240 lines
6.9 KiB
Go
240 lines
6.9 KiB
Go
// Copyright 2016 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 executor
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import (
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"context"
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/parser/auth"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/expression"
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"github.com/pingcap/tidb/sessionctx/stmtctx"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/mock"
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"github.com/pingcap/tidb/util/ranger"
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)
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var _ = Suite(&testExecSuite{})
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type testExecSuite struct {
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}
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// mockSessionManager is a mocked session manager which is used for test.
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type mockSessionManager struct {
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PS []util.ProcessInfo
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}
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// ShowProcessList implements the SessionManager.ShowProcessList interface.
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func (msm *mockSessionManager) ShowProcessList() map[uint64]util.ProcessInfo {
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ret := make(map[uint64]util.ProcessInfo)
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for _, item := range msm.PS {
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ret[item.ID] = item
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}
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return ret
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}
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func (msm *mockSessionManager) GetProcessInfo(id uint64) (util.ProcessInfo, bool) {
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for _, item := range msm.PS {
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if item.ID == id {
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return item, true
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}
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}
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return util.ProcessInfo{}, false
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}
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// Kill implements the SessionManager.Kill interface.
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func (msm *mockSessionManager) Kill(cid uint64, query bool) {
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}
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func (s *testExecSuite) TestShowProcessList(c *C) {
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// Compose schema.
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names := []string{"Id", "User", "Host", "db", "Command", "Time", "State", "Info"}
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ftypes := []byte{mysql.TypeLonglong, mysql.TypeVarchar, mysql.TypeVarchar,
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mysql.TypeVarchar, mysql.TypeVarchar, mysql.TypeLong, mysql.TypeVarchar, mysql.TypeString}
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schema := buildSchema(names, ftypes)
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// Compose a mocked session manager.
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ps := make([]util.ProcessInfo, 0, 1)
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pi := util.ProcessInfo{
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ID: 0,
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User: "test",
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Host: "127.0.0.1",
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DB: "test",
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Command: 't',
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State: 1,
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Info: "",
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}
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ps = append(ps, pi)
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sm := &mockSessionManager{
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PS: ps,
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}
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sctx := mock.NewContext()
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sctx.SetSessionManager(sm)
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sctx.GetSessionVars().User = &auth.UserIdentity{Username: "test"}
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// Compose executor.
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e := &ShowExec{
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baseExecutor: newBaseExecutor(sctx, schema, ""),
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Tp: ast.ShowProcessList,
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}
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ctx := context.Background()
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err := e.Open(ctx)
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c.Assert(err, IsNil)
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chk := e.newFirstChunk()
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it := chunk.NewIterator4Chunk(chk)
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// Run test and check results.
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for _, p := range ps {
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err = e.Next(context.Background(), chunk.NewRecordBatch(chk))
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c.Assert(err, IsNil)
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for row := it.Begin(); row != it.End(); row = it.Next() {
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c.Assert(row.GetUint64(0), Equals, p.ID)
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}
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}
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err = e.Next(context.Background(), chunk.NewRecordBatch(chk))
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c.Assert(err, IsNil)
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c.Assert(chk.NumRows(), Equals, 0)
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err = e.Close()
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c.Assert(err, IsNil)
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}
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func buildSchema(names []string, ftypes []byte) *expression.Schema {
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schema := expression.NewSchema(make([]*expression.Column, 0, len(names))...)
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for i := range names {
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col := &expression.Column{
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ColName: model.NewCIStr(names[i]),
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}
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// User varchar as the default return column type.
