tidb schema 源码
tidb schema 代码
文件路径：/util/filter/schema.go
// Copyright 2022 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 filter
import (
"strings"
)
var (
// DMHeartbeatSchema is the heartbeat schema name
DMHeartbeatSchema = "DM_HEARTBEAT"
// DMHeartbeatTable is heartbeat table name
DMHeartbeatTable = "HEARTBEAT"
// InformationSchemaName is the `INFORMATION_SCHEMA` database name.
InformationSchemaName = "INFORMATION_SCHEMA"
// PerformanceSchemaName is the `PERFORMANCE_SCHEMA` database name.
PerformanceSchemaName = "PERFORMANCE_SCHEMA"
// MetricSchemaName is the `METRICS_SCHEMA` database name.
MetricSchemaName = "METRICS_SCHEMA"
// InspectionSchemaName is the `INSPECTION_SCHEMA` database name
InspectionSchemaName = "INSPECTION_SCHEMA"
)
// IsSystemSchema checks whether schema is system schema or not.
// case insensitive
func IsSystemSchema(schema string) bool {
schema = strings.ToUpper(schema)
switch schema {
case DMHeartbeatSchema, // do not create table in it manually
"SYS", // https://dev.mysql.com/doc/refman/8.0/en/sys-schema.html
"MYSQL", // the name of system database.
InformationSchemaName,
InspectionSchemaName,
PerformanceSchemaName,
MetricSchemaName:
return true
default:
return false
}
}
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