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cluster_role_binding.go
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cluster_role_binding.go
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// Copyright 2019 Cruise LLC
//
// 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
// https://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 resource
import (
"context"
admissionv1 "k8s.io/api/admission/v1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// ClusterRoleBindingResource contains the information needed for processing by a Policy
type ClusterRoleBindingResource struct {
ClusterRoleBinding rbacv1.ClusterRoleBinding
ResourceName string
ResourceKind string
}
// GetClusterRoleBindingResource extracts a ClusterRoleBindingResource from an AdmissionRequest
func GetClusterRoleBindingResource(ctx context.Context, ar *admissionv1.AdmissionRequest) *ClusterRoleBindingResource {
c := GetResourceCache(ctx)
return c.getOrSet(cacheKeyClusterRoleBinding, func() interface{} {
return decodeClusterRoleBindingResource(ar)
}).(*ClusterRoleBindingResource)
}
func decodeClusterRoleBindingResource(ar *admissionv1.AdmissionRequest) *ClusterRoleBindingResource {
switch ar.Kind {
case metav1.GroupVersionKind{Group: "rbac.authorization.k8s.io", Version: "v1", Kind: "ClusterRoleBinding"}:
crb := rbacv1.ClusterRoleBinding{}
if err := decodeObject(ar.Object.Raw, &crb); err != nil {
return nil
}
return &ClusterRoleBindingResource{
ClusterRoleBinding: crb,
ResourceName: GetResourceName(crb.ObjectMeta),
ResourceKind: "ClusterRoleBinding",
}
default:
return nil
}
}