k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/cmd/kube-apiserver/app/config.go (about)

     1  /*
     2  Copyright 2023 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package app
    18  
    19  import (
    20  	apiextensionsapiserver "k8s.io/apiextensions-apiserver/pkg/apiserver"
    21  	"k8s.io/apimachinery/pkg/runtime"
    22  	"k8s.io/apiserver/pkg/util/webhook"
    23  	aggregatorapiserver "k8s.io/kube-aggregator/pkg/apiserver"
    24  	aggregatorscheme "k8s.io/kube-aggregator/pkg/apiserver/scheme"
    25  
    26  	"k8s.io/kubernetes/cmd/kube-apiserver/app/options"
    27  	"k8s.io/kubernetes/pkg/api/legacyscheme"
    28  	"k8s.io/kubernetes/pkg/controlplane"
    29  	controlplaneapiserver "k8s.io/kubernetes/pkg/controlplane/apiserver"
    30  	generatedopenapi "k8s.io/kubernetes/pkg/generated/openapi"
    31  )
    32  
    33  type Config struct {
    34  	Options options.CompletedOptions
    35  
    36  	Aggregator    *aggregatorapiserver.Config
    37  	KubeAPIs      *controlplane.Config
    38  	ApiExtensions *apiextensionsapiserver.Config
    39  
    40  	ExtraConfig
    41  }
    42  
    43  type ExtraConfig struct {
    44  }
    45  
    46  type completedConfig struct {
    47  	Options options.CompletedOptions
    48  
    49  	Aggregator    aggregatorapiserver.CompletedConfig
    50  	KubeAPIs      controlplane.CompletedConfig
    51  	ApiExtensions apiextensionsapiserver.CompletedConfig
    52  
    53  	ExtraConfig
    54  }
    55  
    56  type CompletedConfig struct {
    57  	// Embed a private pointer that cannot be instantiated outside of this package.
    58  	*completedConfig
    59  }
    60  
    61  func (c *Config) Complete() (CompletedConfig, error) {
    62  	return CompletedConfig{&completedConfig{
    63  		Options: c.Options,
    64  
    65  		Aggregator:    c.Aggregator.Complete(),
    66  		KubeAPIs:      c.KubeAPIs.Complete(),
    67  		ApiExtensions: c.ApiExtensions.Complete(),
    68  
    69  		ExtraConfig: c.ExtraConfig,
    70  	}}, nil
    71  }
    72  
    73  // NewConfig creates all the resources for running kube-apiserver, but runs none of them.
    74  func NewConfig(opts options.CompletedOptions) (*Config, error) {
    75  	c := &Config{
    76  		Options: opts,
    77  	}
    78  
    79  	genericConfig, versionedInformers, storageFactory, err := controlplaneapiserver.BuildGenericConfig(
    80  		opts.CompletedOptions,
    81  		[]*runtime.Scheme{legacyscheme.Scheme, apiextensionsapiserver.Scheme, aggregatorscheme.Scheme},
    82  		controlplane.DefaultAPIResourceConfigSource(),
    83  		generatedopenapi.GetOpenAPIDefinitions,
    84  	)
    85  	if err != nil {
    86  		return nil, err
    87  	}
    88  
    89  	kubeAPIs, serviceResolver, pluginInitializer, err := CreateKubeAPIServerConfig(opts, genericConfig, versionedInformers, storageFactory)
    90  	if err != nil {
    91  		return nil, err
    92  	}
    93  	c.KubeAPIs = kubeAPIs
    94  
    95  	apiExtensions, err := controlplaneapiserver.CreateAPIExtensionsConfig(*kubeAPIs.ControlPlane.Generic, kubeAPIs.ControlPlane.VersionedInformers, pluginInitializer, opts.CompletedOptions, opts.MasterCount,
    96  		serviceResolver, webhook.NewDefaultAuthenticationInfoResolverWrapper(kubeAPIs.ControlPlane.ProxyTransport, kubeAPIs.ControlPlane.Generic.EgressSelector, kubeAPIs.ControlPlane.Generic.LoopbackClientConfig, kubeAPIs.ControlPlane.Generic.TracerProvider))
    97  	if err != nil {
    98  		return nil, err
    99  	}
   100  	c.ApiExtensions = apiExtensions
   101  
   102  	aggregator, err := controlplaneapiserver.CreateAggregatorConfig(*kubeAPIs.ControlPlane.Generic, opts.CompletedOptions, kubeAPIs.ControlPlane.VersionedInformers, serviceResolver, kubeAPIs.ControlPlane.ProxyTransport, kubeAPIs.ControlPlane.Extra.PeerProxy, pluginInitializer)
   103  	if err != nil {
   104  		return nil, err
   105  	}
   106  	c.Aggregator = aggregator
   107  
   108  	return c, nil
   109  }