102 lines
1.8 KiB
Go
102 lines
1.8 KiB
Go
package llbbuild
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import (
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"github.com/moby/buildkit/client/llb"
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"github.com/moby/buildkit/solver/pb"
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digest "github.com/opencontainers/go-digest"
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)
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func Build(opt ...BuildOption) llb.StateOption {
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return func(s llb.State) llb.State {
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return s.WithOutput(NewBuildOp(s.Output(), opt...).Output())
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}
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}
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func NewBuildOp(source llb.Output, opt ...BuildOption) llb.Vertex {
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info := &BuildInfo{}
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for _, o := range opt {
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o(info)
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}
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return &build{source: source, info: info}
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}
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type build struct {
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source llb.Output
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info *BuildInfo
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cachedPB []byte
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}
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func (b *build) ToInput() (*pb.Input, error) {
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dt, err := b.Marshal()
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if err != nil {
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return nil, err
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}
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dgst := digest.FromBytes(dt)
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return &pb.Input{Digest: dgst, Index: pb.OutputIndex(0)}, nil
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}
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func (b *build) Vertex() llb.Vertex {
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return b
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}
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func (b *build) Validate() error {
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return nil
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}
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func (b *build) Marshal() ([]byte, error) {
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if b.cachedPB != nil {
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return b.cachedPB, nil
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}
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pbo := &pb.BuildOp{
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Builder: pb.LLBBuilder,
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Inputs: map[string]*pb.BuildInput{
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pb.LLBDefinitionInput: {pb.InputIndex(0)}},
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}
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pbo.Attrs = map[string]string{}
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if b.info.DefinitionFilename != "" {
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pbo.Attrs[pb.AttrLLBDefinitionFilename] = b.info.DefinitionFilename
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}
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pop := &pb.Op{
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Op: &pb.Op_Build{
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Build: pbo,
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},
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}
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inp, err := b.source.ToInput()
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if err != nil {
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return nil, err
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}
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pop.Inputs = append(pop.Inputs, inp)
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dt, err := pop.Marshal()
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if err != nil {
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return nil, err
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}
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b.cachedPB = dt
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return dt, nil
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}
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func (b *build) Output() llb.Output {
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return b
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}
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func (b *build) Inputs() []llb.Output {
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return []llb.Output{b.source}
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}
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type BuildInfo struct {
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DefinitionFilename string
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}
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type BuildOption func(*BuildInfo)
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func WithFilename(fn string) BuildOption {
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return func(b *BuildInfo) {
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b.DefinitionFilename = fn
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}
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}
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