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localvolumeexpand_controller.go
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localvolumeexpand_controller.go
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package localvolumeexpand
import (
"context"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
apis "github.com/hwameistor/hwameistor/pkg/apis/hwameistor"
apisv1alpha1 "github.com/hwameistor/hwameistor/pkg/apis/hwameistor/v1alpha1"
"github.com/hwameistor/hwameistor/pkg/local-storage/member"
)
/**
* USER ACTION REQUIRED: This is a scaffold file intended for the user to modify with their own Controller
* business logic. Delete these comments after modifying this file.*
*/
// Add creates a new LocalVolumeExpand Controller and adds it to the Manager. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
return add(mgr, newReconciler(mgr))
}
// newReconciler returns a new reconcile.Reconciler
func newReconciler(mgr manager.Manager) reconcile.Reconciler {
return &ReconcileLocalVolumeExpand{
client: mgr.GetClient(),
scheme: mgr.GetScheme(),
// storageMember is a global variable
storageMember: member.Member(),
}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, r reconcile.Reconciler) error {
// Create a new controller
c, err := controller.New("localvolumeexpand-controller", mgr, controller.Options{Reconciler: r})
if err != nil {
return err
}
// Watch for changes to primary resource LocalVolumeExpand
err = c.Watch(&source.Kind{Type: &apisv1alpha1.LocalVolumeExpand{}}, &handler.EnqueueRequestForObject{})
if err != nil {
return err
}
return nil
}
// blank assignment to verify that ReconcileLocalVolumeExpand implements reconcile.Reconciler
var _ reconcile.Reconciler = &ReconcileLocalVolumeExpand{}
// ReconcileLocalVolumeExpand reconciles a LocalVolumeExpand object
type ReconcileLocalVolumeExpand struct {
// This client, initialized using mgr.Client() above, is a split client
// that reads objects from the cache and writes to the apiserver
client client.Client
scheme *runtime.Scheme
storageMember apis.LocalStorageMember
}
// Reconcile reads that state of the cluster for a LocalVolumeExpand object and makes changes based on the state read
// and what is in the LocalVolumeExpand.Spec
// Note:
// The Controller will requeue the Request to be processed again if the returned error is non-nil or
// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
func (r *ReconcileLocalVolumeExpand) Reconcile(_ context.Context, request reconcile.Request) (reconcile.Result, error) {
// Fetch the LocalVolumeExpand instance
instance := &apisv1alpha1.LocalVolumeExpand{}
err := r.client.Get(context.TODO(), request.NamespacedName, instance)
if err != nil {
if errors.IsNotFound(err) {
// Request object not found, could have been deleted after reconcile request.
// Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
// Return and don't requeue
return reconcile.Result{}, nil
}
// Error reading the object - requeue the request.
return reconcile.Result{}, err
}
r.storageMember.Controller().ReconcileVolumeExpand(instance)
return reconcile.Result{}, nil
}