/
options.go
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/
options.go
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// Copyright (c) 2020 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 (
"github.com/spf13/pflag"
"sigs.k8s.io/controller-runtime/pkg/manager"
)
// Option is a compound interface type for an option for the resource-manager.
type Option interface {
Flagger
Completer
}
// Flagger can add needed flags to a FlagSet.
type Flagger interface {
AddFlags(*pflag.FlagSet)
}
// Completer can complete some configuration options.
type Completer interface {
Complete() error
}
// AddAllFlags adds all Flaggers to the given FlagSet.
func AddAllFlags(fs *pflag.FlagSet, f ...Flagger) {
for _, flagger := range f {
flagger.AddFlags(fs)
}
}
// AddToMangerFunc is a function which will add a controller or something similar to a Manager.
type AddToMangerFunc func(manager.Manager) error
// AddAllToManager calls all AddToManagerFuncs.
func AddAllToManager(mgr manager.Manager, all ...AddToMangerFunc) error {
for _, add := range all {
if err := add(mgr); err != nil {
return err
}
}
return nil
}
// CompleteAll completes all Completers.
func CompleteAll(c ...Completer) error {
for _, completer := range c {
if err := completer.Complete(); err != nil {
return err
}
}
return nil
}