func validateForWaitForInstancesSignal()

in step_wait_for_instances_signal.go [430:455]

• 25 lines of code
• 14 McCabe index (conditional complexity)

func validateForWaitForInstancesSignal(w *[]*InstanceSignal, s *Step) DError {
	// Instance checking.
	for _, i := range *w {
		if _, err := s.w.instances.regUse(i.Name, s); err != nil {
			return err
		}
		if i.interval == 0*time.Second {
			return Errf("%q: cannot wait for instance signal, no interval given", i.Name)
		}
		if i.Stopped && len(i.Status) > 0 {
			return Errf("%q: Stopped and Status cannot be set simultaneously", i.Name)
		}
		if i.SerialOutput == nil && i.GuestAttribute == nil && i.Stopped == false && len(i.Status) < 1 {
			return Errf("%q: cannot wait for instance signal, nothing to wait for", i.Name)
		}
		if i.SerialOutput != nil {
			if i.SerialOutput.Port == 0 {
				return Errf("%q: cannot wait for instance signal via SerialOutput, no Port given", i.Name)
			}
			if i.SerialOutput.SuccessMatch == "" && len(i.SerialOutput.FailureMatch) == 0 {
				return Errf("%q: cannot wait for instance signal via SerialOutput, no SuccessMatch or FailureMatch given", i.Name)
			}
		}
	}
	return nil
}