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534 lines
16 KiB
534 lines
16 KiB
// 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 tablecodec
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import (
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"fmt"
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"math"
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"testing"
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/parser/terror"
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"github.com/pingcap/tidb/kv"
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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/codec"
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"github.com/pingcap/tidb/util/rowcodec"
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"github.com/pingcap/tidb/util/testleak"
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)
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func TestT(t *testing.T) {
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TestingT(t)
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}
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var _ = Suite(&testTableCodecSuite{})
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type testTableCodecSuite struct{}
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// TestTableCodec tests some functions in package tablecodec
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// TODO: add more tests.
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func (s *testTableCodecSuite) TestTableCodec(c *C) {
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defer testleak.AfterTest(c)()
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key := EncodeRowKey(1, codec.EncodeInt(nil, 2))
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h, err := DecodeRowKey(key)
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c.Assert(err, IsNil)
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c.Assert(h, Equals, int64(2))
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key = EncodeRowKeyWithHandle(1, 2)
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h, err = DecodeRowKey(key)
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c.Assert(err, IsNil)
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c.Assert(h, Equals, int64(2))
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}
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// column is a structure used for test
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type column struct {
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id int64
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tp *types.FieldType
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}
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func (s *testTableCodecSuite) TestRowCodec(c *C) {
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defer testleak.AfterTest(c)()
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c1 := &column{id: 1, tp: types.NewFieldType(mysql.TypeLonglong)}
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c2 := &column{id: 2, tp: types.NewFieldType(mysql.TypeVarchar)}
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c3 := &column{id: 3, tp: types.NewFieldType(mysql.TypeNewDecimal)}
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c4 := &column{id: 4, tp: &types.FieldType{Tp: mysql.TypeEnum, Elems: []string{"a"}}}
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c5 := &column{id: 5, tp: &types.FieldType{Tp: mysql.TypeSet, Elems: []string{"a"}}}
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c6 := &column{id: 6, tp: &types.FieldType{Tp: mysql.TypeBit, Flen: 8}}
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cols := []*column{c1, c2, c3, c4, c5, c6}
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row := make([]types.Datum, 6)
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row[0] = types.NewIntDatum(100)
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row[1] = types.NewBytesDatum([]byte("abc"))
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row[2] = types.NewDecimalDatum(types.NewDecFromInt(1))
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row[3] = types.NewMysqlEnumDatum(types.Enum{Name: "a", Value: 1})
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row[4] = types.NewDatum(types.Set{Name: "a", Value: 1})
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row[5] = types.NewDatum(types.BinaryLiteral{100})
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// Encode
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colIDs := make([]int64, 0, len(row))
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for _, col := range cols {
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colIDs = append(colIDs, col.id)
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}
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rd := rowcodec.Encoder{Enable: true}
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sc := &stmtctx.StatementContext{TimeZone: time.Local}
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bs, err := EncodeRow(sc, row, colIDs, nil, nil, &rd)
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c.Assert(err, IsNil)
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c.Assert(bs, NotNil)
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// Decode
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colMap := make(map[int64]*types.FieldType, len(row))
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for _, col := range cols {
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colMap[col.id] = col.tp
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}
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r, err := DecodeRow(bs, colMap, time.UTC)
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c.Assert(err, IsNil)
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c.Assert(r, NotNil)
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c.Assert(r, HasLen, len(row))
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// Compare decoded row and original row
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for i, col := range cols {
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v, ok := r[col.id]
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c.Assert(ok, IsTrue)
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equal, err1 := v.CompareDatum(sc, &row[i])
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c.Assert(err1, IsNil)
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c.Assert(equal, Equals, 0, Commentf("expect: %v, got %v", row[i], v))
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}
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// colMap may contains more columns than encoded row.
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//colMap[4] = types.NewFieldType(mysql.TypeFloat)
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r, err = DecodeRow(bs, colMap, time.UTC)
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c.Assert(err, IsNil)
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c.Assert(r, NotNil)
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c.Assert(r, HasLen, len(row))
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for i, col := range cols {
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v, ok := r[col.id]
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c.Assert(ok, IsTrue)
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equal, err1 := v.CompareDatum(sc, &row[i])
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c.Assert(err1, IsNil)
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c.Assert(equal, Equals, 0)
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}
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// colMap may contains less columns than encoded row.
