MySQL을 사용하여 Go 언어로 데이터 복제 및 동기화 구현

go get -u github.com/go-sql-driver/mysql 

import (
    "database/sql"
    _ "github.com/go-sql-driver/mysql"
)

func connectDB() error {
    var err error
    db, err = sql.Open("mysql", "username:password@tcp(address:port)/database")
    if err != nil {
        log.Printf("连接数据库失败：%s", err.Error())
        return err
    }
    return nil
}

func getTables() ([]string, error) {
    rows, err := db.Query("show tables")
    if err != nil {
        log.Printf("查询表失败：%s", err.Error())
        return nil, err
    }
    var tables []string
    for rows.Next() {
        var table string
        err = rows.Scan(&table)
        if err != nil {
            log.Printf("获取表名失败：%s", err.Error())
            continue
        }
        tables = append(tables, table)
    }
    return tables, nil
}

func copyData() {
    tables, err := getTables()
    if err != nil {
        return
    }
    var wg sync.WaitGroup
    for _, table := range tables {
        wg.Add(1)
        go func(table string) {
            defer wg.Done()
            rows, err := db.Query(fmt.Sprintf("select * from %s", table))
            if err != nil {
                log.Printf("查询表失败：%s", err.Error())
                return
            }
            for rows.Next() {
                // 复制数据到指定的位置
            }
        }(table)
    }
    wg.Wait()
}

func syncData() {
    statements, err := getSyncStatements()
    if err != nil {
        return
    }
    var wg sync.WaitGroup
    for _, statement := range statements {
        wg.Add(1)
        go func(s string) {
            defer wg.Done()
            _, err := db.Exec(s)
            if err != nil {
                log.Printf("同步数据失败：%s", err.Error())
            }
        }(statement)
    }
    wg.Wait()
}