90 lines
1.7 KiB
Go
90 lines
1.7 KiB
Go
package task
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import (
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"context"
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"fmt"
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"io/fs"
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"cuelang.org/go/cue"
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"github.com/moby/buildkit/client/llb"
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"go.dagger.io/dagger/compiler"
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"go.dagger.io/dagger/plancontext"
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"go.dagger.io/dagger/solver"
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)
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func init() {
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Register("WriteFile", func() Task { return &writeFileTask{} })
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}
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type writeFileTask struct {
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}
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func (t *writeFileTask) Run(ctx context.Context, pctx *plancontext.Context, s solver.Solver, v *compiler.Value) (*compiler.Value, error) {
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var contents []byte
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var err error
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path, err := v.Lookup("path").String()
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if err != nil {
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return nil, err
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}
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switch kind := v.Lookup("contents").Kind(); kind {
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// TODO: support bytes?
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// case cue.BytesKind:
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// contents, err = v.Lookup("contents").Bytes()
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case cue.StringKind:
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var str string
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str, err = v.Lookup("contents").String()
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if err == nil {
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contents = []byte(str)
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}
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case cue.BottomKind:
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err = fmt.Errorf("%s: WriteFile contents is not set", path)
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default:
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err = fmt.Errorf("%s: unhandled data type in WriteFile: %s", path, kind)
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}
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if err != nil {
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return nil, err
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}
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permissions, err := v.Lookup("permissions").Int64()
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if err != nil {
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return nil, err
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}
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input, err := pctx.FS.FromValue(v.Lookup("input"))
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if err != nil {
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return nil, err
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}
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inputState, err := input.State()
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if err != nil {
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return nil, err
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}
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outputState := inputState.File(
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llb.Mkfile(path, fs.FileMode(permissions), contents),
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withCustomName(v, "WriteFile %s", path),
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)
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result, err := s.Solve(ctx, outputState, pctx.Platform.Get())
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if err != nil {
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return nil, err
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}
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outputFS := pctx.FS.New(result)
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output := compiler.NewValue()
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if err := output.FillPath(cue.ParsePath("output"), outputFS.MarshalCUE()); err != nil {
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return nil, err
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}
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return output, nil
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}
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