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mutator.go
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mutator.go
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// Copyright 2023 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 machinecontrollermanager
import (
"context"
"fmt"
"slices"
rbacv1 "k8s.io/api/rbac/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
type mutator struct{}
func (m *mutator) Mutate(_ context.Context, newObj, _ client.Object) error {
if newObj.GetName() != "system:machine-controller-manager-runtime" {
return nil
}
clusterRole, ok := newObj.(*rbacv1.ClusterRole)
if !ok {
return fmt.Errorf("unexpected object, got %T wanted *rbacv1.ClusterRole", newObj)
}
for _, rule := range clusterRole.Rules {
if slices.Contains(rule.APIGroups, "") &&
slices.Contains(rule.Resources, "services") &&
slices.Contains(rule.Verbs, "*") {
return nil
}
}
clusterRole.Rules = append(clusterRole.Rules, rbacv1.PolicyRule{
APIGroups: []string{""},
Resources: []string{"services"},
Verbs: []string{"*"},
})
return nil
}