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templateversion.go
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templateversion.go
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/*
Copyright 2024 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 v3
import (
"context"
"sync"
"time"
v3 "github.com/rancher/rancher/pkg/apis/management.cattle.io/v3"
"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"
)
// TemplateVersionController interface for managing TemplateVersion resources.
type TemplateVersionController interface {
generic.NonNamespacedControllerInterface[*v3.TemplateVersion, *v3.TemplateVersionList]
}
// TemplateVersionClient interface for managing TemplateVersion resources in Kubernetes.
type TemplateVersionClient interface {
generic.NonNamespacedClientInterface[*v3.TemplateVersion, *v3.TemplateVersionList]
}
// TemplateVersionCache interface for retrieving TemplateVersion resources in memory.
type TemplateVersionCache interface {
generic.NonNamespacedCacheInterface[*v3.TemplateVersion]
}
// TemplateVersionStatusHandler is executed for every added or modified TemplateVersion. Should return the new status to be updated
type TemplateVersionStatusHandler func(obj *v3.TemplateVersion, status v3.TemplateVersionStatus) (v3.TemplateVersionStatus, error)
// TemplateVersionGeneratingHandler is the top-level handler that is executed for every TemplateVersion event. It extends TemplateVersionStatusHandler by a returning a slice of child objects to be passed to apply.Apply
type TemplateVersionGeneratingHandler func(obj *v3.TemplateVersion, status v3.TemplateVersionStatus) ([]runtime.Object, v3.TemplateVersionStatus, error)
// RegisterTemplateVersionStatusHandler configures a TemplateVersionController to execute a TemplateVersionStatusHandler for every events observed.
// If a non-empty condition is provided, it will be updated in the status conditions for every handler execution
func RegisterTemplateVersionStatusHandler(ctx context.Context, controller TemplateVersionController, condition condition.Cond, name string, handler TemplateVersionStatusHandler) {
statusHandler := &templateVersionStatusHandler{
client: controller,
condition: condition,
handler: handler,
}
controller.AddGenericHandler(ctx, name, generic.FromObjectHandlerToHandler(statusHandler.sync))
}
// RegisterTemplateVersionGeneratingHandler configures a TemplateVersionController to execute a TemplateVersionGeneratingHandler for every events observed, passing the returned objects to the provided apply.Apply.
// If a non-empty condition is provided, it will be updated in the status conditions for every handler execution
func RegisterTemplateVersionGeneratingHandler(ctx context.Context, controller TemplateVersionController, apply apply.Apply,
condition condition.Cond, name string, handler TemplateVersionGeneratingHandler, opts *generic.GeneratingHandlerOptions) {
statusHandler := &templateVersionGeneratingHandler{
TemplateVersionGeneratingHandler: handler,
apply: apply,
name: name,
gvk: controller.GroupVersionKind(),
}
if opts != nil {
statusHandler.opts = *opts
}
controller.OnChange(ctx, name, statusHandler.Remove)
RegisterTemplateVersionStatusHandler(ctx, controller, condition, name, statusHandler.Handle)
}
type templateVersionStatusHandler struct {
client TemplateVersionClient
condition condition.Cond
handler TemplateVersionStatusHandler
}
// sync is executed on every resource addition or modification. Executes the configured handlers and sends the updated status to the Kubernetes API
func (a *templateVersionStatusHandler) sync(key string, obj *v3.TemplateVersion) (*v3.TemplateVersion, 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 templateVersionGeneratingHandler struct {
TemplateVersionGeneratingHandler
apply apply.Apply
opts generic.GeneratingHandlerOptions
gvk schema.GroupVersionKind
name string
seen sync.Map
}
// Remove handles the observed deletion of a resource, cascade deleting every associated resource previously applied
func (a *templateVersionGeneratingHandler) Remove(key string, obj *v3.TemplateVersion) (*v3.TemplateVersion, error) {
if obj != nil {
return obj, nil
}
obj = &v3.TemplateVersion{}
obj.Namespace, obj.Name = kv.RSplit(key, "/")
obj.SetGroupVersionKind(a.gvk)
if a.opts.UniqueApplyForResourceVersion {
a.seen.Delete(key)
}
return nil, generic.ConfigureApplyForObject(a.apply, obj, &a.opts).
WithOwner(obj).
WithSetID(a.name).
ApplyObjects()
}
// Handle executes the configured TemplateVersionGeneratingHandler and pass the resulting objects to apply.Apply, finally returning the new status of the resource
func (a *templateVersionGeneratingHandler) Handle(obj *v3.TemplateVersion, status v3.TemplateVersionStatus) (v3.TemplateVersionStatus, error) {
if !obj.DeletionTimestamp.IsZero() {
return status, nil
}
objs, newStatus, err := a.TemplateVersionGeneratingHandler(obj, status)
if err != nil {
return newStatus, err
}
if !a.isNewResourceVersion(obj) {
return newStatus, nil
}
err = generic.ConfigureApplyForObject(a.apply, obj, &a.opts).
WithOwner(obj).
WithSetID(a.name).
ApplyObjects(objs...)
if err != nil {
return newStatus, err
}
a.storeResourceVersion(obj)
return newStatus, nil
}
// isNewResourceVersion detects if a specific resource version was already successfully processed.
// Only used if UniqueApplyForResourceVersion is set in generic.GeneratingHandlerOptions
func (a *templateVersionGeneratingHandler) isNewResourceVersion(obj *v3.TemplateVersion) bool {
if !a.opts.UniqueApplyForResourceVersion {
return true
}
// Apply once per resource version
key := obj.Namespace + "/" + obj.Name
previous, ok := a.seen.Load(key)
return !ok || previous != obj.ResourceVersion
}
// storeResourceVersion keeps track of the latest resource version of an object for which Apply was executed
// Only used if UniqueApplyForResourceVersion is set in generic.GeneratingHandlerOptions
func (a *templateVersionGeneratingHandler) storeResourceVersion(obj *v3.TemplateVersion) {
if !a.opts.UniqueApplyForResourceVersion {
return
}
key := obj.Namespace + "/" + obj.Name
a.seen.Store(key, obj.ResourceVersion)
}