#!/usr/bin/env python3 # _*_ coding:utf8 _*_ from pymysqlreplication import BinLogStreamReader from pymysqlreplication.row_event import (DeleteRowsEvent,UpdateRowsEvent,WriteRowsEvent,) MYSQL_SETTINGS = { "host": "127.0.0.1", "port": 3306, "user": "root", "passwd": "123456"} def main(): stream = BinLogStreamReader(connection_settings=MYSQL_SETTINGS,server_id=5, blocking=True, only_events=[DeleteRowsEvent, WriteRowsEvent, UpdateRowsEvent]) try: for binlogevent in stream: for row in binlogevent.rows: if isinstance(binlogevent, DeleteRowsEvent): info = dict(row["values"].items()) ##如果有主键 print("DELETE FROM `%s`.`%s` WHERE %s = %s ;" %(binlogevent.schema ,binlogevent.table,binlogevent.primary_key,info[binlogevent.primary_key]) ) elif isinstance(binlogevent, UpdateRowsEvent): info_before = dict(row["before_values"].items()) info_after = dict(row["after_values"].items()) info_set = str(info_after).replace(":","=").replace("{","").replace("}","") print("UPDATE `%s`.`%s` SET %s WHERE %s = %s ;"%(binlogevent.schema,binlogevent.table,info_set,binlogevent.primary_key,info_before[binlogevent.primary_key] ) ) elif isinstance(binlogevent, WriteRowsEvent): info = dict(row["values"].items()) print("INSERT INTO %s.%s(%s)VALUES%s ;"%(binlogevent.schema,binlogevent.table , ','.join(info.keys()) ,str(tuple(info.values())) ) ) except Exception, e: print(e) finally: stream.close() if __name__ == "__main__": main() ''' BinLogStreamReader()参数 ctl_connection_settings:集群保存模式信息的连接设置 resume_stream:从位置或binlog的最新事件或旧的可用事件开始 log_file:设置复制开始日志文件 log_pos:设置复制开始日志pos(resume_stream应该为true) auto_position:使用master_auto_position gtid设置位置 blocking:在流上读取被阻止 only_events:允许的事件数组 ignored_events:被忽略的事件数组 only_tables:包含要观看的表的数组(仅适用于binlog_format ROW) ignored_tables:包含要跳过的表的数组 only_schemas:包含要观看的模式的数组 ignored_schemas:包含要跳过的模式的数组 freeze_schema:如果为true,则不支持ALTER TABLE。速度更快。 skip_to_timestamp:在达到指定的时间戳之前忽略所有事件。 report_slave:在SHOW SLAVE HOSTS中报告奴隶。 slave_uuid:在SHOW SLAVE HOSTS中报告slave_uuid。 fail_on_table_metadata_unavailable:如果我们无法获取有关row_events的表信息,应该引发异常 slave_heartbeat:(秒)主站应主动发送心跳连接。这也减少了复制恢复时GTID复制的流量(在许多事件在binlog中跳过的情况下)。请参阅mysql文档中的MASTER_HEARTBEAT_PERIOD以了解语义 '''