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() {