232 lines
8.3 KiB
Go
232 lines
8.3 KiB
Go
// Copyright 2021 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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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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 keydecoder
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import (
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"testing"
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"github.com/pingcap/tidb/pkg/infoschema"
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"github.com/pingcap/tidb/pkg/parser/model"
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_ "github.com/pingcap/tidb/pkg/planner/core"
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"github.com/pingcap/tidb/pkg/sessionctx/stmtctx"
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"github.com/pingcap/tidb/pkg/table"
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"github.com/pingcap/tidb/pkg/table/tables"
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"github.com/pingcap/tidb/pkg/testkit/testutil"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/codec"
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"github.com/stretchr/testify/assert"
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"go.opencensus.io/stats/view"
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)
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func TestDecodeKey(t *testing.T) {
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defer view.Stop()
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table.MockTableFromMeta = tables.MockTableFromMeta
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tableInfo1 := &model.TableInfo{
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ID: 1,
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Name: model.NewCIStr("table1"),
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Indices: []*model.IndexInfo{
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{ID: 1, Name: model.NewCIStr("index1"), State: model.StatePublic},
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},
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}
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tableInfo2 := &model.TableInfo{ID: 2, Name: model.NewCIStr("table2")}
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tableInfo3 := &model.TableInfo{
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ID: 3,
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Name: model.NewCIStr("table3"),
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Columns: []*model.ColumnInfo{
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{ID: 10, Name: model.NewCIStr("col"), State: model.StatePublic},
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},
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Indices: []*model.IndexInfo{
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{ID: 4, Name: model.NewCIStr("index4"), State: model.StatePublic},
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},
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Partition: &model.PartitionInfo{
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Type: model.PartitionTypeRange,
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Expr: "`col`",
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Enable: true,
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Definitions: []model.PartitionDefinition{
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{ID: 5, Name: model.NewCIStr("p0"), LessThan: []string{"10"}},
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{ID: 6, Name: model.NewCIStr("p1"), LessThan: []string{"MAXVALUE"}},
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},
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},
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}
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stubTableInfos := []*model.TableInfo{tableInfo1, tableInfo2, tableInfo3}
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stubInfoschema := infoschema.MockInfoSchema(stubTableInfos)
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decodedKey, err := DecodeKey([]byte{
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't',
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// table id = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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'_',
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'r',
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// int handle, value = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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}, stubInfoschema)
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assert.Nil(t, err)
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "test", decodedKey.DbName)
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assert.Equal(t, int64(1), decodedKey.TableID)
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assert.Equal(t, "table1", decodedKey.TableName)
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assert.Equal(t, int64(0), decodedKey.PartitionID)
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assert.Equal(t, "", decodedKey.PartitionName)
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assert.Equal(t, IntHandle, decodedKey.HandleType)
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assert.False(t, decodedKey.IsPartitionHandle)
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assert.Equal(t, "1", decodedKey.HandleValue)
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// These are default values, ie. will be omitted when got marshaled into json
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assert.Equal(t, int64(0), decodedKey.IndexID)
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assert.Equal(t, "", decodedKey.IndexName)
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assert.Nil(t, decodedKey.IndexValues)
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ch := testutil.MustNewCommonHandle(t, 100, "abc")
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encodedCommonKey := ch.Encoded()
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key := []byte{
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't',
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// table id = 2
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
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'_',
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'r',
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}
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key = append(key, encodedCommonKey...)
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.Nil(t, err)
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "test", decodedKey.DbName)
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assert.Equal(t, int64(2), decodedKey.TableID)
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assert.Equal(t, "table2", decodedKey.TableName)
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assert.Equal(t, int64(0), decodedKey.PartitionID)
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assert.Equal(t, "", decodedKey.PartitionName)
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assert.Equal(t, CommonHandle, decodedKey.HandleType)
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assert.False(t, decodedKey.IsPartitionHandle)
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assert.Equal(t, "{100, abc}", decodedKey.HandleValue)
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// These are default values, ie. will be omitted when got marshaled into json
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assert.Equal(t, int64(0), decodedKey.IndexID)
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assert.Equal(t, "", decodedKey.IndexName)
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assert.Nil(t, decodedKey.IndexValues)
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values := types.MakeDatums("abc", 1)
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sc := stmtctx.NewStmtCtx()
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encodedValue, err := codec.EncodeKey(sc.TimeZone(), nil, values...)
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assert.Nil(t, err)
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key = []byte{
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't',
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// table id = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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'_',
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'i',
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// index id = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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}
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key = append(key, encodedValue...)
