Пример #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),
		}
	}
}
		containerHandle = fmt.Sprintf("h-%d", GinkgoParallelNode())
		iptablesChain = ""
		externalIP = nil
		containerIP = nil
	})

	JustBeforeEach(func() {
		spec = &kawasaki.PortForwarderSpec{
			IPTableChain: iptablesChain,
			ExternalIP:   externalIP,
			ContainerIP:  containerIP,
			FromPort:     externalPort,
			ToPort:       containerPort,
		}

		forwarder = iptables.NewPortForwarder(linux_command_runner.New())
	})

	Context("when NetworkConfig is valid", func() {
		BeforeEach(func() {
			externalIP = net.ParseIP("127.0.0.1")
			containerIP = net.ParseIP("127.0.0.2")
			iptablesChain = fmt.Sprintf("chain-%s", containerHandle)

			createChainCmd := exec.Command("iptables", "-w", "-t", "nat", "-N", iptablesChain)
			Expect(createChainCmd.Run()).To(Succeed())
		})

		AfterEach(func() {
			// clean up rules created by PortForwarder
			deleteRuleCmd := exec.Command(