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),
}
}
}
. "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())