tidb stat 源码
tidb stat 代码
文件路径：/server/stat.go
// Copyright 2021 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 server
import (
"crypto/x509"
"time"
"github.com/pingcap/tidb/domain/infosync"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/util/logutil"
"go.uber.org/zap"
)
var (
serverNotAfter = "Ssl_server_not_after"
serverNotBefore = "Ssl_server_not_before"
upTime = "Uptime"
)
var defaultStatus = map[string]*variable.StatusVal{
serverNotAfter: {Scope: variable.ScopeGlobal | variable.ScopeSession, Value: ""},
serverNotBefore: {Scope: variable.ScopeGlobal | variable.ScopeSession, Value: ""},
upTime: {Scope: variable.ScopeGlobal, Value: 0},
}
// GetScope gets the status variables scope.
func (s *Server) GetScope(status string) variable.ScopeFlag {
return variable.DefaultStatusVarScopeFlag
}
// Stats returns the server statistics.
func (s *Server) Stats(vars *variable.SessionVars) (map[string]interface{}, error) {
m := make(map[string]interface{}, len(defaultStatus))
for name, v := range defaultStatus {
m[name] = v.Value
}
tlsConfig := s.getTLSConfig()
if tlsConfig != nil {
if len(tlsConfig.Certificates) == 1 {
pc, err := x509.ParseCertificate(tlsConfig.Certificates[0].Certificate[0])
if err != nil {
logutil.BgLogger().Error("Failed to parse TLS certficates to get server status", zap.Error(err))
} else {
m[serverNotAfter] = pc.NotAfter.Format("Jan _2 15:04:05 2006 MST")
m[serverNotBefore] = pc.NotBefore.Format("Jan _2 15:04:05 2006 MST")
}
}
}
var err error
info := serverInfo{}
info.ServerInfo, err = infosync.GetServerInfo()
if err != nil {
logutil.BgLogger().Error("Failed to get ServerInfo for uptime status", zap.Error(err))
} else {
m[upTime] = int64(time.Since(time.Unix(info.ServerInfo.StartTimestamp, 0)).Seconds())
}
return m, nil
}
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