ceph: convert the CephCluster controller to the controller-runtime

This is the final conversion to controller-runtime conversion. This time the CephCluster CRD has been converted to use the controller-runtime library. The controller incorporates all the previous watchers too, so the Node and hot-plug configmap are been watched too. Only the operator setting configmap is not being watcher since it's not related to the CephCluster CRD. Not only the patch converts to controller-runtime but also tries to re-organize the tree of the repo to actually make the code more readable and have better functions/methods/tests separations. Closes: https://github.com/rook/rook/issues/4939 Signed-off-by: Sébastien Han <seb@redhat.com>
2020-04-28 09:40:35 +02:00
parent 008670bc79
commit f27fd207ce
55 changed files with 2635 additions and 1848 deletions
@@ -0,0 +1,66 @@
+/*
+Copyright 2020 The Rook Authors. All rights reserved.
+
+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 controller
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+)
+
+// ObjectToCRMapper returns the list of a given object type metadata
+// It is used to trigger a reconcile object Kind A when watching object Kind B
+// So we reconcile Kind A instead of Kind B
+// For instance, we watch for CephCluster CR changes but want to reconcile CephFilesystem based on a Spec change
+func ObjectToCRMapper(c client.Client, ro runtime.Object, scheme *runtime.Scheme) (handler.Mapper, error) {
+	if _, ok := ro.(metav1.ListInterface); !ok {
+		return nil, errors.Errorf("expected a metav1.ListInterface, got %T instead", ro)
+	}
+
+	gvk, err := apiutil.GVKForObject(ro, scheme)
+	if err != nil {
+		return nil, err
+	}
+
+	return handler.ToRequestsFunc(func(o handler.MapObject) []ctrl.Request {
+		list := &unstructured.UnstructuredList{}
+		list.SetGroupVersionKind(gvk)
+		err := c.List(context.TODO(), list)
+		if err != nil {
+			return nil
+		}
+
+		results := []ctrl.Request{}
+		for _, obj := range list.Items {
+			results = append(results, ctrl.Request{
+				NamespacedName: client.ObjectKey{
+					Namespace: obj.GetNamespace(),
+					Name:      obj.GetName(),
+				},
+			})
+		}
+		return results
+
+	}), nil
+}