feat: add crd gen

Signed-off-by: runzexia <runzexia@yunify.com>

vendor/k8s.io/apiserver/pkg/endpoints/handlers/response.go

@@ -0,0 +1,206 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 handlers
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"
+	"k8s.io/apiserver/pkg/endpoints/handlers/responsewriters"
+)
+
+// transformResponseObject takes an object loaded from storage and performs any necessary transformations.
+// Will write the complete response object.
+func transformResponseObject(ctx context.Context, scope RequestScope, req *http.Request, w http.ResponseWriter, statusCode int, result runtime.Object) {
+	// TODO: fetch the media type much earlier in request processing and pass it into this method.
+	trace := scope.Trace
+	mediaType, _, err := negotiation.NegotiateOutputMediaType(req, scope.Serializer, &scope)
+	if err != nil {
+		status := responsewriters.ErrorToAPIStatus(err)
+		trace.Step("Writing raw JSON response")
+		responsewriters.WriteRawJSON(int(status.Code), status, w)
+		return
+	}
+
+	// If conversion was allowed by the scope, perform it before writing the response
+	if target := mediaType.Convert; target != nil {
+		switch {
+
+		case target.Kind == "PartialObjectMetadata" && target.GroupVersion() == metav1beta1.SchemeGroupVersion:
+			if meta.IsListType(result) {
+				// TODO: this should be calculated earlier
+				err = newNotAcceptableError(fmt.Sprintf("you requested PartialObjectMetadata, but the requested object is a list (%T)", result))
+				scope.err(err, w, req)
+				return
+			}
+			m, err := meta.Accessor(result)
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+			partial := meta.AsPartialObjectMetadata(m)
+			partial.GetObjectKind().SetGroupVersionKind(metav1beta1.SchemeGroupVersion.WithKind("PartialObjectMetadata"))
+
+			// renegotiate under the internal version
+			_, info, err := negotiation.NegotiateOutputMediaType(req, metainternalversion.Codecs, &scope)
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+			encoder := metainternalversion.Codecs.EncoderForVersion(info.Serializer, metav1beta1.SchemeGroupVersion)
+			trace.Step(fmt.Sprintf("Serializing response as type %s", info.MediaType))
+			responsewriters.SerializeObject(info.MediaType, encoder, w, req, statusCode, partial)
+			return
+
+		case target.Kind == "PartialObjectMetadataList" && target.GroupVersion() == metav1beta1.SchemeGroupVersion:
+			if !meta.IsListType(result) {
+				// TODO: this should be calculated earlier
+				err = newNotAcceptableError(fmt.Sprintf("you requested PartialObjectMetadataList, but the requested object is not a list (%T)", result))
+				scope.err(err, w, req)
+				return
+			}
+			list := &metav1beta1.PartialObjectMetadataList{}
+			trace.Step("Processing list items")
+			err := meta.EachListItem(result, func(obj runtime.Object) error {
+				m, err := meta.Accessor(obj)
+				if err != nil {
+					return err
+				}
+				partial := meta.AsPartialObjectMetadata(m)
+				partial.GetObjectKind().SetGroupVersionKind(metav1beta1.SchemeGroupVersion.WithKind("PartialObjectMetadata"))
+				list.Items = append(list.Items, partial)
+				return nil
+			})
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+
+			// renegotiate under the internal version
+			_, info, err := negotiation.NegotiateOutputMediaType(req, metainternalversion.Codecs, &scope)
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+			encoder := metainternalversion.Codecs.EncoderForVersion(info.Serializer, metav1beta1.SchemeGroupVersion)
+			trace.Step(fmt.Sprintf("Serializing response as type %s", info.MediaType))
+			responsewriters.SerializeObject(info.MediaType, encoder, w, req, statusCode, list)
+			return
+
+		case target.Kind == "Table" && target.GroupVersion() == metav1beta1.SchemeGroupVersion:
+			// TODO: relax the version abstraction
+			// TODO: skip if this is a status response (delete without body)?
+
+			opts := &metav1beta1.TableOptions{}
+			trace.Step("Decoding parameters")
+			if err := metav1beta1.ParameterCodec.DecodeParameters(req.URL.Query(), metav1beta1.SchemeGroupVersion, opts); err != nil {
+				scope.err(err, w, req)
+				return
+			}
+
+			trace.Step("Converting to table")
+			table, err := scope.TableConvertor.ConvertToTable(ctx, result, opts)
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+
+			trace.Step("Processing rows")
+			for i := range table.Rows {
+				item := &table.Rows[i]
+				switch opts.IncludeObject {
+				case metav1beta1.IncludeObject:
+					item.Object.Object, err = scope.Convertor.ConvertToVersion(item.Object.Object, scope.Kind.GroupVersion())
+					if err != nil {
+						scope.err(err, w, req)
+						return
+					}
+				// TODO: rely on defaulting for the value here?
+				case metav1beta1.IncludeMetadata, "":
+					m, err := meta.Accessor(item.Object.Object)
+					if err != nil {
+						scope.err(err, w, req)
+						return
+					}
+					// TODO: turn this into an internal type and do conversion in order to get object kind automatically set?
+					partial := meta.AsPartialObjectMetadata(m)
+					partial.GetObjectKind().SetGroupVersionKind(metav1beta1.SchemeGroupVersion.WithKind("PartialObjectMetadata"))
+					item.Object.Object = partial
+				case metav1beta1.IncludeNone:
+					item.Object.Object = nil
+				default:
+					// TODO: move this to validation on the table options?
+					err = errors.NewBadRequest(fmt.Sprintf("unrecognized includeObject value: %q", opts.IncludeObject))
+					scope.err(err, w, req)
+				}
+			}
+
+			// renegotiate under the internal version
+			_, info, err := negotiation.NegotiateOutputMediaType(req, metainternalversion.Codecs, &scope)
+			if err != nil {
+				scope.err(err, w, req)
+				return
+			}
+			encoder := metainternalversion.Codecs.EncoderForVersion(info.Serializer, metav1beta1.SchemeGroupVersion)
+			trace.Step(fmt.Sprintf("Serializing response as type %s", info.MediaType))
+			responsewriters.SerializeObject(info.MediaType, encoder, w, req, statusCode, table)
+			return
+
+		default:
+			// this block should only be hit if scope AllowsConversion is incorrect
+			accepted, _ := negotiation.MediaTypesForSerializer(metainternalversion.Codecs)
+			err := negotiation.NewNotAcceptableError(accepted)
+			status := responsewriters.ErrorToAPIStatus(err)
+			trace.Step("Writing raw JSON response")
+			responsewriters.WriteRawJSON(int(status.Code), status, w)
+			return
+		}
+	}
+
+	trace.Step("Writing response")
+	responsewriters.WriteObject(statusCode, scope.Kind.GroupVersion(), scope.Serializer, result, w, req)
+}
+
+// errNotAcceptable indicates Accept negotiation has failed
+type errNotAcceptable struct {
+	message string
+}
+
+func newNotAcceptableError(message string) error {
+	return errNotAcceptable{message}
+}
+
+func (e errNotAcceptable) Error() string {
+	return e.message
+}
+
+func (e errNotAcceptable) Status() metav1.Status {
+	return metav1.Status{
+		Status:  metav1.StatusFailure,
+		Code:    http.StatusNotAcceptable,
+		Reason:  metav1.StatusReason("NotAcceptable"),
+		Message: e.Error(),
+	}
+}