schematracker

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 Go to latest Published: Dec 15, 2024 License: Apache-2.0 Imports: 32 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var (
	// ConstructResultOfShowCreateDatabase should be assigned to executor.ConstructResultOfShowCreateDatabase.
	// It is used to break cycle import.
	ConstructResultOfShowCreateDatabase func(sessionctx.Context, *model.DBInfo, bool, *bytes.Buffer) error
	// ConstructResultOfShowCreateTable should be assigned to executor.ConstructResultOfShowCreateTable.
	// It is used to break cycle import.
	ConstructResultOfShowCreateTable func(sessionctx.Context, *model.TableInfo, autoid.Allocators, *bytes.Buffer) error
)

Functions

func NewStorageDDLInjector 

func NewStorageDDLInjector(s kv.Storage) kv.Storage

NewStorageDDLInjector creates a new StorageDDLInjector to inject Checker.

func UnwrapStorage 

func UnwrapStorage(s kv.Storage) kv.Storage

UnwrapStorage unwraps StorageDDLInjector for one level.

Types

type Checker 

type Checker struct {
	// contains filtered or unexported fields
}

Checker is used to check the result of SchemaTracker is same as real DDL.

func NewChecker 

func NewChecker(realDDL ddl.DDL, realExecutor ddl.Executor, infoCache *infoschema.InfoCache) *Checker

NewChecker creates a Checker.

func (*Checker) AddResourceGroup 

func (*Checker) AddResourceGroup(_ sessionctx.Context, _ *ast.CreateResourceGroupStmt) error

AddResourceGroup implements the DDL interface. ResourceGroup do not affect the transaction.

func (*Checker) AlterPlacementPolicy 

func (*Checker) AlterPlacementPolicy(_ sessionctx.Context, _ *ast.AlterPlacementPolicyStmt) error

AlterPlacementPolicy implements the DDL interface.

func (*Checker) AlterResourceGroup 

func (*Checker) AlterResourceGroup(_ sessionctx.Context, _ *ast.AlterResourceGroupStmt) error

AlterResourceGroup implements the DDL interface.

func (*Checker) AlterSchema 

func (d *Checker) AlterSchema(sctx sessionctx.Context, stmt *ast.AlterDatabaseStmt) error

AlterSchema implements the DDL interface.

func (*Checker) AlterSequence 

func (*Checker) AlterSequence(_ sessionctx.Context, _ *ast.AlterSequenceStmt) error

AlterSequence implements the DDL interface.

func (*Checker) AlterTable 

func (d *Checker) AlterTable(ctx context.Context, sctx sessionctx.Context, stmt *ast.AlterTableStmt) error

AlterTable implements the DDL interface.

func (*Checker) BatchCreateTableWithInfo 

func (*Checker) BatchCreateTableWithInfo(_ sessionctx.Context, _ pmodel.CIStr, _ []*model.TableInfo, _ ...ddl.CreateTableOption) error

BatchCreateTableWithInfo implements the DDL interface.

func (*Checker) CleanupTableLock 

func (d *Checker) CleanupTableLock(ctx sessionctx.Context, tables []*ast.TableName) error

CleanupTableLock implements the DDL interface.

func (*Checker) CreateIndex 

func (d *Checker) CreateIndex(ctx sessionctx.Context, stmt *ast.CreateIndexStmt) error

CreateIndex implements the DDL interface.

func (*Checker) CreatePlacementPolicy 

func (*Checker) CreatePlacementPolicy(_ sessionctx.Context, _ *ast.CreatePlacementPolicyStmt) error

CreatePlacementPolicy implements the DDL interface.

func (*Checker) CreatePlacementPolicyWithInfo 

func (*Checker) CreatePlacementPolicyWithInfo(_ sessionctx.Context, _ *model.PolicyInfo, _ ddl.OnExist) error

CreatePlacementPolicyWithInfo implements the DDL interface.

func (*Checker) CreateSchema 

func (d *Checker) CreateSchema(ctx sessionctx.Context, stmt *ast.CreateDatabaseStmt) error

CreateSchema implements the DDL interface.

func (*Checker) CreateSchemaWithInfo 

func (d *Checker) CreateSchemaWithInfo(ctx sessionctx.Context, info *model.DBInfo, onExist ddl.OnExist) error

CreateSchemaWithInfo implements the DDL interface.

func (*Checker) CreateSequence 

func (*Checker) CreateSequence(_ sessionctx.Context, _ *ast.CreateSequenceStmt) error

