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create.go
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create.go
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package service
import (
"encoding/json"
"fmt"
"io/ioutil"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/yaml"
)
// Create creates service from type string, []byte, *corev1.Service,
// corev1.Service, metav1.Object, runtime.Object, *unstructured.Unstructured,
// unstructured.Unstructured or map[string]interface{}.
func (h *Handler) Create(obj interface{}) (*corev1.Service, error) {
switch val := obj.(type) {
case string:
return h.CreateFromFile(val)
case []byte:
return h.CreateFromBytes(val)
case *corev1.Service:
return h.CreateFromObject(val)
case corev1.Service:
return h.CreateFromObject(&val)
case *unstructured.Unstructured:
return h.CreateFromUnstructured(val)
case unstructured.Unstructured:
return h.CreateFromUnstructured(&val)
case map[string]interface{}:
return h.CreateFromMap(val)
case metav1.Object, runtime.Object:
return h.CreateFromObject(val)
default:
return nil, ErrInvalidCreateType
}
}
// CreateFromFile creates service from yaml or json file.
func (h *Handler) CreateFromFile(filename string) (*corev1.Service, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return h.CreateFromBytes(data)
}
// CreateFromBytes creates service from bytes data.
func (h *Handler) CreateFromBytes(data []byte) (*corev1.Service, error) {
svcJson, err := yaml.ToJSON(data)
if err != nil {
return nil, err
}
svc := &corev1.Service{}
if err = json.Unmarshal(svcJson, svc); err != nil {
return nil, err
}
return h.createService(svc)
}
// CreateFromObject creates service from metav1.Object or runtime.Object.
func (h *Handler) CreateFromObject(obj interface{}) (*corev1.Service, error) {
svc, ok := obj.(*corev1.Service)
if !ok {
return nil, fmt.Errorf("object type is not *corev1.Service")
}
return h.createService(svc)
}
// CreateFromUnstructured creates service from *unstructured.Unstructured.
func (h *Handler) CreateFromUnstructured(u *unstructured.Unstructured) (*corev1.Service, error) {
svc := &corev1.Service{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u.UnstructuredContent(), svc)
if err != nil {
return nil, err
}
return h.createService(svc)
}
// CreateFromMap creates service from map[string]interface{}.
func (h *Handler) CreateFromMap(u map[string]interface{}) (*corev1.Service, error) {
svc := &corev1.Service{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u, svc)
if err != nil {
return nil, err
}
return h.createService(svc)
}
// createService
func (h *Handler) createService(svc *corev1.Service) (*corev1.Service, error) {
namespace := svc.GetNamespace()
if len(namespace) == 0 {
namespace = h.namespace
}
svc.ResourceVersion = ""
svc.UID = ""
return h.clientset.CoreV1().Services(namespace).Create(h.ctx, svc, h.Options.CreateOptions)
}