Esempio n. 1
0
//TODO: should it return something more than just an error?
func LinkContainers(action, parentIP, childIP string, ports []nat.Port, ignoreErrors bool) error {
	var nfAction iptables.Action

	switch action {
	case "-A":
		nfAction = iptables.Append
	case "-I":
		nfAction = iptables.Insert
	case "-D":
		nfAction = iptables.Delete
	default:
		return fmt.Errorf("Invalid action '%s' specified", action)
	}

	ip1 := net.ParseIP(parentIP)
	if ip1 == nil {
		return fmt.Errorf("Parent IP '%s' is invalid", parentIP)
	}
	ip2 := net.ParseIP(childIP)
	if ip2 == nil {
		return fmt.Errorf("Child IP '%s' is invalid", childIP)
	}

	chain := iptables.Chain{Name: "DOCKER", Bridge: bridgeIface}
	for _, port := range ports {
		if err := chain.Link(nfAction, ip1, ip2, port.Int(), port.Proto()); !ignoreErrors && err != nil {
			return err
		}
	}
	return nil
}
Esempio n. 2
0
func LinkContainers(job *engine.Job) error {
	var (
		action       = job.Args[0]
		nfAction     iptables.Action
		childIP      = job.Getenv("ChildIP")
		parentIP     = job.Getenv("ParentIP")
		ignoreErrors = job.GetenvBool("IgnoreErrors")
		ports        = job.GetenvList("Ports")
	)

	switch action {
	case "-A":
		nfAction = iptables.Append
	case "-I":
		nfAction = iptables.Insert
	case "-D":
		nfAction = iptables.Delete
	default:
		return fmt.Errorf("Invalid action '%s' specified", action)
	}

	ip1 := net.ParseIP(parentIP)
	if ip1 == nil {
		return fmt.Errorf("Parent IP '%s' is invalid", parentIP)
	}
	ip2 := net.ParseIP(childIP)
	if ip2 == nil {
		return fmt.Errorf("Child IP '%s' is invalid", childIP)
	}

	chain := iptables.Chain{Name: "DOCKER", Bridge: bridgeIface}
	for _, p := range ports {
		port := nat.Port(p)
		if err := chain.Link(nfAction, ip1, ip2, port.Int(), port.Proto()); !ignoreErrors && err != nil {
			return err
		}
	}
	return nil
}