/
del.go
54 lines (47 loc) · 1.12 KB
/
del.go
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package cni
import (
"encoding/json"
"net/url"
"github.com/containernetworking/cni/pkg/skel"
"github.com/containernetworking/plugins/pkg/ip"
"github.com/containernetworking/plugins/pkg/ns"
)
// Del free the IP address allocated for a container.
func Del(args *skel.CmdArgs) error {
conf := new(PluginConf)
err := json.Unmarshal(args.StdinData, conf)
if err != nil {
return err
}
coildURL, err := url.Parse(conf.CoildURL)
if err != nil {
return err
}
kv := parseArgs(args.Args)
podNS, podName, err := getPodInfo(kv)
if err != nil {
return err
}
err = returnIPToCoild(coildURL, podNS, podName, args.ContainerID)
if err != nil {
return err
}
if injectFailures {
panicForFirstRun("AfterReturingIP")
}
// Kubernetes sends multiple DEL for dead containers.
// See: https://github.com/kubernetes/kubernetes/issues/44100
if args.Netns == "" {
return nil
}
return ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
err := ip.DelLinkByName(args.IfName)
if err == nil || err == ip.ErrLinkNotFound {
if injectFailures {
panicForFirstRun("AfterDeletingVethPair")
}
return nil
}
return err
})
}