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package libpod
import (
"github.com/containernetworking/plugins/pkg/ns"
"github.com/cri-o/ocicni/pkg/ocicni"
"github.com/sirupsen/logrus"
)
// Get an OCICNI network config
func getPodNetwork(id, name, nsPath string, ports []ocicni.PortMappings) ocicni.PodNetwork {
return ocicni.PodNetwork{
Name: name,
Namespace: name, // TODO is there something else we should put here? We don't know about Kube namespaces
ID: id,
NetNS: nsPath,
PortMappings: ports,
}
}
// Create and configure a new network namespace
func (r *Runtime) createNetNS(id, name string, ports []ocicni.PortMapping) (n ns.NetNS, err error) {
ns, err := ns.NewNS()
if err != nil {
return nil, errors.Wrapf(err, "error creating network namespace %s", id)
}
defer func() {
if err != nil {
if err2 := ns.Close(); err2 != nil {
logrus.Errorf("Error closing partially created network namespace %s: %v", id, err2)
}
}
}()
podNetwork := getPodNetwork(id, name, ns.Path(), ports)
if err := r.netPlugin.SetUpPod(podNetwork); err != nil {
return nil, errors.Wrapf(err, "error configuring network namespace %s", id)
}
// TODO hostport mappings for forwarded ports
return ns, nil
}
// Join an existing network namespace
func joinNetNS(path string) (ns.NetNS, error) {
ns, err := ns.GetNS(path)
if err != nil {
return nil, errors.Wrapf(err, "error retrieving network namespace at %s", path)
}
return ns, nil
}
// Tear down a network namespace
func (r *Runtime) teardownNetNS(id, name string, ports []ocicni.PortMapping, ns ns.NetNS) error {
// TODO hostport mappings for forwarded ports should be undone
podNetwork := getPodNetwork(id, name, ns.Path(), ports)
if err := r.netPlugin.TearDownPod(podNetwork); err != nil {
return errors.Wrapf(err, "failed to remove network namespace %s", id)
}
return nil
}
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