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apiserver.go
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apiserver.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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
//
// http://www.apache.org/licenses/LICENSE-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 OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package apiserver
import (
"fmt"
corerest "github.com/gardener/gardener/pkg/registry/core/rest"
seedmanagementrest "github.com/gardener/gardener/pkg/registry/seedmanagement/rest"
settingsrest "github.com/gardener/gardener/pkg/registry/settings/rest"
"github.com/spf13/pflag"
genericapiserver "k8s.io/apiserver/pkg/server"
)
type ExtraConfig struct {
// Place you custom config here.
}
type Config struct {
GenericConfig *genericapiserver.RecommendedConfig
ExtraConfig ExtraConfig
}
// GardenerServer contains state for a Gardener API server.
type GardenerServer struct {
GenericAPIServer *genericapiserver.GenericAPIServer
}
type completedConfig struct {
GenericConfig genericapiserver.CompletedConfig
ExtraConfig *ExtraConfig
}
type CompletedConfig struct {
*completedConfig
}
// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
func (cfg *Config) Complete() CompletedConfig {
c := completedConfig{
cfg.GenericConfig.Complete(),
&cfg.ExtraConfig,
}
return CompletedConfig{&c}
}
// New returns a new instance of GardenerServer from the given config.
func (c completedConfig) New() (*GardenerServer, error) {
genericServer, err := c.GenericConfig.New("gardener-apiserver", genericapiserver.NewEmptyDelegate())
if err != nil {
return nil, err
}
var (
s = &GardenerServer{GenericAPIServer: genericServer}
coreAPIGroupInfo = (corerest.StorageProvider{}).NewRESTStorage(c.GenericConfig.RESTOptionsGetter)
seedManagementAPIGroupInfo = (seedmanagementrest.StorageProvider{}).NewRESTStorage(c.GenericConfig.RESTOptionsGetter)
settingsAPIGroupInfo = (settingsrest.StorageProvider{}).NewRESTStorage(c.GenericConfig.RESTOptionsGetter)
)
if err := s.GenericAPIServer.InstallAPIGroups(&coreAPIGroupInfo, &settingsAPIGroupInfo, &seedManagementAPIGroupInfo); err != nil {
return nil, err
}
return s, nil
}
// ExtraOptions is used for providing additional options to the Gardener API Server
type ExtraOptions struct {
ClusterIdentity string
}
// Validate checks if the required flags are set
func (o *ExtraOptions) Validate() []error {
allErrors := []error{}
if len(o.ClusterIdentity) == 0 {
allErrors = append(allErrors, fmt.Errorf("--cluster-identity must be specified"))
}
return allErrors
}
// AddFlags adds flags related to cluster identity to the options
func (o *ExtraOptions) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&o.ClusterIdentity, "cluster-identity", o.ClusterIdentity, "This flag is used for specifying the identity of the Garden cluster")
}