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executor, session: replace new line and add user in query log #6748

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merged 7 commits into from
Jun 11, 2018
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executor, session: replace new line and add user in query log #6748

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be234d3
executor, session: replace new line and add user in query log
coocood Jun 4, 2018
955cdae
refine general log and slow log format
coocood Jun 4, 2018
b3fbac0
address comment
coocood Jun 5, 2018
f59855a
address comment
coocood Jun 6, 2018
95b2dde
address comment
coocood Jun 11, 2018
62314b6
Merge branch 'master' into refine-query-log
coocood Jun 11, 2018
784d3dc
Merge branch 'master' into refine-query-log
zimulala Jun 11, 2018
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29 changes: 20 additions & 9 deletions executor/adapter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -324,6 +324,9 @@ func (a *ExecStmt) buildExecutor(ctx sessionctx.Context) (Executor, error) {
return e, nil
}

// QueryReplacer replaces new line and tab for grep result including query string.
var QueryReplacer = strings.NewReplacer("\r", "", "\n", "", "\t", " ")
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How about there is a newline or tab in the string literal?

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@coocood coocood Jun 5, 2018 •
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It will be escaped as three characters `\' '\' 'n' instead of a single character '\n'.

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@coocood coocood Jun 5, 2018 •
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This query is used for logging, it's ok even if we replace new line in the string.


func (a *ExecStmt) logSlowQuery(txnTS uint64, succ bool) {
level := log.GetLevel()
if level < log.WarnLevel {
Expand All @@ -339,19 +342,27 @@ func (a *ExecStmt) logSlowQuery(txnTS uint64, succ bool) {
if len(sql) > int(cfg.Log.QueryLogMaxLen) {
sql = fmt.Sprintf("%.*q(len:%d)", cfg.Log.QueryLogMaxLen, sql, len(a.Text))
}
connID := a.Ctx.GetSessionVars().ConnectionID
currentDB := a.Ctx.GetSessionVars().CurrentDB
tableIDs := strings.Replace(fmt.Sprintf("%v", a.Ctx.GetSessionVars().StmtCtx.TableIDs), " ", ",", -1)
indexIDs := strings.Replace(fmt.Sprintf("%v", a.Ctx.GetSessionVars().StmtCtx.IndexIDs), " ", ",", -1)

sql = QueryReplacer.Replace(sql)

sessVars := a.Ctx.GetSessionVars()
connID := sessVars.ConnectionID
currentDB := sessVars.CurrentDB
var tableIDs, indexIDs string
if len(sessVars.StmtCtx.TableIDs) > 0 {
tableIDs = strings.Replace(fmt.Sprintf("table_ids:%v ", a.Ctx.GetSessionVars().StmtCtx.TableIDs), " ", ",", -1)
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Why do you want to replace spaces with commas? I think it has a certain loss of performance. If it is not necessary, it may not be done.

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It is useful when we need to use ' ' as fields separator.

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@lysu lysu Jun 6, 2018 •
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or should we Itoa to []string and strings.Join if performance is critial?

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The performance is not critical here, we better use a simpler solution.

}
if len(sessVars.StmtCtx.IndexIDs) > 0 {
indexIDs = strings.Replace(fmt.Sprintf("index_ids:%v ", a.Ctx.GetSessionVars().StmtCtx.IndexIDs), " ", ",", -1)
}
user := a.Ctx.GetSessionVars().User
if costTime < threshold {
logutil.SlowQueryLogger.Debugf(
"[QUERY] cost_time:%v succ:%v connection_id:%v txn_start_ts:%v database:%v table_ids:%v index_ids:%v sql:%v",
costTime, succ, connID, txnTS, currentDB, tableIDs, indexIDs, sql)
"[QUERY] cost_time:%v succ:%v connection_id:%v user:%s txn_start_ts:%v database:%v %v%vsql:%v",
costTime, succ, connID, user, txnTS, currentDB, tableIDs, indexIDs, sql)
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Does the user contain host-ip?

} else {
logutil.SlowQueryLogger.Warnf(
"[SLOW_QUERY] cost_time:%v succ:%v connection_id:%v txn_start_ts:%v database:%v table_ids:%v index_ids:%v sql:%v",
costTime, succ, connID, txnTS, currentDB, tableIDs, indexIDs, sql)
"[SLOW_QUERY] cost_time:%v succ:%v connection_id:%v user:%s txn_start_ts:%v database:%v %v%vsql:%v",
costTime, succ, connID, user, txnTS, currentDB, tableIDs, indexIDs, sql)
}
}

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3 changes: 2 additions & 1 deletion session/session.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1468,6 +1468,7 @@ func logStmt(node ast.StmtNode, vars *variable.SessionVars) {

func logQuery(query string, vars *variable.SessionVars) {
if atomic.LoadUint32(&variable.ProcessGeneralLog) != 0 && !vars.InRestrictedSQL {
log.Infof("[con:%d][schema ver:%d][txn:%d] %s", vars.ConnectionID, vars.TxnCtx.SchemaVersion, vars.TxnCtx.StartTS, query)
query = executor.QueryReplacer.Replace(query)
log.Infof("[con:%d][user:%s][schema_ver:%d][txn:%d] %s", vars.ConnectionID, vars.User, vars.TxnCtx.SchemaVersion, vars.TxnCtx.StartTS, query)
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Could you post an example of the new log?

}
}