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delete(colMap, 3)
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delete(colMap, 4)
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r, err = DecodeRow(bs, colMap, time.UTC)
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c.Assert(err, IsNil)
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c.Assert(r, NotNil)
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c.Assert(r, HasLen, len(row)-2)
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for i, col := range cols {
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if i > 1 {
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break
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}
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v, ok := r[col.id]
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c.Assert(ok, IsTrue)
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equal, err1 := v.CompareDatum(sc, &row[i])
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c.Assert(err1, IsNil)
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c.Assert(equal, Equals, 0)
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}
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// Make sure empty row return not nil value.
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bs, err = EncodeOldRow(sc, []types.Datum{}, []int64{}, nil, nil)
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c.Assert(err, IsNil)
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c.Assert(bs, HasLen, 1)
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r, err = DecodeRow(bs, colMap, time.UTC)
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c.Assert(err, IsNil)
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c.Assert(len(r), Equals, 0)
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}
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func (s *testTableCodecSuite) TestDecodeColumnValue(c *C) {
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sc := &stmtctx.StatementContext{TimeZone: time.Local}
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d := types.NewTimeDatum(types.NewTime(types.FromGoTime(time.Now()), mysql.TypeTimestamp, types.DefaultFsp))
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bs, err := EncodeOldRow(sc, []types.Datum{d}, []int64{1}, nil, nil)
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c.Assert(err, IsNil)
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c.Assert(bs, NotNil)
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_, bs, err = codec.CutOne(bs) // ignore colID
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c.Assert(err, IsNil)
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tp := types.NewFieldType(mysql.TypeTimestamp)
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d1, err := DecodeColumnValue(bs, tp, sc.TimeZone)
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c.Assert(err, IsNil)
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cmp, err := d1.CompareDatum(sc, &d)
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c.Assert(err, IsNil)
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c.Assert(cmp, Equals, 0)
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}
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func (s *testTableCodecSuite) TestUnflattenDatums(c *C) {
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sc := &stmtctx.StatementContext{TimeZone: time.UTC}
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input := types.MakeDatums(int64(1))
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tps := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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output, err := UnflattenDatums(input, tps, sc.TimeZone)
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c.Assert(err, IsNil)
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cmp, err := input[0].CompareDatum(sc, &output[0])
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c.Assert(err, IsNil)
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c.Assert(cmp, Equals, 0)
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}
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func (s *testTableCodecSuite) TestTimeCodec(c *C) {
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defer testleak.AfterTest(c)()
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c1 := &column{id: 1, tp: types.NewFieldType(mysql.TypeLonglong)}
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c2 := &column{id: 2, tp: types.NewFieldType(mysql.TypeVarchar)}
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c3 := &column{id: 3, tp: types.NewFieldType(mysql.TypeTimestamp)}
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c4 := &column{id: 4, tp: types.NewFieldType(mysql.TypeDuration)}
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cols := []*column{c1, c2, c3, c4}
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colLen := len(cols)
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row := make([]types.Datum, colLen)
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row[0] = types.NewIntDatum(100)
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row[1] = types.NewBytesDatum([]byte("abc"))
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ts, err := types.ParseTimestamp(&stmtctx.StatementContext{TimeZone: time.UTC},
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"2016-06-23 11:30:45")
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c.Assert(err, IsNil)
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row[2] = types.NewDatum(ts)
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du, err := types.ParseDuration(nil, "12:59:59.999999", 6)
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c.Assert(err, IsNil)
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row[3] = types.NewDatum(du)
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// Encode
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colIDs := make([]int64, 0, colLen)
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for _, col := range cols {
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colIDs = append(colIDs, col.id)
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}
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rd := rowcodec.Encoder{Enable: true}
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sc := &stmtctx.StatementContext{TimeZone: time.UTC}
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bs, err := EncodeRow(sc, row, colIDs, nil, nil, &rd)
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c.Assert(err, IsNil)
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c.Assert(bs, NotNil)
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// Decode
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colMap := make(map[int64]*types.FieldType, colLen)
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for _, col := range cols {
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colMap[col.id] = col.tp
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}
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r, err := DecodeRow(bs, colMap, time.UTC)
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c.Assert(err, IsNil)
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c.Assert(r, NotNil)
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c.Assert(r, HasLen, colLen)
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// Compare decoded row and original row
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for i, col := range cols {
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v, ok := r[col.id]
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c.Assert(ok, IsTrue)
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equal, err1 := v.CompareDatum(sc, &row[i])
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c.Assert(err1, IsNil)
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c.Assert(equal, Equals, 0)
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}
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}
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func (s *testTableCodecSuite) TestCutRow(c *C) {
