/
kubernetes.go
63 lines (52 loc) · 1.3 KB
/
kubernetes.go
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// Package kubernetes contains Kubernetes helper functions (https://kubernetes.io/)
package kubernetes
import (
"context"
"text/template"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd/api"
)
func FuncMap() template.FuncMap {
return template.FuncMap{
"KubernetesContexts": Contexts,
"KubernetesOpen": Open,
"KubernetesNamespaces": Namespaces,
}
}
type Context struct {
name string
context *api.Context
}
func (c Context) String() string {
return c.name
}
type Namespace struct {
namespace *v1.Namespace
}
func (n Namespace) String() string {
return n.namespace.Name
}
type Client struct {
client *kubernetes.Clientset
config *api.Config
}
func (k Client) Contexts() ([]*Context, error) {
out := make([]*Context, 0, len(k.config.Contexts))
for name, c := range k.config.Contexts {
out = append(out, &Context{name: name, context: c})
}
return out, nil
}
func (k Client) Namespaces() ([]*Namespace, error) {
namespaces, err := k.client.CoreV1().Namespaces().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
out := make([]*Namespace, 0, len(namespaces.Items))
for _, ns := range namespaces.Items {
out = append(out, &Namespace{namespace: &ns})
}
return out, nil
}