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server_test.go
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server_test.go
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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,
// 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 (
"bufio"
"bytes"
"context"
"encoding/json"
"os"
"path/filepath"
"testing"
"github.com/pingcap/failpoint"
"github.com/pingcap/tidb/pkg/parser/auth"
"github.com/pingcap/tidb/pkg/parser/mysql"
"github.com/pingcap/tidb/pkg/server/internal"
"github.com/pingcap/tidb/pkg/server/internal/testutil"
"github.com/pingcap/tidb/pkg/server/internal/util"
"github.com/pingcap/tidb/pkg/testkit"
"github.com/pingcap/tidb/pkg/testkit/testdata"
"github.com/pingcap/tidb/pkg/util/arena"
"github.com/pingcap/tidb/pkg/util/chunk"
"github.com/pingcap/tidb/pkg/util/replayer"
"github.com/stretchr/testify/require"
)
// cmd: go test -run=^TestOptimizerDebugTrace$ --tags=intest github.com/pingcap/tidb/pkg/server
// If you want to update the test result, please run the following command:
// cmd: go test -run=^TestOptimizerDebugTrace$ --tags=intest github.com/pingcap/tidb/pkg/server --record
func TestOptimizerDebugTrace(t *testing.T) {
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/planner/SetBindingTimeToZero", `return(true)`))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/planner/core/DebugTraceStableStatsTbl", `return(true)`))
defer func() {
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/planner/SetBindingTimeToZero"))
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/planner/core/DebugTraceStableStatsTbl"))
}()
store, dom := testkit.CreateMockStoreAndDomain(t)
tk := testkit.NewTestKit(t, store)
tidbdrv := NewTiDBDriver(store)
cfg := util.NewTestConfig()
cfg.Port, cfg.Status.StatusPort = 0, 0
cfg.Status.ReportStatus = false
server, err := NewServer(cfg, tidbdrv)
require.NoError(t, err)
defer server.Close()
cc := &clientConn{
server: server,
alloc: arena.NewAllocator(1024),
chunkAlloc: chunk.NewAllocator(),
pkt: internal.NewPacketIOForTest(bufio.NewWriter(bytes.NewBuffer(nil))),
}
ctx := context.Background()
cc.SetCtx(&TiDBContext{Session: tk.Session(), stmts: make(map[int]*TiDBStatement)})
tk.MustExec("use test")
tk.MustExec("create table t (col1 int, index i(col1))")
h := dom.StatsHandle()
require.NoError(t, h.HandleDDLEvent(<-h.DDLEventCh()))
tk.MustExec("plan replayer capture '0595c79f25d183319d0830ff8ca538c9054cbf407e5e27488b5dc40e4738a7c8' '*'")
tk.MustExec("plan replayer capture 'c0fcc0abbaaffcaafe21115a3c67ae5d96a188cc197559953d2865ea6852d3cc' '*'")
tk.MustExec("plan replayer capture '58fcbdd56a722c02225488c89a782cd2d626f8219c8ef8f57cd3bcdb6eb7c1b2' '*'")
require.NoError(t, cc.HandleStmtPrepare(ctx, "select sum(col1) from t where col1 < ? and col1 > 100"))
tk.MustExec("prepare stmt from 'select * from t where col1 in (?, 2, 3)'")
tk.MustExec("set @a = 1")
var (
in []string
out []any
)
optSuiteData := testDataMap["optimizer_suite"]
optSuiteData.LoadTestCases(t, &in, &out)
for i, cmdString := range in {
require.NoError(t, cc.dispatch(ctx, []byte(cmdString)))
traceInfo := cc.ctx.Session.GetSessionVars().StmtCtx.OptimizerDebugTrace
var buf bytes.Buffer
encoder := json.NewEncoder(&buf)
encoder.SetEscapeHTML(false)
require.NoError(t, encoder.Encode(traceInfo))
var res any
require.NoError(t, json.Unmarshal(buf.Bytes(), &res))
testdata.OnRecord(func() {
out[i] = res
})
require.Equal(t, out[i], res, cmdString)
}
prHandle := dom.GetPlanReplayerHandle()
worker := prHandle.GetWorker()
for i := 0; i < 3; i++ {
task := prHandle.DrainTask()
success := worker.HandleTask(task)
require.True(t, success)
require.NoError(t, os.Remove(filepath.Join(replayer.GetPlanReplayerDirName(), task.FileName)))
}
}
func TestIssue46197(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tidbdrv := NewTiDBDriver(store)
cfg := util.NewTestConfig()
cfg.Port, cfg.Status.StatusPort = 0, 0
cfg.Status.ReportStatus = false
server, err := NewServer(cfg, tidbdrv)
require.NoError(t, err)
defer server.Close()
// Mock the content of the SQL file in PacketIO buffer.
