/
context.go
136 lines (114 loc) · 4.23 KB
/
context.go
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/*
* Copyright 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
*
* 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 (
extensionschartrenderer "github.com/gardener/gardener/extensions/pkg/gardener/chartrenderer"
"github.com/gardener/gardener/pkg/chartrenderer"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/client-go/rest"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// ClientContext bundles the feature of providing injected scheme and client for
// the controller runtime. Additionally it offers a decoder using the scheme.
type ClientContext struct {
scheme *runtime.Scheme
decoder runtime.Decoder
client client.Client
}
// NewClientConntext offers the possibility to create a ClientContext without injection.
func NewClientContext(client client.Client, scheme *runtime.Scheme, decoder runtime.Decoder) ClientContext {
if decoder == nil && scheme != nil {
decoder = serializer.NewCodecFactory(scheme).UniversalDecoder()
}
return ClientContext{client: client, scheme: scheme, decoder: decoder}
}
// InjectScheme injects the given scheme into the valuesProvider.
func (cc *ClientContext) InjectScheme(scheme *runtime.Scheme) error {
cc.scheme = scheme
if scheme != nil {
cc.decoder = serializer.NewCodecFactory(scheme).UniversalDecoder()
}
return nil
}
// InjectClient injects the given client into the context.
func (cc *ClientContext) InjectClient(client client.Client) error {
cc.client = client
return nil
}
// Scheme returns the scheme of the context
func (cc *ClientContext) Scheme() *runtime.Scheme {
return cc.scheme
}
// Decoder returns a decoder for the scheme of the context
func (cc *ClientContext) Decoder() runtime.Decoder {
return cc.decoder
}
// Client returns the rest client of the context
func (cc *ClientContext) Client() client.Client {
return cc.client
}
////////////////////////////////////////////////////////////////////////////////
// RESTConfigContext extends the ClientContext with the REST config
// usable to create more specific clients.
type RESTConfigContext struct {
ClientContext
restConfig *rest.Config
}
// InjectConfig injects the given REST config into the context.
func (cc *RESTConfigContext) InjectConfig(config *rest.Config) error {
cc.restConfig = config
return nil
}
// RESTConfig returns the rest config of the context
func (cc *RESTConfigContext) RESTConfig() *rest.Config {
return cc.restConfig
}
////////////////////////////////////////////////////////////////////////////////
// ChartRendererContext extends the RESTConfigContext to additionally
// provide a chart renderer
type ChartRendererContext struct {
RESTConfigContext
factory extensionschartrenderer.Factory
chartRenderer chartrenderer.Interface
}
// NewChartRendererContext creates a new chart renderer context using a
// dedicated factory for the renderer,
func NewChartRendererContext(factory extensionschartrenderer.Factory) ChartRendererContext {
return ChartRendererContext{factory: factory}
}
// InjectConfig injects the given REST config into the context and
// creates an appropriate chart renderer
func (cc *ChartRendererContext) InjectConfig(config *rest.Config) error {
err := cc.RESTConfigContext.InjectConfig(config)
if err != nil {
return err
}
if cc.factory == nil {
cc.factory = extensionschartrenderer.DefaultFactory()
}
chartRenderer, err := cc.factory.NewForConfig(config)
if err != nil {
return err
}
cc.chartRenderer = chartRenderer
return nil
}
// ChartRenderer returns the chart renderer of the context
func (cc *ChartRendererContext) ChartRenderer() chartrenderer.Interface {
return cc.chartRenderer
}