stdlib: lock when vendoring to avoid race conditions
Signed-off-by: Sam Alba <samalba@users.noreply.github.com>
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@ -8,6 +8,8 @@ import (
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"os"
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"os"
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"path"
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"path"
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"path/filepath"
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"path/filepath"
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"github.com/gofrs/flock"
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)
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)
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var (
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var (
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@ -17,9 +19,17 @@ var (
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PackageName = "alpha.dagger.io"
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PackageName = "alpha.dagger.io"
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Path = path.Join("cue.mod", "pkg", PackageName)
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Path = path.Join("cue.mod", "pkg", PackageName)
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lockFilePath = path.Join("cue.mod", "dagger.lock")
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)
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)
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func Vendor(ctx context.Context, mod string) error {
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func Vendor(ctx context.Context, mod string) error {
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fileLock := flock.New(path.Join(mod, lockFilePath))
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if err := fileLock.Lock(); err != nil {
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return err
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}
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defer fileLock.Unlock()
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// Remove any existing copy of the universe
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// Remove any existing copy of the universe
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if err := os.RemoveAll(path.Join(mod, Path)); err != nil {
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if err := os.RemoveAll(path.Join(mod, Path)); err != nil {
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return err
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return err
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