101 lines
3.4 KiB
Go
101 lines
3.4 KiB
Go
// Copyright 2025 PingCAP, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package ddl
|
|
|
|
import (
|
|
"github.com/pingcap/errors"
|
|
"github.com/pingcap/tidb/pkg/infoschema"
|
|
"github.com/pingcap/tidb/pkg/meta/model"
|
|
"github.com/pingcap/tidb/pkg/sessionctx"
|
|
)
|
|
|
|
// onAlterTableMode should only be called by alterTableMode, will call updateVersionAndTableInfo
|
|
func onAlterTableMode(jobCtx *jobContext, job *model.Job) (ver int64, err error) {
|
|
args, err := model.GetAlterTableModeArgs(job)
|
|
if err != nil {
|
|
return ver, err
|
|
}
|
|
|
|
var tbInfo *model.TableInfo
|
|
metaMut := jobCtx.metaMut
|
|
tbInfo, err = GetTableInfoAndCancelFaultJob(metaMut, job, job.SchemaID)
|
|
if err != nil {
|
|
return ver, err
|
|
}
|
|
|
|
switch tbInfo.Mode {
|
|
case model.TableModeNormal, model.TableModeImport, model.TableModeRestore:
|
|
if tbInfo.Mode == args.TableMode {
|
|
job.State = model.JobStateDone
|
|
return ver, err
|
|
}
|
|
// directly change table mode to target mode
|
|
err = alterTableMode(tbInfo, args)
|
|
if err != nil {
|
|
job.State = model.JobStateCancelled
|
|
return ver, err
|
|
}
|
|
// update table info and schema version
|
|
ver, err = updateVersionAndTableInfo(jobCtx, job, tbInfo, true)
|
|
if err != nil {
|
|
return ver, errors.Trace(err)
|
|
}
|
|
job.FinishTableJob(model.JobStateDone, model.StatePublic, ver, tbInfo)
|
|
default:
|
|
job.State = model.JobStateCancelled
|
|
err = infoschema.ErrInvalidTableModeSet.GenWithStackByArgs(tbInfo.Mode, args.TableMode, tbInfo.Name.O)
|
|
}
|
|
|
|
return ver, err
|
|
}
|
|
|
|
// alterTableMode first checks if the change is valid and changes table mode to target mode
|
|
// Currently we can assume args.TableMode will NEVER be model.TableModeRestore.
|
|
// Because BR will NOT use this function to set a table into ModeRestore,
|
|
// instead BR will use (batch)CreateTableWithInfo.
|
|
func alterTableMode(tbInfo *model.TableInfo, args *model.AlterTableModeArgs) error {
|
|
ok := validateTableMode(tbInfo.Mode, args.TableMode)
|
|
if !ok {
|
|
return infoschema.ErrInvalidTableModeSet.GenWithStackByArgs(tbInfo.Mode, args.TableMode, tbInfo.Name.O)
|
|
}
|
|
|
|
tbInfo.Mode = args.TableMode
|
|
return nil
|
|
}
|
|
|
|
// validateTableMode validate whether table mode convert is legal.
|
|
// Now only block import/restore to convert to each other.
|
|
// TODO: Now allow switching between the same table modes, but additional validation will be added later
|
|
// to verify that only the same modification source can perform ALTER same table mode.
|
|
func validateTableMode(origin, target model.TableMode) bool {
|
|
if origin == model.TableModeImport && target == model.TableModeRestore {
|
|
return false
|
|
}
|
|
if origin == model.TableModeRestore && target == model.TableModeImport {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// AlterTableMode creates a DDL job for alter table mode.
|
|
func AlterTableMode(de Executor, sctx sessionctx.Context, mode model.TableMode, schemaID, tableID int64) error {
|
|
args := &model.AlterTableModeArgs{
|
|
TableMode: mode,
|
|
SchemaID: schemaID,
|
|
TableID: tableID,
|
|
}
|
|
return de.AlterTableMode(sctx, args)
|
|
}
|