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package server
import (
"fmt"
"net"
"github.com/kubernetes-incubator/cri-o/libkpod/sandbox"
"github.com/sirupsen/logrus"
"k8s.io/kubernetes/pkg/kubelet/network/hostport"
)
// networkStart sets up the sandbox's network and returns the pod IP on success
// or an error
func (s *Server) networkStart(hostNetwork bool, sb *sandbox.Sandbox) (string, error) {
if hostNetwork {
return s.BindAddress(), nil
}
podNetwork := newPodNetwork(sb)
err := s.netPlugin.SetUpPod(podNetwork)
if err != nil {
return "", fmt.Errorf("failed to create pod network sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
}
var ip string
if ip, err = s.netPlugin.GetPodNetworkStatus(podNetwork); err != nil {
return "", fmt.Errorf("failed to get network status for pod sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
}
if len(sb.PortMappings()) > 0 {
ip4 := net.ParseIP(ip).To4()
if ip4 == nil {
return "", fmt.Errorf("failed to get valid ipv4 address for sandbox %s(%s)", sb.Name(), sb.ID())
}
if err = s.hostportManager.Add(sb.ID(), &hostport.PodPortMapping{
Name: sb.Name(),
PortMappings: sb.PortMappings(),
IP: ip4,
HostNetwork: false,
}, "lo"); err != nil {
return "", fmt.Errorf("failed to add hostport mapping for sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
}
}
return ip, nil
}
// networkStop cleans up and removes a pod's network. It is best-effort and
// must call the network plugin even if the network namespace is already gone
func (s *Server) networkStop(hostNetwork bool, sb *sandbox.Sandbox) error {
if !hostNetwork {
if err := s.hostportManager.Remove(sb.ID(), &hostport.PodPortMapping{
Name: sb.Name(),
PortMappings: sb.PortMappings(),
HostNetwork: false,
}); err != nil {
logrus.Warnf("failed to remove hostport for pod sandbox %s(%s): %v",
sb.Name(), sb.ID(), err)
}
podNetwork := newPodNetwork(sb)
if err := s.netPlugin.TearDownPod(podNetwork); err != nil {
logrus.Warnf("failed to destroy network for pod sandbox %s(%s): %v",
sb.Name(), sb.ID(), err)
}
}
return nil
}
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