🌱 Replicating SyncTarget-related rbac and logicalclusters objects

pkg/reconciler/workload/replicateclusterrole/replicateclusterrole_controller.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2023 The KCP Authors.
+
+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.
+*/
+
+package replicateclusterrole
+
+import (
+	kcprbacinformers "github.com/kcp-dev/client-go/informers/rbac/v1"
+	kcpkubernetesclientset "github.com/kcp-dev/client-go/kubernetes"
+	"github.com/kcp-dev/logicalcluster/v3"
+
+	rbacv1 "k8s.io/api/rbac/v1"
+	"k8s.io/kube-openapi/pkg/util/sets"
+
+	"github.com/kcp-dev/kcp/pkg/reconciler/cache/labelclusterroles"
+	"github.com/kcp-dev/kcp/sdk/apis/workload"
+)
+
+const (
+	ControllerName = "kcp-workloads-replicate-clusterrole"
+)
+
+// NewController returns a new controller for labelling ClusterRole that should be replicated.
+func NewController(
+	kubeClusterClient kcpkubernetesclientset.ClusterInterface,
+	clusterRoleInformer kcprbacinformers.ClusterRoleClusterInformer,
+	clusterRoleBindingInformer kcprbacinformers.ClusterRoleBindingClusterInformer,
+) labelclusterroles.Controller {
+	return labelclusterroles.NewController(
+		ControllerName,
+		workload.GroupName,
+		HasSyncRule,
+		func(clusterName logicalcluster.Name, crb *rbacv1.ClusterRoleBinding) bool { return false },
+		kubeClusterClient,
+		clusterRoleInformer,
+		clusterRoleBindingInformer,
+	)
+}
+
+func HasSyncRule(clusterName logicalcluster.Name, cr *rbacv1.ClusterRole) bool {
+	for _, rule := range cr.Rules {
+		apiGroups := sets.NewString(rule.APIGroups...)
+		if !apiGroups.Has(workload.GroupName) && !apiGroups.Has("*") {
+			continue
+		}
+		resources := sets.NewString(rule.Resources...)
+		verbs := sets.NewString(rule.Verbs...)
+		if (resources.Has("synctargets") || resources.Has("*")) && (verbs.Has("sync") || verbs.Has("*")) {
+			return true
+		}
+	}
+	return false
+}

pkg/reconciler/workload/replicateclusterrolebinding/replicateclusterrolebinding_controller.go

@@ -0,0 +1,50 @@
+/*
+Copyright 2023 The KCP Authors.
+
+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.
+*/
+
+package replicateclusterrolebinding
+
+import (
+	kcprbacinformers "github.com/kcp-dev/client-go/informers/rbac/v1"
+	kcpkubernetesclientset "github.com/kcp-dev/client-go/kubernetes"
+	"github.com/kcp-dev/logicalcluster/v3"
+
+	rbacv1 "k8s.io/api/rbac/v1"
+
+	"github.com/kcp-dev/kcp/pkg/reconciler/cache/labelclusterrolebindings"
+	"github.com/kcp-dev/kcp/pkg/reconciler/workload/replicateclusterrole"
+	"github.com/kcp-dev/kcp/sdk/apis/workload"
+)
+
+const (
+	ControllerName = "kcp-workloads-replicate-clusterrolebinding"
+)
+
+// NewController returns a new controller for labelling ClusterRoleBinding that should be replicated.
+func NewController(
+	kubeClusterClient kcpkubernetesclientset.ClusterInterface,
+	clusterRoleBindingInformer kcprbacinformers.ClusterRoleBindingClusterInformer,
+	clusterRoleInformer kcprbacinformers.ClusterRoleClusterInformer,
+) labelclusterrolebindings.Controller {
+	return labelclusterrolebindings.NewController(
+		ControllerName,
+		workload.GroupName,
+		replicateclusterrole.HasSyncRule,
+		func(clusterName logicalcluster.Name, crb *rbacv1.ClusterRoleBinding) bool { return false },
+		kubeClusterClient,
+		clusterRoleBindingInformer,
+		clusterRoleInformer,
+	)
+}

pkg/reconciler/workload/replicatelogicalcluster/replicatelogicalcluster_controller.go

