a1c8a572bd
- Added detailed logging functionality to init_full_sync.py and run_incremental_sync.py for better tracking of synchronization processes. - Updated configuration mappings in config.py to include additional Access database tables. - Improved error handling and user feedback in vbareplace.py, including the ability to refresh linked tables in Access. - Adjusted polling intervals and batch sizes for performance optimization.
206 lines
8.2 KiB
Python
206 lines
8.2 KiB
Python
import time
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import os
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import sys
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import pyodbc
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import config
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import db_utils
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import logging
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from logging.handlers import TimedRotatingFileHandler
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# ================= 日志系统配置 =================
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def setup_logger():
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log_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'log')
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if not os.path.exists(log_dir):
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os.makedirs(log_dir)
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logger = logging.getLogger("SyncService")
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logger.setLevel(logging.INFO)
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logger.handlers = []
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log_file_path = os.path.join(log_dir, 'sync_service.log')
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file_handler = TimedRotatingFileHandler(
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log_file_path, when='midnight', interval=1, backupCount=30, encoding='utf-8'
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)
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file_handler.suffix = "%Y-%m-%d"
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file_fmt = logging.Formatter('%(asctime)s - [%(levelname)s] - %(message)s')
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file_handler.setFormatter(file_fmt)
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console_handler = logging.StreamHandler(sys.stdout)
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console_fmt = logging.Formatter('%(asctime)s - %(message)s', datefmt='%H:%M:%S')
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console_handler.setFormatter(console_fmt)
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logger.addHandler(file_handler)
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logger.addHandler(console_handler)
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return logger
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logger = setup_logger()
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# ================= 主逻辑 =================
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def process_sync_task():
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"""
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逻辑重构：
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遍历 config.SYNC_MAPPING 中的每一个文件 -> 去日志表查询该文件下特定表的未同步记录。
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"""
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sql_conn = db_utils.get_sql_conn()
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sql_cursor = sql_conn.cursor()
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sql_cursor.fast_executemany = True # 高性能开关
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# 标记是否有工作被处理（用于控制轮询休眠时间）
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work_done = False
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cols = config.LOG_TABLE_CONFIG
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log_full_name = db_utils.fmt_table(cols['schema'], cols['table_name'])
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try:
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# === 核心循环：以配置文件为驱动 ===
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for clean_path, tables_map in config.SYNC_MAPPING.items():
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# 1. 准备查询条件
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# 获取该文件下所有需要同步的表名列表
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target_tables = list(tables_map.keys())
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if not target_tables:
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continue
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# 构造 TableAddress 的精确匹配条件
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# VBA 逻辑：网络路径带 ";DATABASE=", 本地路径带 "LOCAL:"
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# 我们直接构造这两个字符串，让 SQL Server 做精确匹配，效率极高
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# 注意：将路径转为 Windows 标准反斜杠
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win_path = os.path.normpath(clean_path)
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addr_candidates = [
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f";DATABASE={win_path}", # 情况1
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f"LOCAL={win_path}", # 情况2 (注意 VBA 代码里可能是 LOCAL: 或 LOCAL=，请核对)
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f"LOCAL:{win_path}", # 情况3
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win_path # 情况4 (兼容没有前缀的情况)
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]
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# 2. 构造动态 SQL 查询
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# WHERE Synced=0 AND Address IN (...) AND TableName IN (...)
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placeholders_addr = ','.join(['?'] * len(addr_candidates))
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placeholders_tbl = ','.join(['?'] * len(target_tables))
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query_log = f"""
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SELECT TOP 1000
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{cols['col_log_id']},
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{cols['col_table_name']},
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{cols['col_record_id']}
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FROM {log_full_name}
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WHERE {cols['col_synced']} = 0
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AND TableType = 'LINKED_ACCESS'
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AND {cols['col_address']} IN ({placeholders_addr})
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AND {cols['col_table_name']} IN ({placeholders_tbl})
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ORDER BY {cols['col_log_id']} ASC
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"""
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# 参数列表：先放地址，再放表名
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params = addr_candidates + target_tables
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sql_cursor.execute(query_log, params)
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logs = sql_cursor.fetchall()
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if not logs:
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continue # 这个文件没有需要同步的记录，检查下一个文件
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work_done = True # 标记有工作
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logger.info(f"📂 文件 {os.path.basename(clean_path)} 发现 {len(logs)} 条变更...")