CreateSequence implements the DDL interface.

func (*Checker) CreateTable 

func (d *Checker) CreateTable(ctx sessionctx.Context, stmt *ast.CreateTableStmt) error

CreateTable implements the DDL interface.

func (*Checker) CreateTableWithInfo 

func (*Checker) CreateTableWithInfo(_ sessionctx.Context, _ pmodel.CIStr, _ *model.TableInfo, _ []model.InvolvingSchemaInfo, _ ...ddl.CreateTableOption) error

CreateTableWithInfo implements the DDL interface.

func (*Checker) CreateTestDB 

func (d *Checker) CreateTestDB(ctx sessionctx.Context)

CreateTestDB creates a `test` database like the default behaviour of TiDB.

func (*Checker) CreateView 

func (d *Checker) CreateView(ctx sessionctx.Context, stmt *ast.CreateViewStmt) error

CreateView implements the DDL interface.

func (*Checker) Disable 

func (d *Checker) Disable()

Disable turns off check.

func (*Checker) DoDDLJob 

func (d *Checker) DoDDLJob(ctx sessionctx.Context, job *model.Job) error

DoDDLJob implements the DDL interface.

func (*Checker) DoDDLJobWrapper 

func (d *Checker) DoDDLJobWrapper(ctx sessionctx.Context, jobW *ddl.JobWrapper) error

DoDDLJobWrapper implements the DDL interface.

func (*Checker) DropIndex 

func (d *Checker) DropIndex(ctx sessionctx.Context, stmt *ast.DropIndexStmt) error

DropIndex implements the DDL interface.

func (*Checker) DropPlacementPolicy 

func (*Checker) DropPlacementPolicy(_ sessionctx.Context, _ *ast.DropPlacementPolicyStmt) error

DropPlacementPolicy implements the DDL interface.

func (*Checker) DropResourceGroup 

func (*Checker) DropResourceGroup(_ sessionctx.Context, _ *ast.DropResourceGroupStmt) error

DropResourceGroup implements the DDL interface.

func (*Checker) DropSchema 

func (d *Checker) DropSchema(ctx sessionctx.Context, stmt *ast.DropDatabaseStmt) error

DropSchema implements the DDL interface.

func (*Checker) DropSequence 

func (*Checker) DropSequence(_ sessionctx.Context, _ *ast.DropSequenceStmt) (err error)

DropSequence implements the DDL interface.

func (*Checker) DropTable 

func (d *Checker) DropTable(ctx sessionctx.Context, stmt *ast.DropTableStmt) (err error)

DropTable implements the DDL interface.

func (*Checker) DropView 

func (d *Checker) DropView(ctx sessionctx.Context, stmt *ast.DropTableStmt) (err error)

DropView implements the DDL interface.

func (*Checker) Enable 

func (d *Checker) Enable()

Enable turns on check.

func (*Checker) FlashbackCluster 

func (*Checker) FlashbackCluster(_ sessionctx.Context, _ uint64) (err error)

FlashbackCluster implements the DDL interface.

func (*Checker) GetID 

func (d *Checker) GetID() string

GetID implements the DDL interface.

func (*Checker) GetMinJobIDRefresher 

func (d *Checker) GetMinJobIDRefresher() *systable.MinJobIDRefresher

GetMinJobIDRefresher implements the DDL interface.

func (*Checker) GetScope 

func (d *Checker) GetScope(status string) variable.ScopeFlag

GetScope implements the DDL interface.

func (*Checker) LockTables 

func (d *Checker) LockTables(ctx sessionctx.Context, stmt *ast.LockTablesStmt) error

LockTables implements the DDL interface.

func (*Checker) OwnerManager 

func (d *Checker) OwnerManager() owner.Manager

OwnerManager implements the DDL interface.

func (*Checker) RecoverSchema 

func (*Checker) RecoverSchema(_ sessionctx.Context, _ *model.RecoverSchemaInfo) (err error)

RecoverSchema implements the DDL interface.

func (*Checker) RecoverTable 

func (*Checker) RecoverTable(_ sessionctx.Context, _ *model.RecoverTableInfo) (err error)

RecoverTable implements the DDL interface.

func (*Checker) RegisterStatsHandle 

func (d *Checker) RegisterStatsHandle(h *handle.Handle)

RegisterStatsHandle implements the DDL interface.

func (*Checker) RenameTable 

func (d *Checker) RenameTable(ctx sessionctx.Context, stmt *ast.RenameTableStmt) error

