tidb id 源码
tidb id 代码
文件路径：/telemetry/id.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"
"github.com/google/uuid"
"github.com/pingcap/errors"
clientv3 "go.etcd.io/etcd/client/v3"
)
const (
// trackingIDKey is a random tracking for the cluster that is saved to etcd. Tracking ID can be reset by user.
trackingIDKey = "/tidb/telemetry/tracking_id"
)
// ResetTrackingID generates a new tracking ID.
func ResetTrackingID(etcdClient *clientv3.Client) (string, error) {
if etcdClient == nil {
return "", nil
}
id := uuid.New().String()
ctx, cancel := context.WithTimeout(context.Background(), etcdOpTimeout)
defer cancel()
_, err := etcdClient.Put(ctx, trackingIDKey, id)
if err != nil {
return "", errors.Trace(err)
}
return id, nil
}
// GetTrackingID gets the current tracking ID.
// It is possible that return value is empty, which means the ID is not generated yet.
func GetTrackingID(etcdClient *clientv3.Client) (string, error) {
if etcdClient == nil {
return "", nil
}
ctx, cancel := context.WithTimeout(context.Background(), etcdOpTimeout)
defer cancel()
resp, err := etcdClient.Get(ctx, trackingIDKey)
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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