mirror of https://github.com/kubernetes/kops.git
118 lines
3.1 KiB
Go
118 lines
3.1 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 mockkubeapiserver
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import (
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"fmt"
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"io"
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"net/http"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/klog/v2"
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)
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// patchResource is a request to patch a single resource
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type patchResource struct {
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resourceRequestBase
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}
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// Run serves the http request
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func (req *patchResource) Run(s *MockKubeAPIServer) error {
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gr := schema.GroupResource{Group: req.Group, Resource: req.Resource}
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id := types.NamespacedName{Namespace: req.Namespace, Name: req.Name}
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var existing *unstructured.Unstructured
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objects := s.objects[gr]
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if objects != nil {
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existing = objects.Objects[id]
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}
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bodyBytes, err := io.ReadAll(req.r.Body)
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if err != nil {
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return err
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}
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body := &unstructured.Unstructured{}
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if err := body.UnmarshalJSON(bodyBytes); err != nil {
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return fmt.Errorf("failed to parse payload: %w", err)
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}
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// TODO: We need to implement patch properly
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klog.Infof("patch request %#v", string(bodyBytes))
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if existing == nil {
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// TODO: Only if server-side-apply
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if objects == nil {
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objects = &objectList{
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GroupResource: gr,
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Objects: make(map[types.NamespacedName]*unstructured.Unstructured),
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}
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s.objects[gr] = objects
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}
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if req.SubResource != "" {
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// TODO: Is this correct for server-side-apply?
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return req.writeErrorResponse(http.StatusNotFound)
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}
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patched := body
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objects.Objects[id] = patched
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s.objectChanged(patched)
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return req.writeResponse(patched)
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}
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if req.SubResource == "" {
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if err := applyPatch(existing.Object, body.Object); err != nil {
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klog.Warningf("error from patch: %v", err)
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return err
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}
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} else {
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// TODO: We need to implement put properly
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return fmt.Errorf("unknown subresource %q", req.SubResource)
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}
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objects.Objects[id] = existing
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s.objectChanged(existing)
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return req.writeResponse(existing)
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}
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func applyPatch(existing, patch map[string]interface{}) error {
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for k, patchValue := range patch {
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existingValue := existing[k]
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switch patchValue := patchValue.(type) {
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case string, int64:
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existing[k] = patchValue
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case map[string]interface{}:
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if existingValue == nil {
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existing[k] = patchValue
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} else {
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existingMap, ok := existingValue.(map[string]interface{})
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if !ok {
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return fmt.Errorf("unexpected type mismatch, expected map got %T", existingValue)
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}
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if err := applyPatch(existingMap, patchValue); err != nil {
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return err
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}
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}
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default:
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return fmt.Errorf("type %T not handled in patch", patchValue)
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}
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}
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return nil
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}
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