/
get.go
110 lines (99 loc) · 3.26 KB
/
get.go
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package cronjob
import (
"encoding/json"
"fmt"
"io/ioutil"
batchv1 "k8s.io/api/batch/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"
)
// Get gets cronjob from type string, []byte, *batchv1.CronJob,
// batchv1.CronJob, metav1.Object, 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 cronjob from file path.
func (h *Handler) Get(obj interface{}) (*batchv1.CronJob, error) {
switch val := obj.(type) {
case string:
return h.GetByName(val)
case []byte:
return h.GetFromBytes(val)
case *batchv1.CronJob:
return h.GetFromObject(val)
case batchv1.CronJob:
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 metav1.Object, runtime.Object:
return h.GetFromObject(val)
default:
return nil, ErrInvalidGetType
}
}
// GetByName gets cronjob by name.
func (h *Handler) GetByName(name string) (*batchv1.CronJob, error) {
return h.clientset.BatchV1().CronJobs(h.namespace).Get(h.ctx, name, h.Options.GetOptions)
}
// GetFromFile gets cronjob from yaml or json file.
func (h *Handler) GetFromFile(filename string) (*batchv1.CronJob, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return h.GetFromBytes(data)
}
// GetFromBytes gets cronjob from bytes data.
func (h *Handler) GetFromBytes(data []byte) (*batchv1.CronJob, error) {
cmJson, err := yaml.ToJSON(data)
if err != nil {
return nil, err
}
cj := &batchv1.CronJob{}
if err = json.Unmarshal(cmJson, cj); err != nil {
return nil, err
}
return h.getCronjob(cj)
}
// GetFromObject gets cronjob from metav1.Object or runtime.Object.
func (h *Handler) GetFromObject(obj interface{}) (*batchv1.CronJob, error) {
cj, ok := obj.(*batchv1.CronJob)
if !ok {
return nil, fmt.Errorf("object type is not *batchv1.CronJob")
}
return h.getCronjob(cj)
}
// GetFromUnstructured gets cronjob from *unstructured.Unstructured.
func (h *Handler) GetFromUnstructured(u *unstructured.Unstructured) (*batchv1.CronJob, error) {
cj := &batchv1.CronJob{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u.UnstructuredContent(), cj)
if err != nil {
return nil, err
}
return h.getCronjob(cj)
}
// GetFromMap gets cronjob from map[string]interface{}.
func (h *Handler) GetFromMap(u map[string]interface{}) (*batchv1.CronJob, error) {
cj := &batchv1.CronJob{}
err := runtime.DefaultUnstructuredConverter.FromUnstructured(u, cj)
if err != nil {
return nil, err
}
return h.getCronjob(cj)
}
// getCronjob
// It's necessary to get a new cronjob resource from a old cronjob resource,
// because old cronjob usually don't have cronjob.Status field.
func (h *Handler) getCronjob(cj *batchv1.CronJob) (*batchv1.CronJob, error) {
namespace := cj.GetNamespace()
if len(namespace) == 0 {
namespace = h.namespace
}
return h.clientset.BatchV1().CronJobs(namespace).Get(h.ctx, cj.Name, h.Options.GetOptions)
}