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// Copyright 2015 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package variable_test
import (
"time"
. "github.com/pingcap/check"
"github.com/pingcap/parser"
"github.com/pingcap/parser/auth"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/sessionctx/stmtctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/execdetails"
"github.com/pingcap/tidb/util/mock"
)
var _ = SerialSuites(&testSessionSuite{})
type testSessionSuite struct {
}
func (*testSessionSuite) TestSetSystemVariable(c *C) {
v := variable.NewSessionVars()
v.GlobalVarsAccessor = variable.NewMockGlobalAccessor()
v.TimeZone = time.UTC
tests := []struct {
key string
value interface{}
err bool
}{
{variable.TxnIsolation, "SERIALIZABLE", true},
{variable.TimeZone, "xyz", true},
{variable.TiDBOptAggPushDown, "1", false},
{variable.TiDBOptDistinctAggPushDown, "1", false},
{variable.TIDBMemQuotaQuery, "1024", false},
{variable.TIDBMemQuotaHashJoin, "1024", false},
{variable.TIDBMemQuotaMergeJoin, "1024", false},
{variable.TIDBMemQuotaSort, "1024", false},
{variable.TIDBMemQuotaTopn, "1024", false},
{variable.TIDBMemQuotaIndexLookupReader, "1024", false},
{variable.TIDBMemQuotaIndexLookupJoin, "1024", false},
{variable.TIDBMemQuotaNestedLoopApply, "1024", false},
{variable.TiDBEnableStmtSummary, "1", false},
}
for _, t := range tests {
err := variable.SetSessionSystemVar(v, t.key, types.NewDatum(t.value))
if t.err {
c.Assert(err, NotNil)
} else {
c.Assert(err, IsNil)
}
}
}
func (*testSessionSuite) TestSession(c *C) {
ctx := mock.NewContext()
ss := ctx.GetSessionVars().StmtCtx
c.Assert(ss, NotNil)
// For AffectedRows
ss.AddAffectedRows(1)
c.Assert(ss.AffectedRows(), Equals, uint64(1))
ss.AddAffectedRows(1)
c.Assert(ss.AffectedRows(), Equals, uint64(2))
// For RecordRows
ss.AddRecordRows(1)
c.Assert(ss.RecordRows(), Equals, uint64(1))
ss.AddRecordRows(1)
c.Assert(ss.RecordRows(), Equals, uint64(2))
// For FoundRows
ss.AddFoundRows(1)
c.Assert(ss.FoundRows(), Equals, uint64(1))
ss.AddFoundRows(1)
c.Assert(ss.FoundRows(), Equals, uint64(2))
// For UpdatedRows
ss.AddUpdatedRows(1)
c.Assert(ss.UpdatedRows(), Equals, uint64(1))
ss.AddUpdatedRows(1)
c.Assert(ss.UpdatedRows(), Equals, uint64(2))
// For TouchedRows
ss.AddTouchedRows(1)
c.Assert(ss.TouchedRows(), Equals, uint64(1))
ss.AddTouchedRows(1)
c.Assert(ss.TouchedRows(), Equals, uint64(2))
// For CopiedRows
ss.AddCopiedRows(1)
c.Assert(ss.CopiedRows(), Equals, uint64(1))
ss.AddCopiedRows(1)
c.Assert(ss.CopiedRows(), Equals, uint64(2))
// For last insert id
ctx.GetSessionVars().SetLastInsertID(1)
c.Assert(ctx.GetSessionVars().StmtCtx.LastInsertID, Equals, uint64(1))
ss.ResetForRetry()
c.Assert(ss.AffectedRows(), Equals, uint64(0))
c.Assert(ss.FoundRows(), Equals, uint64(0))
c.Assert(ss.UpdatedRows(), Equals, uint64(0))
c.Assert(ss.RecordRows(), Equals, uint64(0))
c.Assert(ss.TouchedRows(), Equals, uint64(0))
c.Assert(ss.CopiedRows(), Equals, uint64(0))
c.Assert(ss.WarningCount(), Equals, uint16(0))
}
func (*testSessionSuite) TestSlowLogFormat(c *C) {
ctx := mock.NewContext()
seVar := ctx.GetSessionVars()
c.Assert(seVar, NotNil)
seVar.User = &auth.UserIdentity{Username: "root", Hostname: "192.168.0.1"}
seVar.ConnectionInfo = &variable.ConnectionInfo{ClientIP: "192.168.0.1"}
seVar.ConnectionID = 1
seVar.CurrentDB = "test"
seVar.InRestrictedSQL = true
txnTS := uint64(406649736972468225)
costTime := time.Second
execDetail := execdetails.ExecDetails{
ProcessTime: time.Second * time.Duration(2),
WaitTime: time.Minute,
BackoffTime: time.Millisecond,
RequestCount: 2,
TotalKeys: 10000,
ProcessedKeys: 20001,
}
statsInfos := make(map[string]uint64)
statsInfos["t1"] = 0
copTasks := &stmtctx.CopTasksDetails{
NumCopTasks: 10,
AvgProcessTime: time.Second,
P90ProcessTime: time.Second * 2,
MaxProcessAddress: "10.6.131.78",
MaxProcessTime: time.Second * 3,
AvgWaitTime: time.Millisecond * 10,
