600 lines
15 KiB
Go
600 lines
15 KiB
Go
// Copyright 2015 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 meta_test
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import (
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"context"
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"fmt"
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"strconv"
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"testing"
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"time"
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"github.com/pingcap/errors"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/meta"
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"github.com/pingcap/tidb/parser/model"
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"github.com/pingcap/tidb/store/mockstore"
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"github.com/pingcap/tidb/util"
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"github.com/stretchr/testify/require"
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)
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func TestPlacementPolicy(t *testing.T) {
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store, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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txn, err := store.Begin()
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require.NoError(t, err)
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// test the independent policy ID allocation.
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m := meta.NewMeta(txn)
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// test the meta storage of placemnt policy.
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policy := &model.PolicyInfo{
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ID: 1,
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Name: model.NewCIStr("aa"),
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PlacementSettings: &model.PlacementSettings{
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PrimaryRegion: "my primary",
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Regions: "my regions",
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Learners: 1,
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Followers: 2,
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Voters: 3,
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Schedule: "even",
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Constraints: "+disk=ssd",
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LearnerConstraints: "+zone=shanghai",
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},
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}
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err = m.CreatePolicy(policy)
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require.NoError(t, err)
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require.Equal(t, policy.ID, int64(1))
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err = m.CreatePolicy(policy)
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require.NotNil(t, err)
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require.True(t, meta.ErrPolicyExists.Equal(err))
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val, err := m.GetPolicy(1)
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require.NoError(t, err)
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require.Equal(t, policy, val)
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// mock updating the placement policy.
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policy.Name = model.NewCIStr("bb")
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policy.LearnerConstraints = "+zone=nanjing"
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err = m.UpdatePolicy(policy)
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require.NoError(t, err)
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val, err = m.GetPolicy(1)
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require.NoError(t, err)
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require.Equal(t, policy, val)
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ps, err := m.ListPolicies()
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require.NoError(t, err)
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require.Equal(t, []*model.PolicyInfo{policy}, ps)
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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// fetch the stored value after committing.
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txn, err = store.Begin()
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require.NoError(t, err)
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m = meta.NewMeta(txn)
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val, err = m.GetPolicy(1)
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require.NoError(t, err)
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require.Equal(t, policy, val)
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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}
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func TestBackupAndRestoreAutoIDs(t *testing.T) {
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store, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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txn, err := store.Begin()
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require.NoError(t, err)
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m := meta.NewMeta(txn)
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acc := m.GetAutoIDAccessors(1, 1)
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require.NoError(t, acc.RowID().Put(100))
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require.NoError(t, acc.RandomID().Put(101))
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require.NoError(t, meta.BackupAndRestoreAutoIDs(m, 1, 1, 2, 2))
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require.NoError(t, txn.Commit(context.Background()))
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mustGet := func(acc meta.AutoIDAccessor) int {
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v, err := acc.Get()
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require.NoError(t, err)
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return int(v)
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}
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txn, err = store.Begin()
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require.NoError(t, err)
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m = meta.NewMeta(txn)
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acc = m.GetAutoIDAccessors(1, 1)
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// Test old auto IDs are cleaned.
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require.Equal(t, mustGet(acc.RowID()), 0)
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require.Equal(t, mustGet(acc.RandomID()), 0)
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// Test new auto IDs are restored.
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acc2 := m.GetAutoIDAccessors(2, 2)
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require.Equal(t, mustGet(acc2.RowID()), 100)
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require.Equal(t, mustGet(acc2.RandomID()), 101)
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// Backup & restore with the same database & table ID.
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require.NoError(t, meta.BackupAndRestoreAutoIDs(m, 2, 2, 2, 2))
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require.NoError(t, txn.Commit(context.Background()))
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txn, err = store.Begin()
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require.NoError(t, err)
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m = meta.NewMeta(txn)
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// Test auto IDs are unchanged.
