forked from rook/rook
Sébastien Han
b89730d895
This commit is a large refactor on how the operator starts, stops and how it starts various sub-components such as the ceph-csi driver. It also refines the way we cancel orchestrations. We don't use breakpoints anymore but send our self a SIGUP to reload our controller runtime manager. The reload will happen under different circonstances like: * a new adminission controller secret is created/deleted/changed * a CephCluster CR is edited As mentioned earlier, the csi driver now has its own controller, just like flex. It reacts to change in the operator config map for particular ROOK_CSI_ fields. A second new controller for the operator's general config has been created, it manages: * the logging level * the ceph CLI command timeout * the discovery daemon The operator reacts much more rapidly to cancellation events by stopping the manager's context and reloading it. Signed-off-by: Sébastien Han <seb@redhat.com>
94 lines
3.1 KiB
Go
94 lines
3.1 KiB
Go
/*
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Copyright 2021 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 csi
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import (
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"regexp"
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"github.com/google/go-cmp/cmp"
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cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
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opcontroller "github.com/rook/rook/pkg/operator/ceph/controller"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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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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// predicateController is the predicate function to trigger reconcile on operator configuration cm change
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func predicateController() predicate.Funcs {
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return predicate.Funcs{
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CreateFunc: func(e event.CreateEvent) bool {
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// if the operator configuration file is created we want to reconcile
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if cm, ok := e.Object.(*v1.ConfigMap); ok {
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// We don't want to use cm.Generation here, it case the operator was stopped and the
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// ConfigMap was created
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return cm.Name == opcontroller.OperatorSettingConfigMapName
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}
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// If a Ceph Cluster is created we want to reconcile the csi driver
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if cephCluster, ok := e.Object.(*cephv1.CephCluster); ok {
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// This allows us to avoid a double reconcile of the CSI controller if this is not
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// the first generation of the CephCluster. So only return true if this is the very
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// first instance of the CephCluster
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// Corner case is when the cluster is created but the operator is down AND the cm
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// does not exist... However, these days the operator config map is part of the
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// operator.yaml so it's probably acceptable?
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return cephCluster.Generation == 1
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}
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return false
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},
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UpdateFunc: func(e event.UpdateEvent) bool {
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resourceQtyComparer := cmp.Comparer(func(x, y resource.Quantity) bool { return x.Cmp(y) == 0 })
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if old, ok := e.ObjectOld.(*v1.ConfigMap); ok {
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if new, ok := e.ObjectNew.(*v1.ConfigMap); ok {
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if old.Name == opcontroller.OperatorSettingConfigMapName && new.Name == opcontroller.OperatorSettingConfigMapName {
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diff := cmp.Diff(old.Data, new.Data, resourceQtyComparer)
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logger.Debugf("operator configmap diff:\n %s", diff)
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return findCSIChange(diff)
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}
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}
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}
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return false
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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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func findCSIChange(str string) bool {
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var re = regexp.MustCompile(`(?m)^(\+|-).*(\"ROOK_CSI_|\"CSI_).*,$`)
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found := re.FindAllString(str, -1)
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if len(found) > 0 {
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for _, match := range found {
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// logger.Debugf("ceph csi config changed with: %q", match)
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logger.Infof("ceph csi config changed with: %q", match)
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}
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return true
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}
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return false
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}
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