feat: add crd gen

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

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

@@ -0,0 +1,135 @@
+/*
+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 (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apiserver/pkg/endpoints/request"
+)
+
+// ScopeNamer handles accessing names from requests and objects
+type ScopeNamer interface {
+	// Namespace returns the appropriate namespace value from the request (may be empty) or an
+	// error.
+	Namespace(req *http.Request) (namespace string, err error)
+	// Name returns the name from the request, and an optional namespace value if this is a namespace
+	// scoped call. An error is returned if the name is not available.
+	Name(req *http.Request) (namespace, name string, err error)
+	// ObjectName returns the namespace and name from an object if they exist, or an error if the object
+	// does not support names.
+	ObjectName(obj runtime.Object) (namespace, name string, err error)
+	// SetSelfLink sets the provided URL onto the object. The method should return nil if the object
+	// does not support selfLinks.
+	SetSelfLink(obj runtime.Object, url string) error
+	// GenerateLink creates an encoded URI for a given runtime object that represents the canonical path
+	// and query.
+	GenerateLink(requestInfo *request.RequestInfo, obj runtime.Object) (uri string, err error)
+	// GenerateListLink creates an encoded URI for a list that represents the canonical path and query.
+	GenerateListLink(req *http.Request) (uri string, err error)
+}
+
+type ContextBasedNaming struct {
+	SelfLinker    runtime.SelfLinker
+	ClusterScoped bool
+
+	SelfLinkPathPrefix string
+	SelfLinkPathSuffix string
+}
+
+// ContextBasedNaming implements ScopeNamer
+var _ ScopeNamer = ContextBasedNaming{}
+
+func (n ContextBasedNaming) SetSelfLink(obj runtime.Object, url string) error {
+	return n.SelfLinker.SetSelfLink(obj, url)
+}
+
+func (n ContextBasedNaming) Namespace(req *http.Request) (namespace string, err error) {
+	requestInfo, ok := request.RequestInfoFrom(req.Context())
+	if !ok {
+		return "", fmt.Errorf("missing requestInfo")
+	}
+	return requestInfo.Namespace, nil
+}
+
+func (n ContextBasedNaming) Name(req *http.Request) (namespace, name string, err error) {
+	requestInfo, ok := request.RequestInfoFrom(req.Context())
+	if !ok {
+		return "", "", fmt.Errorf("missing requestInfo")
+	}
+	ns, err := n.Namespace(req)
+	if err != nil {
+		return "", "", err
+	}
+
+	if len(requestInfo.Name) == 0 {
+		return "", "", errEmptyName
+	}
+	return ns, requestInfo.Name, nil
+}
+
+func (n ContextBasedNaming) GenerateLink(requestInfo *request.RequestInfo, obj runtime.Object) (uri string, err error) {
+	namespace, name, err := n.ObjectName(obj)
+	if err == errEmptyName && len(requestInfo.Name) > 0 {
+		name = requestInfo.Name
+	} else if err != nil {
+		return "", err
+	}
+	if len(namespace) == 0 && len(requestInfo.Namespace) > 0 {
+		namespace = requestInfo.Namespace
+	}
+
+	if n.ClusterScoped {
+		return n.SelfLinkPathPrefix + url.QueryEscape(name) + n.SelfLinkPathSuffix, nil
+	}
+
+	return n.SelfLinkPathPrefix +
+			url.QueryEscape(namespace) +
+			"/" + url.QueryEscape(requestInfo.Resource) + "/" +
+			url.QueryEscape(name) +
+			n.SelfLinkPathSuffix,
+		nil
+}
+
+func (n ContextBasedNaming) GenerateListLink(req *http.Request) (uri string, err error) {
+	if len(req.URL.RawPath) > 0 {
+		return req.URL.RawPath, nil
+	}
+	return req.URL.EscapedPath(), nil
+}
+
+func (n ContextBasedNaming) ObjectName(obj runtime.Object) (namespace, name string, err error) {
+	name, err = n.SelfLinker.Name(obj)
+	if err != nil {
+		return "", "", err
+	}
+	if len(name) == 0 {
+		return "", "", errEmptyName
+	}
+	namespace, err = n.SelfLinker.Namespace(obj)
+	if err != nil {
+		return "", "", err
+	}
+	return namespace, name, err
+}
+
+// errEmptyName is returned when API requests do not fill the name section of the path.
+var errEmptyName = errors.NewBadRequest("name must be provided")