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acc2 = m.GetAutoIDAccessors(2, 2)
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require.Equal(t, mustGet(acc2.RowID()), 100)
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require.Equal(t, mustGet(acc2.RandomID()), 101)
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}
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func TestMeta(t *testing.T) {
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store, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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txn, err := store.Begin()
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require.NoError(t, err)
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m := meta.NewMeta(txn)
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n, err := m.GenGlobalID()
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require.NoError(t, err)
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require.Equal(t, int64(1), n)
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n, err = m.GetGlobalID()
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require.NoError(t, err)
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require.Equal(t, int64(1), n)
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var wg util.WaitGroupWrapper
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wg.Run(func() {
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ids, err := m.GenGlobalIDs(3)
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require.NoError(t, err)
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anyMatch(t, ids, []int64{2, 3, 4}, []int64{6, 7, 8})
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})
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wg.Run(func() {
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ids, err := m.GenGlobalIDs(4)
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require.NoError(t, err)
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anyMatch(t, ids, []int64{5, 6, 7, 8}, []int64{2, 3, 4, 5})
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})
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wg.Wait()
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n, err = m.GetSchemaVersion()
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require.NoError(t, err)
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require.Equal(t, int64(0), n)
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n, err = m.GenSchemaVersion()
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require.NoError(t, err)
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require.Equal(t, int64(1), n)
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n, err = m.GetSchemaVersion()
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require.NoError(t, err)
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require.Equal(t, int64(1), n)
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dbInfo := &model.DBInfo{
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ID: 1,
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Name: model.NewCIStr("a"),
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}
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err = m.CreateDatabase(dbInfo)
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require.NoError(t, err)
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err = m.CreateDatabase(dbInfo)
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require.NotNil(t, err)
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require.True(t, meta.ErrDBExists.Equal(err))
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v, err := m.GetDatabase(1)
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require.NoError(t, err)
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require.Equal(t, dbInfo, v)
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dbInfo.Name = model.NewCIStr("aa")
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err = m.UpdateDatabase(dbInfo)
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require.NoError(t, err)
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v, err = m.GetDatabase(1)
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require.NoError(t, err)
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require.Equal(t, dbInfo, v)
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dbs, err := m.ListDatabases()
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require.NoError(t, err)
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require.Equal(t, []*model.DBInfo{dbInfo}, dbs)
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tbInfo := &model.TableInfo{
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ID: 1,
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Name: model.NewCIStr("t"),
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}
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err = m.CreateTableOrView(1, tbInfo)
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require.NoError(t, err)
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n, err = m.GetAutoIDAccessors(1, 1).RowID().Inc(10)
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require.NoError(t, err)
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require.Equal(t, int64(10), n)
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n, err = m.GetAutoIDAccessors(1, 1).RowID().Get()
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require.NoError(t, err)
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require.Equal(t, int64(10), n)
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err = m.CreateTableOrView(1, tbInfo)
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require.NotNil(t, err)
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require.True(t, meta.ErrTableExists.Equal(err))
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tbInfo.Name = model.NewCIStr("tt")
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err = m.UpdateTable(1, tbInfo)
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require.NoError(t, err)
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table, err := m.GetTable(1, 1)
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require.NoError(t, err)
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require.Equal(t, tbInfo, table)
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tblExist, err := m.CheckTableExists(1, 1)
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require.NoError(t, err)
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require.Equal(t, true, tblExist)
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table, err = m.GetTable(1, 2)
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require.NoError(t, err)
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require.Nil(t, table)
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tblExist, err = m.CheckTableExists(1, 2)
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require.NoError(t, err)
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require.Equal(t, false, tblExist)
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tbInfo2 := &model.TableInfo{
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ID: 2,
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Name: model.NewCIStr("bb"),
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}
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err = m.CreateTableOrView(1, tbInfo2)
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require.NoError(t, err)
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tables, err := m.ListTables(1)
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require.NoError(t, err)
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require.Equal(t, []*model.TableInfo{tbInfo, tbInfo2}, tables)
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// Generate an auto id.
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n, err = m.GetAutoIDAccessors(1, 2).RowID().Inc(10)
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require.NoError(t, err)
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require.Equal(t, int64(10), n)
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// Make sure the auto id key-value entry is there.
