/
config.go
136 lines (122 loc) · 4.69 KB
/
config.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 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"
"path/filepath"
genericapiserver "k8s.io/apiserver/pkg/server"
"k8s.io/kube-openapi/pkg/common"
generatedopenapi "tkestack.io/tke/api/openapi"
"tkestack.io/tke/cmd/tke-audit-api/app/options"
"tkestack.io/tke/pkg/apiserver"
"tkestack.io/tke/pkg/apiserver/authentication"
"tkestack.io/tke/pkg/apiserver/authorization"
"tkestack.io/tke/pkg/apiserver/handler"
"tkestack.io/tke/pkg/apiserver/openapi"
audit "tkestack.io/tke/pkg/audit/api"
auditconfig "tkestack.io/tke/pkg/audit/apis/config"
"tkestack.io/tke/pkg/audit/apis/config/validation"
"tkestack.io/tke/pkg/audit/config/configfiles"
auditopenapi "tkestack.io/tke/pkg/audit/openapi"
utilfs "tkestack.io/tke/pkg/util/filesystem"
"tkestack.io/tke/pkg/util/log"
)
const (
license = "Apache 2.0"
title = "Tencent Kubernetes Engine Audit API"
)
// Config is the running configuration structure of the TKE controller manager.
type Config struct {
ServerName string
GenericAPIServerConfig *genericapiserver.Config
AuditConfig *auditconfig.AuditConfiguration
}
// 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) {
auditConfig, err := options.NewAuditConfiguration()
if err != nil {
log.Error("Failed create default audit configuration", log.Err(err))
return nil, err
}
// load config file, if provided
if configFile := opts.AuditConfig; len(configFile) > 0 {
auditConfig, err = loadConfigFile(configFile)
if err != nil {
log.Error("Failed to load audit configuration file", log.String("configFile", configFile), log.Err(err))
return nil, err
}
}
if err := validation.ValidateAuditConfiguration(auditConfig); err != nil {
log.Error("Failed to validate audit configuration", log.Err(err))
return nil, err
}
genericAPIServerConfig := genericapiserver.NewConfig(apiserver.Codecs)
var ignoredAuthPathPrefixes []string
ignoredAuthPathPrefixes = append(ignoredAuthPathPrefixes, audit.IgnoredAuthPathPrefixes()...)
genericAPIServerConfig.BuildHandlerChainFunc = handler.BuildHandlerChain(ignoredAuthPathPrefixes, nil, nil)
genericAPIServerConfig.EnableIndex = false
genericAPIServerConfig.EnableDiscovery = false
genericAPIServerConfig.EnableProfiling = false
if err := opts.Generic.ApplyTo(genericAPIServerConfig); err != nil {
return nil, err
}
if err := opts.SecureServing.ApplyTo(&genericAPIServerConfig.SecureServing, &genericAPIServerConfig.LoopbackClientConfig); err != nil {
return nil, err
}
openapi.SetupOpenAPI(genericAPIServerConfig, func(callback common.ReferenceCallback) map[string]common.OpenAPIDefinition {
result := make(map[string]common.OpenAPIDefinition)
generated := generatedopenapi.GetOpenAPIDefinitions(callback)
for k, v := range generated {
result[k] = v
}
customs := auditopenapi.GetOpenAPIDefinitions(callback)
for k, v := range customs {
result[k] = v
}
return result
}, title, license, opts.Generic.ExternalHost, opts.Generic.ExternalPort)
if err := authentication.SetupAuthentication(genericAPIServerConfig, opts.Authentication); err != nil {
return nil, err
}
if err := authorization.SetupAuthorization(genericAPIServerConfig, opts.Authorization); err != nil {
return nil, err
}
return &Config{
ServerName: serverName,
GenericAPIServerConfig: genericAPIServerConfig,
AuditConfig: auditConfig,
}, nil
}
func loadConfigFile(name string) (*auditconfig.AuditConfiguration, error) {
const errFmt = "failed to load audit config file %s, error %v"
// compute absolute path based on current working dir
auditConfigFile, err := filepath.Abs(name)
if err != nil {
return nil, fmt.Errorf(errFmt, name, err)
}
loader, err := configfiles.NewFsLoader(utilfs.DefaultFs{}, auditConfigFile)
if err != nil {
return nil, fmt.Errorf(errFmt, name, err)
}
kc, err := loader.Load()
if err != nil {
return nil, fmt.Errorf(errFmt, name, err)
}
return kc, err
}