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verber.go
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/
verber.go
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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 common
import (
"fmt"
"k8s.io/kubernetes/pkg/client/restclient"
"k8s.io/kubernetes/pkg/runtime"
)
// ResourceVerber is a struct responsible for doing common verb operations on resources, like
// DELETE, PUT, UPDATE.
type ResourceVerber struct {
client RESTClient
extensionsClient RESTClient
appsClient RESTClient
batchClient RESTClient
}
func (verber *ResourceVerber) getRESTClientByType(clientType ClientType) RESTClient {
switch clientType {
case ClientTypeExtensionClient:
return verber.extensionsClient
case ClientTypeAppsClient:
return verber.appsClient
case ClientTypeBatchClient:
return verber.batchClient
default:
return verber.client
}
}
// RESTClient is an interface for REST operations used in this file.
type RESTClient interface {
Delete() *restclient.Request
Put() *restclient.Request
Get() *restclient.Request
}
// NewResourceVerber creates a new resource verber that uses the given client for performing
// operations.
func NewResourceVerber(client, extensionsClient, appsClient,
batchClient RESTClient) ResourceVerber {
return ResourceVerber{client, extensionsClient, appsClient, batchClient}
}
// Delete deletes the resource of the given kind in the given namespace with the given name.
func (verber *ResourceVerber) Delete(kind string, namespace string, name string) error {
resourceSpec, ok := kindToAPIMapping[kind]
if !ok {
return fmt.Errorf("Unknown resource kind: %s", kind)
}
client := verber.getRESTClientByType(resourceSpec.ClientType)
return client.Delete().
Namespace(namespace).
Resource(resourceSpec.Resource).
Name(name).
Do().
Error()
}
// Put puts new resource version of the given kind in the given namespace with the given name.
func (verber *ResourceVerber) Put(kind string, namespace string, name string,
object runtime.Object) error {
resourceSpec, ok := kindToAPIMapping[kind]
if !ok {
return fmt.Errorf("Unknown resource kind: %s", kind)
}
client := verber.getRESTClientByType(resourceSpec.ClientType)
return client.Put().
Namespace(namespace).
Resource(resourceSpec.Resource).
Name(name).
Body(object).
Do().
Error()
}
// Get gets the resource of the given kind in the given namespace with the given name.
func (verber *ResourceVerber) Get(kind string, namespace string, name string) (runtime.Object, error) {
resourceSpec, ok := kindToAPIMapping[kind]
if !ok {
return nil, fmt.Errorf("Unknown resource kind: %s", kind)
}
client := verber.getRESTClientByType(resourceSpec.ClientType)
result := &runtime.Unknown{}
err := client.Get().
Namespace(namespace).
Resource(resourceSpec.Resource).
Name(name).
Do().
Into(result)
return result, err
}