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defer testleak.AfterTest(c)()
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var err error
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c1 := &column{id: 1, tp: types.NewFieldType(mysql.TypeLonglong)}
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c2 := &column{id: 2, tp: types.NewFieldType(mysql.TypeVarchar)}
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c3 := &column{id: 3, tp: types.NewFieldType(mysql.TypeNewDecimal)}
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cols := []*column{c1, c2, c3}
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row := make([]types.Datum, 3)
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row[0] = types.NewIntDatum(100)
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row[1] = types.NewBytesDatum([]byte("abc"))
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row[2] = types.NewDecimalDatum(types.NewDecFromInt(1))
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sc := &stmtctx.StatementContext{TimeZone: time.UTC}
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data := make([][]byte, 3)
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data[0], err = EncodeValue(sc, nil, row[0])
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c.Assert(err, IsNil)
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data[1], err = EncodeValue(sc, nil, row[1])
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c.Assert(err, IsNil)
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data[2], err = EncodeValue(sc, nil, row[2])
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c.Assert(err, IsNil)
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// Encode
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colIDs := make([]int64, 0, 3)
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for _, col := range cols {
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colIDs = append(colIDs, col.id)
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}
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bs, err := EncodeOldRow(sc, row, colIDs, nil, nil)
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c.Assert(err, IsNil)
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c.Assert(bs, NotNil)
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// Decode
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colMap := make(map[int64]int, 3)
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for i, col := range cols {
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colMap[col.id] = i
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}
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r, err := CutRowNew(bs, colMap)
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c.Assert(err, IsNil)
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c.Assert(r, NotNil)
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c.Assert(r, HasLen, 3)
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// Compare cut row and original row
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for i := range colIDs {
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c.Assert(r[i], DeepEquals, data[i])
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}
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}
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func (s *testTableCodecSuite) TestCutKeyNew(c *C) {
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values := []types.Datum{types.NewIntDatum(1), types.NewBytesDatum([]byte("abc")), types.NewFloat64Datum(5.5)}
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handle := types.NewIntDatum(100)
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values = append(values, handle)
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sc := &stmtctx.StatementContext{TimeZone: time.UTC}
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encodedValue, err := codec.EncodeKey(sc, nil, values...)
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c.Assert(err, IsNil)
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tableID := int64(4)
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indexID := int64(5)
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indexKey := EncodeIndexSeekKey(tableID, indexID, encodedValue)
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valuesBytes, handleBytes, err := CutIndexKeyNew(indexKey, 3)
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c.Assert(err, IsNil)
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for i := 0; i < 3; i++ {
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valueBytes := valuesBytes[i]
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var val types.Datum
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_, val, _ = codec.DecodeOne(valueBytes)
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c.Assert(val, DeepEquals, values[i])
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}
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_, handleVal, _ := codec.DecodeOne(handleBytes)
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c.Assert(handleVal, DeepEquals, types.NewIntDatum(100))
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}
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func (s *testTableCodecSuite) TestCutKey(c *C) {
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colIDs := []int64{1, 2, 3}
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values := []types.Datum{types.NewIntDatum(1), types.NewBytesDatum([]byte("abc")), types.NewFloat64Datum(5.5)}
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handle := types.NewIntDatum(100)
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values = append(values, handle)
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sc := &stmtctx.StatementContext{TimeZone: time.UTC}
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encodedValue, err := codec.EncodeKey(sc, nil, values...)
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c.Assert(err, IsNil)
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tableID := int64(4)
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indexID := int64(5)
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indexKey := EncodeIndexSeekKey(tableID, indexID, encodedValue)
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valuesMap, handleBytes, err := CutIndexKey(indexKey, colIDs)
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c.Assert(err, IsNil)
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for i, colID := range colIDs {
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valueBytes := valuesMap[colID]
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var val types.Datum
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_, val, _ = codec.DecodeOne(valueBytes)
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c.Assert(val, DeepEquals, values[i])
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}
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_, handleVal, _ := codec.DecodeOne(handleBytes)
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c.Assert(handleVal, DeepEquals, types.NewIntDatum(100))
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}
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func (s *testTableCodecSuite) TestDecodeBadDecical(c *C) {
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c.Assert(failpoint.Enable("github.com/pingcap/tidb/util/codec/errorInDecodeDecimal", `return(true)`), IsNil)
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defer func() {
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c.Assert(failpoint.Disable("github.com/pingcap/tidb/util/codec/errorInDecodeDecimal"), IsNil)
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}()
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dec := types.NewDecFromStringForTest("0.111")
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b, err := codec.EncodeDecimal(nil, dec, 0, 0)
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c.Assert(err, IsNil)
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// Expect no panic.
