mirror of https://github.com/k3s-io/k3s
98 lines
3.2 KiB
Go
98 lines
3.2 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package resource
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import (
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"fmt"
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"reflect"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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)
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// Mapper is a convenience struct for holding references to the three interfaces
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// needed to create Info for arbitrary objects.
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type Mapper struct {
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runtime.ObjectTyper
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meta.RESTMapper
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ClientMapper
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}
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// InfoForData creates an Info object for the given data. An error is returned
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// if any of the decoding or client lookup steps fail. Name and namespace will be
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// set into Info if the mapping's MetadataAccessor can retrieve them.
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func (m *Mapper) InfoForData(data []byte, source string) (*Info, error) {
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version, kind, err := m.DataVersionAndKind(data)
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if err != nil {
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return nil, fmt.Errorf("unable to get type info from %q: %v", source, err)
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}
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mapping, err := m.RESTMapping(kind, version)
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if err != nil {
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return nil, fmt.Errorf("unable to recognize %q: %v", source, err)
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}
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obj, err := mapping.Codec.Decode(data)
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if err != nil {
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return nil, fmt.Errorf("unable to load %q: %v", source, err)
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}
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client, err := m.ClientForMapping(mapping)
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if err != nil {
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return nil, fmt.Errorf("unable to connect to a server to handle %q: %v", mapping.Resource, err)
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}
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name, _ := mapping.MetadataAccessor.Name(obj)
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namespace, _ := mapping.MetadataAccessor.Namespace(obj)
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resourceVersion, _ := mapping.MetadataAccessor.ResourceVersion(obj)
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return &Info{
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Mapping: mapping,
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Client: client,
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Namespace: namespace,
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Name: name,
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Object: obj,
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ResourceVersion: resourceVersion,
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}, nil
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}
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// InfoForData creates an Info object for the given Object. An error is returned
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// if the object cannot be introspected. Name and namespace will be set into Info
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// if the mapping's MetadataAccessor can retrieve them.
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func (m *Mapper) InfoForObject(obj runtime.Object) (*Info, error) {
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version, kind, err := m.ObjectVersionAndKind(obj)
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if err != nil {
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return nil, fmt.Errorf("unable to get type info from the object %q: %v", reflect.TypeOf(obj), err)
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}
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mapping, err := m.RESTMapping(kind, version)
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if err != nil {
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return nil, fmt.Errorf("unable to recognize %q: %v", kind, err)
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}
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client, err := m.ClientForMapping(mapping)
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if err != nil {
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return nil, fmt.Errorf("unable to connect to a server to handle %q: %v", mapping.Resource, err)
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}
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name, _ := mapping.MetadataAccessor.Name(obj)
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namespace, _ := mapping.MetadataAccessor.Namespace(obj)
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resourceVersion, _ := mapping.MetadataAccessor.ResourceVersion(obj)
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return &Info{
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Mapping: mapping,
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Client: client,
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Namespace: namespace,
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Name: name,
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Object: obj,
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ResourceVersion: resourceVersion,
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}, nil
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}
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