RenameTable implements the DDL interface.

func (*Checker) RepairTable 

func (*Checker) RepairTable(_ sessionctx.Context, _ *ast.CreateTableStmt) error

RepairTable implements the DDL interface.

func (*Checker) SchemaSyncer 

func (d *Checker) SchemaSyncer() schemaver.Syncer

SchemaSyncer implements the DDL interface.

func (*Checker) Start 

func (d *Checker) Start(startMode ddl.StartMode, ctxPool *pools.ResourcePool) error

Start implements the DDL interface.

func (*Checker) StateSyncer 

func (d *Checker) StateSyncer() serverstate.Syncer

StateSyncer implements the DDL interface.

func (*Checker) Stats 

func (d *Checker) Stats(vars *variable.SessionVars) (map[string]any, error)

Stats implements the DDL interface.

func (*Checker) Stop 

func (d *Checker) Stop() error

Stop implements the DDL interface.

func (*Checker) TruncateTable 

func (*Checker) TruncateTable(_ sessionctx.Context, _ ast.Ident) error

TruncateTable implements the DDL interface.

func (*Checker) UnlockTables 

func (d *Checker) UnlockTables(ctx sessionctx.Context, lockedTables []model.TableLockTpInfo) error

UnlockTables implements the DDL interface.

func (*Checker) UpdateTableReplicaInfo 

func (*Checker) UpdateTableReplicaInfo(_ sessionctx.Context, _ int64, _ bool) error

UpdateTableReplicaInfo implements the DDL interface.

type InfoStore 

type InfoStore struct {
	// contains filtered or unexported fields
}

InfoStore is a simple structure that stores DBInfo and TableInfo. It's modifiable and not thread-safe.

func NewInfoStore 

func NewInfoStore(lowerCaseTableNames int) *InfoStore

NewInfoStore creates a InfoStore.

func (*InfoStore) AllSchemaNames 

func (i *InfoStore) AllSchemaNames() []string

AllSchemaNames returns all the schemas' names.

func (*InfoStore) AllTableNamesOfSchema 

func (i *InfoStore) AllTableNamesOfSchema(schema pmodel.CIStr) ([]string, error)

AllTableNamesOfSchema return all table names of a schema.

func (*InfoStore) DeleteSchema 

func (i *InfoStore) DeleteSchema(name pmodel.CIStr) bool

DeleteSchema deletes the schema from InfoSchema. Returns true when the schema exists, false otherwise.

func (*InfoStore) DeleteTable 

func (i *InfoStore) DeleteTable(schema, table pmodel.CIStr) error

DeleteTable deletes the TableInfo, it will return ErrDatabaseNotExists or ErrTableNotExists when schema or table does not exist.

func (*InfoStore) PutSchema 

func (i *InfoStore) PutSchema(dbInfo *model.DBInfo)

PutSchema puts a DBInfo, it will overwrite the old one.

func (*InfoStore) PutTable 

func (i *InfoStore) PutTable(schemaName pmodel.CIStr, tblInfo *model.TableInfo) error

PutTable puts a TableInfo, it will overwrite the old one. If the schema doesn't exist, it will return ErrDatabaseNotExists.

func (*InfoStore) SchemaByName 

func (i *InfoStore) SchemaByName(name pmodel.CIStr) *model.DBInfo

SchemaByName returns the DBInfo of given name. nil if not found.

func (*InfoStore) TableByName 

func (i *InfoStore) TableByName(_ context.Context, schema, table pmodel.CIStr) (*model.TableInfo, error)

TableByName returns the TableInfo. It will also return the error like an infoschema.

func (*InfoStore) TableClonedByName 

func (i *InfoStore) TableClonedByName(schema, table pmodel.CIStr) (*model.TableInfo, error)

TableClonedByName is like TableByName, plus it will clone the TableInfo.

type InfoStoreAdaptor 

type InfoStoreAdaptor struct {
	infoschema.InfoSchema
	// contains filtered or unexported fields
}

InfoStoreAdaptor convert InfoStore to InfoSchema, it only implements a part of InfoSchema interface to be used by DDL interface.

func (InfoStoreAdaptor) SchemaByName 

func (i InfoStoreAdaptor) SchemaByName(schema pmodel.CIStr) (*model.DBInfo, bool)

SchemaByName implements the InfoSchema interface.

