func NewDefaultConfigurer(ipt *iptables.IPTablesController) kawasaki.Configurer {
resolvConfigurer := &kawasaki.ResolvConfigurer{
HostsFileCompiler: &dns.HostsFileCompiler{},
ResolvFileCompiler: &dns.ResolvFileCompiler{},
FileWriter: &dns.RootfsWriter{},
IDMapReader: &kawasaki.RootIdMapReader{},
}
hostConfigurer := &configure.Host{
Veth: &devices.VethCreator{},
Link: &devices.Link{},
Bridge: &devices.Bridge{},
FileOpener: netns.Opener(os.Open),
}
containerConfigurer := &configure.Container{
FileOpener: netns.Opener(os.Open),
}
return kawasaki.NewConfigurer(
resolvConfigurer,
hostConfigurer,
containerConfigurer,
iptables.NewInstanceChainCreator(ipt),
)
}
netNsPath := fmt.Sprintf("/run/netns/%s", netNsName)
netNsFd, err = os.Open(netNsPath)
Expect(err).NotTo(HaveOccurred())
sess, err = gexec.Start(exec.Command("ip", "link", "add", linkName, "type", "dummy"), GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
Eventually(sess).Should(gexec.Exit(0))
sess, err = gexec.Start(exec.Command("ip", "link", "set", linkName, "netns", netNsName), GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
Eventually(sess).Should(gexec.Exit(0))
configurer = &configure.Container{
FileOpener: netns.Opener(func(path string) (*os.File, error) {
return netNsFd, nil
}),
}
logger = lagertest.NewTestLogger("container")
containerIP, subnet, err := net.ParseCIDR("192.0.2.20/24")
Expect(err).NotTo(HaveOccurred())
networkConfig = kawasaki.NetworkConfig{
ContainerIntf: linkName,
ContainerIP: containerIP,
BridgeIP: net.ParseIP("192.0.2.1"),
Subnet: subnet,
Mtu: 1600,
}
})
BeforeEach(func() {
vethCreator = &fakedevices.FaveVethCreator{}
linkConfigurer = &fakedevices.FakeLink{AddIPReturns: make(map[string]error)}
bridger = &fakedevices.FakeBridge{}
logger = lagertest.NewTestLogger("test")
config = kawasaki.NetworkConfig{}
})
JustBeforeEach(func() {
configurer = &configure.Host{
Veth: vethCreator,
Link: linkConfigurer,
Bridge: bridger,
FileOpener: netns.Opener(nsOpener),
}
})
Describe("Apply", func() {
var (
netnsFD *os.File
existingBridge *net.Interface
)
BeforeEach(func() {
var err error
netnsFD, err = ioutil.TempFile("", "")
Expect(err).NotTo(HaveOccurred())