Function Validate

engine/resources.go:328–353

Validate validates a resource by checking multiple aspects. This is the main entry point for running all the validation steps on a resource.

(res Res)

// Validate validates a resource by checking multiple aspects. This is the main
// entry point for running all the validation steps on a resource.
func Validate(res Res) error {
	if res.Kind() == "" { // shouldn't happen IIRC
		return fmt.Errorf("the Res has an empty Kind")
	}
	if res.Name() == "" {
		return fmt.Errorf("the Res has an empty Name")
	}

	if err := res.MetaParams().Validate(); err != nil {
		return errwrap.Wrapf(err, "the Res has an invalid meta param")
	}

	// TODO: pull dollar prefix from a constant
	// This catches typos where the user meant to use ${var} interpolation.
	if !res.MetaParams().Dollar && strings.HasPrefix(res.Name(), "$") {
		return fmt.Errorf("the Res name starts with a $")
	}

	// Don't need to validate normally if hidden.
	// XXX: Check if it's also Exported too? len(res.MetaParams.Export) > 0
	if res.MetaParams().Hidden {
		return nil
	}

	return res.Validate()
}

// InterruptableRes is an interface that adds interrupt functionality to
// resources. If the resource implements this interface, the engine will call