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>
103 lines
3.1 KiB
Go
103 lines
3.1 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 cluster to manage a Ceph cluster.
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package cluster
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import (
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"github.com/rook/rook/pkg/clusterd"
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discoverDaemon "github.com/rook/rook/pkg/daemon/discover"
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"github.com/rook/rook/pkg/operator/k8sutil"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/event"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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)
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// predicateForNodeWatcher is the predicate function to trigger reconcile on Node events
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func predicateForNodeWatcher(client client.Client, context *clusterd.Context) predicate.Funcs {
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return predicate.Funcs{
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CreateFunc: func(e event.CreateEvent) bool {
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clientCluster := newClientCluster(client, e.Meta.GetNamespace(), context)
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return clientCluster.onK8sNode(e.Object)
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},
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UpdateFunc: func(e event.UpdateEvent) bool {
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clientCluster := newClientCluster(client, e.MetaNew.GetNamespace(), context)
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return clientCluster.onK8sNode(e.ObjectNew)
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},
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DeleteFunc: func(e event.DeleteEvent) bool {
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return false
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},
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GenericFunc: func(e event.GenericEvent) bool {
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return false
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},
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}
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}
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// predicateForHotPlugCMWatcher is the predicate function to trigger reconcile on ConfigMap events (hot-plug)
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func predicateForHotPlugCMWatcher(client client.Client) predicate.Funcs {
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return predicate.Funcs{
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UpdateFunc: func(e event.UpdateEvent) bool {
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isHotPlugCM := isHotPlugCM(e.ObjectNew)
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if !isHotPlugCM {
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logger.Debugf("hot-plug cm watcher: only reconcile on hot plug cm changes, this %q cm is handled by another watcher", e.MetaNew.GetName())
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return false
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}
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clientCluster := newClientCluster(client, e.MetaNew.GetNamespace(), &clusterd.Context{})
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return clientCluster.onDeviceCMUpdate(e.ObjectOld, e.ObjectNew)
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},
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DeleteFunc: func(e event.DeleteEvent) bool {
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// TODO: if the configmap goes away we could retrigger rook-discover DS
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// However at this point the returned bool can only trigger a reconcile of the CephCluster object
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// Definitely non-trivial but nice to have in the future
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return false
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},
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CreateFunc: func(e event.CreateEvent) bool {
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return false
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},
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GenericFunc: func(e event.GenericEvent) bool {
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return false
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},
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}
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}
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// isHotPlugCM informs whether the object is the cm for hot-plug disk
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func isHotPlugCM(obj runtime.Object) bool {
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// If not a ConfigMap, let's not reconcile
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cm, ok := obj.(*corev1.ConfigMap)
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if !ok {
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return false
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}
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// Get the labels
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labels := cm.GetLabels()
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labelVal, labelKeyExist := labels[k8sutil.AppAttr]
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if labelKeyExist && labelVal == discoverDaemon.AppName {
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return true
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}
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return false
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}
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