| /* |
| 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 generic |
| |
| import ( |
| "fmt" |
| |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/runtime/schema" |
| ) |
| |
| // convertor converts objects to the desired version. |
| type convertor struct { |
| Scheme *runtime.Scheme |
| } |
| |
| // ConvertToGVK converts object to the desired gvk. |
| func (c *convertor) ConvertToGVK(obj runtime.Object, gvk schema.GroupVersionKind) (runtime.Object, error) { |
| // Unlike other resources, custom resources do not have internal version, so |
| // if obj is a custom resource, it should not need conversion. |
| if obj.GetObjectKind().GroupVersionKind() == gvk { |
| return obj, nil |
| } |
| out, err := c.Scheme.New(gvk) |
| if err != nil { |
| return nil, err |
| } |
| err = c.Scheme.Convert(obj, out, nil) |
| if err != nil { |
| return nil, err |
| } |
| return out, nil |
| } |
| |
| // Validate checks if the conversion has a scheme. |
| func (c *convertor) Validate() error { |
| if c.Scheme == nil { |
| return fmt.Errorf("the convertor requires a scheme") |
| } |
| return nil |
| } |