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apply.go
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apply.go
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package replicationcontroller
import (
"fmt"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
)
// Apply applies replicationcontroller from type string, []byte,
// *corev1.ReplicationController, corev1.ReplicationController, metav1.Object, runtime.Object,
// *unstructured.Unstructured, unstructured.Unstructured or map[string]interface{}.
func (h *Handler) Apply(obj interface{}) (*corev1.ReplicationController, error) {
switch val := obj.(type) {
case string:
return h.ApplyFromFile(val)
case []byte:
return h.ApplyFromBytes(val)
case *corev1.ReplicationController:
return h.ApplyFromObject(val)
case corev1.ReplicationController:
return h.ApplyFromObject(&val)
case *unstructured.Unstructured:
return h.ApplyFromUnstructured(val)
case unstructured.Unstructured:
return h.ApplyFromUnstructured(&val)
case map[string]interface{}:
return h.ApplyFromMap(val)
case metav1.Object, runtime.Object:
return h.ApplyFromObject(val)
default:
return nil, ErrInvalidApplyType
}
}
// ApplyFromFile applies replicationcontroller from yaml or json file.
func (h *Handler) ApplyFromFile(filename string) (rc *corev1.ReplicationController, err error) {
rc, err = h.CreateFromFile(filename)
if k8serrors.IsAlreadyExists(err) { // if replicationcontroller already exist, update it.
rc, err = h.UpdateFromFile(filename)
}
return
}
// ApplyFromBytes pply replicationcontroller from bytes data.
func (h *Handler) ApplyFromBytes(data []byte) (rc *corev1.ReplicationController, err error) {
rc, err = h.CreateFromBytes(data)
if k8serrors.IsAlreadyExists(err) {
rc, err = h.UpdateFromBytes(data)
}
return
}
// ApplyFromObject applies replicationcontroller from metav1.Object or runtime.Object.
func (h *Handler) ApplyFromObject(obj interface{}) (*corev1.ReplicationController, error) {
rc, ok := obj.(*corev1.ReplicationController)
if !ok {
return nil, fmt.Errorf("object type is not *corev1.ReplicationController")
}
return h.applyRS(rc)
}
// ApplyFromUnstructured applies replicationcontroller from *unstructured.Unstructured.
func (h *Handler) ApplyFromUnstructured(u *unstructured.Unstructured) (*corev1.ReplicationController, error) {
rc := &corev1.ReplicationController{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u.UnstructuredContent(), rc)
if err != nil {
return nil, err
}
return h.applyRS(rc)
}
// ApplyFromMap applies replicationcontroller from map[string]interface{}.
func (h *Handler) ApplyFromMap(u map[string]interface{}) (*corev1.ReplicationController, error) {
rc := &corev1.ReplicationController{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u, rc)
if err != nil {
return nil, err
}
return h.applyRS(rc)
}
// applyRS
func (h *Handler) applyRS(rc *corev1.ReplicationController) (*corev1.ReplicationController, error) {
_, err := h.createRS(rc)
if k8serrors.IsAlreadyExists(err) {
return h.updateRS(rc)
}
return rc, err
}