Size_", wireType)
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}
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m.Size_ = 0
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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m.Size_ |= (int64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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default:
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iNdEx = preIndex
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skippy, err := skipRecord(dAtA[iNdEx:])
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if err != nil {
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return err
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}
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if skippy < 0 {
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return ErrInvalidLengthRecord
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}
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if (iNdEx + skippy) > l {
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return io.ErrUnexpectedEOF
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}
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iNdEx += skippy
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}
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}
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if iNdEx > l {
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return io.ErrUnexpectedEOF
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}
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return nil
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}
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func skipRecord(dAtA []byte) (n int, err error) {
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l := len(dAtA)
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iNdEx := 0
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for iNdEx < l {
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var wire uint64
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return 0, ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return 0, io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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wire |= (uint64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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wireType := int(wire & 0x7)
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switch wireType {
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case 0:
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return 0, ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return 0, io.ErrUnexpectedEOF
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}
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iNdEx++
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if dAtA[iNdEx-1] < 0x80 {
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break
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}
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}
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return iNdEx, nil
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case 1:
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iNdEx += 8
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return iNdEx, nil
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case 2:
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var length int
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return 0, ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return 0, io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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length |= (int(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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iNdEx += length
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if length < 0 {
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return 0, ErrInvalidLengthRecord
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}
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return iNdEx, nil
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case 3:
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for {
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var innerWire uint64
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var start int = iNdEx
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for shift := uint(0); ; shift += 7 {
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if shift >= 64 {
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return 0, ErrIntOverflowRecord
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}
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if iNdEx >= l {
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return 0, io.ErrUnexpectedEOF
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}
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b := dAtA[iNdEx]
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iNdEx++
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innerWire |= (uint64(b) & 0x7F) << shift
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if b < 0x80 {
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break
