func (m *RemoteManager) GetNetworkConfig(ctx context.Context, network string) (*subnet.Config, error) {
url := m.mkurl(network, "config")
resp, err := m.httpVerb(ctx, "GET", url, "", nil)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, httpError(resp)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
config, err := subnet.ParseConfig(string(body))
if err != nil {
return nil, err
}
return config, nil
}
func NewSubnetManager() (subnet.Manager, error) {
cfg, err := restclient.InClusterConfig()
if err != nil {
return nil, fmt.Errorf("unable to initialize inclusterconfig: %v", err)
}
c, err := clientset.NewForConfig(cfg)
if err != nil {
return nil, fmt.Errorf("unable to initialize client: %v", err)
}
podName := os.Getenv("POD_NAME")
podNamespace := os.Getenv("POD_NAMESPACE")
if podName == "" || podNamespace == "" {
return nil, fmt.Errorf("env variables POD_NAME and POD_NAMESPACE must be set")
}
pod, err := c.Pods(podNamespace).Get(podName)
if err != nil {
return nil, fmt.Errorf("error retrieving pod spec for '%s/%s': %v", podNamespace, podName, err)
}
nodeName := pod.Spec.NodeName
if nodeName == "" {
return nil, fmt.Errorf("node name not present in pod spec '%s/%s'", podNamespace, podName)
}
netConf, err := ioutil.ReadFile(netConfPath)
if err != nil {
return nil, fmt.Errorf("failed to read net conf: %v", err)
}
sc, err := subnet.ParseConfig(string(netConf))
if err != nil {
return nil, fmt.Errorf("error parsing subnet config: %s", err)
}
sm, err := newKubeSubnetManager(c, sc, nodeName)
if err != nil {
return nil, fmt.Errorf("error creating network manager: %s", err)
}
go sm.Run(context.Background())
return sm, err
}