DockerCLI/vendor/github.com/moby/buildkit/client/llb/state.go

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package llb
import (
"context"
"fmt"
"net"
"github.com/containerd/containerd/platforms"
"github.com/moby/buildkit/identity"
"github.com/moby/buildkit/solver/pb"
"github.com/moby/buildkit/util/apicaps"
"github.com/moby/buildkit/util/system"
digest "github.com/opencontainers/go-digest"
specs "github.com/opencontainers/image-spec/specs-go/v1"
)
type StateOption func(State) State
type Output interface {
ToInput(*Constraints) (*pb.Input, error)
Vertex() Vertex
}
type Vertex interface {
Validate() error
Marshal(*Constraints) (digest.Digest, []byte, *pb.OpMetadata, error)
Output() Output
Inputs() []Output
}
func NewState(o Output) State {
s := State{
out: o,
ctx: context.Background(),
}
s = dir("/")(s)
s = addEnv("PATH", system.DefaultPathEnv)(s)
s = s.ensurePlatform()
return s
}
type State struct {
out Output
ctx context.Context
opts []ConstraintsOpt
}
func (s State) ensurePlatform() State {
if o, ok := s.out.(interface {
Platform() *specs.Platform
}); ok {
if p := o.Platform(); p != nil {
s = platform(*p)(s)
}
}
return s
}
func (s State) WithValue(k, v interface{}) State {
return State{
out: s.out,
ctx: context.WithValue(s.ctx, k, v),
}
}
func (s State) Value(k interface{}) interface{} {
return s.ctx.Value(k)
}
func (s State) SetMarhalDefaults(co ...ConstraintsOpt) State {
s.opts = co
return s
}
func (s State) Marshal(co ...ConstraintsOpt) (*Definition, error) {
def := &Definition{
Metadata: make(map[digest.Digest]pb.OpMetadata, 0),
}
if s.Output() == nil {
return def, nil
}
defaultPlatform := platforms.Normalize(platforms.DefaultSpec())
c := &Constraints{
Platform: &defaultPlatform,
LocalUniqueID: identity.NewID(),
}
for _, o := range append(s.opts, co...) {
o.SetConstraintsOption(c)
}
def, err := marshal(s.Output().Vertex(), def, map[digest.Digest]struct{}{}, map[Vertex]struct{}{}, c)
if err != nil {
return def, err
}
inp, err := s.Output().ToInput(c)
if err != nil {
return def, err
}
proto := &pb.Op{Inputs: []*pb.Input{inp}}
dt, err := proto.Marshal()
if err != nil {
return def, err
}
def.Def = append(def.Def, dt)
dgst := digest.FromBytes(dt)
md := def.Metadata[dgst]
md.Caps = map[apicaps.CapID]bool{
pb.CapConstraints: true,
pb.CapPlatform: true,
}
for _, m := range def.Metadata {
if m.IgnoreCache {
md.Caps[pb.CapMetaIgnoreCache] = true
}
if m.Description != nil {
md.Caps[pb.CapMetaDescription] = true
}
if m.ExportCache != nil {
md.Caps[pb.CapMetaExportCache] = true
}
}
def.Metadata[dgst] = md
return def, nil
}
func marshal(v Vertex, def *Definition, cache map[digest.Digest]struct{}, vertexCache map[Vertex]struct{}, c *Constraints) (*Definition, error) {
if _, ok := vertexCache[v]; ok {
return def, nil
}
for _, inp := range v.Inputs() {
var err error
def, err = marshal(inp.Vertex(), def, cache, vertexCache, c)
if err != nil {
return def, err
}
}
dgst, dt, opMeta, err := v.Marshal(c)
if err != nil {
return def, err
}
vertexCache[v] = struct{}{}
if opMeta != nil {
def.Metadata[dgst] = mergeMetadata(def.Metadata[dgst], *opMeta)
}
if _, ok := cache[dgst]; ok {
return def, nil
}
def.Def = append(def.Def, dt)
cache[dgst] = struct{}{}
return def, nil
}
func (s State) Validate() error {
return s.Output().Vertex().Validate()
}
func (s State) Output() Output {
return s.out
}
func (s State) WithOutput(o Output) State {
s = State{
out: o,
ctx: s.ctx,
}
s = s.ensurePlatform()
return s
}
func (s State) Run(ro ...RunOption) ExecState {
ei := &ExecInfo{State: s}
if p := s.GetPlatform(); p != nil {
ei.Constraints.Platform = p
}
for _, o := range ro {
o.SetRunOption(ei)
}
meta := Meta{
Args: getArgs(ei.State),
Cwd: getDir(ei.State),
Env: getEnv(ei.State),
User: getUser(ei.State),
ProxyEnv: ei.ProxyEnv,
ExtraHosts: getExtraHosts(ei.State),
Network: getNetwork(ei.State),
}
exec := NewExecOp(s.Output(), meta, ei.ReadonlyRootFS, ei.Constraints)
for _, m := range ei.Mounts {
exec.AddMount(m.Target, m.Source, m.Opts...)