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_, _, err = codec.DecodeOne(b)
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c.Assert(err, NotNil)
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}
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func (s *testTableCodecSuite) TestIndexKey(c *C) {
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tableID := int64(4)
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indexID := int64(5)
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indexKey := EncodeIndexSeekKey(tableID, indexID, []byte{})
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tTableID, tIndexID, isRecordKey, err := DecodeKeyHead(indexKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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c.Assert(tIndexID, Equals, indexID)
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c.Assert(isRecordKey, IsFalse)
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}
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func (s *testTableCodecSuite) TestRecordKey(c *C) {
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tableID := int64(55)
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tableKey := EncodeRowKeyWithHandle(tableID, math.MaxUint32)
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tTableID, _, isRecordKey, err := DecodeKeyHead(tableKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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c.Assert(isRecordKey, IsTrue)
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encodedHandle := codec.EncodeInt(nil, math.MaxUint32)
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rowKey := EncodeRowKey(tableID, encodedHandle)
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c.Assert([]byte(tableKey), BytesEquals, []byte(rowKey))
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tTableID, handle, err := DecodeRecordKey(rowKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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c.Assert(handle, Equals, int64(math.MaxUint32))
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recordPrefix := GenTableRecordPrefix(tableID)
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rowKey = EncodeRecordKey(recordPrefix, math.MaxUint32)
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c.Assert([]byte(tableKey), BytesEquals, []byte(rowKey))
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_, _, err = DecodeRecordKey(nil)
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c.Assert(err, NotNil)
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_, _, err = DecodeRecordKey([]byte("abcdefghijklmnopqrstuvwxyz"))
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c.Assert(err, NotNil)
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c.Assert(DecodeTableID(nil), Equals, int64(0))
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}
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func (s *testTableCodecSuite) TestPrefix(c *C) {
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const tableID int64 = 66
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key := EncodeTablePrefix(tableID)
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tTableID := DecodeTableID(key)
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c.Assert(tTableID, Equals, int64(tableID))
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c.Assert([]byte(TablePrefix()), BytesEquals, tablePrefix)
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tablePrefix1 := GenTablePrefix(tableID)
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c.Assert([]byte(tablePrefix1), BytesEquals, []byte(key))
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indexPrefix := EncodeTableIndexPrefix(tableID, math.MaxUint32)
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tTableID, indexID, isRecordKey, err := DecodeKeyHead(indexPrefix)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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c.Assert(indexID, Equals, int64(math.MaxUint32))
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c.Assert(isRecordKey, IsFalse)
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prefixKey := GenTableIndexPrefix(tableID)
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c.Assert(DecodeTableID(prefixKey), Equals, tableID)
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c.Assert(TruncateToRowKeyLen(append(indexPrefix, "xyz"...)), HasLen, RecordRowKeyLen)
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c.Assert(TruncateToRowKeyLen(key), HasLen, len(key))
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}
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func (s *testTableCodecSuite) TestReplaceRecordKeyTableID(c *C) {
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tableID := int64(1)
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tableKey := EncodeRowKeyWithHandle(tableID, 1)
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tTableID, _, _, err := DecodeKeyHead(tableKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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tableID = 2
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tableKey = ReplaceRecordKeyTableID(tableKey, tableID)
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tTableID, _, _, err = DecodeKeyHead(tableKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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tableID = 3
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ReplaceRecordKeyTableID(tableKey, tableID)
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tableKey = ReplaceRecordKeyTableID(tableKey, tableID)
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tTableID, _, _, err = DecodeKeyHead(tableKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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tableID = -1
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tableKey = ReplaceRecordKeyTableID(tableKey, tableID)
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tTableID, _, _, err = DecodeKeyHead(tableKey)
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c.Assert(err, IsNil)
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c.Assert(tTableID, Equals, tableID)
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}
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func (s *testTableCodecSuite) TestDecodeIndexKey(c *C) {
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tableID := int64(4)
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indexID := int64(5)
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values := []types.Datum{
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types.NewIntDatum(1),
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types.NewBytesDatum([]byte("abc")),
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types.NewFloat64Datum(123.45),
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// MysqlTime is not supported.
