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base.go
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base.go
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package updater
import (
"context"
"github.com/illuminatingKong/kongming-kit/kubego/getter"
"github.com/illuminatingKong/kongming-kit/kubego/patcher"
"github.com/illuminatingKong/kongming-kit/kubego/util"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
"sigs.k8s.io/controller-runtime/pkg/client"
"time"
)
func patchObject(obj client.Object, patchBytes []byte, cl client.Client) error {
return cl.Patch(context.TODO(), obj, client.RawPatch(types.StrategicMergePatchType, patchBytes))
}
func updateObject(obj client.Object, cl client.Client) error {
// always add the last-applied-configuration annotation
err := util.CreateApplyAnnotation(obj)
if err != nil {
return err
}
return cl.Update(context.TODO(), obj)
}
func deleteObject(obj client.Object, cl client.Client, opts ...client.DeleteOption) error {
return cl.Delete(context.TODO(), obj, opts...)
}
func deleteObjects(obj client.Object, cl client.Client, opts ...client.DeleteAllOfOption) error {
return cl.DeleteAllOf(context.TODO(), obj, opts...)
}
func deleteObjectWithDefaultOptions(obj client.Object, cl client.Client) error {
deletePolicy := metav1.DeletePropagationForeground
return deleteObject(obj, cl, &client.DeleteOptions{PropagationPolicy: &deletePolicy})
}
func deleteObjectsWithDefaultOptions(ns string, selector labels.Selector, obj client.Object, cl client.Client) error {
deletePolicy := metav1.DeletePropagationForeground
delOpt := &client.DeleteAllOfOptions{
DeleteOptions: client.DeleteOptions{PropagationPolicy: &deletePolicy},
ListOptions: client.ListOptions{LabelSelector: selector, Namespace: ns},
}
return deleteObjects(obj, cl, delOpt)
}
func createObject(obj client.Object, cl client.Client) error {
// always add the last-applied-configuration annotation
err := util.CreateApplyAnnotation(obj)
if err != nil {
return err
}
return cl.Create(context.TODO(), obj)
}
func createObjectNeverAnnotation(obj client.Object, cl client.Client) error {
return cl.Create(context.TODO(), obj)
}
func updateOrCreateObject(obj client.Object, cl client.Client) error {
err := updateObject(obj, cl)
if err != nil {
if apierrors.IsNotFound(err) {
return createObject(obj, cl)
}
return err
}
return nil
}
func createOrPatchObject(modified client.Object, cl client.Client) error {
c := modified.DeepCopyObject().(client.Object)
found, err := getter.GetResourceInCache(modified.GetNamespace(), modified.GetName(), c, cl)
if err != nil {
return err
} else if !found {
return createObject(modified, cl)
}
// fill gvk in case it is missing.
// for objects retrieved from APIServer, gvk is not set, so we need to set it
// for objects in cache, gvk is set, nothing will be changed here
gvk := modified.GetObjectKind().GroupVersionKind()
current, err := util.SetGroupVersionKind(c, &gvk)
if err != nil {
return err
}
patchBytes, patchType, err := patcher.GeneratePatchBytes(current, modified, cl)
if err != nil {
return err
}
if len(patchBytes) == 0 || patchType == "" || string(patchBytes) == "{}" {
return nil
}
return patchObjectWithType(current.(client.Object), patchBytes, patchType, cl)
}
func createOrPatchObjectNeverAnnotation(modified client.Object, cl client.Client) error {
c := modified.DeepCopyObject().(client.Object)
found, err := getter.GetResourceInCache(modified.GetNamespace(), modified.GetName(), c, cl)
if err != nil {
return err
} else if !found {
return createObjectNeverAnnotation(modified, cl)
}
gvk := modified.GetObjectKind().GroupVersionKind()
current, err := util.SetGroupVersionKind(c, &gvk)
if err != nil {
return err
}
patchBytes, patchType, err := patcher.GeneratePatchBytes(current, modified, cl)
if err != nil {
return err
}
if len(patchBytes) == 0 || patchType == "" || string(patchBytes) == "{}" {
return nil
}
return patchObjectWithType(current.(client.Object), patchBytes, patchType, cl)
}
func patchObjectWithType(obj client.Object, patchBytes []byte, patchType types.PatchType, cl client.Client) error {
return cl.Patch(context.TODO(), obj, client.RawPatch(patchType, patchBytes))
}
// TODO: LOU(LOU is from zhangmen): improve it
// deleteObjectAndWait delete the object and wait till it is gone.
func deleteObjectAndWait(obj client.Object, cl client.Client) error {
err := deleteObjectWithDefaultOptions(obj, cl)
if err != nil && !apierrors.IsNotFound(err) {
return err
}
return wait.PollImmediate(time.Second, 60*time.Second, func() (done bool, err error) {
found, err := getter.GetResourceInCache(obj.GetNamespace(), obj.GetName(), obj, cl)
if err != nil {
return false, err
}
return !found, nil
})
}
// TODO: LOU(LOU is form zhangmen): improve it
// deleteObjectsAndWait deletes the objects and wait till all of them are gone.
func deleteObjectsAndWait(ns string, selector labels.Selector, obj client.Object, gvk schema.GroupVersionKind, cl client.Client) error {
err := deleteObjectsWithDefaultOptions(ns, selector, obj, cl)
if err != nil && !apierrors.IsNotFound(err) {
return err
}
return wait.PollImmediate(time.Second, 60*time.Second, func() (done bool, err error) {
us, err := getter.ListUnstructuredResourceInCache(ns, selector, nil, gvk, cl)
if err != nil {
return false, err
}
return len(us) == 0, nil
})
}