mirror of
https://github.com/ceph/ceph-csi.git
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5af3fe5deb
this commits add the controller runtime and its dependency to the vendor. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
/*
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Copyright 2018 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 admission
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"gomodules.xyz/jsonpatch/v2"
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admissionv1beta1 "k8s.io/api/admission/v1beta1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
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)
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type multiMutating []Handler
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func (hs multiMutating) Handle(ctx context.Context, req Request) Response {
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patches := []jsonpatch.JsonPatchOperation{}
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for _, handler := range hs {
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resp := handler.Handle(ctx, req)
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if !resp.Allowed {
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return resp
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}
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if resp.PatchType != nil && *resp.PatchType != admissionv1beta1.PatchTypeJSONPatch {
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return Errored(http.StatusInternalServerError,
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fmt.Errorf("unexpected patch type returned by the handler: %v, only allow: %v",
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resp.PatchType, admissionv1beta1.PatchTypeJSONPatch))
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}
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patches = append(patches, resp.Patches...)
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}
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var err error
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marshaledPatch, err := json.Marshal(patches)
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if err != nil {
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return Errored(http.StatusBadRequest, fmt.Errorf("error when marshaling the patch: %w", err))
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}
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return Response{
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AdmissionResponse: admissionv1beta1.AdmissionResponse{
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Allowed: true,
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Result: &metav1.Status{
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Code: http.StatusOK,
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},
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Patch: marshaledPatch,
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PatchType: func() *admissionv1beta1.PatchType { pt := admissionv1beta1.PatchTypeJSONPatch; return &pt }(),
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},
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}
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}
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// InjectFunc injects the field setter into the handlers.
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func (hs multiMutating) InjectFunc(f inject.Func) error {
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// inject directly into the handlers. It would be more correct
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// to do this in a sync.Once in Handle (since we don't have some
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// other start/finalize-type method), but it's more efficient to
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// do it here, presumably.
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for _, handler := range hs {
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if err := f(handler); err != nil {
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return err
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}
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}
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return nil
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}
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// MultiMutatingHandler combines multiple mutating webhook handlers into a single
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// mutating webhook handler. Handlers are called in sequential order, and the first
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// `allowed: false` response may short-circuit the rest. Users must take care to
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// ensure patches are disjoint.
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func MultiMutatingHandler(handlers ...Handler) Handler {
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return multiMutating(handlers)
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}
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type multiValidating []Handler
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func (hs multiValidating) Handle(ctx context.Context, req Request) Response {
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for _, handler := range hs {
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resp := handler.Handle(ctx, req)
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if !resp.Allowed {
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return resp
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}
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}
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return Response{
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AdmissionResponse: admissionv1beta1.AdmissionResponse{
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Allowed: true,
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Result: &metav1.Status{
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Code: http.StatusOK,
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},
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},
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}
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}
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// MultiValidatingHandler combines multiple validating webhook handlers into a single
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// validating webhook handler. Handlers are called in sequential order, and the first
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// `allowed: false` response may short-circuit the rest.
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func MultiValidatingHandler(handlers ...Handler) Handler {
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return multiValidating(handlers)
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}
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// InjectFunc injects the field setter into the handlers.
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func (hs multiValidating) InjectFunc(f inject.Func) error {
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// inject directly into the handlers. It would be more correct
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// to do this in a sync.Once in Handle (since we don't have some
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// other start/finalize-type method), but it's more efficient to
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// do it here, presumably.
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for _, handler := range hs {
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if err := f(handler); err != nil {
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return err
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}
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}
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return nil
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}
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