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config.go
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config.go
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// Copyright (c) 2019 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 cmd
import (
"fmt"
"github.com/gardener/gardener-extensions/controllers/provider-azure/pkg/apis/config"
configloader "github.com/gardener/gardener-extensions/controllers/provider-azure/pkg/apis/config/loader"
"github.com/spf13/pflag"
)
// ConfigOptions are command line options that can be set for config.ControllerConfiguration.
type ConfigOptions struct {
// Kubeconfig is the path to a kubeconfig.
ConfigFilePath string
config *Config
}
// Config is a completed controller configuration.
type Config struct {
// Config is the controller configuration.
Config *config.ControllerConfiguration
}
func (c *ConfigOptions) buildConfig() (*config.ControllerConfiguration, error) {
if len(c.ConfigFilePath) == 0 {
return nil, fmt.Errorf("config file path not set")
}
return configloader.LoadFromFile(c.ConfigFilePath)
}
// Complete implements RESTCompleter.Complete.
func (c *ConfigOptions) Complete() error {
config, err := c.buildConfig()
if err != nil {
return err
}
c.config = &Config{config}
return nil
}
// Completed returns the completed Config. Only call this if `Complete` was successful.
func (c *ConfigOptions) Completed() *Config {
return c.config
}
// AddFlags implements Flagger.AddFlags.
func (c *ConfigOptions) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&c.ConfigFilePath, "config-file", "", "path to the controller manager configuration file")
}
// Apply sets the values of this Config in the given config.ControllerConfiguration.
func (c *Config) Apply(cfg *config.ControllerConfiguration) {
*cfg = *c.Config
}
// ApplyMachineImages sets the given machine images to those of this Config.
func (c *Config) ApplyMachineImages(machineImages *[]config.MachineImage) {
*machineImages = c.Config.MachineImages
}
// ApplyETCDStorage sets the given etcd storage configuration to that of this Config.
func (c *Config) ApplyETCDStorage(etcdStorage *config.ETCDStorage) {
*etcdStorage = c.Config.ETCD.Storage
}
// ApplyETCDBackup sets the given etcd backup configuration to that of this Config.
func (c *Config) ApplyETCDBackup(etcdBackup *config.ETCDBackup) {
*etcdBackup = c.Config.ETCD.Backup
}
// Options initializes empty config.ControllerConfiguration, applies the set values and returns it.
func (c *Config) Options() config.ControllerConfiguration {
var cfg config.ControllerConfiguration
c.Apply(&cfg)
return cfg
}