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n, err = m.GetAutoIDAccessors(1, 2).RowID().Get()
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require.NoError(t, err)
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require.Equal(t, int64(10), n)
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err = m.DropTableOrView(1, tbInfo2.ID)
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require.NoError(t, err)
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err = m.GetAutoIDAccessors(1, tbInfo2.ID).Del()
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require.NoError(t, err)
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// Make sure auto id key-value entry is gone.
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n, err = m.GetAutoIDAccessors(1, 2).RowID().Get()
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require.NoError(t, err)
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require.Equal(t, int64(0), n)
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tables, err = m.ListTables(1)
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require.NoError(t, err)
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require.Equal(t, []*model.TableInfo{tbInfo}, tables)
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// Test case for drop a table without delete auto id key-value entry.
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tid := int64(100)
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tbInfo100 := &model.TableInfo{
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ID: tid,
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Name: model.NewCIStr("t_rename"),
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}
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// Create table.
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err = m.CreateTableOrView(1, tbInfo100)
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require.NoError(t, err)
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// Update auto ID.
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currentDBID := int64(1)
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n, err = m.GetAutoIDAccessors(currentDBID, tid).RowID().Inc(10)
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require.NoError(t, err)
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require.Equal(t, int64(10), n)
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// Fail to update auto ID.
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// The table ID doesn't exist.
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nonExistentID := int64(1234)
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_, err = m.GetAutoIDAccessors(currentDBID, nonExistentID).RowID().Inc(10)
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require.NotNil(t, err)
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require.True(t, meta.ErrTableNotExists.Equal(err))
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// Fail to update auto ID.
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// The current database ID doesn't exist.
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currentDBID = nonExistentID
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_, err = m.GetAutoIDAccessors(currentDBID, tid).RowID().Inc(10)
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require.NotNil(t, err)
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require.True(t, meta.ErrDBNotExists.Equal(err))
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// Test case for CreateTableAndSetAutoID.
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tbInfo3 := &model.TableInfo{
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ID: 3,
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Name: model.NewCIStr("tbl3"),
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}
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err = m.CreateTableAndSetAutoID(1, tbInfo3, 123, 0)
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require.NoError(t, err)
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id, err := m.GetAutoIDAccessors(1, tbInfo3.ID).RowID().Get()
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require.NoError(t, err)
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require.Equal(t, int64(123), id)
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// Test case for GenAutoTableIDKeyValue.
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key, val := m.GenAutoTableIDKeyValue(1, tbInfo3.ID, 1234)
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require.Equal(t, []byte(strconv.FormatInt(1234, 10)), val)
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require.Equal(t, []byte{0x6d, 0x44, 0x42, 0x3a, 0x31, 0x0, 0x0, 0x0, 0x0, 0xfb, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x68, 0x54, 0x49, 0x44, 0x3a, 0x33, 0x0, 0x0, 0x0, 0xfc}, key)
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err = m.DropDatabase(1)
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require.NoError(t, err)
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err = m.DropDatabase(currentDBID)
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require.NoError(t, err)
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dbs, err = m.ListDatabases()
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require.NoError(t, err)
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require.Len(t, dbs, 0)
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bootstrapVer, err := m.GetBootstrapVersion()
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require.NoError(t, err)
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require.Equal(t, int64(0), bootstrapVer)
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err = m.FinishBootstrap(int64(1))
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require.NoError(t, err)
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bootstrapVer, err = m.GetBootstrapVersion()
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require.NoError(t, err)
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require.Equal(t, int64(1), bootstrapVer)
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// Test case for meta.FinishBootstrap with a version.
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err = m.FinishBootstrap(int64(10))
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require.NoError(t, err)
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bootstrapVer, err = m.GetBootstrapVersion()
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require.NoError(t, err)
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require.Equal(t, int64(10), bootstrapVer)
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// Test case for SchemaDiff.
