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get.go
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get.go
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package ingress
import (
"encoding/json"
"fmt"
"io/ioutil"
networkingv1 "k8s.io/api/networking/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/yaml"
)
// Get gets ingress from type string, []byte, *networkingv1.Ingress,
// networkingv1.Ingress, runtime.Object, *unstructured.Unstructured,
// unstructured.Unstructured or map[string]interface{}.
//
// If passed parameter type is string, it will simply call GetByName instead of GetFromFile.
// You should always explicitly call GetFromFile to get a ingress from file path.
func (h *Handler) Get(obj interface{}) (*networkingv1.Ingress, error) {
switch val := obj.(type) {
case string:
return h.GetByName(val)
case []byte:
return h.GetFromBytes(val)
case *networkingv1.Ingress:
return h.GetFromObject(val)
case networkingv1.Ingress:
return h.GetFromObject(&val)
case *unstructured.Unstructured:
return h.GetFromUnstructured(val)
case unstructured.Unstructured:
return h.GetFromUnstructured(&val)
case map[string]interface{}:
return h.GetFromMap(val)
case runtime.Object:
return h.GetFromObject(val)
default:
return nil, ErrInvalidGetType
}
}
// GetByName gets ingress by name.
func (h *Handler) GetByName(name string) (*networkingv1.Ingress, error) {
return h.clientset.NetworkingV1().Ingresses(h.namespace).Get(h.ctx, name, h.Options.GetOptions)
}
// GetFromFile gets ingress from yaml file.
func (h *Handler) GetFromFile(filename string) (*networkingv1.Ingress, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return h.GetFromBytes(data)
}
// GetFromBytes gets ingress from bytes.
func (h *Handler) GetFromBytes(data []byte) (*networkingv1.Ingress, error) {
ingJson, err := yaml.ToJSON(data)
if err != nil {
return nil, err
}
ing := &networkingv1.Ingress{}
if err = json.Unmarshal(ingJson, ing); err != nil {
return nil, err
}
return h.getIngress(ing)
}
// GetFromObject gets ingress from runtime.Object.
func (h *Handler) GetFromObject(obj runtime.Object) (*networkingv1.Ingress, error) {
ing, ok := obj.(*networkingv1.Ingress)
if !ok {
return nil, fmt.Errorf("object type is not *networkingv1.Ingress")
}
return h.getIngress(ing)
}
// GetFromUnstructured gets ingress from *unstructured.Unstructured.
func (h *Handler) GetFromUnstructured(u *unstructured.Unstructured) (*networkingv1.Ingress, error) {
ing := &networkingv1.Ingress{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u.UnstructuredContent(), ing)
if err != nil {
return nil, err
}
return h.getIngress(ing)
}
// GetFromMap gets ingress from map[string]interface{}.
func (h *Handler) GetFromMap(u map[string]interface{}) (*networkingv1.Ingress, error) {
ing := &networkingv1.Ingress{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u, ing)
if err != nil {
return nil, err
}
return h.getIngress(ing)
}
// getIngress
// It's necessary to get a new ingress resource from a old ingress resource,
// because old ingress usually don't have ingress.Status field.
func (h *Handler) getIngress(ing *networkingv1.Ingress) (*networkingv1.Ingress, error) {
var namespace string
if len(ing.Namespace) != 0 {
namespace = ing.Namespace
} else {
namespace = h.namespace
}
return h.clientset.NetworkingV1().Ingresses(namespace).Get(h.ctx, ing.Name, h.Options.GetOptions)
}