/
cluster_control.go
85 lines (70 loc) · 2.88 KB
/
cluster_control.go
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// Copyright 2018 Oracle and/or its affiliates. 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 cluster
import (
"fmt"
"github.com/golang/glog"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/util/retry"
v1alpha1 "github.com/oracle/mysql-operator/pkg/apis/mysql/v1alpha1"
clientset "github.com/oracle/mysql-operator/pkg/generated/clientset/versioned"
listersv1alpha1 "github.com/oracle/mysql-operator/pkg/generated/listers/mysql/v1alpha1"
)
type clusterUpdaterInterface interface {
UpdateClusterStatus(cluster *v1alpha1.Cluster, status *v1alpha1.ClusterStatus) error
UpdateClusterLabels(cluster *v1alpha1.Cluster, lbls labels.Set) error
}
type clusterUpdater struct {
client clientset.Interface
lister listersv1alpha1.ClusterLister
}
func newClusterUpdater(client clientset.Interface, lister listersv1alpha1.ClusterLister) clusterUpdaterInterface {
return &clusterUpdater{client: client, lister: lister}
}
func (csu *clusterUpdater) UpdateClusterStatus(cluster *v1alpha1.Cluster, status *v1alpha1.ClusterStatus) error {
return retry.RetryOnConflict(retry.DefaultRetry, func() error {
cluster.Status = *status
_, updateErr := csu.client.MySQLV1alpha1().Clusters(cluster.Namespace).Update(cluster)
if updateErr == nil {
return nil
}
updated, err := csu.lister.Clusters(cluster.Namespace).Get(cluster.Name)
if err != nil {
glog.Errorf("Error getting updated Cluster %s/%s: %v", cluster.Namespace, cluster.Name, err)
return err
}
// Copy the Cluster so we don't mutate the cache.
cluster = updated.DeepCopy()
return updateErr
})
}
func (csu *clusterUpdater) UpdateClusterLabels(cluster *v1alpha1.Cluster, lbls labels.Set) error {
return retry.RetryOnConflict(retry.DefaultRetry, func() error {
cluster.Labels = labels.Merge(labels.Set(cluster.Labels), lbls)
_, updateErr := csu.client.MySQLV1alpha1().Clusters(cluster.Namespace).Update(cluster)
if updateErr == nil {
return nil
}
key := fmt.Sprintf("%s/%s", cluster.GetNamespace(), cluster.GetName())
glog.V(4).Infof("Conflict updating Cluster labels. Getting updated Cluster %s from cache...", key)
updated, err := csu.lister.Clusters(cluster.Namespace).Get(cluster.Name)
if err != nil {
glog.Errorf("Error getting updated Cluster %q: %v", key, err)
return err
}
// Copy the Cluster so we don't mutate the cache.
cluster = updated.DeepCopy()
return updateErr
})
}