tidb status 源码
tidb status 代码
文件路径：/telemetry/status.go
// Copyright 2020 PingCAP, Inc.
//
// 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 telemetry
import (
"context"
"encoding/json"
"github.com/pingcap/errors"
clientv3 "go.etcd.io/etcd/client/v3"
)
const (
statusKey = "/tidb/telemetry/status"
)
type status struct {
CheckAt string `json:"check_at"`
IsError bool `json:"is_error"`
ErrorMessage string `json:"error_msg"`
IsRequestSent bool `json:"is_request_sent"`
}
// updateTelemetryStatus updates the telemetry status to etcd.
func updateTelemetryStatus(s status, etcdClient *clientv3.Client) error {
if etcdClient == nil {
return nil
}
j, err := json.MarshalIndent(s, "", " ")
if err != nil {
return errors.Trace(err)
}
ctx, cancel := context.WithTimeout(context.Background(), etcdOpTimeout)
defer cancel()
_, err = etcdClient.Put(ctx, statusKey, string(j))
if err != nil {
return errors.Trace(err)
}
return nil
}
// GetTelemetryStatus returns the telemetry status saved in etcd.
func GetTelemetryStatus(etcdClient *clientv3.Client) (string, error) {
if etcdClient == nil {
return "", nil
}
ctx, cancel := context.WithTimeout(context.Background(), etcdOpTimeout)
defer cancel()
resp, err := etcdClient.Get(ctx, statusKey)
if err != nil {
return "", errors.Trace(err)
}
if len(resp.Kvs) == 0 {
return "", nil
}
return string(resp.Kvs[0].Value), nil
}
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