working commit

2026-03-13 19:02:42 +02:00
parent bebbf79c7a
commit 5c1da77f4c
1329 changed files with 314708 additions and 39 deletions
@@ -0,0 +1,92 @@
+/*
+Copyright 2014 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 resource
+
+import (
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/watch"
+)
+
+// Selector is a Visitor for resources that match a label selector.
+type Selector struct {
+	Client        RESTClient
+	Mapping       *meta.RESTMapping
+	Namespace     string
+	LabelSelector string
+	FieldSelector string
+	LimitChunks   int64
+}
+
+// NewSelector creates a resource selector which hides details of getting items by their label selector.
+func NewSelector(client RESTClient, mapping *meta.RESTMapping, namespace, labelSelector, fieldSelector string, limitChunks int64) *Selector {
+	return &Selector{
+		Client:        client,
+		Mapping:       mapping,
+		Namespace:     namespace,
+		LabelSelector: labelSelector,
+		FieldSelector: fieldSelector,
+		LimitChunks:   limitChunks,
+	}
+}
+
+// Visit implements Visitor and uses request chunking by default.
+func (r *Selector) Visit(fn VisitorFunc) error {
+	helper := NewHelper(r.Client, r.Mapping)
+	initialOpts := metav1.ListOptions{
+		LabelSelector: r.LabelSelector,
+		FieldSelector: r.FieldSelector,
+		Limit:         r.LimitChunks,
+	}
+	return FollowContinue(&initialOpts, func(options metav1.ListOptions) (runtime.Object, error) {
+		list, err := helper.List(
+			r.Namespace,
+			r.ResourceMapping().GroupVersionKind.GroupVersion().String(),
+			&options,
+		)
+		if err != nil {
+			return nil, EnhanceListError(err, options, r.Mapping.Resource.String())
+		}
+		resourceVersion, _ := metadataAccessor.ResourceVersion(list)
+
+		info := &Info{
+			Client:  r.Client,
+			Mapping: r.Mapping,
+
+			Namespace:       r.Namespace,
+			ResourceVersion: resourceVersion,
+
+			Object: list,
+		}
+
+		if err := fn(info, nil); err != nil {
+			return nil, err
+		}
+		return list, nil
+	})
+}
+
+func (r *Selector) Watch(resourceVersion string) (watch.Interface, error) {
+	return NewHelper(r.Client, r.Mapping).Watch(r.Namespace, r.ResourceMapping().GroupVersionKind.GroupVersion().String(),
+		&metav1.ListOptions{ResourceVersion: resourceVersion, LabelSelector: r.LabelSelector, FieldSelector: r.FieldSelector})
+}
+
+// ResourceMapping returns the mapping for this resource and implements ResourceMapping
+func (r *Selector) ResourceMapping() *meta.RESTMapping {
+	return r.Mapping
+}