mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
e204d863a5
* Update Kubernetes to v1.22.1 * Update dependent modules to track with upstream Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
93 lines
2.8 KiB
Go
93 lines
2.8 KiB
Go
/*
|
|
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
|
|
}
|