75b9470a74
*: add a column describing memory usage for table information_schema.processlist Closes #10199
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"fmt"
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"time"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/sessionctx/stmtctx"
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)
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// ProcessInfo is a struct used for show processlist statement.
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type ProcessInfo struct {
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ID uint64
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User string
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Host string
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DB string
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Command byte
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Plan interface{}
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Time time.Time
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State uint16
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Info string
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CurTxnStartTS uint64
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StmtCtx *stmtctx.StatementContext
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StatsInfo func(interface{}) map[string]uint64
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ExceedExpensiveTimeThresh bool
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}
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// ToRowForShow returns []interface{} for the row data of "SHOW [FULL] PROCESSLIST".
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func (pi *ProcessInfo) ToRowForShow(full bool) []interface{} {
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var info string
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if full {
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info = pi.Info
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} else {
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info = fmt.Sprintf("%.100v", pi.Info)
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}
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t := uint64(time.Since(pi.Time) / time.Second)
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return []interface{}{
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pi.ID,
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pi.User,
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pi.Host,
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pi.DB,
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mysql.Command2Str[pi.Command],
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t,
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fmt.Sprintf("%d", pi.State),
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info,
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}
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}
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// ToRow returns []interface{} for the row data of
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// "SELECT * FROM INFORMATION_SCHEMA.PROCESSLIST".
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func (pi *ProcessInfo) ToRow() []interface{} {
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return append(pi.ToRowForShow(true), pi.StmtCtx.MemTracker.BytesConsumed())
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}
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// SessionManager is an interface for session manage. Show processlist and
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// kill statement rely on this interface.
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type SessionManager interface {
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ShowProcessList() map[uint64]*ProcessInfo
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GetProcessInfo(id uint64) (*ProcessInfo, bool)
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Kill(connectionID uint64, query bool)
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}
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