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tp := mysql.TypeVarchar
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if len(ftypes) != 0 && ftypes[0] != mysql.TypeUnspecified {
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tp = ftypes[0]
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}
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fieldType := types.NewFieldType(tp)
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fieldType.Flen, fieldType.Decimal = mysql.GetDefaultFieldLengthAndDecimal(tp)
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fieldType.Charset, fieldType.Collate = types.DefaultCharsetForType(tp)
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col.RetType = fieldType
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schema.Append(col)
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}
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return schema
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}
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func (s *testExecSuite) TestBuildKvRangesForIndexJoin(c *C) {
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indexRanges := make([]*ranger.Range, 0, 6)
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indexRanges = append(indexRanges, generateIndexRange(1, 1, 1, 1, 1))
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indexRanges = append(indexRanges, generateIndexRange(1, 1, 2, 1, 1))
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indexRanges = append(indexRanges, generateIndexRange(1, 1, 2, 1, 2))
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indexRanges = append(indexRanges, generateIndexRange(1, 1, 3, 1, 1))
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indexRanges = append(indexRanges, generateIndexRange(2, 1, 1, 1, 1))
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indexRanges = append(indexRanges, generateIndexRange(2, 1, 2, 1, 1))
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joinKeyRows := make([][]types.Datum, 0, 5)
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joinKeyRows = append(joinKeyRows, generateDatumSlice(1, 1))
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joinKeyRows = append(joinKeyRows, generateDatumSlice(1, 2))
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joinKeyRows = append(joinKeyRows, generateDatumSlice(2, 1))
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joinKeyRows = append(joinKeyRows, generateDatumSlice(2, 2))
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joinKeyRows = append(joinKeyRows, generateDatumSlice(2, 3))
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keyOff2IdxOff := []int{1, 3}
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sc := &stmtctx.StatementContext{TimeZone: time.Local}
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kvRanges, err := buildKvRangesForIndexJoin(sc, 0, 0, joinKeyRows, indexRanges, keyOff2IdxOff)
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c.Assert(err, IsNil)
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// Check the kvRanges is in order.
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for i, kvRange := range kvRanges {
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c.Assert(kvRange.StartKey.Cmp(kvRange.EndKey) < 0, IsTrue)
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if i > 0 {
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c.Assert(kvRange.StartKey.Cmp(kvRanges[i-1].EndKey) >= 0, IsTrue)
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}
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}
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}
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func generateIndexRange(vals ...int64) *ranger.Range {
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lowDatums := generateDatumSlice(vals...)
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highDatums := make([]types.Datum, len(vals))
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copy(highDatums, lowDatums)
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return &ranger.Range{LowVal: lowDatums, HighVal: highDatums}
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}
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func generateDatumSlice(vals ...int64) []types.Datum {
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datums := make([]types.Datum, len(vals))
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for i, val := range vals {
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datums[i].SetInt64(val)
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}
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return datums
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}
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func (s *testExecSuite) TestGetFieldsFromLine(c *C) {
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tests := []struct {
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input string
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expected []string
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}{
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{
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`"1","a string","100.20"`,
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[]string{"1", "a string", "100.20"},
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},
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{
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`"2","a string containing a , comma","102.20"`,
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[]string{"2", "a string containing a , comma", "102.20"},
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},
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{
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`"3","a string containing a \" quote","102.20"`,
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[]string{"3", "a string containing a \" quote", "102.20"},
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},
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{
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`"4","a string containing a \", quote and comma","102.20"`,
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[]string{"4", "a string containing a \", quote and comma", "102.20"},
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},
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// Test some escape char.
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{
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`"\0\b\n\r\t\Z\\\ \c\'\""`,
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[]string{string([]byte{0, '\b', '\n', '\r', '\t', 26, '\\', ' ', ' ', 'c', '\'', '"'})},
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},
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// Test mixed.
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{
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`"123",456,"\t7890",abcd`,
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[]string{"123", "456", "\t7890", "abcd"},
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},
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}
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ldInfo := LoadDataInfo{
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FieldsInfo: &ast.FieldsClause{
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Enclosed: '"',
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Terminated: ",",
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},
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}
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for _, test := range tests {
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got, err := ldInfo.getFieldsFromLine([]byte(test.input))
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c.Assert(err, IsNil, Commentf("failed: %s", test.input))
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assertEqualStrings(c, got, test.expected)
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}
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_, err := ldInfo.getFieldsFromLine([]byte(`1,a string,100.20`))
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c.Assert(err, IsNil)
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}
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func assertEqualStrings(c *C, got []field, expect []string) {
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c.Assert(len(got), Equals, len(expect))
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for i := 0; i < len(got); i++ {
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c.Assert(string(got[i].str), Equals, expect[i])
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}
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}
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