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/*
Copyright 2018 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 dynamic
import (
"io"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/rest"
)
type dynamicClient struct {
client *rest.RESTClient
}
var _ Interface = &dynamicClient{}
func NewForConfig(inConfig *rest.Config) (Interface, error) {
config := rest.CopyConfig(inConfig)
// for serializing the options
config.GroupVersion = &schema.GroupVersion{}
config.APIPath = "/if-you-see-this-search-for-the-break"
config.AcceptContentTypes = "application/json"
config.ContentType = "application/json"
config.NegotiatedSerializer = basicNegotiatedSerializer{} // this gets used for discovery and error handling types
if config.UserAgent == "" {
config.UserAgent = rest.DefaultKubernetesUserAgent()
}
restClient, err := rest.RESTClientFor(config)
if err != nil {
return nil, err
}
return &dynamicClient{client: restClient}, nil
}
type dynamicResourceClient struct {
client *dynamicClient
namespace string
resource schema.GroupVersionResource
}
func (c *dynamicClient) Resource(resource schema.GroupVersionResource) NamespaceableResourceInterface {
return &dynamicResourceClient{client: c, resource: resource}
}
func (c *dynamicResourceClient) Namespace(ns string) ResourceInterface {
ret := *c
ret.namespace = ns
return &ret
}
func (c *dynamicResourceClient) Create(obj *unstructured.Unstructured, subresources ...string) (*unstructured.Unstructured, error) {
outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
if err != nil {
return nil, err
}
name := ""
if len(subresources) > 0 {
accessor, err := meta.Accessor(obj)
if err != nil {
return nil, err
}
name = accessor.GetName()
}
result := c.client.client.Post().AbsPath(append(c.makeURLSegments(name), subresources...)...).Body(outBytes).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
return uncastObj.(*unstructured.Unstructured), nil
}
func (c *dynamicResourceClient) Update(obj *unstructured.Unstructured, subresources ...string) (*unstructured.Unstructured, error) {
accessor, err := meta.Accessor(obj)
if err != nil {
return nil, err
}
outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
if err != nil {
return nil, err
}
result := c.client.client.Put().AbsPath(append(c.makeURLSegments(accessor.GetName()), subresources...)...).Body(outBytes).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
return uncastObj.(*unstructured.Unstructured), nil
}
func (c *dynamicResourceClient) UpdateStatus(obj *unstructured.Unstructured) (*unstructured.Unstructured, error) {
accessor, err := meta.Accessor(obj)
if err != nil {
return nil, err
}
outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
if err != nil {
return nil, err
}
result := c.client.client.Put().AbsPath(append(c.makeURLSegments(accessor.GetName()), "status")...).Body(outBytes).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
return uncastObj.(*unstructured.Unstructured), nil
}
func (c *dynamicResourceClient) Delete(name string, opts *metav1.DeleteOptions, subresources ...string) error {
if opts == nil {
opts = &metav1.DeleteOptions{}
}
deleteOptionsByte, err := runtime.Encode(deleteOptionsCodec.LegacyCodec(schema.GroupVersion{Version: "v1"}), opts)
if err != nil {
return err
}
result := c.client.client.Delete().AbsPath(append(c.makeURLSegments(name), subresources...)...).Body(deleteOptionsByte).Do()
return result.Error()
}
func (c *dynamicResourceClient) DeleteCollection(opts *metav1.DeleteOptions, listOptions metav1.ListOptions) error {
if opts == nil {
opts = &metav1.DeleteOptions{}
}
deleteOptionsByte, err := runtime.Encode(deleteOptionsCodec.LegacyCodec(schema.GroupVersion{Version: "v1"}), opts)
if err != nil {
return err
}
result := c.client.client.Delete().AbsPath(c.makeURLSegments("")...).Body(deleteOptionsByte).SpecificallyVersionedParams(&listOptions, dynamicParameterCodec, versionV1).Do()
return result.Error()
}
func (c *dynamicResourceClient) Get(name string, opts metav1.GetOptions, subresources ...string) (*unstructured.Unstructured, error) {
result := c.client.client.Get().AbsPath(append(c.makeURLSegments(name), subresources...)...).SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
return uncastObj.(*unstructured.Unstructured), nil
}
func (c *dynamicResourceClient) List(opts metav1.ListOptions) (*unstructured.UnstructuredList, error) {
result := c.client.client.Get().AbsPath(c.makeURLSegments("")...).SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
if list, ok := uncastObj.(*unstructured.UnstructuredList); ok {
return list, nil
}
list, err := uncastObj.(*unstructured.Unstructured).ToList()
if err != nil {
return nil, err
}
return list, nil
}
func (c *dynamicResourceClient) Watch(opts metav1.ListOptions) (watch.Interface, error) {
internalGV := schema.GroupVersions{
{Group: c.resource.Group, Version: runtime.APIVersionInternal},
// always include the legacy group as a decoding target to handle non-error `Status` return types
{Group: "", Version: runtime.APIVersionInternal},
}
s := &rest.Serializers{
Encoder: watchNegotiatedSerializerInstance.EncoderForVersion(watchJsonSerializerInfo.Serializer, c.resource.GroupVersion()),
Decoder: watchNegotiatedSerializerInstance.DecoderToVersion(watchJsonSerializerInfo.Serializer, internalGV),
RenegotiatedDecoder: func(contentType string, params map[string]string) (runtime.Decoder, error) {
return watchNegotiatedSerializerInstance.DecoderToVersion(watchJsonSerializerInfo.Serializer, internalGV), nil
},
StreamingSerializer: watchJsonSerializerInfo.StreamSerializer.Serializer,
Framer: watchJsonSerializerInfo.StreamSerializer.Framer,
}
wrappedDecoderFn := func(body io.ReadCloser) streaming.Decoder {
framer := s.Framer.NewFrameReader(body)
return streaming.NewDecoder(framer, s.StreamingSerializer)
}
opts.Watch = true
return c.client.client.Get().AbsPath(c.makeURLSegments("")...).
SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
WatchWithSpecificDecoders(wrappedDecoderFn, unstructured.UnstructuredJSONScheme)
}
func (c *dynamicResourceClient) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (*unstructured.Unstructured, error) {
result := c.client.client.Patch(pt).AbsPath(append(c.makeURLSegments(name), subresources...)...).Body(data).Do()
if err := result.Error(); err != nil {
return nil, err
}
retBytes, err := result.Raw()
if err != nil {
return nil, err
}
uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
if err != nil {
return nil, err
}
return uncastObj.(*unstructured.Unstructured), nil
}
func (c *dynamicResourceClient) makeURLSegments(name string) []string {
url := []string{}
if len(c.resource.Group) == 0 {
url = append(url, "api")
} else {
url = append(url, "apis", c.resource.Group)
}
url = append(url, c.resource.Version)
if len(c.namespace) > 0 {
url = append(url, "namespaces", c.namespace)
}
url = append(url, c.resource.Resource)
if len(name) > 0 {
url = append(url, name)
}
return url
}
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