mirror of https://github.com/k3s-io/k3s
136 lines
4.9 KiB
Go
136 lines
4.9 KiB
Go
/*
|
|
Copyright 2018 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 options
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"net/url"
|
|
|
|
"github.com/spf13/pflag"
|
|
|
|
"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
|
|
"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
|
|
"k8s.io/apiextensions-apiserver/pkg/apiserver"
|
|
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
|
|
utilerrors "k8s.io/apimachinery/pkg/util/errors"
|
|
genericregistry "k8s.io/apiserver/pkg/registry/generic"
|
|
genericapiserver "k8s.io/apiserver/pkg/server"
|
|
genericoptions "k8s.io/apiserver/pkg/server/options"
|
|
"k8s.io/apiserver/pkg/util/proxy"
|
|
"k8s.io/apiserver/pkg/util/webhook"
|
|
corev1 "k8s.io/client-go/listers/core/v1"
|
|
)
|
|
|
|
const defaultEtcdPathPrefix = "/registry/apiextensions.kubernetes.io"
|
|
|
|
// CustomResourceDefinitionsServerOptions describes the runtime options of an apiextensions-apiserver.
|
|
type CustomResourceDefinitionsServerOptions struct {
|
|
RecommendedOptions *genericoptions.RecommendedOptions
|
|
APIEnablement *genericoptions.APIEnablementOptions
|
|
|
|
StdOut io.Writer
|
|
StdErr io.Writer
|
|
}
|
|
|
|
// NewCustomResourceDefinitionsServerOptions creates default options of an apiextensions-apiserver.
|
|
func NewCustomResourceDefinitionsServerOptions(out, errOut io.Writer) *CustomResourceDefinitionsServerOptions {
|
|
o := &CustomResourceDefinitionsServerOptions{
|
|
RecommendedOptions: genericoptions.NewRecommendedOptions(
|
|
defaultEtcdPathPrefix,
|
|
apiserver.Codecs.LegacyCodec(v1beta1.SchemeGroupVersion, v1.SchemeGroupVersion),
|
|
genericoptions.NewProcessInfo("apiextensions-apiserver", "kube-system"),
|
|
),
|
|
APIEnablement: genericoptions.NewAPIEnablementOptions(),
|
|
|
|
StdOut: out,
|
|
StdErr: errOut,
|
|
}
|
|
|
|
return o
|
|
}
|
|
|
|
// AddFlags adds the apiextensions-apiserver flags to the flagset.
|
|
func (o CustomResourceDefinitionsServerOptions) AddFlags(fs *pflag.FlagSet) {
|
|
o.RecommendedOptions.AddFlags(fs)
|
|
o.APIEnablement.AddFlags(fs)
|
|
}
|
|
|
|
// Validate validates the apiextensions-apiserver options.
|
|
func (o CustomResourceDefinitionsServerOptions) Validate() error {
|
|
errors := []error{}
|
|
errors = append(errors, o.RecommendedOptions.Validate()...)
|
|
errors = append(errors, o.APIEnablement.Validate(apiserver.Scheme)...)
|
|
return utilerrors.NewAggregate(errors)
|
|
}
|
|
|
|
// Complete fills in missing options.
|
|
func (o *CustomResourceDefinitionsServerOptions) Complete() error {
|
|
return nil
|
|
}
|
|
|
|
// Config returns an apiextensions-apiserver configuration.
|
|
func (o CustomResourceDefinitionsServerOptions) Config() (*apiserver.Config, error) {
|
|
// TODO have a "real" external address
|
|
if err := o.RecommendedOptions.SecureServing.MaybeDefaultWithSelfSignedCerts("localhost", nil, []net.IP{net.ParseIP("127.0.0.1")}); err != nil {
|
|
return nil, fmt.Errorf("error creating self-signed certificates: %v", err)
|
|
}
|
|
|
|
serverConfig := genericapiserver.NewRecommendedConfig(apiserver.Codecs)
|
|
if err := o.RecommendedOptions.ApplyTo(serverConfig); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := o.APIEnablement.ApplyTo(&serverConfig.Config, apiserver.DefaultAPIResourceConfigSource(), apiserver.Scheme); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
config := &apiserver.Config{
|
|
GenericConfig: serverConfig,
|
|
ExtraConfig: apiserver.ExtraConfig{
|
|
CRDRESTOptionsGetter: NewCRDRESTOptionsGetter(*o.RecommendedOptions.Etcd),
|
|
ServiceResolver: &serviceResolver{serverConfig.SharedInformerFactory.Core().V1().Services().Lister()},
|
|
AuthResolverWrapper: webhook.NewDefaultAuthenticationInfoResolverWrapper(nil, serverConfig.LoopbackClientConfig),
|
|
},
|
|
}
|
|
return config, nil
|
|
}
|
|
|
|
// NewCRDRESTOptionsGetter create a RESTOptionsGetter for CustomResources.
|
|
func NewCRDRESTOptionsGetter(etcdOptions genericoptions.EtcdOptions) genericregistry.RESTOptionsGetter {
|
|
ret := apiserver.CRDRESTOptionsGetter{
|
|
StorageConfig: etcdOptions.StorageConfig,
|
|
StoragePrefix: etcdOptions.StorageConfig.Prefix,
|
|
EnableWatchCache: etcdOptions.EnableWatchCache,
|
|
DefaultWatchCacheSize: etcdOptions.DefaultWatchCacheSize,
|
|
EnableGarbageCollection: etcdOptions.EnableGarbageCollection,
|
|
DeleteCollectionWorkers: etcdOptions.DeleteCollectionWorkers,
|
|
CountMetricPollPeriod: etcdOptions.StorageConfig.CountMetricPollPeriod,
|
|
}
|
|
ret.StorageConfig.Codec = unstructured.UnstructuredJSONScheme
|
|
|
|
return ret
|
|
}
|
|
|
|
type serviceResolver struct {
|
|
services corev1.ServiceLister
|
|
}
|
|
|
|
func (r *serviceResolver) ResolveEndpoint(namespace, name string, port int32) (*url.URL, error) {
|
|
return proxy.ResolveCluster(r.services, namespace, name, port)
|
|
}
|