P90WaitTime: time.Millisecond * 20,
MaxWaitTime: time.Millisecond * 30,
MaxWaitAddress: "10.6.131.79",
MaxBackoffTime: make(map[string]time.Duration),
AvgBackoffTime: make(map[string]time.Duration),
P90BackoffTime: make(map[string]time.Duration),
TotBackoffTime: make(map[string]time.Duration),
TotBackoffTimes: make(map[string]int),
MaxBackoffAddress: make(map[string]string),
}
backoffs := []string{"rpcTiKV", "rpcPD", "regionMiss"}
for _, backoff := range backoffs {
copTasks.MaxBackoffTime[backoff] = time.Millisecond * 200
copTasks.MaxBackoffAddress[backoff] = "127.0.0.1"
copTasks.AvgBackoffTime[backoff] = time.Millisecond * 200
copTasks.P90BackoffTime[backoff] = time.Millisecond * 200
copTasks.TotBackoffTime[backoff] = time.Millisecond * 200
copTasks.TotBackoffTimes[backoff] = 200
}
var memMax int64 = 2333
var diskMax int64 = 6666
resultFields := `# Txn_start_ts: 406649736972468225
# User@Host: root[root] @ 192.168.0.1 [192.168.0.1]
# Conn_ID: 1
# Exec_retry_time: 5.1 Exec_retry_count: 3
# Query_time: 1
# Parse_time: 0.00000001
# Compile_time: 0.00000001
# Rewrite_time: 0.000000003 Preproc_subqueries: 2 Preproc_subqueries_time: 0.000000002
# Process_time: 2 Wait_time: 60 Backoff_time: 0.001 Request_count: 2 Total_keys: 10000 Process_keys: 20001
# DB: test
# Index_names: [t1:a,t2:b]
# Is_internal: true
# Digest: f94c76d7fa8f60e438118752bfbfb71fe9e1934888ac415ddd8625b121af124c
# Stats: t1:pseudo
# Num_cop_tasks: 10
# Cop_proc_avg: 1 Cop_proc_p90: 2 Cop_proc_max: 3 Cop_proc_addr: 10.6.131.78
# Cop_wait_avg: 0.01 Cop_wait_p90: 0.02 Cop_wait_max: 0.03 Cop_wait_addr: 10.6.131.79
# Cop_backoff_regionMiss_total_times: 200 Cop_backoff_regionMiss_total_time: 0.2 Cop_backoff_regionMiss_max_time: 0.2 Cop_backoff_regionMiss_max_addr: 127.0.0.1 Cop_backoff_regionMiss_avg_time: 0.2 Cop_backoff_regionMiss_p90_time: 0.2
# Cop_backoff_rpcPD_total_times: 200 Cop_backoff_rpcPD_total_time: 0.2 Cop_backoff_rpcPD_max_time: 0.2 Cop_backoff_rpcPD_max_addr: 127.0.0.1 Cop_backoff_rpcPD_avg_time: 0.2 Cop_backoff_rpcPD_p90_time: 0.2
# Cop_backoff_rpcTiKV_total_times: 200 Cop_backoff_rpcTiKV_total_time: 0.2 Cop_backoff_rpcTiKV_max_time: 0.2 Cop_backoff_rpcTiKV_max_addr: 127.0.0.1 Cop_backoff_rpcTiKV_avg_time: 0.2 Cop_backoff_rpcTiKV_p90_time: 0.2
# Mem_max: 2333
# Disk_max: 6666
# Prepared: true
# Plan_from_cache: true
# Has_more_results: true
# KV_total: 10
# PD_total: 11
# Backoff_total: 12
# Write_sql_response_total: 1
# Succ: true`
sql := "select * from t;"
_, digest := parser.NormalizeDigest(sql)
logItems := &variable.SlowQueryLogItems{
TxnTS: txnTS,
SQL: sql,
Digest: digest,
TimeTotal: costTime,
TimeParse: time.Duration(10),
TimeCompile: time.Duration(10),
IndexNames: "[t1:a,t2:b]",
StatsInfos: statsInfos,
CopTasks: copTasks,
ExecDetail: execDetail,
MemMax: memMax,
DiskMax: diskMax,
Prepared: true,
PlanFromCache: true,
HasMoreResults: true,
KVTotal: 10 * time.Second,
PDTotal: 11 * time.Second,
BackoffTotal: 12 * time.Second,
WriteSQLRespTotal: 1 * time.Second,
Succ: true,
RewriteInfo: variable.RewritePhaseInfo{
DurationRewrite: 3,
DurationPreprocessSubQuery: 2,
PreprocessSubQueries: 2,
},
ExecRetryCount: 3,
ExecRetryTime: 5*time.Second + time.Millisecond*100,
}
logString := seVar.SlowLogFormat(logItems)
c.Assert(logString, Equals, resultFields+"\n"+sql)
seVar.CurrentDBChanged = true
logString = seVar.SlowLogFormat(logItems)
c.Assert(logString, Equals, resultFields+"\n"+"use test;\n"+sql)
c.Assert(seVar.CurrentDBChanged, IsFalse)
}
func (*testSessionSuite) TestIsolationRead(c *C) {
defer config.RestoreFunc()()
config.UpdateGlobal(func(conf *config.Config) {
conf.IsolationRead.Engines = []string{"tiflash", "tidb"}
})
sessVars := variable.NewSessionVars()
_, ok := sessVars.IsolationReadEngines[kv.TiDB]
c.Assert(ok, Equals, true)
_, ok = sessVars.IsolationReadEngines[kv.TiKV]
c.Assert(ok, Equals, false)
_, ok = sessVars.IsolationReadEngines[kv.TiFlash]
c.Assert(ok, Equals, true)
}