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),
		}
	}
}
Пример #2
0
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("Port pool", func() {
	var initialState ports.State

	BeforeEach(func() {
		initialState = ports.State{Offset: 0}
	})

	Describe("initialization", func() {
		Context("when port range exeeding Linux limit given", func() {
			It("will return an error", func() {
				_, err := ports.NewPool(61001, 5000, initialState)
				Expect(err).To(MatchError(ContainSubstring("invalid port range")))
			})
		})
	})

	Describe("acquiring", func() {
		It("returns the next available port from the pool", func() {
			pool, err := ports.NewPool(10000, 5, initialState)
			Expect(err).ToNot(HaveOccurred())

			port1, err := pool.Acquire()
			Expect(err).ToNot(HaveOccurred())

			port2, err := pool.Acquire()
			Expect(err).ToNot(HaveOccurred())