382 lines
11 KiB
Go
382 lines
11 KiB
Go
// Copyright 2015 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 mock is just for test only.
|
|
package mock
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/pingcap/errors"
|
|
"github.com/pingcap/kvproto/pkg/kvrpcpb"
|
|
"github.com/pingcap/tidb/kv"
|
|
"github.com/pingcap/tidb/owner"
|
|
"github.com/pingcap/tidb/parser/ast"
|
|
"github.com/pingcap/tidb/parser/model"
|
|
"github.com/pingcap/tidb/sessionctx"
|
|
"github.com/pingcap/tidb/sessionctx/variable"
|
|
"github.com/pingcap/tidb/util"
|
|
"github.com/pingcap/tidb/util/disk"
|
|
"github.com/pingcap/tidb/util/kvcache"
|
|
"github.com/pingcap/tidb/util/memory"
|
|
"github.com/pingcap/tidb/util/sli"
|
|
"github.com/pingcap/tidb/util/sqlexec"
|
|
"github.com/pingcap/tidb/util/topsql/stmtstats"
|
|
"github.com/pingcap/tipb/go-binlog"
|
|
"github.com/tikv/client-go/v2/tikv"
|
|
)
|
|
|
|
var (
|
|
_ sessionctx.Context = (*Context)(nil)
|
|
_ sqlexec.SQLExecutor = (*Context)(nil)
|
|
)
|
|
|
|
// Context represents mocked sessionctx.Context.
|
|
type Context struct {
|
|
values map[fmt.Stringer]interface{}
|
|
txn wrapTxn // mock global variable
|
|
Store kv.Storage // mock global variable
|
|
sessionVars *variable.SessionVars
|
|
ctx context.Context
|
|
cancel context.CancelFunc
|
|
sm util.SessionManager
|
|
pcache *kvcache.SimpleLRUCache
|
|
}
|
|
|
|
type wrapTxn struct {
|
|
kv.Transaction
|
|
}
|
|
|
|
func (txn *wrapTxn) Valid() bool {
|
|
return txn.Transaction != nil && txn.Transaction.Valid()
|
|
}
|
|
|
|
func (txn *wrapTxn) CacheTableInfo(id int64, info *model.TableInfo) {
|
|
if txn.Transaction == nil {
|
|
return
|
|
}
|
|
txn.Transaction.CacheTableInfo(id, info)
|
|
}
|
|
|
|
func (txn *wrapTxn) GetTableInfo(id int64) *model.TableInfo {
|
|
if txn.Transaction == nil {
|
|
return nil
|
|
}
|
|
return txn.Transaction.GetTableInfo(id)
|
|
}
|
|
|
|
// Execute implements sqlexec.SQLExecutor Execute interface.
|
|
func (c *Context) Execute(ctx context.Context, sql string) ([]sqlexec.RecordSet, error) {
|
|
return nil, errors.Errorf("Not Supported.")
|
|
}
|
|
|
|
// ExecuteStmt implements sqlexec.SQLExecutor ExecuteStmt interface.
|
|
func (c *Context) ExecuteStmt(ctx context.Context, stmtNode ast.StmtNode) (sqlexec.RecordSet, error) {
|
|
return nil, errors.Errorf("Not Supported.")
|
|
}
|
|
|
|
// SetDiskFullOpt sets allowed options of current operation in each TiKV disk usage level.
|
|
func (c *Context) SetDiskFullOpt(level kvrpcpb.DiskFullOpt) {
|
|
c.txn.Transaction.SetDiskFullOpt(kvrpcpb.DiskFullOpt_AllowedOnAlmostFull)
|
|
}
|
|
|
|
// ClearDiskFullOpt clears allowed options of current operation in each TiKV disk usage level.
|
|
func (c *Context) ClearDiskFullOpt() {
|
|
c.txn.Transaction.ClearDiskFullOpt()
|
|
}
|
|
|
|
// ExecuteInternal implements sqlexec.SQLExecutor ExecuteInternal interface.