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// types.NewTimeDatum(types.Time{
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// Time: types.FromGoTime(time.Now()),
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// Fsp: 6,
|
|
// Type: mysql.TypeTimestamp,
|
|
// }),
|
|
}
|
|
valueStrs := make([]string, 0, len(values))
|
|
for _, v := range values {
|
|
str, err := v.ToString()
|
|
if err != nil {
|
|
str = fmt.Sprintf("%d-%v", v.Kind(), v.GetValue())
|
|
}
|
|
valueStrs = append(valueStrs, str)
|
|
}
|
|
sc := &stmtctx.StatementContext{TimeZone: time.UTC}
|
|
encodedValue, err := codec.EncodeKey(sc, nil, values...)
|
|
c.Assert(err, IsNil)
|
|
indexKey := EncodeIndexSeekKey(tableID, indexID, encodedValue)
|
|
|
|
decodeTableID, decodeIndexID, decodeValues, err := DecodeIndexKey(indexKey)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(decodeTableID, Equals, tableID)
|
|
c.Assert(decodeIndexID, Equals, indexID)
|
|
c.Assert(decodeValues, DeepEquals, valueStrs)
|
|
}
|
|
|
|
func (s *testTableCodecSuite) TestCutPrefix(c *C) {
|
|
key := EncodeTableIndexPrefix(42, 666)
|
|
res := CutRowKeyPrefix(key)
|
|
c.Assert(res, BytesEquals, []byte{0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x9a})
|
|
res = CutIndexPrefix(key)
|
|
c.Assert(res, BytesEquals, []byte{})
|
|
}
|
|
|
|
func (s *testTableCodecSuite) TestRange(c *C) {
|
|
s1, e1 := GetTableHandleKeyRange(22)
|
|
s2, e2 := GetTableHandleKeyRange(23)
|
|
c.Assert([]byte(s1), Less, []byte(e1))
|
|
c.Assert([]byte(e1), Less, []byte(s2))
|
|
c.Assert([]byte(s2), Less, []byte(e2))
|
|
|
|
s1, e1 = GetTableIndexKeyRange(42, 666)
|
|
s2, e2 = GetTableIndexKeyRange(42, 667)
|
|
c.Assert([]byte(s1), Less, []byte(e1))
|
|
c.Assert([]byte(e1), Less, []byte(s2))
|
|
c.Assert([]byte(s2), Less, []byte(e2))
|
|
}
|
|
|
|
func (s *testTableCodecSuite) TestDecodeAutoIDMeta(c *C) {
|
|
keyBytes := []byte{0x6d, 0x44, 0x42, 0x3a, 0x35, 0x36, 0x0, 0x0, 0x0, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x68, 0x54, 0x49, 0x44, 0x3a, 0x31, 0x30, 0x38, 0x0, 0xfe}
|
|
key, field, err := DecodeMetaKey(kv.Key(keyBytes))
|
|
c.Assert(err, IsNil)
|
|
c.Assert(string(key), Equals, "DB:56")
|
|
c.Assert(string(field), Equals, "TID:108")
|
|
}
|
|
|
|
func BenchmarkHasTablePrefix(b *testing.B) {
|
|
k := kv.Key("foobar")
|
|
for i := 0; i < b.N; i++ {
|
|
hasTablePrefix(k)
|
|
}
|
|
}
|
|
|
|
func BenchmarkHasTablePrefixBuiltin(b *testing.B) {
|
|
k := kv.Key("foobar")
|
|
for i := 0; i < b.N; i++ {
|
|
k.HasPrefix(tablePrefix)
|
|
}
|
|
}
|
|
|
|
// Bench result:
|
|
// BenchmarkEncodeValue 5000000 368 ns/op
|
|
func BenchmarkEncodeValue(b *testing.B) {
|
|
row := make([]types.Datum, 7)
|
|
row[0] = types.NewIntDatum(100)
|
|
row[1] = types.NewBytesDatum([]byte("abc"))
|
|
row[2] = types.NewDecimalDatum(types.NewDecFromInt(1))
|
|
row[3] = types.NewMysqlEnumDatum(types.Enum{Name: "a", Value: 0})
|
|
row[4] = types.NewDatum(types.Set{Name: "a", Value: 0})
|
|
row[5] = types.NewDatum(types.BinaryLiteral{100})
|
|
row[6] = types.NewFloat32Datum(1.5)
|
|
b.ResetTimer()
|
|
encodedCol := make([]byte, 0, 16)
|
|
for i := 0; i < b.N; i++ {
|
|
for _, d := range row {
|
|
encodedCol = encodedCol[:0]
|
|
EncodeValue(nil, encodedCol, d)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *testTableCodecSuite) TestError(c *C) {
|
|
kvErrs := []*terror.Error{
|
|
errInvalidKey,
|
|
errInvalidRecordKey,
|
|
errInvalidIndexKey,
|
|
}
|
|
for _, err := range kvErrs {
|
|
code := terror.ToSQLError(err).Code
|
|
c.Assert(code != mysql.ErrUnknown && code == uint16(err.Code()), IsTrue, Commentf("err: %v", err))
|
|
}
|
|
}
|
|
|