func (InfoStoreAdaptor) TableByName 

func (i InfoStoreAdaptor) TableByName(ctx context.Context, schema, table pmodel.CIStr) (t table.Table, err error)

TableByName implements the InfoSchema interface.

func (InfoStoreAdaptor) TableExists 

func (i InfoStoreAdaptor) TableExists(schema, table pmodel.CIStr) bool

TableExists implements the InfoSchema interface.

func (InfoStoreAdaptor) TableInfoByName 

func (i InfoStoreAdaptor) TableInfoByName(schema, table pmodel.CIStr) (*model.TableInfo, error)

TableInfoByName implements the InfoSchema interface.

type SchemaTracker 

type SchemaTracker struct {
	*InfoStore
}

SchemaTracker is used to track schema changes by DM. It implements ddl.Executor interface and by applying DDL, it updates the table structure to keep tracked with upstream changes.

It embeds an InfoStore which stores DBInfo and TableInfo. The DBInfo and TableInfo can be treated as immutable, so after reading them by SchemaByName or TableByName, later modifications made by SchemaTracker will not change them. SchemaTracker is not thread-safe.

func NewSchemaTracker 

func NewSchemaTracker(lowerCaseTableNames int) SchemaTracker

NewSchemaTracker creates a SchemaTracker. lowerCaseTableNames has the same meaning as MySQL variable lower_case_table_names.

func (*SchemaTracker) AddResourceGroup 

func (*SchemaTracker) AddResourceGroup(_ sessionctx.Context, _ *ast.CreateResourceGroupStmt) error

AddResourceGroup implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) AlterPlacementPolicy 

func (*SchemaTracker) AlterPlacementPolicy(_ sessionctx.Context, _ *ast.AlterPlacementPolicyStmt) error

AlterPlacementPolicy implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) AlterResourceGroup 

func (*SchemaTracker) AlterResourceGroup(_ sessionctx.Context, _ *ast.AlterResourceGroupStmt) error

AlterResourceGroup implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) AlterSchema 

func (d *SchemaTracker) AlterSchema(ctx sessionctx.Context, stmt *ast.AlterDatabaseStmt) (err error)

AlterSchema implements the DDL interface.

func (*SchemaTracker) AlterSequence 

func (*SchemaTracker) AlterSequence(_ sessionctx.Context, _ *ast.AlterSequenceStmt) error

AlterSequence implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) AlterTable 

func (d *SchemaTracker) AlterTable(ctx context.Context, sctx sessionctx.Context, stmt *ast.AlterTableStmt) (err error)

AlterTable implements the DDL interface.

func (*SchemaTracker) BatchCreateTableWithInfo 

func (d *SchemaTracker) BatchCreateTableWithInfo(ctx sessionctx.Context, schema pmodel.CIStr, info []*model.TableInfo, cs ...ddl.CreateTableOption) error

BatchCreateTableWithInfo implements the DDL interface, it will call CreateTableWithInfo for each table.

func (*SchemaTracker) CleanupTableLock 

func (*SchemaTracker) CleanupTableLock(_ sessionctx.Context, _ []*ast.TableName) error

CleanupTableLock implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) CreateIndex 

func (d *SchemaTracker) CreateIndex(ctx sessionctx.Context, stmt *ast.CreateIndexStmt) error

CreateIndex implements the DDL interface.

func (*SchemaTracker) CreatePlacementPolicy 

func (*SchemaTracker) CreatePlacementPolicy(_ sessionctx.Context, _ *ast.CreatePlacementPolicyStmt) error

CreatePlacementPolicy implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) CreatePlacementPolicyWithInfo 

func (*SchemaTracker) CreatePlacementPolicyWithInfo(_ sessionctx.Context, _ *model.PolicyInfo, _ ddl.OnExist) error

CreatePlacementPolicyWithInfo implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) CreateSchema 

func (d *SchemaTracker) CreateSchema(ctx sessionctx.Context, stmt *ast.CreateDatabaseStmt) error

CreateSchema implements the DDL interface.

func (*SchemaTracker) CreateSchemaWithInfo 

func (d *SchemaTracker) CreateSchemaWithInfo(_ sessionctx.Context, dbInfo *model.DBInfo, onExist ddl.OnExist) error

CreateSchemaWithInfo implements the DDL interface.

func (*SchemaTracker) CreateSequence 

func (*SchemaTracker) CreateSequence(_ sessionctx.Context, _ *ast.CreateSequenceStmt) error

