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*: Save Xenon's metadata to config map. radondb#406
subpath -> configmap subpath may not work in some conditions.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| /* | ||
| Copyright 2021 RadonDB. | ||
| 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 syncer | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
||
| "github.com/presslabs/controller-util/syncer" | ||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
||
| "github.com/radondb/radondb-mysql-kubernetes/mysqlcluster" | ||
| "github.com/radondb/radondb-mysql-kubernetes/utils" | ||
| ) | ||
|
|
||
| // NewConfigMapSyncer returns configmap syncer. | ||
| func NewXenonCMSyncer(cli client.Client, c *mysqlcluster.MysqlCluster) syncer.Interface { | ||
| cm := &corev1.ConfigMap{ | ||
| TypeMeta: metav1.TypeMeta{ | ||
| APIVersion: "v1", | ||
| Kind: "ConfigMap", | ||
| }, | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: c.GetNameForResource(utils.XenonMetaData), | ||
| Namespace: c.Namespace, | ||
| Labels: c.GetLabels(), | ||
| }, | ||
| } | ||
|
|
||
| return syncer.NewObjectSyncer("ConfigMap", c.Unwrap(), cm, cli, func() error { | ||
| // If the cluster is closed, need not to modify the xenon metadata. | ||
| if int(*c.Spec.Replicas) == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| metaData, err := buildXenonMetaData(c) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to build xenon metadata: %s", err) | ||
| } | ||
|
|
||
| cm.Data = map[string]string{ | ||
| "peers.json": metaData, | ||
| } | ||
|
|
||
| return nil | ||
| }) | ||
| } | ||
|
|
||
| type XenonMetaData struct { | ||
| Idlepeers []string `json:"idlepeers"` | ||
| Peers []string `json:"peers"` | ||
| } | ||
|
|
||
| // buildXenonMetaData build the mysql config. | ||
| func buildXenonMetaData(c *mysqlcluster.MysqlCluster) (string, error) { | ||
| replicas := c.Spec.Replicas | ||
| xenonMetaData := XenonMetaData{} | ||
| for i := 0; i < int(*replicas); i++ { | ||
| // sample-mysql-0.sample-mysql.default:8801 | ||
| xenonMetaData.Peers = append(xenonMetaData.Peers, | ||
| fmt.Sprintf("%s-%d.%s.%s:8801", c.GetNameForResource(utils.StatefulSet), i, c.GetNameForResource(utils.HeadlessSVC), c.Namespace)) | ||
| } | ||
| metaJson, err := json.Marshal(xenonMetaData) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return string(metaJson), nil | ||
| } |
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