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schemaDiff := &model.SchemaDiff{
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Version: 100,
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SchemaID: 1,
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Type: model.ActionTruncateTable,
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TableID: 2,
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OldTableID: 3,
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}
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err = m.SetSchemaDiff(schemaDiff)
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require.NoError(t, err)
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readDiff, err := m.GetSchemaDiff(schemaDiff.Version)
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require.NoError(t, err)
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require.Equal(t, schemaDiff, readDiff)
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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// Test for DDLJobHistoryKey.
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key = meta.DDLJobHistoryKey(m, 888)
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require.Equal(t, []byte{0x6d, 0x44, 0x44, 0x4c, 0x4a, 0x6f, 0x62, 0x48, 0x69, 0xff, 0x73, 0x74, 0x6f, 0x72, 0x79, 0x0, 0x0, 0x0, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x68, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x78, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf7}, key)
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}
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func TestSnapshot(t *testing.T) {
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store, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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txn, _ := store.Begin()
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m := meta.NewMeta(txn)
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_, err = m.GenGlobalID()
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require.NoError(t, err)
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n, _ := m.GetGlobalID()
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require.Equal(t, int64(1), n)
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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ver1, _ := store.CurrentVersion(kv.GlobalTxnScope)
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time.Sleep(time.Millisecond)
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txn, _ = store.Begin()
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m = meta.NewMeta(txn)
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_, err = m.GenGlobalID()
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require.NoError(t, err)
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n, _ = m.GetGlobalID()
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require.Equal(t, int64(2), n)
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err = txn.Commit(context.Background())
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require.NoError(t, err)
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snapshot := store.GetSnapshot(ver1)
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snapMeta := meta.NewSnapshotMeta(snapshot)
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n, _ = snapMeta.GetGlobalID()
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require.Equal(t, int64(1), n)
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_, err = snapMeta.GenGlobalID()
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require.NotNil(t, err)
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require.Equal(t, "[structure:8220]write on snapshot", err.Error())
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}
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func TestElement(t *testing.T) {
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checkElement := func(key []byte, resErr error) {
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e := &meta.Element{ID: 123, TypeKey: key}
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eBytes := e.EncodeElement()
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resE, err := meta.DecodeElement(eBytes)
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if resErr == nil {
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require.NoError(t, err)
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require.Equal(t, resE, e)
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} else {
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require.EqualError(t, err, resErr.Error())
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}
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}
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key := []byte("_col")
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checkElement(key, errors.Errorf(`invalid encoded element key prefix "_col\x00"`))
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checkElement(meta.IndexElementKey, nil)
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checkElement(meta.ColumnElementKey, nil)
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key = []byte("inexistent")
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checkElement(key, errors.Errorf("invalid encoded element key prefix %q", key[:5]))
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_, err := meta.DecodeElement([]byte("_col"))
