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config.go
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/
config.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2021 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
*/
package config
import (
"fmt"
"net"
"k8s.io/apiserver/pkg/authentication/request/anonymous"
"k8s.io/apiserver/pkg/authorization/authorizerfactory"
apiserver "k8s.io/apiserver/pkg/server"
restclient "k8s.io/client-go/rest"
versionedclientset "tkestack.io/tke/api/client/clientset/versioned"
meshapiconfig "tkestack.io/tke/cmd/tke-mesh-api/app/config"
meshapioptions "tkestack.io/tke/cmd/tke-mesh-api/app/options"
"tkestack.io/tke/cmd/tke-mesh-controller/app/options"
controllerconfig "tkestack.io/tke/pkg/controller/config"
controlleroptions "tkestack.io/tke/pkg/controller/options"
meshconfig "tkestack.io/tke/pkg/mesh/apis/config"
meshconfigvalidation "tkestack.io/tke/pkg/mesh/apis/config/validation"
"tkestack.io/tke/pkg/util/log"
)
// Config is the running configuration structure of the TKE controller manager.
type Config struct {
SecureServing *apiserver.SecureServingInfo
// LoopbackClientConfig is a config for a privileged loopback connection
LoopbackClientConfig *restclient.Config
Authentication apiserver.AuthenticationInfo
Authorization apiserver.AuthorizationInfo
ServerName string
// the client only used for leader election
LeaderElectionClient *versionedclientset.Clientset
// the rest config for the mesh apiserver
MeshAPIServerClientConfig *restclient.Config
// the rest config for the platform apiserver
PlatformAPIServerClientConfig *restclient.Config
Component controlleroptions.ComponentConfiguration
MeshConfig *meshconfig.MeshConfiguration
}
// CreateConfigFromOptions creates a running configuration instance based
// on a given TKE apiserver command line or configuration file option.
func CreateConfigFromOptions(serverName string, opts *options.Options) (*Config, error) {
if err := opts.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)
}
meshAPIServerClientConfig, ok, err := controllerconfig.BuildClientConfig(opts.MeshAPIClient)
if err != nil {
return nil, err
}
if !ok {
return nil, fmt.Errorf("failed to initialize client config of mesh API server")
}
// shallow copy, do not modify the apiServerClientConfig.Timeout.
config := *meshAPIServerClientConfig
config.Timeout = opts.Component.LeaderElection.RenewDeadline
leaderElectionClient := versionedclientset.NewForConfigOrDie(restclient.AddUserAgent(&config, "leader-election"))
meshConfig, err := meshapioptions.NewMeshConfiguration()
if err != nil {
log.Error("Failed create default mesh configuration", log.Err(err))
return nil, err
}
// load config file, if provided
if configFile := opts.MeshConfig; len(configFile) > 0 {
meshConfig, err = meshapiconfig.LoadConfigFile(configFile)
if err != nil {
log.Error("Failed to load mesh configuration file", log.String("configFile", configFile), log.Err(err))
return nil, err
}
}
// We always validate the local configuration (command line + config file).
// This is the default "last-known-good" config for dynamic config, and must always remain valid.
if err := meshconfigvalidation.ValidateConfiguration(meshConfig); err != nil {
log.Error("Failed to validate mesh configuration", log.Err(err))
return nil, err
}
controllerManagerConfig := &Config{
ServerName: serverName,
LeaderElectionClient: leaderElectionClient,
MeshAPIServerClientConfig: meshAPIServerClientConfig,
Authorization: apiserver.AuthorizationInfo{
Authorizer: authorizerfactory.NewAlwaysAllowAuthorizer(),
},
Authentication: apiserver.AuthenticationInfo{
Authenticator: anonymous.NewAuthenticator(),
},
MeshConfig: meshConfig,
}
platformAPIServerClientConfig, ok, err := controllerconfig.BuildClientConfig(opts.PlatformAPIClient)
if err != nil {
return nil, err
}
if ok && platformAPIServerClientConfig != nil {
controllerManagerConfig.PlatformAPIServerClientConfig = platformAPIServerClientConfig
}
if err := opts.Component.ApplyTo(&controllerManagerConfig.Component); err != nil {
return nil, err
}
if err := opts.SecureServing.ApplyTo(&controllerManagerConfig.SecureServing, &controllerManagerConfig.LoopbackClientConfig); err != nil {
return nil, err
}
if err := opts.Debug.ApplyTo(&controllerManagerConfig.Component.Debugging); err != nil {
return nil, err
}
return controllerManagerConfig, nil
}