72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
/*
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Copyright 2020 The cert-manager 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 handlers
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import (
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"fmt"
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"net/http"
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"github.com/go-logr/logr"
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admissionv1 "k8s.io/api/admission/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"github.com/jetstack/cert-manager/pkg/internal/api/mutation"
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logf "github.com/jetstack/cert-manager/pkg/logs"
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)
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type RegistryBackedMutator struct {
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log logr.Logger
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decoder runtime.Decoder
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registry *mutation.Registry
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}
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func NewRegistryBackedMutator(log logr.Logger, scheme *runtime.Scheme, registry *mutation.Registry) *RegistryBackedMutator {
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factory := serializer.NewCodecFactory(scheme)
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return &RegistryBackedMutator{
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log: log,
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decoder: factory.UniversalDecoder(),
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registry: registry,
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}
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}
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func (c *RegistryBackedMutator) Mutate(admissionSpec *admissionv1.AdmissionRequest) *admissionv1.AdmissionResponse {
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status := &admissionv1.AdmissionResponse{}
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status.UID = admissionSpec.UID
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// Generate a patch from the appropriate functions installed in the mutation registry
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patch, err := c.registry.Mutate(admissionSpec)
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if err != nil {
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status.Result = &metav1.Status{
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Status: metav1.StatusFailure, Code: http.StatusInternalServerError, Reason: metav1.StatusReasonInternalError,
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Message: fmt.Sprintf("Failed to mutate object: %v", err.Error()),
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}
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return status
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}
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// set the AdmissionReview status
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jsonPatchType := admissionv1.PatchTypeJSONPatch
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status.Patch = patch
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status.PatchType = &jsonPatchType
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status.Allowed = true
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c.log.V(logf.DebugLevel).Info("generated patch", "patch", string(patch))
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return status
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}
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