107 lines
2.2 KiB
Go
107 lines
2.2 KiB
Go
package task
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"strings"
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"github.com/moby/buildkit/client/llb"
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"github.com/rs/zerolog/log"
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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("Source", func() Task { return &sourceTask{} })
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}
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type sourceTask struct {
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}
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func (c *sourceTask) PreRun(_ context.Context, pctx *plancontext.Context, v *compiler.Value) error {
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origPath, err := v.Lookup("path").String()
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if err != nil {
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return err
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}
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absPath, err := v.Lookup("path").AbsPath()
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if err != nil {
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return err
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}
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location, err := v.Lookup("path").Dirname()
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if err != nil {
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return err
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}
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if !strings.HasPrefix(absPath, location) {
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return fmt.Errorf("path %q is not relative", origPath)
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}
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if _, err := os.Stat(absPath); errors.Is(err, os.ErrNotExist) {
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return fmt.Errorf("path %q does not exist", origPath)
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}
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pctx.LocalDirs.Add(absPath)
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return nil
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}
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func (c *sourceTask) Run(ctx context.Context, pctx *plancontext.Context, s *solver.Solver, v *compiler.Value) (*compiler.Value, error) {
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lg := log.Ctx(ctx)
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path, err := v.Lookup("path").AbsPath()
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if err != nil {
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return nil, err
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}
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var source struct {
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Include []string
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Exclude []string
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}
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if err := v.Decode(&source); err != nil {
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return nil, err
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}
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lg.Debug().Str("path", path).Msg("loading local directory")
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opts := []llb.LocalOption{
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withCustomName(v, "Source %s", path),
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llb.IncludePatterns(source.Include),
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llb.ExcludePatterns(source.Exclude),
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// Without hint, multiple `llb.Local` operations on the
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// same path get a different digest.
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llb.SessionID(s.SessionID()),
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llb.SharedKeyHint(path),
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}
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// FIXME: Remove the `Copy` and use `Local` directly.
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//
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// Copy'ing is a costly operation which should be unnecessary.
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// However, using llb.Local directly breaks caching sometimes for unknown reasons.
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st := llb.Scratch().File(
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llb.Copy(
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llb.Local(
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path,
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opts...,
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),
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"/",
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"/",
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),
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withCustomName(v, "Embed %s [copy]", path),
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)
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result, err := s.Solve(ctx, st, 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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fs := pctx.FS.New(result)
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return compiler.NewValue().FillFields(map[string]interface{}{
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"output": fs.MarshalCUE(),
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})
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}
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