Function CloseBackend

commands/execenv/loading.go:115–131

CloseBackend is a wrapper for a RunE function that will close the Backend properly if it has been opened. This wrapper style is necessary because a Cobra PostE function does not run if RunE return an error.

(env *Env, runE func(cmd *cobra.Command, args []string) error)

// if it has been opened.
// This wrapper style is necessary because a Cobra PostE function does not run if RunE return an error.
func CloseBackend(env *Env, runE func(cmd *cobra.Command, args []string) error) func(*cobra.Command, []string) error {
	return func(cmd *cobra.Command, args []string) error {
		errRun := runE(cmd, args)

		if env.Backend == nil {
			return nil
		}
		err := env.Backend.Close()
		env.Backend = nil

		// prioritize the RunE error
		if errRun != nil {
			return errRun
		}
		return err
	}
}

func CacheBuildProgressBar(env *Env, events chan cache.BuildEvent) error {
	var progress *mpb.Progress