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clusteralertgroup.go
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/
clusteralertgroup.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"
)
// ClusterAlertGroupController interface for managing ClusterAlertGroup resources.
type ClusterAlertGroupController interface {
generic.ControllerInterface[*v3.ClusterAlertGroup, *v3.ClusterAlertGroupList]
}
// ClusterAlertGroupClient interface for managing ClusterAlertGroup resources in Kubernetes.
type ClusterAlertGroupClient interface {
generic.ClientInterface[*v3.ClusterAlertGroup, *v3.ClusterAlertGroupList]
}
// ClusterAlertGroupCache interface for retrieving ClusterAlertGroup resources in memory.
type ClusterAlertGroupCache interface {
generic.CacheInterface[*v3.ClusterAlertGroup]
}
// ClusterAlertGroupStatusHandler is executed for every added or modified ClusterAlertGroup. Should return the new status to be updated
type ClusterAlertGroupStatusHandler func(obj *v3.ClusterAlertGroup, status v3.AlertStatus) (v3.AlertStatus, error)
// ClusterAlertGroupGeneratingHandler is the top-level handler that is executed for every ClusterAlertGroup event. It extends ClusterAlertGroupStatusHandler by a returning a slice of child objects to be passed to apply.Apply
type ClusterAlertGroupGeneratingHandler func(obj *v3.ClusterAlertGroup, status v3.AlertStatus) ([]runtime.Object, v3.AlertStatus, error)
// RegisterClusterAlertGroupStatusHandler configures a ClusterAlertGroupController to execute a ClusterAlertGroupStatusHandler for every events observed.
// If a non-empty condition is provided, it will be updated in the status conditions for every handler execution
func RegisterClusterAlertGroupStatusHandler(ctx context.Context, controller ClusterAlertGroupController, condition condition.Cond, name string, handler ClusterAlertGroupStatusHandler) {
statusHandler := &clusterAlertGroupStatusHandler{
client: controller,
condition: condition,
handler: handler,
}
controller.AddGenericHandler(ctx, name, generic.FromObjectHandlerToHandler(statusHandler.sync))
}
// RegisterClusterAlertGroupGeneratingHandler configures a ClusterAlertGroupController to execute a ClusterAlertGroupGeneratingHandler 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 RegisterClusterAlertGroupGeneratingHandler(ctx context.Context, controller ClusterAlertGroupController, apply apply.Apply,
condition condition.Cond, name string, handler ClusterAlertGroupGeneratingHandler, opts *generic.GeneratingHandlerOptions) {
statusHandler := &clusterAlertGroupGeneratingHandler{
ClusterAlertGroupGeneratingHandler: handler,
apply: apply,
name: name,
gvk: controller.GroupVersionKind(),
}
if opts != nil {
statusHandler.opts = *opts
}
controller.OnChange(ctx, name, statusHandler.Remove)
RegisterClusterAlertGroupStatusHandler(ctx, controller, condition, name, statusHandler.Handle)
}
type clusterAlertGroupStatusHandler struct {
client ClusterAlertGroupClient
condition condition.Cond
handler ClusterAlertGroupStatusHandler
}
// sync is executed on every resource addition or modification. Executes the configured handlers and sends the updated status to the Kubernetes API
func (a *clusterAlertGroupStatusHandler) sync(key string, obj *v3.ClusterAlertGroup) (*v3.ClusterAlertGroup, 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 clusterAlertGroupGeneratingHandler struct {
ClusterAlertGroupGeneratingHandler
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 *clusterAlertGroupGeneratingHandler) Remove(key string, obj *v3.ClusterAlertGroup) (*v3.ClusterAlertGroup, error) {
if obj != nil {
return obj, nil
}
obj = &v3.ClusterAlertGroup{}
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 ClusterAlertGroupGeneratingHandler and pass the resulting objects to apply.Apply, finally returning the new status of the resource
func (a *clusterAlertGroupGeneratingHandler) Handle(obj *v3.ClusterAlertGroup, status v3.AlertStatus) (v3.AlertStatus, error) {
if !obj.DeletionTimestamp.IsZero() {
return status, nil
}
objs, newStatus, err := a.ClusterAlertGroupGeneratingHandler(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 *clusterAlertGroupGeneratingHandler) isNewResourceVersion(obj *v3.ClusterAlertGroup) 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 *clusterAlertGroupGeneratingHandler) storeResourceVersion(obj *v3.ClusterAlertGroup) {
if !a.opts.UniqueApplyForResourceVersion {
return
}
key := obj.Namespace + "/" + obj.Name
a.seen.Store(key, obj.ResourceVersion)
}