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| 1 | +package authprune |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "io" |
| 6 | + "io/ioutil" |
| 7 | + "time" |
| 8 | + |
| 9 | + "github.com/golang/glog" |
| 10 | + kerrors "k8s.io/apimachinery/pkg/api/errors" |
| 11 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 12 | + utilerrors "k8s.io/apimachinery/pkg/util/errors" |
| 13 | + rbacv1client "k8s.io/client-go/kubernetes/typed/rbac/v1" |
| 14 | + kapi "k8s.io/kubernetes/pkg/apis/core" |
| 15 | + "k8s.io/kubernetes/pkg/kubectl" |
| 16 | +) |
| 17 | + |
| 18 | +func NewClusterRoleReaper(roleClient rbacv1client.ClusterRolesGetter, clusterBindingClient rbacv1client.ClusterRoleBindingsGetter, bindingClient rbacv1client.RoleBindingsGetter) kubectl.Reaper { |
| 19 | + return &ClusterRoleReaper{ |
| 20 | + roleClient: roleClient, |
| 21 | + clusterBindingClient: clusterBindingClient, |
| 22 | + bindingClient: bindingClient, |
| 23 | + } |
| 24 | +} |
| 25 | + |
| 26 | +type ClusterRoleReaper struct { |
| 27 | + roleClient rbacv1client.ClusterRolesGetter |
| 28 | + clusterBindingClient rbacv1client.ClusterRoleBindingsGetter |
| 29 | + bindingClient rbacv1client.RoleBindingsGetter |
| 30 | +} |
| 31 | + |
| 32 | +// Stop on a reaper is actually used for deletion. In this case, we'll delete referencing clusterroleclusterBindings |
| 33 | +// then delete the clusterrole. |
| 34 | +func (r *ClusterRoleReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *metav1.DeleteOptions) error { |
| 35 | + err := reapForClusterRole(r.clusterBindingClient, r.bindingClient, namespace, name, ioutil.Discard) |
| 36 | + if err != nil { |
| 37 | + glog.Infof("Cannot prune for clusterrole/%s: %v", name, err) |
| 38 | + } |
| 39 | + |
| 40 | + if err := r.roleClient.ClusterRoles().Delete(name, &metav1.DeleteOptions{}); err != nil && !kerrors.IsNotFound(err) { |
| 41 | + return err |
| 42 | + } |
| 43 | + |
| 44 | + return nil |
| 45 | +} |
| 46 | + |
| 47 | +func reapForClusterRole(clusterBindingClient rbacv1client.ClusterRoleBindingsGetter, bindingClient rbacv1client.RoleBindingsGetter, namespace, name string, out io.Writer) error { |
| 48 | + errors := []error{} |
| 49 | + |
| 50 | + clusterBindings, err := clusterBindingClient.ClusterRoleBindings().List(metav1.ListOptions{}) |
| 51 | + if err != nil { |
| 52 | + return err |
| 53 | + } |
| 54 | + for _, clusterBinding := range clusterBindings.Items { |
| 55 | + if clusterBinding.RoleRef.Name == name { |
| 56 | + if err := clusterBindingClient.ClusterRoleBindings().Delete(clusterBinding.Name, &metav1.DeleteOptions{}); err != nil && !kerrors.IsNotFound(err) { |
| 57 | + errors = append(errors, err) |
| 58 | + } else { |
| 59 | + fmt.Fprintf(out, "clusterrolebinding.rbac.authorization.k8s.io/"+clusterBinding.Name+" deleted\n") |
| 60 | + } |
| 61 | + } |
| 62 | + } |
| 63 | + |
| 64 | + namespacedBindings, err := bindingClient.RoleBindings(kapi.NamespaceNone).List(metav1.ListOptions{}) |
| 65 | + if err != nil { |
| 66 | + return err |
| 67 | + } |
| 68 | + for _, namespacedBinding := range namespacedBindings.Items { |
| 69 | + if namespacedBinding.RoleRef.Kind == "ClusterRole" && namespacedBinding.RoleRef.Name == name { |
| 70 | + if err := bindingClient.RoleBindings(namespacedBinding.Namespace).Delete(namespacedBinding.Name, &metav1.DeleteOptions{}); err != nil && !kerrors.IsNotFound(err) { |
| 71 | + errors = append(errors, err) |
| 72 | + } else { |
| 73 | + fmt.Fprintf(out, "rolebinding.rbac.authorization.k8s.io/"+namespacedBinding.Name+" deleted\n") |
| 74 | + } |
| 75 | + } |
| 76 | + } |
| 77 | + |
| 78 | + return utilerrors.NewAggregate(errors) |
| 79 | +} |
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