/
vmm_controller.go
145 lines (125 loc) · 4.66 KB
/
vmm_controller.go
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package controller
import (
"context"
"fmt"
"reflect"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/record"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
virtv1alpha1 "github.com/smartxworks/virtink/pkg/apis/virt/v1alpha1"
)
type VMMReconciler struct {
client.Client
Scheme *runtime.Scheme
Recorder record.EventRecorder
}
// +kubebuilder:rbac:groups=virt.virtink.smartx.com,resources=virtualmachinemigrations,verbs=get;list;watch
// +kubebuilder:rbac:groups=virt.virtink.smartx.com,resources=virtualmachinemigrations/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=virt.virtink.smartx.com,resources=virtualmachines,verbs=get;list;watch
// +kubebuilder:rbac:groups=virt.virtink.smartx.com,resources=virtualmachines/status,verbs=get;update;patch
// +kubebuilder:rbac:groups="",resources=events,verbs=create;update;patch
func (r *VMMReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
var vmm virtv1alpha1.VirtualMachineMigration
if err := r.Get(ctx, req.NamespacedName, &vmm); err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
status := vmm.Status.DeepCopy()
if err := r.reconcile(ctx, &vmm); err != nil {
r.Recorder.Eventf(&vmm, corev1.EventTypeWarning, "FailedReconcile", "Failed to reconcile VMM: %s", err)
return ctrl.Result{}, err
}
if !reflect.DeepEqual(vmm.Status, status) {
if err := r.Status().Update(ctx, &vmm); err != nil {
if apierrors.IsConflict(err) {
return ctrl.Result{Requeue: true}, nil
}
return ctrl.Result{}, fmt.Errorf("update VMM status: %s", err)
}
}
return ctrl.Result{}, nil
}
func (r *VMMReconciler) reconcile(ctx context.Context, vmm *virtv1alpha1.VirtualMachineMigration) error {
if vmm.DeletionTimestamp != nil && !vmm.DeletionTimestamp.IsZero() {
return nil
}
var vm virtv1alpha1.VirtualMachine
vmKey := client.ObjectKey{
Name: vmm.Spec.VMName,
Namespace: vmm.Namespace,
}
vmNotFound := false
if err := r.Client.Get(ctx, vmKey, &vm); err != nil {
if apierrors.IsNotFound(err) {
vmNotFound = true
} else {
return fmt.Errorf("get vm: %s", err)
}
}
if vmm.Status.Phase == virtv1alpha1.VirtualMachineMigrationSucceeded ||
vmm.Status.Phase == virtv1alpha1.VirtualMachineMigrationFailed {
if vmNotFound || !vm.DeletionTimestamp.IsZero() || vm.Status.Migration == nil || vm.Status.Migration.UID != vmm.UID {
return nil
}
vm.Status.Migration = nil
if err := r.Client.Status().Update(ctx, &vm); err != nil {
return fmt.Errorf("reset vm migration status: %s", err)
}
return nil
}
if vmNotFound || !vm.DeletionTimestamp.IsZero() || (vm.Status.Migration != nil && vm.Status.Migration.UID != vmm.UID) {
vmm.Status.Phase = virtv1alpha1.VirtualMachineMigrationFailed
return nil
}
if vm.Status.Migration == nil {
vm.Status.Migration = &virtv1alpha1.VirtualMachineStatusMigration{
UID: vmm.UID,
}
if err := r.Client.Status().Update(ctx, &vm); err != nil {
return fmt.Errorf("set VM migration status: %s", err)
}
vmm.Status.SourceNodeName = vm.Status.NodeName
return nil
}
vmm.Status.Phase = vm.Status.Migration.Phase
if vm.Status.Migration.TargetNodeName != "" {
vmm.Status.TargetNodeName = vm.Status.Migration.TargetNodeName
}
return nil
}
func (r *VMMReconciler) SetupWithManager(mgr ctrl.Manager) error {
if err := mgr.GetFieldIndexer().IndexField(context.Background(), &virtv1alpha1.VirtualMachineMigration{}, ".metadata.uid", func(obj client.Object) []string {
vmm := obj.(*virtv1alpha1.VirtualMachineMigration)
return []string{string(vmm.UID)}
}); err != nil {
return fmt.Errorf("index VMM by UID: %s", err)
}
return ctrl.NewControllerManagedBy(mgr).
For(&virtv1alpha1.VirtualMachineMigration{}).
Watches(&virtv1alpha1.VirtualMachine{}, handler.EnqueueRequestsFromMapFunc(func(ctx context.Context, obj client.Object) []reconcile.Request {
vm := obj.(*virtv1alpha1.VirtualMachine)
if vm.Status.Migration == nil || vm.Status.Migration.UID == "" {
return nil
}
var vmmList virtv1alpha1.VirtualMachineMigrationList
if err := r.Client.List(context.Background(), &vmmList, client.MatchingFields{".metadata.uid": string(vm.Status.Migration.UID)}); err != nil {
return nil
}
var requests []reconcile.Request
for _, vmm := range vmmList.Items {
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Namespace: vmm.Namespace,
Name: vmm.Name,
},
})
}
return requests
})).
Complete(r)
}