|
| 1 | +package controllers |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "time" |
| 6 | + |
| 7 | + "github.com/go-logr/logr" |
| 8 | + "github.com/pkg/errors" |
| 9 | + apierrors "k8s.io/apimachinery/pkg/api/errors" |
| 10 | + "k8s.io/apimachinery/pkg/runtime" |
| 11 | + clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1" |
| 12 | + "sigs.k8s.io/cluster-api/util" |
| 13 | + "sigs.k8s.io/cluster-api/util/annotations" |
| 14 | + "sigs.k8s.io/cluster-api/util/conditions" |
| 15 | + "sigs.k8s.io/cluster-api/util/patch" |
| 16 | + ctrl "sigs.k8s.io/controller-runtime" |
| 17 | + "sigs.k8s.io/controller-runtime/pkg/client" |
| 18 | + |
| 19 | + k3s "github.com/k3s-io/cluster-api-k3s/pkg/k3s" |
| 20 | +) |
| 21 | + |
| 22 | +// KThreesControlPlaneReconciler reconciles a KThreesControlPlane object. |
| 23 | +type MachineReconciler struct { |
| 24 | + client.Client |
| 25 | + Log logr.Logger |
| 26 | + Scheme *runtime.Scheme |
| 27 | + |
| 28 | + EtcdDialTimeout time.Duration |
| 29 | + EtcdCallTimeout time.Duration |
| 30 | + |
| 31 | + managementCluster k3s.ManagementCluster |
| 32 | + managementClusterUncached k3s.ManagementCluster |
| 33 | +} |
| 34 | + |
| 35 | +func (r *MachineReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager, log *logr.Logger) error { |
| 36 | + _, err := ctrl.NewControllerManagedBy(mgr). |
| 37 | + For(&clusterv1.Machine{}). |
| 38 | + Build(r) |
| 39 | + |
| 40 | + if r.managementCluster == nil { |
| 41 | + r.managementCluster = &k3s.Management{ |
| 42 | + Client: r.Client, |
| 43 | + EtcdDialTimeout: r.EtcdDialTimeout, |
| 44 | + EtcdCallTimeout: r.EtcdCallTimeout, |
| 45 | + } |
| 46 | + } |
| 47 | + |
| 48 | + if r.managementClusterUncached == nil { |
| 49 | + r.managementClusterUncached = &k3s.Management{ |
| 50 | + Client: mgr.GetAPIReader(), |
| 51 | + EtcdDialTimeout: r.EtcdDialTimeout, |
| 52 | + EtcdCallTimeout: r.EtcdCallTimeout, |
| 53 | + } |
| 54 | + } |
| 55 | + |
| 56 | + return err |
| 57 | +} |
| 58 | + |
| 59 | +// +kubebuilder:rbac:groups=cluster.x-k8s.io,resources=clusters;clusters/status,verbs=get;list;watch |
| 60 | +// +kubebuilder:rbac:groups=cluster.x-k8s.io,resources=machines;machines/status,verbs=get;list;watch;create;update;patch;delete |
| 61 | +func (r *MachineReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { |
| 62 | + logger := r.Log.WithValues("namespace", req.Namespace, "machine", req.Name) |
| 63 | + |
| 64 | + m := &clusterv1.Machine{} |
| 65 | + if err := r.Client.Get(ctx, req.NamespacedName, m); err != nil { |
| 66 | + if apierrors.IsNotFound(err) { |
| 67 | + // Object not found, return. Created objects are automatically garbage collected. |
| 68 | + // For additional cleanup logic use finalizers. |
| 69 | + return ctrl.Result{}, nil |
| 70 | + } |
| 71 | + |
| 72 | + // Error reading the object - requeue the request. |
| 73 | + return ctrl.Result{}, err |
| 74 | + } |
| 75 | + |
| 76 | + if m.DeletionTimestamp.IsZero() { |
| 77 | + return ctrl.Result{}, nil |
| 78 | + } |
| 79 | + |
| 80 | + // if machine registered PreTerminate hook, wait for capi to drain and deattach volume, then remove etcd member |
| 81 | + if annotations.HasWithPrefix(clusterv1.PreTerminateDeleteHookAnnotationPrefix, m.ObjectMeta.Annotations) && |
| 82 | + m.ObjectMeta.Annotations[clusterv1.PreTerminateDeleteHookAnnotationPrefix] == k3sHookName { |
| 83 | + if !conditions.IsTrue(m, clusterv1.DrainingSucceededCondition) || !conditions.IsTrue(m, clusterv1.VolumeDetachSucceededCondition) { |
| 84 | + logger.Info("wait for machine drain and detech volume operation complete.") |
| 85 | + return ctrl.Result{}, nil |
| 86 | + } |
| 87 | + |
| 88 | + cluster, err := util.GetClusterFromMetadata(ctx, r.Client, m.ObjectMeta) |
| 89 | + if err != nil { |
| 90 | + logger.Info("unable to get cluster.") |
| 91 | + return ctrl.Result{}, errors.Wrapf(err, "unable to get cluster") |
| 92 | + } |
| 93 | + |
| 94 | + workloadCluster, err := r.managementCluster.GetWorkloadCluster(ctx, util.ObjectKey(cluster)) |
| 95 | + if err != nil { |
| 96 | + logger.Error(err, "failed to create client to workload cluster") |
| 97 | + return ctrl.Result{}, errors.Wrapf(err, "failed to create client to workload cluster") |
| 98 | + } |
| 99 | + |
| 100 | + etcdRemoved, err := workloadCluster.RemoveEtcdMemberForMachine(ctx, m) |
| 101 | + if err != nil { |
| 102 | + logger.Error(err, "failed to remove etcd member for machine") |
| 103 | + return ctrl.Result{}, err |
| 104 | + } |
| 105 | + if !etcdRemoved { |
| 106 | + logger.Info("wait k3s embedded etcd controller to remove etcd") |
| 107 | + return ctrl.Result{Requeue: true}, err |
| 108 | + } |
| 109 | + logger.Info("etcd remove etcd member succeeded", "node", m.Status.NodeRef.Name) |
| 110 | + |
| 111 | + patchHelper, err := patch.NewHelper(m, r.Client) |
| 112 | + if err != nil { |
| 113 | + return ctrl.Result{}, errors.Wrapf(err, "failed to create patch helper for machine") |
| 114 | + } |
| 115 | + |
| 116 | + mAnnotations := m.GetAnnotations() |
| 117 | + delete(mAnnotations, clusterv1.PreTerminateDeleteHookAnnotationPrefix) |
| 118 | + m.SetAnnotations(mAnnotations) |
| 119 | + if err := patchHelper.Patch(ctx, m); err != nil { |
| 120 | + return ctrl.Result{}, errors.Wrapf(err, "failed patch machine") |
| 121 | + } |
| 122 | + } |
| 123 | + |
| 124 | + return ctrl.Result{}, nil |
| 125 | +} |
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