/
rolebinding.go
111 lines (97 loc) · 4.29 KB
/
rolebinding.go
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/*
Copyright AppsCode Inc. and Contributors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1
import (
"context"
"github.com/pkg/errors"
rbac "k8s.io/api/rbac/v1"
kerr "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/strategicpatch"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/klog/v2"
kutil "kmodules.xyz/client-go"
)
func CreateOrPatchRoleBinding(ctx context.Context, c kubernetes.Interface, meta metav1.ObjectMeta, transform func(*rbac.RoleBinding) *rbac.RoleBinding, opts metav1.PatchOptions) (*rbac.RoleBinding, kutil.VerbType, error) {
cur, err := c.RbacV1().RoleBindings(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(err) {
klog.V(3).Infof("Creating RoleBinding %s/%s.", meta.Namespace, meta.Name)
out, err := c.RbacV1().RoleBindings(meta.Namespace).Create(ctx, transform(&rbac.RoleBinding{
TypeMeta: metav1.TypeMeta{
Kind: "RoleBinding",
APIVersion: rbac.SchemeGroupVersion.String(),
},
ObjectMeta: meta,
}), metav1.CreateOptions{
DryRun: opts.DryRun,
FieldManager: opts.FieldManager,
})
return out, kutil.VerbCreated, err
} else if err != nil {
return nil, kutil.VerbUnchanged, err
}
return PatchRoleBinding(ctx, c, cur, transform, opts)
}
func PatchRoleBinding(ctx context.Context, c kubernetes.Interface, cur *rbac.RoleBinding, transform func(*rbac.RoleBinding) *rbac.RoleBinding, opts metav1.PatchOptions) (*rbac.RoleBinding, kutil.VerbType, error) {
return PatchRoleBindingObject(ctx, c, cur, transform(cur.DeepCopy()), opts)
}
func PatchRoleBindingObject(ctx context.Context, c kubernetes.Interface, cur, mod *rbac.RoleBinding, opts metav1.PatchOptions) (*rbac.RoleBinding, kutil.VerbType, error) {
curJson, err := json.Marshal(cur)
if err != nil {
return nil, kutil.VerbUnchanged, err
}
modJson, err := json.Marshal(mod)
if err != nil {
return nil, kutil.VerbUnchanged, err
}
patch, err := strategicpatch.CreateTwoWayMergePatch(curJson, modJson, rbac.RoleBinding{})
if err != nil {
return nil, kutil.VerbUnchanged, err
}
if len(patch) == 0 || string(patch) == "{}" {
return cur, kutil.VerbUnchanged, nil
}
klog.V(3).Infof("Patching RoleBinding %s/%s with %s.", cur.Namespace, cur.Name, string(patch))
out, err := c.RbacV1().RoleBindings(cur.Namespace).Patch(ctx, cur.Name, types.StrategicMergePatchType, patch, opts)
return out, kutil.VerbPatched, err
}
func TryUpdateRoleBinding(ctx context.Context, c kubernetes.Interface, meta metav1.ObjectMeta, transform func(*rbac.RoleBinding) *rbac.RoleBinding, opts metav1.UpdateOptions) (result *rbac.RoleBinding, err error) {
attempt := 0
err = wait.PollUntilContextTimeout(ctx, kutil.RetryInterval, kutil.RetryTimeout, true, func(ctx context.Context) (bool, error) {
attempt++
cur, e2 := c.RbacV1().RoleBindings(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(e2) {
return false, e2
} else if e2 == nil {
result, e2 = c.RbacV1().RoleBindings(cur.Namespace).Update(ctx, transform(cur.DeepCopy()), opts)
return e2 == nil, nil
}
klog.Errorf("Attempt %d failed to update RoleBinding %s/%s due to %v.", attempt, cur.Namespace, cur.Name, e2)
return false, nil
})
if err != nil {
err = errors.Errorf("failed to update Role %s/%s after %d attempts due to %v", meta.Namespace, meta.Name, attempt, err)
}
return
}
func WaitUntillRoleBindingDeleted(ctx context.Context, c kubernetes.Interface, meta metav1.ObjectMeta) error {
return wait.PollUntilContextTimeout(ctx, kutil.RetryInterval, kutil.GCTimeout, true, func(ctx context.Context) (bool, error) {
_, err := c.RbacV1().RoleBindings(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if err != nil && kerr.IsNotFound(err) {
return true, nil
}
return false, nil
})
}