|
|
func (c *Context) ExecuteInternal(ctx context.Context, sql string, args ...interface{}) (sqlexec.RecordSet, error) {
|
|
return nil, errors.Errorf("Not Supported.")
|
|
}
|
|
|
|
type mockDDLOwnerChecker struct{}
|
|
|
|
func (c *mockDDLOwnerChecker) IsOwner() bool { return true }
|
|
|
|
// DDLOwnerChecker returns owner.DDLOwnerChecker.
|
|
func (c *Context) DDLOwnerChecker() owner.DDLOwnerChecker {
|
|
return &mockDDLOwnerChecker{}
|
|
}
|
|
|
|
// SetValue implements sessionctx.Context SetValue interface.
|
|
func (c *Context) SetValue(key fmt.Stringer, value interface{}) {
|
|
c.values[key] = value
|
|
}
|
|
|
|
// Value implements sessionctx.Context Value interface.
|
|
func (c *Context) Value(key fmt.Stringer) interface{} {
|
|
value := c.values[key]
|
|
return value
|
|
}
|
|
|
|
// ClearValue implements sessionctx.Context ClearValue interface.
|
|
func (c *Context) ClearValue(key fmt.Stringer) {
|
|
delete(c.values, key)
|
|
}
|
|
|
|
// HasDirtyContent implements sessionctx.Context ClearValue interface.
|
|
func (c *Context) HasDirtyContent(tid int64) bool {
|
|
return false
|
|
}
|
|
|
|
// GetSessionVars implements the sessionctx.Context GetSessionVars interface.
|
|
func (c *Context) GetSessionVars() *variable.SessionVars {
|
|
return c.sessionVars
|
|
}
|
|
|
|
// Txn implements sessionctx.Context Txn interface.
|
|
func (c *Context) Txn(bool) (kv.Transaction, error) {
|
|
return &c.txn, nil
|
|
}
|
|
|
|
// GetClient implements sessionctx.Context GetClient interface.
|
|
func (c *Context) GetClient() kv.Client {
|
|
if c.Store == nil {
|
|
return nil
|
|
}
|
|
return c.Store.GetClient()
|
|
}
|
|
|
|
// GetMPPClient implements sessionctx.Context GetMPPClient interface.
|
|
func (c *Context) GetMPPClient() kv.MPPClient {
|
|
if c.Store == nil {
|
|
return nil
|
|
}
|
|
return c.Store.GetMPPClient()
|
|
}
|
|
|
|
// GetInfoSchema implements sessionctx.Context GetInfoSchema interface.
|
|
func (c *Context) GetInfoSchema() sessionctx.InfoschemaMetaVersion {
|
|
vars := c.GetSessionVars()
|
|
if snap, ok := vars.SnapshotInfoschema.(sessionctx.InfoschemaMetaVersion); ok {
|
|
return snap
|
|
}
|
|
if vars.TxnCtx != nil && vars.InTxn() {
|
|
if is, ok := vars.TxnCtx.InfoSchema.(sessionctx.InfoschemaMetaVersion); ok {
|
|
return is
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GetBuiltinFunctionUsage implements sessionctx.Context GetBuiltinFunctionUsage interface.
|
|
func (c *Context) GetBuiltinFunctionUsage() map[string]uint32 {
|
|
return make(map[string]uint32)
|
|
}
|
|
|
|
// GetGlobalSysVar implements GlobalVarAccessor GetGlobalSysVar interface.
|
|
func (c *Context) GetGlobalSysVar(ctx sessionctx.Context, name string) (string, error) {
|
|
v := variable.GetSysVar(name)
|
|
if v == nil {
|
|
return "", variable.ErrUnknownSystemVar.GenWithStackByArgs(name)
|
|
}
|
|
return v.Value, nil
|
|
}
|
|
|
|
// SetGlobalSysVar implements GlobalVarAccessor SetGlobalSysVar interface.
