backup.go

/*
Copyright 2025 Rancher Labs, Inc.

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.
*/

// Code generated by main. DO NOT EDIT.

package v1

import (
	"context"
	"time"

	v1 "github.com/rancher/backup-restore-operator/pkg/apis/resources.cattle.io/v1"
	"github.com/rancher/wrangler/v2/pkg/apply"
	"github.com/rancher/wrangler/v2/pkg/condition"
	"github.com/rancher/wrangler/v2/pkg/generic"
	"github.com/rancher/wrangler/v2/pkg/kv"
	"k8s.io/apimachinery/pkg/api/equality"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
)

// BackupController interface for managing Backup resources.
type BackupController interface {
	generic.NonNamespacedControllerInterface[*v1.Backup, *v1.BackupList]
}

// BackupClient interface for managing Backup resources in Kubernetes.
type BackupClient interface {
	generic.NonNamespacedClientInterface[*v1.Backup, *v1.BackupList]
}

// BackupCache interface for retrieving Backup resources in memory.
type BackupCache interface {
	generic.NonNamespacedCacheInterface[*v1.Backup]
}

type BackupStatusHandler func(obj *v1.Backup, status v1.BackupStatus) (v1.BackupStatus, error)

type BackupGeneratingHandler func(obj *v1.Backup, status v1.BackupStatus) ([]runtime.Object, v1.BackupStatus, error)

func RegisterBackupStatusHandler(ctx context.Context, controller BackupController, condition condition.Cond, name string, handler BackupStatusHandler) {
	statusHandler := &backupStatusHandler{
		client:    controller,
		condition: condition,
		handler:   handler,
	}
	controller.AddGenericHandler(ctx, name, generic.FromObjectHandlerToHandler(statusHandler.sync))
}

func RegisterBackupGeneratingHandler(ctx context.Context, controller BackupController, apply apply.Apply,
	condition condition.Cond, name string, handler BackupGeneratingHandler, opts *generic.GeneratingHandlerOptions) {
	statusHandler := &backupGeneratingHandler{
		BackupGeneratingHandler: handler,
		apply:                   apply,
		name:                    name,
		gvk:                     controller.GroupVersionKind(),
	}
	if opts != nil {
		statusHandler.opts = *opts
	}
	controller.OnChange(ctx, name, statusHandler.Remove)
	RegisterBackupStatusHandler(ctx, controller, condition, name, statusHandler.Handle)
}

type backupStatusHandler struct {
	client    BackupClient
	condition condition.Cond
	handler   BackupStatusHandler
}

func (a *backupStatusHandler) sync(key string, obj *v1.Backup) (*v1.Backup, error) {
	if obj == nil {
		return obj, nil
	}

	origStatus := obj.Status.DeepCopy()
	obj = obj.DeepCopy()
	newStatus, err := a.handler(obj, obj.Status)
	if err != nil {
		// Revert to old status on error
		newStatus = *origStatus.DeepCopy()
	}

	if a.condition != "" {
		if errors.IsConflict(err) {
			a.condition.SetError(&newStatus, "", nil)
		} else {
			a.condition.SetError(&newStatus, "", err)
		}
	}
	if !equality.Semantic.DeepEqual(origStatus, &newStatus) {
		if a.condition != "" {
			// Since status has changed, update the lastUpdatedTime
			a.condition.LastUpdated(&newStatus, time.Now().UTC().Format(time.RFC3339))
		}

		var newErr error
		obj.Status = newStatus
		newObj, newErr := a.client.UpdateStatus(obj)
		if err == nil {
			err = newErr
		}
		if newErr == nil {
			obj = newObj
		}
	}
	return obj, err
}

type backupGeneratingHandler struct {
	BackupGeneratingHandler
	apply apply.Apply
	opts  generic.GeneratingHandlerOptions
	gvk   schema.GroupVersionKind
	name  string
}

func (a *backupGeneratingHandler) Remove(key string, obj *v1.Backup) (*v1.Backup, error) {
	if obj != nil {
		return obj, nil
	}

	obj = &v1.Backup{}
	obj.Namespace, obj.Name = kv.RSplit(key, "/")
	obj.SetGroupVersionKind(a.gvk)

	return nil, generic.ConfigureApplyForObject(a.apply, obj, &a.opts).
		WithOwner(obj).
		WithSetID(a.name).
		ApplyObjects()
}

func (a *backupGeneratingHandler) Handle(obj *v1.Backup, status v1.BackupStatus) (v1.BackupStatus, error) {
	if !obj.DeletionTimestamp.IsZero() {
		return status, nil
	}

	objs, newStatus, err := a.BackupGeneratingHandler(obj, status)
	if err != nil {
		return newStatus, err
	}

	return newStatus, generic.ConfigureApplyForObject(a.apply, obj, &a.opts).
		WithOwner(obj).
		WithSetID(a.name).
		ApplyObjects(objs...)
}