// Copyright 2023 The Casdoor Authors. All Rights Reserved. // // 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 sync import ( "fmt" "github.com/go-mysql-org/go-mysql/canal" "github.com/xorm-io/xorm" ) type Database struct { host string port int database string username string password string engine *xorm.Engine serverId uint32 serverUuid string Gtid string canal.DummyEventHandler } func newDatabase(host string, port int, database string, username string, password string) *Database { db := &Database{ host: host, port: port, database: database, username: username, password: password, } dataSourceName := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s", username, password, host, port, database) engine, err := createEngine(dataSourceName) if err != nil { panic(err) } db.engine = engine db.serverId, err = getServerId(engine) if err != nil { panic(err) } db.serverUuid, err = getServerUuid(engine) if err != nil { panic(err) } return db } func (db *Database) getCanalConfig() *canal.Config { // config canal cfg := canal.NewDefaultConfig() cfg.Addr = fmt.Sprintf("%s:%d", db.host, db.port) cfg.Password = db.password cfg.User = db.username // We only care table in database1 cfg.Dump.TableDB = db.database return cfg } func (db *Database) startCanal(targetDb *Database) error { canalConfig := db.getCanalConfig() c, err := canal.NewCanal(canalConfig) if err != nil { return err } gtidSet, err := c.GetMasterGTIDSet() if err != nil { return err } // Register a handler to handle RowsEvent c.SetEventHandler(targetDb) // Start replication err = c.StartFromGTID(gtidSet) if err != nil { return err } return nil }