|
|
func (c *Context) SetGlobalSysVar(ctx sessionctx.Context, name string, value string) error {
|
|
v := variable.GetSysVar(name)
|
|
if v == nil {
|
|
return variable.ErrUnknownSystemVar.GenWithStackByArgs(name)
|
|
}
|
|
v.Value = value
|
|
return nil
|
|
}
|
|
|
|
// PreparedPlanCache implements the sessionctx.Context interface.
|
|
func (c *Context) PreparedPlanCache() *kvcache.SimpleLRUCache {
|
|
return c.pcache
|
|
}
|
|
|
|
// NewTxn implements the sessionctx.Context interface.
|
|
func (c *Context) NewTxn(context.Context) error {
|
|
if c.Store == nil {
|
|
return errors.New("store is not set")
|
|
}
|
|
if c.txn.Valid() {
|
|
err := c.txn.Commit(c.ctx)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
}
|
|
|
|
txn, err := c.Store.Begin()
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
c.txn.Transaction = txn
|
|
return nil
|
|
}
|
|
|
|
// NewStaleTxnWithStartTS implements the sessionctx.Context interface.
|
|
func (c *Context) NewStaleTxnWithStartTS(ctx context.Context, startTS uint64) error {
|
|
return c.NewTxn(ctx)
|
|
}
|
|
|
|
// GetSnapshotWithTS return a snapshot with ts
|
|
func (c *Context) GetSnapshotWithTS(ts uint64) kv.Snapshot {
|
|
return c.Store.GetSnapshot(kv.Version{Ver: ts})
|
|
}
|
|
|
|
// RefreshTxnCtx implements the sessionctx.Context interface.
|
|
func (c *Context) RefreshTxnCtx(ctx context.Context) error {
|
|
return errors.Trace(c.NewTxn(ctx))
|
|
}
|
|
|
|
// RefreshVars implements the sessionctx.Context interface.
|
|
func (c *Context) RefreshVars(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
// InitTxnWithStartTS implements the sessionctx.Context interface with startTS.
|
|
func (c *Context) InitTxnWithStartTS(startTS uint64) error {
|
|
if c.txn.Valid() {
|
|
return nil
|
|
}
|
|
if c.Store != nil {
|
|
txn, err := c.Store.Begin(tikv.WithTxnScope(kv.GlobalTxnScope), tikv.WithStartTS(startTS))
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
c.txn.Transaction = txn
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GetStore gets the store of session.
|
|
func (c *Context) GetStore() kv.Storage {
|
|
return c.Store
|
|
}
|
|
|
|
// GetSessionManager implements the sessionctx.Context interface.
|
|
func (c *Context) GetSessionManager() util.SessionManager {
|
|
return c.sm
|
|
}
|
|
|
|
// SetSessionManager set the session manager.
|
|
func (c *Context) SetSessionManager(sm util.SessionManager) {
|
|
c.sm = sm
|
|
}
|
|
|
|
// Cancel implements the Session interface.
|
|
func (c *Context) Cancel() {
|
|
c.cancel()
|
|
}
|
|
|
|
// GoCtx returns standard sessionctx.Context that bind with current transaction.
|
|
func (c *Context) GoCtx() context.Context {
|
|
return c.ctx
|
|
}
|
|
|
|
// StoreQueryFeedback stores the query feedback.
|
|
func (c *Context) StoreQueryFeedback(_ interface{}) {}
|
|
|
|
// UpdateColStatsUsage updates the column stats usage.
|
|
func (c *Context) UpdateColStatsUsage(_ []model.TableColumnID) {}
|
|
|
|
// StoreIndexUsage strores the index usage information.
|
|
func (c *Context) StoreIndexUsage(_ int64, _ int64, _ int64) {}
|
|
|
|
// GetTxnWriteThroughputSLI implements the sessionctx.Context interface.
