mirror of
https://github.com/k3s-io/k3s.git
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e8381db778
* Update Kubernetes to v1.21.0 * Update to golang v1.16.2 * Update dependent modules to track with upstream * Switch to upstream flannel * Track changes to upstream cloud-controller-manager and FeatureGates Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
106 lines
4.7 KiB
Go
106 lines
4.7 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package app does all of the work necessary to create a Kubernetes
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// APIServer by binding together the API, master and APIServer infrastructure.
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// It can be configured and called directly or via the hyperkube framework.
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package app
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import (
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v1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
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apiextensionsapiserver "k8s.io/apiextensions-apiserver/pkg/apiserver"
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apiextensionsoptions "k8s.io/apiextensions-apiserver/pkg/cmd/server/options"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apiserver/pkg/admission"
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"k8s.io/apiserver/pkg/features"
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genericapiserver "k8s.io/apiserver/pkg/server"
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genericoptions "k8s.io/apiserver/pkg/server/options"
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"k8s.io/apiserver/pkg/util/feature"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/apiserver/pkg/util/webhook"
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kubeexternalinformers "k8s.io/client-go/informers"
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"k8s.io/kubernetes/cmd/kube-apiserver/app/options"
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)
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func createAPIExtensionsConfig(
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kubeAPIServerConfig genericapiserver.Config,
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externalInformers kubeexternalinformers.SharedInformerFactory,
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pluginInitializers []admission.PluginInitializer,
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commandOptions *options.ServerRunOptions,
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masterCount int,
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serviceResolver webhook.ServiceResolver,
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authResolverWrapper webhook.AuthenticationInfoResolverWrapper,
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) (*apiextensionsapiserver.Config, error) {
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// make a shallow copy to let us twiddle a few things
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// most of the config actually remains the same. We only need to mess with a couple items related to the particulars of the apiextensions
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genericConfig := kubeAPIServerConfig
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genericConfig.PostStartHooks = map[string]genericapiserver.PostStartHookConfigEntry{}
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genericConfig.RESTOptionsGetter = nil
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// override genericConfig.AdmissionControl with apiextensions' scheme,
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// because apiextentions apiserver should use its own scheme to convert resources.
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err := commandOptions.Admission.ApplyTo(
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&genericConfig,
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externalInformers,
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genericConfig.LoopbackClientConfig,
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feature.DefaultFeatureGate,
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pluginInitializers...)
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if err != nil {
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return nil, err
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}
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// copy the etcd options so we don't mutate originals.
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etcdOptions := *commandOptions.Etcd
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etcdOptions.StorageConfig.Paging = utilfeature.DefaultFeatureGate.Enabled(features.APIListChunking)
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// this is where the true decodable levels come from.
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etcdOptions.StorageConfig.Codec = apiextensionsapiserver.Codecs.LegacyCodec(v1beta1.SchemeGroupVersion, v1.SchemeGroupVersion)
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// prefer the more compact serialization (v1beta1) for storage until http://issue.k8s.io/82292 is resolved for objects whose v1 serialization is too big but whose v1beta1 serialization can be stored
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etcdOptions.StorageConfig.EncodeVersioner = runtime.NewMultiGroupVersioner(v1beta1.SchemeGroupVersion, schema.GroupKind{Group: v1beta1.GroupName})
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genericConfig.RESTOptionsGetter = &genericoptions.SimpleRestOptionsFactory{Options: etcdOptions}
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// override MergedResourceConfig with apiextensions defaults and registry
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if err := commandOptions.APIEnablement.ApplyTo(
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&genericConfig,
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apiextensionsapiserver.DefaultAPIResourceConfigSource(),
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apiextensionsapiserver.Scheme); err != nil {
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return nil, err
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}
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apiextensionsConfig := &apiextensionsapiserver.Config{
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GenericConfig: &genericapiserver.RecommendedConfig{
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Config: genericConfig,
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SharedInformerFactory: externalInformers,
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},
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ExtraConfig: apiextensionsapiserver.ExtraConfig{
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CRDRESTOptionsGetter: apiextensionsoptions.NewCRDRESTOptionsGetter(etcdOptions),
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MasterCount: masterCount,
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AuthResolverWrapper: authResolverWrapper,
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ServiceResolver: serviceResolver,
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},
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}
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// we need to clear the poststarthooks so we don't add them multiple times to all the servers (that fails)
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apiextensionsConfig.GenericConfig.PostStartHooks = map[string]genericapiserver.PostStartHookConfigEntry{}
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return apiextensionsConfig, nil
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}
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func createAPIExtensionsServer(apiextensionsConfig *apiextensionsapiserver.Config, delegateAPIServer genericapiserver.DelegationTarget) (*apiextensionsapiserver.CustomResourceDefinitions, error) {
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return apiextensionsConfig.Complete().New(delegateAPIServer)
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}
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