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require.EqualError(t, err, `invalid encoded element "_col" length 4`)
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_, err = meta.DecodeElement(meta.ColumnElementKey)
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require.EqualError(t, err, `invalid encoded element "_col_" length 5`)
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}
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func BenchmarkGenGlobalIDs(b *testing.B) {
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store, err := mockstore.NewMockStore()
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require.NoError(b, err)
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defer func() {
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err := store.Close()
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require.NoError(b, err)
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}()
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txn, err := store.Begin()
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require.NoError(b, err)
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defer func() {
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err := txn.Rollback()
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require.NoError(b, err)
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}()
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m := meta.NewMeta(txn)
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b.ResetTimer()
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var ids []int64
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for i := 0; i < b.N; i++ {
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ids, _ = m.GenGlobalIDs(10)
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}
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require.Len(b, ids, 10)
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require.Equal(b, int64(b.N)*10, ids[9])
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}
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func BenchmarkGenGlobalIDOneByOne(b *testing.B) {
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store, err := mockstore.NewMockStore()
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require.NoError(b, err)
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defer func() {
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err := store.Close()
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|
require.NoError(b, err)
|
|
}()
|
|
|
|
txn, err := store.Begin()
|
|
require.NoError(b, err)
|
|
defer func() {
|
|
err := txn.Rollback()
|
|
require.NoError(b, err)
|
|
}()
|
|
|
|
m := meta.NewMeta(txn)
|
|
|
|
b.ResetTimer()
|
|
var id int64
|
|
for i := 0; i < b.N; i++ {
|
|
for j := 0; j < 10; j++ {
|
|
id, _ = m.GenGlobalID()
|
|
}
|
|
}
|
|
require.Equal(b, int64(b.N)*10, id)
|
|
}
|
|
|
|
func anyMatch(t *testing.T, ids []int64, candidates ...[]int64) {
|
|
comment := fmt.Sprintf("ids %v cannot match any of %v", ids, candidates)
|
|
|
|
for _, candidate := range candidates {
|
|
if match(ids, candidate) {
|
|
return
|
|
}
|
|
}
|
|
|
|
require.FailNow(t, comment)
|
|
}
|
|
|
|
func match(ids, candidate []int64) bool {
|
|
if len(ids) != len(candidate) {
|
|
return false
|
|
}
|
|
|
|
for i, v := range candidate {
|
|
if ids[i] != v {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func TestDBKey(b *testing.T) {
|
|
var dbID int64 = 10
|
|
dbKey := meta.DBkey(dbID)
|
|
require.True(b, meta.IsDBkey(dbKey))
|
|
|
|
parseID, err := meta.ParseDBKey(dbKey)
|
|
require.NoError(b, err)
|
|
require.Equal(b, dbID, parseID)
|
|
}
|
|
|
|
func TestTableKey(b *testing.T) {
|
|
var tableID int64 = 10
|
|
tableKey := meta.TableKey(tableID)
|
|
require.True(b, meta.IsTableKey(tableKey))
|
|
|
|
parseID, err := meta.ParseTableKey(tableKey)
|
|
require.NoError(b, err)
|
|
require.Equal(b, tableID, parseID)
|
|
}
|
|
|
|
func TestAutoTableIDKey(b *testing.T) {
|
|
var tableID int64 = 10
|
|
tableKey := meta.AutoTableIDKey(tableID)
|
|
require.True(b, meta.IsAutoTableIDKey(tableKey))
|
|
|
|
id, err := meta.ParseAutoTableIDKey(tableKey)
|
|
require.NoError(b, err)
|
|
require.Equal(b, tableID, id)
|
|
}
|
|
|
|
func TestAutoRandomTableIDKey(b *testing.T) {
|
|
var tableID int64 = 10
|
|
key := meta.AutoRandomTableIDKey(tableID)
|
|
require.True(b, meta.IsAutoRandomTableIDKey(key))
|
|
|
|
id, err := meta.ParseAutoRandomTableIDKey(key)
|
|
require.NoError(b, err)
|
|
require.Equal(b, tableID, id)
|
|
}
|
|
|
|
func TestSequenceKey(b *testing.T) {
|
|
var tableID int64 = 10
|
|
key := meta.SequenceKey(tableID)
|
|
require.True(b, meta.IsSequenceKey(key))
|
|
|
|
id, err := meta.ParseSequenceKey(key)
|
|
require.NoError(b, err)
|
|
require.Equal(b, tableID, id)
|
|
}
|
|
|
|
func TestCreateMySQLDatabase(t *testing.T) {
|
|
store, err := mockstore.NewMockStore()
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
require.NoError(t, store.Close())
|
|
}()
|
|
|
|
txn, err := store.Begin()
|
|
require.NoError(t, err)
|
|
|
|
m := meta.NewMeta(txn)
|
|
|
|
dbID, err := m.CreateMySQLDatabaseIfNotExists()
|
|
require.NoError(t, err)
|
|
require.Greater(t, dbID, int64(0))
|
|
|
|
anotherDBID, err := m.CreateMySQLDatabaseIfNotExists()
|
|
require.NoError(t, err)
|
|
require.Equal(t, dbID, anotherDBID)
|
|
|
|
err = txn.Rollback()
|
|
require.NoError(t, err)
|
|
}
|