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apiserver.go
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apiserver.go
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/*
Copyright 2016 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 apiserver
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/version"
"k8s.io/apiserver/pkg/registry/rest"
genericapiserver "k8s.io/apiserver/pkg/server"
"k8s.io/sample-apiserver/pkg/apis/wardle"
"k8s.io/sample-apiserver/pkg/apis/wardle/install"
wardleregistry "k8s.io/sample-apiserver/pkg/registry"
fischerstorage "k8s.io/sample-apiserver/pkg/registry/wardle/fischer"
flunderstorage "k8s.io/sample-apiserver/pkg/registry/wardle/flunder"
)
var (
Scheme = runtime.NewScheme()
Codecs = serializer.NewCodecFactory(Scheme)
)
func init() {
install.Install(Scheme)
// we need to add the options to empty v1
// TODO fix the server code to avoid this
metav1.AddToGroupVersion(Scheme, schema.GroupVersion{Version: "v1"})
// TODO: keep the generic API server from wanting this
unversioned := schema.GroupVersion{Group: "", Version: "v1"}
Scheme.AddUnversionedTypes(unversioned,
&metav1.Status{},
&metav1.APIVersions{},
&metav1.APIGroupList{},
&metav1.APIGroup{},
&metav1.APIResourceList{},
)
}
type ExtraConfig struct {
// Place you custom config here.
}
type Config struct {
GenericConfig *genericapiserver.RecommendedConfig
ExtraConfig ExtraConfig
}
// WardleServer contains state for a Kubernetes cluster master/api server.
type WardleServer struct {
GenericAPIServer *genericapiserver.GenericAPIServer
}
type completedConfig struct {
GenericConfig genericapiserver.CompletedConfig
ExtraConfig *ExtraConfig
}
type CompletedConfig struct {
// Embed a private pointer that cannot be instantiated outside of this package.
*completedConfig
}
// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
func (cfg *Config) Complete() CompletedConfig {
c := completedConfig{
cfg.GenericConfig.Complete(),
&cfg.ExtraConfig,
}
c.GenericConfig.Version = &version.Info{
Major: "1",
Minor: "0",
}
return CompletedConfig{&c}
}
// New returns a new instance of WardleServer from the given config.
func (c completedConfig) New() (*WardleServer, error) {
genericServer, err := c.GenericConfig.New("sample-apiserver", genericapiserver.NewEmptyDelegate())
if err != nil {
return nil, err
}
s := &WardleServer{
GenericAPIServer: genericServer,
}
apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(wardle.GroupName, Scheme, metav1.ParameterCodec, Codecs)
v1alpha1storage := map[string]rest.Storage{}
v1alpha1storage["flunders"] = wardleregistry.RESTInPeace(flunderstorage.NewREST(Scheme, c.GenericConfig.RESTOptionsGetter))
v1alpha1storage["fischers"] = wardleregistry.RESTInPeace(fischerstorage.NewREST(Scheme, c.GenericConfig.RESTOptionsGetter))
apiGroupInfo.VersionedResourcesStorageMap["v1alpha1"] = v1alpha1storage
v1beta1storage := map[string]rest.Storage{}
v1beta1storage["flunders"] = wardleregistry.RESTInPeace(flunderstorage.NewREST(Scheme, c.GenericConfig.RESTOptionsGetter))
apiGroupInfo.VersionedResourcesStorageMap["v1beta1"] = v1beta1storage
if err := s.GenericAPIServer.InstallAPIGroup(&apiGroupInfo); err != nil {
return nil, err
}
return s, nil
}