config.go

Documentation: k8s.io/kubernetes/cmd/kube-apiserver/app

     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/apiserver/pkg/util/webhook"
    22  	aggregatorapiserver "k8s.io/kube-aggregator/pkg/apiserver"
    23  	"k8s.io/kubernetes/cmd/kube-apiserver/app/options"
    24  	"k8s.io/kubernetes/pkg/controlplane"
    25  	"k8s.io/kubernetes/pkg/controlplane/apiserver"
    26  )
    27  
    28  type Config struct {
    29  	Options options.CompletedOptions
    30  
    31  	Aggregator    *aggregatorapiserver.Config
    32  	ControlPlane  *controlplane.Config
    33  	ApiExtensions *apiextensionsapiserver.Config
    34  
    35  	ExtraConfig
    36  }
    37  
    38  type ExtraConfig struct {
    39  }
    40  
    41  type completedConfig struct {
    42  	Options options.CompletedOptions
    43  
    44  	Aggregator    aggregatorapiserver.CompletedConfig
    45  	ControlPlane  controlplane.CompletedConfig
    46  	ApiExtensions apiextensionsapiserver.CompletedConfig
    47  
    48  	ExtraConfig
    49  }
    50  
    51  type CompletedConfig struct {
    52  	// Embed a private pointer that cannot be instantiated outside of this package.
    53  	*completedConfig
    54  }
    55  
    56  func (c *Config) Complete() (CompletedConfig, error) {
    57  	return CompletedConfig{&completedConfig{
    58  		Options: c.Options,
    59  
    60  		Aggregator:    c.Aggregator.Complete(),
    61  		ControlPlane:  c.ControlPlane.Complete(),
    62  		ApiExtensions: c.ApiExtensions.Complete(),
    63  
    64  		ExtraConfig: c.ExtraConfig,
    65  	}}, nil
    66  }
    67  
    68  // NewConfig creates all the resources for running kube-apiserver, but runs none of them.
    69  func NewConfig(opts options.CompletedOptions) (*Config, error) {
    70  	c := &Config{
    71  		Options: opts,
    72  	}
    73  
    74  	controlPlane, serviceResolver, pluginInitializer, err := CreateKubeAPIServerConfig(opts)
    75  	if err != nil {
    76  		return nil, err
    77  	}
    78  	c.ControlPlane = controlPlane
    79  
    80  	apiExtensions, err := apiserver.CreateAPIExtensionsConfig(*controlPlane.GenericConfig, controlPlane.ExtraConfig.VersionedInformers, pluginInitializer, opts.CompletedOptions, opts.MasterCount,
    81  		serviceResolver, webhook.NewDefaultAuthenticationInfoResolverWrapper(controlPlane.ExtraConfig.ProxyTransport, controlPlane.GenericConfig.EgressSelector, controlPlane.GenericConfig.LoopbackClientConfig, controlPlane.GenericConfig.TracerProvider))
    82  	if err != nil {
    83  		return nil, err
    84  	}
    85  	c.ApiExtensions = apiExtensions
    86  
    87  	aggregator, err := createAggregatorConfig(*controlPlane.GenericConfig, opts.CompletedOptions, controlPlane.ExtraConfig.VersionedInformers, serviceResolver, controlPlane.ExtraConfig.ProxyTransport, controlPlane.ExtraConfig.PeerProxy, pluginInitializer)
    88  	if err != nil {
    89  		return nil, err
    90  	}
    91  	c.Aggregator = aggregator
    92  
    93  	return c, nil
    94  }
    95
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