// Clean up all pod networking (clear OVS flows, release IPAM lease, remove host/container veth)
func (m *podManager) teardown(req *cniserver.PodRequest) error {
if err := ns.IsNSorErr(req.Netns); err != nil {
if _, ok := err.(ns.NSPathNotExistErr); ok {
glog.V(3).Infof("teardown called on already-destroyed pod %s/%s", req.PodNamespace, req.PodName)
return nil
}
}
hostVethName, contVethMac, podIP, err := getVethInfo(req.Netns, podInterfaceName)
if err != nil {
return err
}
// The script's teardown functionality doesn't need the VNID
out, err := exec.Command(sdnScript, tearDownCmd, hostVethName, contVethMac, podIP, "-1").CombinedOutput()
glog.V(5).Infof("TearDownPod network plugin output: %s, %v", string(out), err)
if isScriptError(err) {
return fmt.Errorf("error running network teardown script: %s", getScriptError(out))
} else if err != nil {
return err
}
if _, err := m.runIPAM(req.Netns, cniserver.CNI_DEL, req.ContainerId); err != nil {
return err
}
if err := m.hostportHandler.SyncHostports(TUN, m.getRunningPods()); err != nil {
return err
}
return nil
}
createdNetNS, err := ns.NewNS()
Expect(err).NotTo(HaveOccurred())
err = createdNetNS.Close()
Expect(err).NotTo(HaveOccurred())
err = createdNetNS.Close()
Expect(err).To(HaveOccurred())
})
})
})
Describe("IsNSorErr", func() {
It("should detect a namespace", func() {
createdNetNS, err := ns.NewNS()
err = ns.IsNSorErr(createdNetNS.Path())
Expect(err).NotTo(HaveOccurred())
})
It("should refuse other paths", func() {
tempFile, err := ioutil.TempFile("", "nstest")
Expect(err).NotTo(HaveOccurred())
defer tempFile.Close()
nspath := tempFile.Name()
defer os.Remove(nspath)
err = ns.IsNSorErr(nspath)
Expect(err).To(HaveOccurred())
Expect(err).To(BeAssignableToTypeOf(ns.NSPathNotNSErr{}))
Expect(err).NotTo(BeAssignableToTypeOf(ns.NSPathNotExistErr{}))