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@echo off
rem ========== 可维护参数 ==========
set SRC_HOST=127.0.0.1
set SRC_PORT=3306
set SRC_USER=root
set SRC_PWD=SrcPass
set SRC_DB=src_db

set DST_HOST=127.0.0.1
set DST_PORT=3307
set DST_USER=root
set DST_PWD=DstPass
set DST_DB=dst_db

set MYSQL_HOME=C:\Program Files\MySQL\MySQL Server 8.0
set BAK_DIR=C:\scripts\backup
set LOG_DIR=C:\scripts\logs
rem =================================

:: 1. 生成带时分秒的文件名
set NOW=%date:~0,4%%date:~5,2%%date:~8,2%-%time:~0,2%%time:~3,2%%time:~6,2%
set NOW=%NOW: =0%          &:: 补零（处理 08:09:05 中的空格）
set SQL_FILE=%BAK_DIR%\%SRC_DB%_%NOW%.sql
set LOG_FILE=%LOG_DIR%\mysql_sync_%date:~0,4%%date:~5,2%%date:~8,2%.log

:: 2. 确保目录存在
if not exist "%BAK_DIR%" md "%BAK_DIR%"
if not exist "%LOG_DIR%" md "%LOG_DIR%"

echo === %date% %time% 开始同步 [%SRC_DB%] -> [%DST_DB%] === >> "%LOG_FILE%"
echo           备份文件: %SQL_FILE% >> "%LOG_FILE%"

:: 3. 导出
"%MYSQL_HOME%\bin\mysqldump" -h%SRC_HOST% -P%SRC_PORT% -u%SRC_USER% -p"%SRC_PWD%" ^
     --single-transaction --routines --triggers --events --databases %SRC_DB% ^
     > "%SQL_FILE%"
if errorlevel 1 (
   echo === %date% %time% 导出失败 === >> "%LOG_FILE%"
   exit /b 1
)

:: 4. 导入
"%MYSQL_HOME%\bin\mysql" -h%DST_HOST% -P%DST_PORT% -u%DST_USER% -p"%DST_PWD%" ^
     %DST_DB% < "%SQL_FILE%"
if errorlevel 1 (
   echo === %date% %time% 导入失败 === >> "%LOG_FILE%"
   exit /b 1
)

echo === %date% %time% 同步完成 === >> "%LOG_FILE%"