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}
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}
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innerWireType := int(innerWire & 0x7)
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if innerWireType == 4 {
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break
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}
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next, err := skipRecord(dAtA[start:])
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if err != nil {
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return 0, err
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}
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iNdEx = start + next
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}
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return iNdEx, nil
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case 4:
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return iNdEx, nil
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case 5:
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iNdEx += 4
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return iNdEx, nil
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default:
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return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
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}
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}
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panic("unreachable")
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}
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var (
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ErrInvalidLengthRecord = fmt.Errorf("proto: negative length found during unmarshaling")
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ErrIntOverflowRecord = fmt.Errorf("proto: integer overflow")
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)
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func init() {
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proto1.RegisterFile("github.com/containerd/containerd/snapshot/storage/proto/record.proto", fileDescriptorRecord)
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}
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var fileDescriptorRecord = []byte{
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|
// 364 bytes of a gzipped FileDescriptorProto
|
|
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x90, 0xbb, 0xae, 0xd3, 0x30,
|
|
0x18, 0xc7, 0xe3, 0x9c, 0x28, 0xe7, 0xd4, 0x94, 0x12, 0x2c, 0x14, 0x45, 0x51, 0x65, 0x2c, 0xa6,
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0x88, 0x21, 0xe1, 0xf2, 0x04, 0xbd, 0x0d, 0x51, 0xd5, 0x56, 0x0a, 0xbd, 0xcc, 0x69, 0x6c, 0xa5,
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0x56, 0x55, 0xbb, 0x4a, 0x4c, 0x2b, 0x31, 0x31, 0x56, 0x79, 0x02, 0x96, 0x4c, 0xf0, 0x14, 0x3c,
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0x41, 0x47, 0x46, 0x26, 0x44, 0xf3, 0x24, 0x28, 0x69, 0x11, 0x0c, 0x67, 0xfb, 0x5f, 0x7e, 0xf6,
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0xf7, 0xe9, 0x83, 0xc3, 0x94, 0xab, 0xcd, 0xc7, 0xb5, 0x9f, 0xc8, 0x5d, 0x90, 0x48, 0xa1, 0x62,
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0x2e, 0x58, 0x46, 0xff, 0x97, 0xb9, 0x88, 0xf7, 0xf9, 0x46, 0xaa, 0x20, 0x57, 0x32, 0x8b, 0x53,
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0x16, 0xec, 0x33, 0xa9, 0x64, 0x90, 0xb1, 0x44, 0x66, 0xd4, 0x6f, 0x0c, 0xb2, 0xff, 0xf1, 0xfe,
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0x5f, 0xde, 0x3f, 0xbc, 0x75, 0x5f, 0xa4, 0x32, 0x95, 0x57, 0xbe, 0x56, 0x57, 0xfa, 0xd5, 0x17,
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0x00, 0x1f, 0x3e, 0xdc, 0x28, 0x64, 0x43, 0x9d, 0x53, 0x07, 0x10, 0xe0, 0x19, 0x7d, 0xb3, 0xfa,
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0xf5, 0x52, 0x0f, 0x87, 0x91, 0xce, 0x29, 0xb2, 0xa1, 0xb9, 0x8f, 0x33, 0x26, 0x94, 0xa3, 0x13,
|
|
0xe0, 0xb5, 0xa2, 0x9b, 0x43, 0x6f, 0xa0, 0xb1, 0xe5, 0x82, 0x3a, 0x06, 0x01, 0x5e, 0xe7, 0x5d,
|
|
0xd7, 0x7f, 0x7c, 0xb2, 0x3f, 0xe6, 0x82, 0x46, 0x0d, 0x59, 0xff, 0xc4, 0x85, 0xa4, 0x2c, 0x77,
|
|
0x4c, 0x02, 0xbc, 0xbb, 0xe8, 0xe6, 0x10, 0x82, 0x46, 0xce, 0x3f, 0x31, 0xe7, 0xbe, 0x49, 0x1b,
|
|
0xfd, 0xfa, 0x04, 0xa0, 0x51, 0x3f, 0x45, 0x5d, 0x78, 0xbf, 0x98, 0x8e, 0xa7, 0xb3, 0xd5, 0xd4,
|
|
0xd2, 0xdc, 0x67, 0x45, 0x49, 0x9e, 0xd4, 0xf1, 0x42, 0x6c, 0x85, 0x3c, 0x0a, 0x64, 0x43, 0x63,
|
|
0x19, 0x8e, 0x56, 0x16, 0x70, 0xdb, 0x45, 0x49, 0x1e, 0xea, 0x6a, 0xc9, 0xd9, 0x11, 0xb9, 0xd0,
|
|
0xec, 0x0d, 0xe6, 0xe1, 0x72, 0x64, 0xe9, 0x6e, 0xa7, 0x28, 0x09, 0xac, 0x9b, 0x5e, 0xa2, 0xf8,
|
|
0x81, 0x21, 0x02, 0x5b, 0x83, 0xd9, 0x64, 0x12, 0xce, 0xe7, 0xa3, 0xa1, 0x75, 0xe7, 0x3e, 0x2f,
|
|
0x4a, 0xf2, 0xb4, 0xae, 0x07, 0x72, 0xb7, 0xe3, 0x4a, 0x31, 0xea, 0xb6, 0x4f, 0x5f, 0xb1, 0xf6,
|
|
0xfd, 0x1b, 0x6e, 0x36, 0xe8, 0x3b, 0xe7, 0x0b, 0xd6, 0x7e, 0x5e, 0xb0, 0xf6, 0xb9, 0xc2, 0xe0,
|
|
0x5c, 0x61, 0xf0, 0xa3, 0xc2, 0xe0, 0x77, 0x85, 0xc1, 0xda, 0x6c, 0xce, 0xf8, 0xfe, 0x4f, 0x00,
|
|
0x00, 0x00, 0xff, 0xff, 0x61, 0xef, 0x92, 0x3d, 0xbc, 0x01, 0x00, 0x00,
|
|
}
|