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
}
}