forked from rook/rook
Sébastien Han
a3068dee0b
Now, the CephBlockPool CRD is managed with the controller-runtime. So the watcher is outside of the main controller reconciliation loop of CephCluster which brings numerous benefit such as: * having its own reconciliation loop * won't block anything from the main CephCluster controller loop * fast than waiting for CephCluster loop to completion Partially close: https://github.com/rook/rook/issues/1981 Signed-off-by: Sébastien Han <seb@redhat.com>
103 lines
3.6 KiB
Go
103 lines
3.6 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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"strings"
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"time"
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cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
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"github.com/rook/rook/pkg/clusterd"
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cephclient "github.com/rook/rook/pkg/daemon/ceph/client"
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"github.com/rook/rook/pkg/operator/k8sutil"
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kerrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/types"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/reconcile"
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)
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var (
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// ImmediateRetryResult Return this for a immediate retry of the reconciliation loop with the same request object.
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ImmediateRetryResult = reconcile.Result{Requeue: true}
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// WaitForRequeueIfCephClusterNotReadyAfter requeue after 10sec if the operator is not ready
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WaitForRequeueIfCephClusterNotReadyAfter = 10 * time.Second
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// WaitForRequeueIfCephClusterNotReady waits for the CephCluster to be ready
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WaitForRequeueIfCephClusterNotReady = reconcile.Result{Requeue: true, RequeueAfter: WaitForRequeueIfCephClusterNotReadyAfter}
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)
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// IsReadyToReconcile determines if a controller is ready to reconcile or not
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func IsReadyToReconcile(client client.Client, clustercontext *clusterd.Context, namespacedName types.NamespacedName) (cephv1.ClusterSpec, bool, reconcile.Result) {
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namespacedName.Name = namespacedName.Namespace
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// Running ceph commands won't work and the controller will keep re-queuing so I believe it's fine not to check
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// Make sure a CephCluster exists before doing anything
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cephCluster := &cephv1.CephCluster{}
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err := client.Get(context.TODO(), namespacedName, cephCluster)
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if err != nil {
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if kerrors.IsNotFound(err) {
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logger.Errorf("CephCluster resource %q not found in namespace %q", namespacedName.Name, namespacedName.Namespace)
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return cephv1.ClusterSpec{}, false, ImmediateRetryResult
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} else if err != nil {
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logger.Errorf("failed to fetch CephCluster %v", err)
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return cephv1.ClusterSpec{}, false, ImmediateRetryResult
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}
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}
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// If the cluster is ready
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// Not using k8sutil.ReadyStatus to avoid import cycles
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if cephCluster.Status.Phase == k8sutil.ReadyStatus {
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// Test a Ceph command to verify the Operator is ready
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// This is done to silence errors when the operator just started and cannot reconcile yet
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_, err = cephclient.Status(clustercontext, namespacedName.Namespace, true)
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if err != nil {
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if strings.Contains(err.Error(), "error calling conf_read_file") {
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logger.Info("operator is not ready to run ceph command, cannot reconcile yet.")
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return cephCluster.Spec, false, WaitForRequeueIfCephClusterNotReady
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}
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// We should not arrive there
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logger.Errorf("ceph command error %v", err)
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return cephCluster.Spec, false, ImmediateRetryResult
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}
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return cephCluster.Spec, true, reconcile.Result{}
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}
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return cephCluster.Spec, false, ImmediateRetryResult
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}
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// Contains checks if an item exists in a given list.
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func Contains(list []string, s string) bool {
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for _, v := range list {
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if v == s {
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return true
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}
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}
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return false
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}
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// Removes any element from a list
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func Remove(list []string, s string) []string {
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for i, v := range list {
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if v == s {
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list = append(list[:i], list[i+1:]...)
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}
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}
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return list
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}
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