cmd/kube-controller-manager/app/options/validatingadmissionpolicycontroller.go

/*
Copyright 2023 The Kubernetes Authors.

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 options

import (
	"fmt"

	"github.com/spf13/pflag"

	validatingadmissionpolicystatusconfig "k8s.io/kubernetes/pkg/controller/validatingadmissionpolicystatus/config"
)

// ValidatingAdmissionPolicyStatusControllerOptions holds the ValidatingAdmissionPolicyStatusController options.
type ValidatingAdmissionPolicyStatusControllerOptions struct {
	*validatingadmissionpolicystatusconfig.ValidatingAdmissionPolicyStatusControllerConfiguration
}

// AddFlags adds flags related to ValidatingAdmissionPolicyStatusController for controller manager to the specified FlagSet.
func (o *ValidatingAdmissionPolicyStatusControllerOptions) AddFlags(fs *pflag.FlagSet) {
	if o == nil {
		return
	}

	fs.Int32Var(&o.ConcurrentPolicySyncs, "concurrent-validating-admission-policy-status-syncs", o.ConcurrentPolicySyncs, "The number of ValidatingAdmissionPolicyStatusController workers that are allowed to sync concurrently.")
}

// ApplyTo fills up ValidatingAdmissionPolicyStatusController config with options.
func (o *ValidatingAdmissionPolicyStatusControllerOptions) ApplyTo(cfg *validatingadmissionpolicystatusconfig.ValidatingAdmissionPolicyStatusControllerConfiguration) error {
	if o == nil {
		return nil
	}

	cfg.ConcurrentPolicySyncs = o.ConcurrentPolicySyncs

	return nil
}

// Validate checks validation of ValidatingAdmissionPolicyStatusControllerOptions.
func (o *ValidatingAdmissionPolicyStatusControllerOptions) Validate() []error {
	if o == nil {
		return nil
	}
	var errs []error
	if o.ConcurrentPolicySyncs <= 0 {
		// omits controller or flag names because the CLI already includes these in the message.
		errs = append(errs, fmt.Errorf("must be positive, got %d", o.ConcurrentPolicySyncs))
	}
	return errs
}