}
exec.secrets = ei.Secrets
return ExecState{
State: s.WithOutput(exec.Output()),
exec: exec,
}
}
func (s State) AddEnv(key, value string) State {
return s.AddEnvf(key, value)
}
func (s State) AddEnvf(key, value string, v ...interface{}) State {
return addEnvf(key, value, v...)(s)
}
func (s State) Dir(str string) State {
return s.Dirf(str)
}
func (s State) Dirf(str string, v ...interface{}) State {
return dirf(str, v...)(s)
}
func (s State) GetEnv(key string) (string, bool) {
return getEnv(s).Get(key)
}
func (s State) Env() []string {
return getEnv(s).ToArray()
}
func (s State) GetDir() string {
return getDir(s)
}
func (s State) GetArgs() []string {
return getArgs(s)
}
func (s State) Reset(s2 State) State {
return reset(s2)(s)
}
func (s State) User(v string) State {
return user(v)(s)
}
func (s State) Platform(p specs.Platform) State {
return platform(p)(s)
}
func (s State) GetPlatform() *specs.Platform {
return getPlatform(s)
}
func (s State) Network(n pb.NetMode) State {
return network(n)(s)
}
func (s State) GetNetwork() pb.NetMode {
return getNetwork(s)
}
func (s State) With(so ...StateOption) State {
for _, o := range so {
s = o(s)
}
return s
}
func (s State) AddExtraHost(host string, ip net.IP) State {
return extraHost(host, ip)(s)
}
type output struct {
vertex Vertex
getIndex func() (pb.OutputIndex, error)
err error
platform *specs.Platform
}
func (o *output) ToInput(c *Constraints) (*pb.Input, error) {
if o.err != nil {
return nil, o.err
}
var index pb.OutputIndex
if o.getIndex != nil {
var err error
index, err = o.getIndex()
if err != nil {
return nil, err
}
}
dgst, _, _, err := o.vertex.Marshal(c)
if err != nil {
return nil, err
}
return &pb.Input{Digest: dgst, Index: index}, nil
}
func (o *output) Vertex() Vertex {
return o.vertex
}
func (o *output) Platform() *specs.Platform {
return o.platform
}
type ConstraintsOpt interface {
SetConstraintsOption(*Constraints)
RunOption
LocalOption
HTTPOption
ImageOption
GitOption
}
type constraintsOptFunc func(m *Constraints)
func (fn constraintsOptFunc) SetConstraintsOption(m *Constraints) {
fn(m)
}
func (fn constraintsOptFunc) SetRunOption(ei *ExecInfo) {
ei.applyConstraints(fn)
}
func (fn constraintsOptFunc) SetLocalOption(li *LocalInfo) {
li.applyConstraints(fn)
}
func (fn constraintsOptFunc) SetHTTPOption(hi *HTTPInfo) {
hi.applyConstraints(fn)
}
func (fn constraintsOptFunc) SetImageOption(ii *ImageInfo) {
ii.applyConstraints(fn)
}
func (fn constraintsOptFunc) SetGitOption(gi *GitInfo) {
gi.applyConstraints(fn)
}
func mergeMetadata(m1, m2 pb.OpMetadata) pb.OpMetadata {
if m2.IgnoreCache {
m1.IgnoreCache = true
}
if len(m2.Description) > 0 {
if m1.Description == nil {
m1.Description = make(map[string]string)
}
for k, v := range m2.Description {
m1.Description[k] = v
}
}
if m2.ExportCache != nil {
m1.ExportCache = m2.ExportCache
}
for k := range m2.Caps {
if m1.Caps == nil {
m1.Caps = make(map[apicaps.CapID]bool, len(m2.Caps))
}
m1.Caps[k] = true
}
return m1
}
var IgnoreCache = constraintsOptFunc(func(c *Constraints) {
c.Metadata.IgnoreCache = true
})
func WithDescription(m map[string]string) ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
if c.Metadata.Description == nil {
c.Metadata.Description = map[string]string{}
}
for k, v := range m {
c.Metadata.Description[k] = v
}
})
}
func WithCustomName(name string, a ...interface{}) ConstraintsOpt {
return WithDescription(map[string]string{
"llb.customname": fmt.Sprintf(name, a...),
})
}
// WithExportCache forces results for this vertex to be exported with the cache
func WithExportCache() ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
c.Metadata.ExportCache = &pb.ExportCache{Value: true}
})
}
// WithoutExportCache sets results for this vertex to be not exported with
// the cache
func WithoutExportCache() ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
// ExportCache with value false means to disable exporting
c.Metadata.ExportCache = &pb.ExportCache{Value: false}
})
}
// WithoutDefaultExportCache resets the cache export for the vertex to use
// the default defined by the build configuration.
func WithoutDefaultExportCache() ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
// nil means no vertex based config has been set
c.Metadata.ExportCache = nil
})
}
type constraintsWrapper struct {
Constraints
}
func (cw *constraintsWrapper) applyConstraints(f func(c *Constraints)) {
f(&cw.Constraints)
}
type Constraints struct {
Platform *specs.Platform
WorkerConstraints []string
Metadata pb.OpMetadata
LocalUniqueID string
}
func Platform(p specs.Platform) ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
c.Platform = &p
})
}
func LocalUniqueID(v string) ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
c.LocalUniqueID = v
})
}
var (
LinuxAmd64 = Platform(specs.Platform{OS: "linux", Architecture: "amd64"})
LinuxArmhf = Platform(specs.Platform{OS: "linux", Architecture: "arm", Variant: "v7"})
LinuxArm = LinuxArmhf
LinuxArmel = Platform(specs.Platform{OS: "linux", Architecture: "arm", Variant: "v6"})
LinuxArm64 = Platform(specs.Platform{OS: "linux", Architecture: "arm64"})
LinuxS390x = Platform(specs.Platform{OS: "linux", Architecture: "s390x"})
LinuxPpc64le = Platform(specs.Platform{OS: "linux", Architecture: "ppc64le"})
Darwin = Platform(specs.Platform{OS: "darwin", Architecture: "amd64"})
Windows = Platform(specs.Platform{OS: "windows", Architecture: "amd64"})
)
func Require(filters ...string) ConstraintsOpt {
return constraintsOptFunc(func(c *Constraints) {
for _, f := range filters {
c.WorkerConstraints = append(c.WorkerConstraints, f)
}
})
}