forked from rook/rook
Sébastien Han
f27fd207ce
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>
67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
/*
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Copyright 2020 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controller
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import (
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"context"
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"github.com/pkg/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
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"sigs.k8s.io/controller-runtime/pkg/handler"
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)
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// ObjectToCRMapper returns the list of a given object type metadata
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// It is used to trigger a reconcile object Kind A when watching object Kind B
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// So we reconcile Kind A instead of Kind B
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// For instance, we watch for CephCluster CR changes but want to reconcile CephFilesystem based on a Spec change
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func ObjectToCRMapper(c client.Client, ro runtime.Object, scheme *runtime.Scheme) (handler.Mapper, error) {
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if _, ok := ro.(metav1.ListInterface); !ok {
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return nil, errors.Errorf("expected a metav1.ListInterface, got %T instead", ro)
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}
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gvk, err := apiutil.GVKForObject(ro, scheme)
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if err != nil {
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return nil, err
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}
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return handler.ToRequestsFunc(func(o handler.MapObject) []ctrl.Request {
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list := &unstructured.UnstructuredList{}
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list.SetGroupVersionKind(gvk)
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err := c.List(context.TODO(), list)
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if err != nil {
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return nil
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}
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results := []ctrl.Request{}
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for _, obj := range list.Items {
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results = append(results, ctrl.Request{
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NamespacedName: client.ObjectKey{
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Namespace: obj.GetNamespace(),
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Name: obj.GetName(),
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},
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})
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}
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return results
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}), nil
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}
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