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util.go
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util.go
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// Copyright 2018 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 filter
import (
"strings"
"github.com/pingcap/errors"
"github.com/pingcap/tidb/parser/ast"
)
// AstToDDLEvent returns filter.DDLEvent
func AstToDDLEvent(node ast.StmtNode) EventType {
switch n := node.(type) {
case *ast.CreateDatabaseStmt:
return CreateDatabase
case *ast.DropDatabaseStmt:
return DropDatabase
case *ast.CreateTableStmt:
return CreateTable
case *ast.DropTableStmt:
if n.IsView {
return DropView
}
return DropTable
case *ast.TruncateTableStmt:
return TruncateTable
case *ast.RenameTableStmt:
return RenameTable
case *ast.CreateIndexStmt:
return CreateIndex
case *ast.DropIndexStmt:
return DropIndex
case *ast.AlterTableStmt:
return AlterTable
case *ast.CreateViewStmt:
return CreateView
case *ast.AlterDatabaseStmt:
return AlterDatabase
}
return NullEvent
}
// toEventType converts event type string to EventType and check if it is valid.
func toEventType(es string) (EventType, error) {
event := EventType(strings.ToLower(es))
switch event {
case AllEvent,
AllDDL,
AllDML,
NullEvent,
NoneEvent,
NoneDDL,
NoneDML,
InsertEvent,
UpdateEvent,
DeleteEvent,
CreateDatabase,
DropDatabase,
AlterDatabase,
CreateTable,
DropTable,
TruncateTable,
RenameTable,
CreateIndex,
DropIndex,
CreateView,
DropView,
AlterTable,
AddTablePartition,
DropTablePartition,
TruncateTablePartition:
return event, nil
case CreateSchema: // alias of CreateDatabase
return CreateDatabase, nil
case DropSchema: // alias of DropDatabase
return DropDatabase, nil
case AlterSchema:
return AlterDatabase, nil
default:
return NullEvent, errors.NotValidf("event type %s", es)
}
}