Exemple #1
0
func wireNetworker(
	log lager.Logger,
	tag string,
	networkPoolCIDR *net.IPNet,
	externalIP net.IP,
	iptablesMgr kawasaki.IPTablesConfigurer,
	interfacePrefix string,
	chainPrefix string,
	propManager *properties.Manager,
	networkModulePath string) gardener.Networker {
	runner := &logging.Runner{CommandRunner: linux_command_runner.New(), Logger: log.Session("network-runner")}

	hostConfigurer := &configure.Host{
		Veth:   &devices.VethCreator{},
		Link:   &devices.Link{Name: "guardian"},
		Bridge: &devices.Bridge{},
		Logger: log.Session("network-host-configurer"),
	}

	containerCfgApplier := &configure.Container{
		Logger: log.Session("network-container-configurer"),
		Link:   &devices.Link{Name: "guardian"},
	}

	idGenerator := kawasaki.NewSequentialIDGenerator(time.Now().UnixNano())
	portPool, err := ports.NewPool(uint32(*portPoolStart), uint32(*portPoolSize), ports.State{})
	if err != nil {
		log.Fatal("invalid pool range", err)
	}

	switch networkModulePath {
	case "":
		return kawasaki.New(
			kawasaki.NewManager(runner, "/var/run/netns"),
			kawasaki.SpecParserFunc(kawasaki.ParseSpec),
			subnets.NewPool(networkPoolCIDR),
			kawasaki.NewConfigCreator(idGenerator, interfacePrefix, chainPrefix, externalIP),
			kawasaki.NewConfigurer(
				hostConfigurer,
				containerCfgApplier,
				iptablesMgr,
				&netns.Execer{},
			),
			propManager,
			iptables.NewPortForwarder(runner),
			portPool,
		)
	default:
		if _, err := os.Stat(networkModulePath); err != nil {
			log.Fatal("failed-to-stat-network-module", err)
			return nil
		}
		return gardener.ForeignNetworkAdaptor{
			ForeignNetworker: genclient.New(networkModulePath),
		}
	}
}
		externalIP  net.IP
		logger      lager.Logger
		idGenerator *fakes.FakeIDGenerator
	)

	BeforeEach(func() {
		var err error
		ip, subnet, err = net.ParseCIDR("192.168.12.20/24")
		Expect(err).NotTo(HaveOccurred())

		externalIP = net.ParseIP("220.10.120.5")

		logger = lagertest.NewTestLogger("test")
		idGenerator = &fakes.FakeIDGenerator{}

		creator = kawasaki.NewConfigCreator(idGenerator, "w1", "0123456789abcdef", externalIP)
	})

	It("panics if the interface prefix is longer than 2 characters", func() {
		Expect(func() {
			kawasaki.NewConfigCreator(idGenerator, "too-long", "wc", externalIP)
		}).To(Panic())
	})

	It("panics if the chain prefix is longer than 16 characters", func() {
		Expect(func() {
			kawasaki.NewConfigCreator(idGenerator, "w1", "0123456789abcdefg", externalIP)
		}).To(Panic())
	})

	It("assigns the bridge name based on the subnet", func() {