66 lines
2.2 KiB
Go
66 lines
2.2 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package framework
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import (
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"time"
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apierrors "k8s.io/kubernetes/pkg/api/errors"
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authorizationv1beta1 "k8s.io/kubernetes/pkg/apis/authorization/v1beta1"
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v1beta1authorization "k8s.io/kubernetes/pkg/client/clientset_generated/clientset/typed/authorization/v1beta1"
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"k8s.io/kubernetes/pkg/runtime/schema"
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"k8s.io/kubernetes/pkg/util/wait"
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)
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const (
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policyCachePollInterval = 100 * time.Millisecond
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policyCachePollTimeout = 5 * time.Second
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)
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// WaitForAuthorizationUpdate checks if the given user can perform the named verb and action.
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// If policyCachePollTimeout is reached without the expected condition matching, an error is returned
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func WaitForAuthorizationUpdate(c v1beta1authorization.SubjectAccessReviewsGetter, user, namespace, verb string, resource schema.GroupResource, allowed bool) error {
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review := &authorizationv1beta1.SubjectAccessReview{
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Spec: authorizationv1beta1.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationv1beta1.ResourceAttributes{
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Group: resource.Group,
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Verb: verb,
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Resource: resource.Resource,
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Namespace: namespace,
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},
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User: user,
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},
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}
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err := wait.Poll(policyCachePollInterval, policyCachePollTimeout, func() (bool, error) {
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response, err := c.SubjectAccessReviews().Create(review)
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// GKE doesn't enable the SAR endpoint. Without this endpoint, we cannot determine if the policy engine
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// has adjusted as expected. In this case, simply wait one second and hope it's up to date
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if apierrors.IsNotFound(err) {
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time.Sleep(1 * time.Second)
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return true, nil
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}
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if err != nil {
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return false, err
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}
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if response.Status.Allowed != allowed {
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return false, nil
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}
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return true, nil
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})
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return err
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}
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