// First 4 bytes are the header, followed by the actual content.
// This acts like we are sending "select * from t1;" from the client when tidb requests the "a.txt" file.
var inBuffer bytes.Buffer
_, err = inBuffer.Write([]byte{0x11, 0x00, 0x00, 0x01})
require.NoError(t, err)
_, err = inBuffer.Write([]byte("select * from t1;"))
require.NoError(t, err)
// clientConn setup
brc := util.NewBufferedReadConn(&testutil.BytesConn{Buffer: inBuffer})
pkt := internal.NewPacketIO(brc)
pkt.SetBufWriter(bufio.NewWriter(bytes.NewBuffer(nil)))
cc := &clientConn{
server: server,
alloc: arena.NewAllocator(1024),
chunkAlloc: chunk.NewAllocator(),
pkt: pkt,
capability: mysql.ClientLocalFiles,
}
ctx := context.Background()
cc.SetCtx(&TiDBContext{Session: tk.Session(), stmts: make(map[int]*TiDBStatement)})
tk.MustExec("use test")
tk.MustExec("create table t1 (a int, b int)")
// 3 is mysql.ComQuery, followed by the SQL text.
require.NoError(t, cc.dispatch(ctx, []byte("\u0003plan replayer dump explain 'a.txt'")))
// clean up
path := testdata.ConvertRowsToStrings(tk.MustQuery("select @@tidb_last_plan_replayer_token").Rows())
require.NoError(t, os.Remove(filepath.Join(replayer.GetPlanReplayerDirName(), path[0])))
}
func TestGetConAttrs(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tidbdrv := NewTiDBDriver(store)
cfg := util.NewTestConfig()
cfg.Port, cfg.Status.StatusPort = 0, 0
cfg.Status.ReportStatus = false
server, err := NewServer(cfg, tidbdrv)
require.NoError(t, err)
cc := &clientConn{
server: server,
alloc: arena.NewAllocator(1024),
chunkAlloc: chunk.NewAllocator(),
pkt: internal.NewPacketIOForTest(bufio.NewWriter(bytes.NewBuffer(nil))),
attrs: map[string]string{
"_client_name": "tidb_test",
},
user: "userA",
peerHost: "foo.example.com",
}
cc.SetCtx(&TiDBContext{Session: tk.Session(), stmts: make(map[int]*TiDBStatement)})
server.registerConn(cc)
// Get attributes for all clients
attrs := server.GetConAttrs(nil)
require.Equal(t, attrs[1]["_client_name"], "tidb_test")
// Get attributes for userA@foo.example.com, which should have results for connID 1.
userA := &auth.UserIdentity{Username: "userA", Hostname: "foo.example.com"}
attrs = server.GetConAttrs(userA)
require.Equal(t, attrs[1]["_client_name"], "tidb_test")
_, hasClientName := attrs[1]
require.True(t, hasClientName)
// Get attributes for userB@foo.example.com, which should NOT have results for connID 1.
userB := &auth.UserIdentity{Username: "userB", Hostname: "foo.example.com"}
attrs = server.GetConAttrs(userB)
_, hasClientName = attrs[1]
require.False(t, hasClientName)
}
func TestSeverHealth(t *testing.T) {
RunInGoTestChan = make(chan struct{})
RunInGoTest = true
store := testkit.CreateMockStore(t)
tidbdrv := NewTiDBDriver(store)
cfg := util.NewTestConfig()
cfg.Port, cfg.Status.StatusPort = 0, 0
cfg.Status.ReportStatus = false
server, err := NewServer(cfg, tidbdrv)
require.NoError(t, err)
require.False(t, server.health.Load(), "server should not be healthy")
go func() {
err = server.Run(nil)
require.NoError(t, err)
}()
defer server.Close()
for range RunInGoTestChan {
// wait for server to be healthy
}
require.True(t, server.health.Load(), "server should be healthy")
}