CreateSequence implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) CreateTable 

func (d *SchemaTracker) CreateTable(ctx sessionctx.Context, s *ast.CreateTableStmt) error

CreateTable implements the DDL interface.

func (*SchemaTracker) CreateTableWithInfo 

func (d *SchemaTracker) CreateTableWithInfo(
	_ sessionctx.Context,
	dbName pmodel.CIStr,
	info *model.TableInfo,
	_ []model.InvolvingSchemaInfo,
	cs ...ddl.CreateTableOption,
) error

CreateTableWithInfo implements the DDL interface.

func (*SchemaTracker) CreateTestDB 

func (d *SchemaTracker) CreateTestDB(ctx sessionctx.Context)

CreateTestDB creates the `test` database, which is the default behavior of TiDB.

func (*SchemaTracker) CreateView 

func (d *SchemaTracker) CreateView(ctx sessionctx.Context, s *ast.CreateViewStmt) error

CreateView implements the DDL interface.

func (*SchemaTracker) DropIndex 

func (d *SchemaTracker) DropIndex(ctx sessionctx.Context, stmt *ast.DropIndexStmt) error

DropIndex implements the DDL interface.

func (*SchemaTracker) DropPlacementPolicy 

func (*SchemaTracker) DropPlacementPolicy(_ sessionctx.Context, _ *ast.DropPlacementPolicyStmt) error

DropPlacementPolicy implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) DropResourceGroup 

func (*SchemaTracker) DropResourceGroup(_ sessionctx.Context, _ *ast.DropResourceGroupStmt) error

DropResourceGroup implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) DropSchema 

func (d *SchemaTracker) DropSchema(_ sessionctx.Context, stmt *ast.DropDatabaseStmt) error

DropSchema implements the DDL interface.

func (*SchemaTracker) DropSequence 

func (*SchemaTracker) DropSequence(_ sessionctx.Context, _ *ast.DropSequenceStmt) (err error)

DropSequence implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) DropTable 

func (d *SchemaTracker) DropTable(_ sessionctx.Context, stmt *ast.DropTableStmt) (err error)

DropTable implements the DDL interface.

func (*SchemaTracker) DropView 

func (d *SchemaTracker) DropView(_ sessionctx.Context, stmt *ast.DropTableStmt) (err error)

DropView implements the DDL interface.

func (*SchemaTracker) FlashbackCluster 

func (*SchemaTracker) FlashbackCluster(_ sessionctx.Context, _ uint64) (err error)

FlashbackCluster implements the DDL interface, which is no-op in DM's case.

func (*SchemaTracker) LockTables 

func (*SchemaTracker) LockTables(_ sessionctx.Context, _ *ast.LockTablesStmt) error

LockTables implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) RecoverSchema 

func (*SchemaTracker) RecoverSchema(_ sessionctx.Context, _ *model.RecoverSchemaInfo) (err error)

RecoverSchema implements the DDL interface, which is no-op in DM's case.

func (*SchemaTracker) RecoverTable 

func (*SchemaTracker) RecoverTable(_ sessionctx.Context, _ *model.RecoverTableInfo) (err error)

RecoverTable implements the DDL interface, which is no-op in DM's case.

func (*SchemaTracker) RenameTable 

func (d *SchemaTracker) RenameTable(ctx sessionctx.Context, stmt *ast.RenameTableStmt) error

RenameTable implements the DDL interface.

func (*SchemaTracker) RepairTable 

func (*SchemaTracker) RepairTable(_ sessionctx.Context, _ *ast.CreateTableStmt) error

RepairTable implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) TruncateTable 

func (*SchemaTracker) TruncateTable(_ sessionctx.Context, _ ast.Ident) error

TruncateTable implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) UnlockTables 

func (*SchemaTracker) UnlockTables(_ sessionctx.Context, _ []model.TableLockTpInfo) error

UnlockTables implements the DDL interface, it's no-op in DM's case.

func (*SchemaTracker) UpdateTableReplicaInfo 

func (*SchemaTracker) UpdateTableReplicaInfo(_ sessionctx.Context, _ int64, _ bool) error

UpdateTableReplicaInfo implements the DDL interface, it's no-op in DM's case.

type StorageDDLInjector 

type StorageDDLInjector struct {
	Injector func(ddl.DDL, ddl.Executor, *infoschema.InfoCache) *Checker
	// contains filtered or unexported fields
}

StorageDDLInjector wraps kv.Storage to inject checker to domain's DDL in bootstrap time.

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