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.Nil(t, err)
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "test", decodedKey.DbName)
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assert.Equal(t, int64(1), decodedKey.TableID)
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assert.Equal(t, "table1", decodedKey.TableName)
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assert.Equal(t, int64(0), decodedKey.PartitionID)
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assert.Equal(t, "", decodedKey.PartitionName)
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assert.Equal(t, int64(1), decodedKey.IndexID)
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assert.Equal(t, "index1", decodedKey.IndexName)
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assert.Equal(t, []string{"abc", "1"}, decodedKey.IndexValues)
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// These are default values, ie. will be omitted when got marshaled into json
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assert.Equal(t, HandleType(""), decodedKey.HandleType)
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assert.Equal(t, "", decodedKey.HandleValue)
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assert.False(t, decodedKey.IsPartitionHandle)
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// Row key in a partitioned table.
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key = []byte("t\x80\x00\x00\x00\x00\x00\x00\x05_r\x80\x00\x00\x00\x00\x00\x00\x0a")
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.Nil(t, err)
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "test", decodedKey.DbName)
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assert.Equal(t, int64(3), decodedKey.TableID)
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assert.Equal(t, "table3", decodedKey.TableName)
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assert.Equal(t, int64(5), decodedKey.PartitionID)
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assert.Equal(t, "p0", decodedKey.PartitionName)
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assert.Equal(t, IntHandle, decodedKey.HandleType)
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assert.Equal(t, "10", decodedKey.HandleValue)
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// These are default values, ie. will be omitted when got marshaled into json
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assert.Equal(t, int64(0), decodedKey.IndexID)
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assert.Equal(t, "", decodedKey.IndexName)
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assert.Nil(t, decodedKey.IndexValues)
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assert.False(t, decodedKey.IsPartitionHandle)
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// Index key in a partitioned table.
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values = types.MakeDatums("abcde", 2)
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encodedValue, err = codec.EncodeKey(sc.TimeZone(), nil, values...)
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assert.Nil(t, err)
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key = []byte("t\x80\x00\x00\x00\x00\x00\x00\x06_i\x80\x00\x00\x00\x00\x00\x00\x04")
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key = append(key, encodedValue...)
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.Nil(t, err)
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "test", decodedKey.DbName)
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assert.Equal(t, int64(3), decodedKey.TableID)
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assert.Equal(t, "table3", decodedKey.TableName)
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assert.Equal(t, int64(6), decodedKey.PartitionID)
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assert.Equal(t, "p1", decodedKey.PartitionName)
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assert.Equal(t, int64(4), decodedKey.IndexID)
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assert.Equal(t, "index4", decodedKey.IndexName)
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assert.Equal(t, []string{"abcde", "2"}, decodedKey.IndexValues)
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// These are default values, ie. will be omitted when got marshaled into json
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assert.Equal(t, HandleType(""), decodedKey.HandleType)
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assert.Equal(t, "", decodedKey.HandleValue)
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assert.False(t, decodedKey.IsPartitionHandle)
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// Totally invalid key
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key = []byte("this-is-a-totally-invalidkey")
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.NotNil(t, err)
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// "partly" invalid key, i.e. neither record nor index
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key = []byte{
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't',
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// table id = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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}
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key = append(key, []byte("rest-part-is-invalid")...)
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decodedKey, err = DecodeKey(key, stubInfoschema)
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assert.NotNil(t, err)
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// Table cannot be found in infoschema
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// This is possible when the schema have changed since when the key is get.
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decodedKey, err = DecodeKey([]byte{
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't',
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// table id = 3
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
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'_',
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'r',
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// int handle, value = 1
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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}, stubInfoschema)
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// We should get as much information as we can
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assert.Nil(t, err)
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assert.Equal(t, int64(4), decodedKey.TableID)
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assert.Equal(t, IntHandle, decodedKey.HandleType)
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assert.Equal(t, "1", decodedKey.HandleValue)
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// Rest information are all default value, ie. omitted when got marshaled into json
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assert.Equal(t, int64(0), decodedKey.DbID)
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assert.Equal(t, "", decodedKey.DbName)
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assert.Equal(t, "", decodedKey.TableName)
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assert.Equal(t, int64(0), decodedKey.PartitionID)
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assert.Equal(t, "", decodedKey.PartitionName)
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assert.Equal(t, int64(0), decodedKey.IndexID)
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assert.Equal(t, "", decodedKey.IndexName)
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assert.False(t, decodedKey.IsPartitionHandle)
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assert.Nil(t, decodedKey.IndexValues)
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}
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