/
statefulset_control.go
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/
statefulset_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"
apps "k8s.io/api/apps/v1beta1"
kubernetes "k8s.io/client-go/kubernetes"
appslistersv1beta1 "k8s.io/client-go/listers/apps/v1beta1"
"github.com/oracle/mysql-operator/pkg/constants"
"github.com/oracle/mysql-operator/pkg/controllers/util"
"github.com/oracle/mysql-operator/pkg/resources/statefulsets"
)
// StatefulSetControlInterface defines the interface that the
// ClusterController uses to create and update StatefulSets. It
// is implemented as an interface to enable testing.
type StatefulSetControlInterface interface {
CreateStatefulSet(ss *apps.StatefulSet) error
Patch(old *apps.StatefulSet, new *apps.StatefulSet) error
}
type realStatefulSetControl struct {
client kubernetes.Interface
statefulSetLister appslistersv1beta1.StatefulSetLister
}
// NewRealStatefulSetControl creates a concrete implementation of the
// StatefulSetControlInterface.
func NewRealStatefulSetControl(client kubernetes.Interface, statefulSetLister appslistersv1beta1.StatefulSetLister) StatefulSetControlInterface {
return &realStatefulSetControl{client: client, statefulSetLister: statefulSetLister}
}
func (rssc *realStatefulSetControl) CreateStatefulSet(ss *apps.StatefulSet) error {
_, err := rssc.client.AppsV1beta1().StatefulSets(ss.Namespace).Create(ss)
return err
}
func (rssc *realStatefulSetControl) Patch(old *apps.StatefulSet, new *apps.StatefulSet) error {
_, err := util.PatchStatefulSet(rssc.client, old, new)
return err
}
// updateStatefulSetToOperatorVersion sets the specified MySQLOperator version on:
// 1. The StatefulSet operator version label.
// 2. The MySQLAgent container image version
func updateStatefulSetToOperatorVersion(ss *apps.StatefulSet, mysqlAgentImage string, version string) *apps.StatefulSet {
targetContainer := statefulsets.MySQLAgentName
newAgentImage := fmt.Sprintf("%s:%s", mysqlAgentImage, version)
ss.ObjectMeta.Labels[constants.MySQLOperatorVersionLabel] = version
for idx, container := range ss.Spec.Template.Spec.Containers {
if container.Name == targetContainer {
ss.Spec.Template.Spec.Containers[idx].Image = newAgentImage
break
}
}
return ss
}