@@ -0,0 +1,105 @@
+/*
+Copyright 2023 The KCP Authors.
+
+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.
+*/
+
+package replicatelogicalcluster
+
+import (
+	"fmt"
+
+	kcpcache "github.com/kcp-dev/apimachinery/v2/pkg/cache"
+	"github.com/kcp-dev/logicalcluster/v3"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/client-go/tools/cache"
+
+	"github.com/kcp-dev/kcp/pkg/reconciler/cache/labellogicalcluster"
+	"github.com/kcp-dev/kcp/pkg/reconciler/cache/replication"
+	corev1alpha1 "github.com/kcp-dev/kcp/sdk/apis/core/v1alpha1"
+	"github.com/kcp-dev/kcp/sdk/apis/workload"
+	workloadv1alpha1 "github.com/kcp-dev/kcp/sdk/apis/workload/v1alpha1"
+	kcpclientset "github.com/kcp-dev/kcp/sdk/client/clientset/versioned/cluster"
+	corev1alpha1informers "github.com/kcp-dev/kcp/sdk/client/informers/externalversions/core/v1alpha1"
+	workloadv1alpha1informers "github.com/kcp-dev/kcp/sdk/client/informers/externalversions/workload/v1alpha1"
+)
+
+const (
+	ControllerName = "kcp-workload-replicate-logicalcluster"
+)
+
+// NewController returns a new controller for labelling LogicalClusters that should be replicated.
+
+func NewController(
+	kcpClusterClient kcpclientset.ClusterInterface,
+	logicalClusterInformer corev1alpha1informers.LogicalClusterClusterInformer,
+	syncTargetInformer workloadv1alpha1informers.SyncTargetClusterInformer,
+) labellogicalcluster.Controller {
+	logicalClusterLister := logicalClusterInformer.Lister()
+	syncTargetIndexer := syncTargetInformer.Informer().GetIndexer()
+
+	c := labellogicalcluster.NewController(
+		ControllerName,
+		workload.GroupName,
+		func(cluster *corev1alpha1.LogicalCluster) bool {
+			// If there are any SyncTargets for this logical cluster, then the LogicalCluster object should be replicated.
+			keys, err := syncTargetIndexer.IndexKeys(kcpcache.ClusterIndexName, kcpcache.ClusterIndexKey(logicalcluster.From(cluster)))
+			if err != nil {
+				runtime.HandleError(fmt.Errorf("failed to list SyncTargets: %v", err))
+				return false
+			}
+			return len(keys) > 0
+		},
+		kcpClusterClient,
+		logicalClusterInformer,
+	)
+
+	// enqueue the logical cluster every time the APIExport changes
+	enqueueSyncTarget := func(obj interface{}) {
+		if tombstone, ok := obj.(cache.DeletedFinalStateUnknown); ok {
+			obj = tombstone.Obj
+		}
+
+		syncTarget, ok := obj.(*workloadv1alpha1.SyncTarget)
+		if !ok {
+			runtime.HandleError(fmt.Errorf("unexpected object type: %T", obj))
+			return
+		}
+
+		cluster, err := logicalClusterLister.Cluster(logicalcluster.From(syncTarget)).Get(corev1alpha1.LogicalClusterName)
+		if err != nil && !apierrors.IsNotFound(err) {
+			runtime.HandleError(fmt.Errorf("failed to get logical cluster: %v", err))
+			return
+		} else if apierrors.IsNotFound(err) {
+			return
+		}
+
+		c.EnqueueLogicalCluster(cluster, "reason", "SyncTarget changed", "synctarget", syncTarget.Name)
+	}
+
+	syncTargetInformer.Informer().AddEventHandler(cache.FilteringResourceEventHandler{
+		FilterFunc: replication.IsNoSystemClusterName,
+		Handler: cache.ResourceEventHandlerFuncs{
+			AddFunc: func(obj interface{}) {
+				enqueueSyncTarget(obj)
+			},
+			DeleteFunc: func(obj interface{}) {
+				enqueueSyncTarget(obj)
+			},
+		},
+	})
+
+	return c
+}