tidb common 源码

  • 2022-09-19
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tidb common 代码


// Copyright 2021 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,
// See the License for the specific language governing permissions and
// limitations under the License.

package placement

import (

const (
	// TiFlashRuleGroupID is the rule group id of tiflash
	TiFlashRuleGroupID = "tiflash"
	// BundleIDPrefix is the bundle prefix of all rule bundles from TiDB_DDL statements.
	BundleIDPrefix = "TiDB_DDL_"
	// PDBundleID is the bundle name of pd, the default bundle for all regions.
	PDBundleID = "pd"

// GroupID accepts a tableID or whatever integer, and encode the integer into a valid GroupID for PD.
func GroupID(id int64) string {
	return fmt.Sprintf("%s%d", BundleIDPrefix, id)

const (
	// RuleIndexTable is the index for a rule of table.
	RuleIndexTable = 40
	// RuleIndexPartition is the index for a rule of partition.
	RuleIndexPartition = 80
	// RuleIndexTiFlash is the index for a rule of TiFlash.
	RuleIndexTiFlash = 120

const (
	// DCLabelKey indicates the key of label which represents the dc for Store.
	// FIXME: currently we assumes "zone" is the dcLabel key in Store
	DCLabelKey = "zone"
	// EngineLabelKey is the label that indicates the backend of store instance:
	// tikv or tiflash. TiFlash instance will contain a label of 'engine: tiflash'.
	EngineLabelKey = "engine"
	// EngineLabelTiFlash is the label value, which a TiFlash instance will have with
	// a label key of EngineLabelKey.
	EngineLabelTiFlash = "tiflash"
	// EngineLabelTiKV is the label value used in some tests. And possibly TiKV will
	// set the engine label with a value of EngineLabelTiKV.
	EngineLabelTiKV = "tikv"


tidb 源码目录


tidb bundle 源码

tidb constraint 源码

tidb constraints 源码

tidb errors 源码

tidb rule 源码

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