124 lines
4.0 KiB
Go
124 lines
4.0 KiB
Go
// Copyright 2023 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 handle
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import (
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"github.com/pingcap/errors"
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"github.com/pingcap/tidb/statistics/handle/lockstats"
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"github.com/pingcap/tidb/util/sqlexec"
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)
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// LockTables add locked tables id to store.
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// - tidAndNames: table ids and names of which will be locked.
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// - pidAndNames: partition ids and names of which will be locked.
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// Return the message of skipped tables and error.
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func (h *Handle) LockTables(tidAndNames map[int64]string, pidAndNames map[int64]string) (string, error) {
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se, err := h.pool.Get()
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if err != nil {
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return "", errors.Trace(err)
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}
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defer h.pool.Put(se)
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exec := se.(sqlexec.RestrictedSQLExecutor)
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return lockstats.AddLockedTables(exec, tidAndNames, pidAndNames)
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}
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// LockPartitions add locked partitions id to store.
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// If the whole table is locked, then skip all partitions of the table.
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// - tid: table id of which will be locked.
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// - tableName: table name of which will be locked.
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// - pidNames: partition ids of which will be locked.
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// Return the message of skipped tables and error.
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// Note: If the whole table is locked, then skip all partitions of the table.
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func (h *Handle) LockPartitions(
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tid int64,
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tableName string,
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pidNames map[int64]string,
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) (string, error) {
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se, err := h.pool.Get()
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if err != nil {
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return "", errors.Trace(err)
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}
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defer h.pool.Put(se)
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exec := se.(sqlexec.RestrictedSQLExecutor)
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return lockstats.AddLockedPartitions(exec, tid, tableName, pidNames)
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}
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// RemoveLockedTables remove tables from table locked records.
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// - tidAndNames: table ids and names of which will be unlocked.
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// - pidAndNames: partition ids and names of which will be unlocked.
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// Return the message of skipped tables and error.
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func (h *Handle) RemoveLockedTables(tidAndNames map[int64]string, pidAndNames map[int64]string) (string, error) {
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se, err := h.pool.Get()
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if err != nil {
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return "", errors.Trace(err)
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}
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defer h.pool.Put(se)
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exec := se.(sqlexec.RestrictedSQLExecutor)
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return lockstats.RemoveLockedTables(exec, tidAndNames, pidAndNames)
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}
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// RemoveLockedPartitions remove partitions from table locked records.
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// - tid: table id of which will be unlocked.
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// - tableName: table name of which will be unlocked.
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// - pidNames: partition ids of which will be unlocked.
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// Note: If the whole table is locked, then skip all partitions of the table.
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func (h *Handle) RemoveLockedPartitions(
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tid int64,
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tableName string,
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pidNames map[int64]string,
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) (string, error) {
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se, err := h.pool.Get()
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if err != nil {
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return "", errors.Trace(err)
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}
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defer h.pool.Put(se)
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exec := se.(sqlexec.RestrictedSQLExecutor)
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return lockstats.RemoveLockedPartitions(exec, tid, tableName, pidNames)
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}
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// GetLockedTables returns the locked status of the given tables.
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// Note: This function query locked tables from store, so please try to batch the query.
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func (h *Handle) GetLockedTables(tableIDs ...int64) (map[int64]struct{}, error) {
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tableLocked, err := h.queryLockedTables()
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if err != nil {
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return nil, err
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}
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return lockstats.GetLockedTables(tableLocked, tableIDs...), nil
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}
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// queryLockedTables query locked tables from store.
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func (h *Handle) queryLockedTables() (map[int64]struct{}, error) {
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se, err := h.pool.Get()
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if err != nil {
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return nil, errors.Trace(err)
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}
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defer h.pool.Put(se)
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exec := se.(sqlexec.RestrictedSQLExecutor)
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return lockstats.QueryLockedTables(exec)
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}
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// GetTableLockedAndClearForTest for unit test only.
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func (h *Handle) GetTableLockedAndClearForTest() (map[int64]struct{}, error) {
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return h.queryLockedTables()
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}
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