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# 3. 本地分组 (按表名)
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# 结构: table_tasks[TableName] = { ids: {}, log_ids: [] }
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table_tasks = {}
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for row in logs:
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log_id, acc_table, record_id = row
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if acc_table not in table_tasks:
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table_tasks[acc_table] = {'record_ids': set(), 'log_ids': []}
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table_tasks[acc_table]['record_ids'].add(record_id)
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table_tasks[acc_table]['log_ids'].append(log_id)
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# 4. 执行同步 (连接一次 Access，处理多张表)
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if not os.path.exists(clean_path):
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logger.error(f"无法访问文件: {clean_path}")
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continue
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try:
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acc_conn = db_utils.get_access_conn(clean_path)
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acc_cursor = acc_conn.cursor()
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except Exception as conn_err:
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logger.error(f"连接 Access 失败: {conn_err}")
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continue
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for acc_table, data in table_tasks.items():
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record_ids = list(data['record_ids'])
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log_ids = data['log_ids']
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# 读取目标配置
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target_conf = tables_map[acc_table]
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target_schema = target_conf['target_schema']
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target_table = target_conf['target_table']
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pk_col = target_conf['pk_col']
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target_full_name = db_utils.fmt_table(target_schema, target_table)
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try:
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# --- A. Access 查新数据 ---
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ids_placeholders = ','.join(['?'] * len(record_ids))
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acc_sql = f"SELECT * FROM [{acc_table}] WHERE [{pk_col}] IN ({ids_placeholders})"
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acc_cursor.execute(acc_sql, record_ids)
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new_rows = acc_cursor.fetchall()
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acc_cols = [col[0] for col in acc_cursor.description]
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# --- B. SQL Server 删旧插新 (事务) ---
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# 1. 删除
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del_sql = f"DELETE FROM {target_full_name} WHERE [{pk_col}] IN ({ids_placeholders})"
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sql_cursor.execute(del_sql, record_ids)
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# 2. 插入
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if new_rows:
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insert_sql = db_utils.generate_insert_sql(target_schema, target_table, acc_cols)
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try: sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} ON")
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except: pass
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sql_cursor.executemany(insert_sql, new_rows)
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try: sql_cursor.execute(f"SET IDENTITY_INSERT {target_full_name} OFF")
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except: pass
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# 3. 标记日志 Synced = 1
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log_placeholders = ','.join(['?'] * len(log_ids))
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update_log_sql = f"""
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UPDATE {log_full_name}
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SET {cols['col_synced']} = 1
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WHERE {cols['col_log_id']} IN ({log_placeholders})
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"""
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sql_cursor.execute(update_log_sql, log_ids)
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sql_conn.commit()
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logger.info(f" -> {target_table} 同步成功: {len(record_ids)} 条")
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except Exception as tbl_err:
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logger.error(f" -> 处理表 {acc_table} 异常: {tbl_err}")
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sql_conn.rollback()
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acc_conn.close() # 关闭 Access 连接
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return work_done
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except Exception as e:
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logger.critical(f"全局严重异常: {e}")
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return False
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finally:
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try: sql_conn.close()
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except: pass
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if __name__ == "__main__":
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logger.info("=== 增量同步服务启动 (配置驱动模式) ===")
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logger.info("正在按 config.SYNC_MAPPING 轮询...")
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while True:
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try:
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has_work = process_sync_task()
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# 如果有工作，说明可能还有积压，休息短一点(0.1s)
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# 如果没工作，休息标准间隔(5s)
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time.sleep(0.1 if has_work else config.POLL_INTERVAL)
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except KeyboardInterrupt:
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logger.info("服务停止")
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break
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except Exception as e:
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logger.critical(f"主循环崩溃: {e}")
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time.sleep(5) |