/
pod_control.go
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/
pod_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"
"k8s.io/api/core/v1"
"k8s.io/client-go/kubernetes"
corelistersv1 "k8s.io/client-go/listers/core/v1"
"github.com/oracle/mysql-operator/pkg/constants"
"github.com/oracle/mysql-operator/pkg/controllers/util"
"github.com/oracle/mysql-operator/pkg/resources/statefulsets"
)
// PodControlInterface defines the interface that the
// ClusterController uses to create, update, and delete mysql pods. It
// is implemented as an interface to enable testing.
type PodControlInterface interface {
PatchPod(old *v1.Pod, new *v1.Pod) error
}
type realPodControl struct {
client kubernetes.Interface
podLister corelistersv1.PodLister
}
// NewRealPodControl creates a concrete implementation of the
// PodControlInterface.
func NewRealPodControl(client kubernetes.Interface, podLister corelistersv1.PodLister) PodControlInterface {
return &realPodControl{client: client, podLister: podLister}
}
func (rpc *realPodControl) PatchPod(old *v1.Pod, new *v1.Pod) error {
_, err := util.PatchPod(rpc.client, old, new)
return err
}
// updatePodToOperatorVersion sets the specified MySQLOperator version on:
// 1. The Pod operator version label.
// 2. The MySQLAgent container image version
func updatePodToOperatorVersion(pod *v1.Pod, mysqlAgentImage, version string) *v1.Pod {
targetContainer := statefulsets.MySQLAgentName
newAgentImage := fmt.Sprintf("%s:%s", mysqlAgentImage, version)
pod.Labels[constants.MySQLOperatorVersionLabel] = version
for idx, container := range pod.Spec.Containers {
if container.Name == targetContainer {
pod.Spec.Containers[idx].Image = newAgentImage
break
}
}
return pod
}