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6a75e7c40c
This commit is the main API piece of KEP-3257 (ClusterTrustBundles). This commit: * Adds the certificates.k8s.io/v1alpha1 API group * Adds the ClusterTrustBundle type. * Registers the new type in kube-apiserver. * Implements the type-specfic validation specified for ClusterTrustBundles: - spec.pemTrustAnchors must always be non-empty. - spec.signerName must be either empty or a valid signer name. - Changing spec.signerName is disallowed. * Implements the "attest" admission check to restrict actions on ClusterTrustBundles that include a signer name. Because it wasn't specified in the KEP, I chose to make attempts to update the signer name be validation errors, rather than silently ignored. I have tested this out by launching these changes in kind and manipulating ClusterTrustBundle objects in the resulting cluster using kubectl.
80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
/*
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Copyright 2022 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 storage
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apiserver/pkg/registry/generic"
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genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
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"k8s.io/apiserver/pkg/registry/rest"
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api "k8s.io/kubernetes/pkg/apis/certificates"
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"k8s.io/kubernetes/pkg/printers"
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printersinternal "k8s.io/kubernetes/pkg/printers/internalversion"
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printerstorage "k8s.io/kubernetes/pkg/printers/storage"
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"k8s.io/kubernetes/pkg/registry/certificates/clustertrustbundle"
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)
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// REST is a RESTStorage for ClusterTrustBundle.
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type REST struct {
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*genericregistry.Store
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}
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var _ rest.StandardStorage = &REST{}
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var _ rest.TableConvertor = &REST{}
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var _ genericregistry.GenericStore = &REST{}
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// NewREST returns a RESTStorage object for ClusterTrustBundle objects.
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func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, error) {
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store := &genericregistry.Store{
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NewFunc: func() runtime.Object { return &api.ClusterTrustBundle{} },
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NewListFunc: func() runtime.Object { return &api.ClusterTrustBundleList{} },
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DefaultQualifiedResource: api.Resource("clustertrustbundles"),
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SingularQualifiedResource: api.Resource("clustertrustbundle"),
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CreateStrategy: clustertrustbundle.Strategy,
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UpdateStrategy: clustertrustbundle.Strategy,
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DeleteStrategy: clustertrustbundle.Strategy,
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TableConvertor: printerstorage.TableConvertor{TableGenerator: printers.NewTableGenerator().With(printersinternal.AddHandlers)},
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}
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options := &generic.StoreOptions{
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RESTOptions: optsGetter,
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AttrFunc: getAttrs,
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}
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if err := store.CompleteWithOptions(options); err != nil {
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return nil, err
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}
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return &REST{store}, nil
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}
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func getAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
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bundle, ok := obj.(*api.ClusterTrustBundle)
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if !ok {
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return nil, nil, fmt.Errorf("not a clustertrustbundle")
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}
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selectableFields := generic.MergeFieldsSets(generic.ObjectMetaFieldsSet(&bundle.ObjectMeta, false), fields.Set{
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"spec.signerName": bundle.Spec.SignerName,
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})
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return labels.Set(bundle.Labels), selectableFields, nil
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}
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