|
|
func (c *Context) GetTxnWriteThroughputSLI() *sli.TxnWriteThroughputSLI {
|
|
return &sli.TxnWriteThroughputSLI{}
|
|
}
|
|
|
|
// StmtCommit implements the sessionctx.Context interface.
|
|
func (c *Context) StmtCommit() {}
|
|
|
|
// StmtRollback implements the sessionctx.Context interface.
|
|
func (c *Context) StmtRollback() {
|
|
}
|
|
|
|
// StmtGetMutation implements the sessionctx.Context interface.
|
|
func (c *Context) StmtGetMutation(tableID int64) *binlog.TableMutation {
|
|
return nil
|
|
}
|
|
|
|
// AddTableLock implements the sessionctx.Context interface.
|
|
func (c *Context) AddTableLock(_ []model.TableLockTpInfo) {
|
|
}
|
|
|
|
// ReleaseTableLocks implements the sessionctx.Context interface.
|
|
func (c *Context) ReleaseTableLocks(locks []model.TableLockTpInfo) {
|
|
}
|
|
|
|
// ReleaseTableLockByTableIDs implements the sessionctx.Context interface.
|
|
func (c *Context) ReleaseTableLockByTableIDs(tableIDs []int64) {
|
|
}
|
|
|
|
// CheckTableLocked implements the sessionctx.Context interface.
|
|
func (c *Context) CheckTableLocked(_ int64) (bool, model.TableLockType) {
|
|
return false, model.TableLockNone
|
|
}
|
|
|
|
// GetAllTableLocks implements the sessionctx.Context interface.
|
|
func (c *Context) GetAllTableLocks() []model.TableLockTpInfo {
|
|
return nil
|
|
}
|
|
|
|
// ReleaseAllTableLocks implements the sessionctx.Context interface.
|
|
func (c *Context) ReleaseAllTableLocks() {
|
|
}
|
|
|
|
// HasLockedTables implements the sessionctx.Context interface.
|
|
func (c *Context) HasLockedTables() bool {
|
|
return false
|
|
}
|
|
|
|
// PrepareTSFuture implements the sessionctx.Context interface.
|
|
func (c *Context) PrepareTSFuture(ctx context.Context) {
|
|
}
|
|
|
|
// GetStmtStats implements the sessionctx.Context interface.
|
|
func (c *Context) GetStmtStats() *stmtstats.StatementStats {
|
|
return nil
|
|
}
|
|
|
|
// Close implements the sessionctx.Context interface.
|
|
func (c *Context) Close() {
|
|
}
|
|
|
|
// NewContext creates a new mocked sessionctx.Context.
|
|
func NewContext() *Context {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
sctx := &Context{
|
|
values: make(map[fmt.Stringer]interface{}),
|
|
sessionVars: variable.NewSessionVars(),
|
|
ctx: ctx,
|
|
cancel: cancel,
|
|
}
|
|
sctx.sessionVars.InitChunkSize = 2
|
|
sctx.sessionVars.MaxChunkSize = 32
|
|
sctx.sessionVars.StmtCtx.TimeZone = time.UTC
|
|
sctx.sessionVars.StmtCtx.MemTracker = memory.NewTracker(-1, -1)
|
|
sctx.sessionVars.StmtCtx.DiskTracker = disk.NewTracker(-1, -1)
|
|
sctx.sessionVars.GlobalVarsAccessor = variable.NewMockGlobalAccessor()
|
|
if err := sctx.GetSessionVars().SetSystemVar(variable.MaxAllowedPacket, "67108864"); err != nil {
|
|
panic(err)
|
|
}
|
|
if err := sctx.GetSessionVars().SetSystemVar(variable.CharacterSetConnection, "utf8mb4"); err != nil {
|
|
panic(err)
|
|
}
|
|
return sctx
|
|
}
|
|
|
|
// HookKeyForTest is as alias, used by context.WithValue.
|
|
// golint forbits using string type as key in context.WithValue.
|
|
type HookKeyForTest string
|