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226 lines
5.5 KiB
226 lines
5.5 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 ddl
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import (
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"context"
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"strings"
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"sync"
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. "github.com/pingcap/check"
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"github.com/pingcap/errors"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/table"
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)
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var _ = Suite(&testForeighKeySuite{})
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type testForeighKeySuite struct {
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store kv.Storage
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dbInfo *model.DBInfo
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d *ddl
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ctx sessionctx.Context
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}
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func (s *testForeighKeySuite) SetUpSuite(c *C) {
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s.store = testCreateStore(c, "test_foreign")
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}
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func (s *testForeighKeySuite) TearDownSuite(c *C) {
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err := s.store.Close()
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c.Assert(err, IsNil)
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}
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func (s *testForeighKeySuite) testCreateForeignKey(c *C, tblInfo *model.TableInfo, fkName string, keys []string, refTable string, refKeys []string, onDelete ast.ReferOptionType, onUpdate ast.ReferOptionType) *model.Job {
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FKName := model.NewCIStr(fkName)
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Keys := make([]model.CIStr, len(keys))
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for i, key := range keys {
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Keys[i] = model.NewCIStr(key)
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}
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RefTable := model.NewCIStr(refTable)
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RefKeys := make([]model.CIStr, len(refKeys))
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for i, key := range refKeys {
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RefKeys[i] = model.NewCIStr(key)
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}
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fkInfo := &model.FKInfo{
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Name: FKName,
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RefTable: RefTable,
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RefCols: RefKeys,
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Cols: Keys,
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OnDelete: int(onDelete),
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OnUpdate: int(onUpdate),
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State: model.StateNone,
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}
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job := &model.Job{
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SchemaID: s.dbInfo.ID,
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TableID: tblInfo.ID,
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Type: model.ActionAddForeignKey,
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BinlogInfo: &model.HistoryInfo{},
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Args: []interface{}{fkInfo},
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}
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err := s.ctx.NewTxn(context.Background())
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c.Assert(err, IsNil)
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err = s.d.doDDLJob(s.ctx, job)
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c.Assert(err, IsNil)
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return job
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}
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func testDropForeignKey(c *C, ctx sessionctx.Context, d *ddl, dbInfo *model.DBInfo, tblInfo *model.TableInfo, foreignKeyName string) *model.Job {
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job := &model.Job{
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SchemaID: dbInfo.ID,
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TableID: tblInfo.ID,
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Type: model.ActionDropForeignKey,
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BinlogInfo: &model.HistoryInfo{},
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Args: []interface{}{model.NewCIStr(foreignKeyName)},
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}
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err := d.doDDLJob(ctx, job)
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c.Assert(err, IsNil)
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v := getSchemaVer(c, ctx)
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checkHistoryJobArgs(c, ctx, job.ID, &historyJobArgs{ver: v, tbl: tblInfo})
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return job
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}
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func getForeignKey(t table.Table, name string) *model.FKInfo {
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for _, fk := range t.Meta().ForeignKeys {
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// only public foreign key can be read.
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if fk.State != model.StatePublic {
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continue
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}
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if fk.Name.L == strings.ToLower(name) {
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return fk
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}
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}
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return nil
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}
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func (s *testForeighKeySuite) TestForeignKey(c *C) {
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d := testNewDDLAndStart(
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context.Background(),
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c,
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WithStore(s.store),
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WithLease(testLease),
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)
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defer d.Stop()
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s.d = d
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s.dbInfo = testSchemaInfo(c, d, "test_foreign")
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ctx := testNewContext(d)
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s.ctx = ctx
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testCreateSchema(c, ctx, d, s.dbInfo)
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tblInfo := testTableInfo(c, d, "t", 3)
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err := ctx.NewTxn(context.Background())
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c.Assert(err, IsNil)
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testCreateTable(c, ctx, d, s.dbInfo, tblInfo)
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txn, err := ctx.Txn(true)
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c.Assert(err, IsNil)
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err = txn.Commit(context.Background())
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c.Assert(err, IsNil)
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// fix data race
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var mu sync.Mutex
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checkOK := false
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var hookErr error
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tc := &TestDDLCallback{}
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tc.onJobUpdated = func(job *model.Job) {
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if job.State != model.JobStateDone {
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return
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}
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mu.Lock()
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defer mu.Unlock()
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var t table.Table
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t, err = testGetTableWithError(d, s.dbInfo.ID, tblInfo.ID)
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if err != nil {
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hookErr = errors.Trace(err)
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return
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}
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fk := getForeignKey(t, "c1_fk")
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if fk == nil {
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hookErr = errors.New("foreign key not exists")
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return
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}
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checkOK = true
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}
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originalHook := d.GetHook()
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defer d.SetHook(originalHook)
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d.SetHook(tc)
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job := s.testCreateForeignKey(c, tblInfo, "c1_fk", []string{"c1"}, "t2", []string{"c1"}, ast.ReferOptionCascade, ast.ReferOptionSetNull)
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testCheckJobDone(c, d, job, true)
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txn, err = ctx.Txn(true)
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c.Assert(err, IsNil)
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err = txn.Commit(context.Background())
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c.Assert(err, IsNil)
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mu.Lock()
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hErr := hookErr
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ok := checkOK
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mu.Unlock()
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c.Assert(hErr, IsNil)
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c.Assert(ok, IsTrue)
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v := getSchemaVer(c, ctx)
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checkHistoryJobArgs(c, ctx, job.ID, &historyJobArgs{ver: v, tbl: tblInfo})
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mu.Lock()
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checkOK = false
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mu.Unlock()
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// fix data race pr/#9491
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tc2 := &TestDDLCallback{}
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tc2.onJobUpdated = func(job *model.Job) {
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if job.State != model.JobStateDone {
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return
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}
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mu.Lock()
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defer mu.Unlock()
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var t table.Table
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t, err = testGetTableWithError(d, s.dbInfo.ID, tblInfo.ID)
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if err != nil {
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hookErr = errors.Trace(err)
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return
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}
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fk := getForeignKey(t, "c1_fk")
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if fk != nil {
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hookErr = errors.New("foreign key has not been dropped")
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return
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}
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checkOK = true
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}
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d.SetHook(tc2)
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job = testDropForeignKey(c, ctx, d, s.dbInfo, tblInfo, "c1_fk")
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testCheckJobDone(c, d, job, false)
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mu.Lock()
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hErr = hookErr
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ok = checkOK
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mu.Unlock()
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c.Assert(hErr, IsNil)
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c.Assert(ok, IsTrue)
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err = ctx.NewTxn(context.Background())
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c.Assert(err, IsNil)
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job = testDropTable(c, ctx, d, s.dbInfo, tblInfo)
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testCheckJobDone(c, d, job, false)
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txn, err = ctx.Txn(true)
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c.Assert(err, IsNil)
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err = txn.Commit(context.Background())
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c.Assert(err, IsNil)
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}
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