feat: 优化 DB.py 和 dump_keyword_title.py，增强数据处理和日志记录功能

DB.py

@@ -64,7 +64,6 @@ video = Table("sh_dm_video_v2", _meta,
               )
 
 
-
 def mysql_retry(max_retries: int = 3, base_delay: float = 2.0):
     """
     装饰器工厂：捕获 InterfaceError 后断线重连并重试，
@@ -370,6 +369,35 @@ class DBVidcon:
         self.cursor.execute(sql, (level,))
         return self.cursor.fetchall()
 
+    @mysql_retry()
+    def log_batch_start(self, info: Dict) -> int or None:
+        batch = info.get("batch")
+        level = info.get("level")
+        if batch is None or level is None:
+            raise ValueError("info 字典必须包含 'batch' 和 'level'")
+        count = info.get("count", 0)
+        if level == 0:
+            t0, t1, t2 = count, 0, 0
+        elif level == 1:
+            t0, t1, t2 = 0, count, 0
+        elif level == 9:
+            level = 2
+            t0, t1, t2 = 0, 0, count
+
+        start_ts = int(time.time())
+        sql = """
+            INSERT INTO sh_dm_batch_log
+                (batch, info, t0, t1, t2, starttime)
+            VALUES (%s, %s, %s, %s, %s, %s)
+        """
+        try:
+            self.cursor.execute(sql, (batch, level, t0, t1, t2, start_ts))
+            self.conn.commit()
+            return self.cursor.lastrowid
+        except Exception as e:
+            print(f"[log_batch_start] 插入失败：{e}")
+            return None
+
     @mysql_retry()
     def flush(self):
         """批量执行完后手动提交。"""
@@ -411,16 +439,26 @@ class DBVidcon:
     @redis_retry(max_retries=3)
     def queues_empty(self) -> bool:
         """
-        判断 urgent_list_key 和 list_key 两个队列是否都为空。
         如果都空，返回 True；只要有一个不空，就返回 False。
         """
-        # 注意：redis.llen 返回 int
         return (
                 self.redis.llen(self.l0_list_key) == 0
                 and self.redis.llen(self.l1_list_key) == 0
                 and self.redis.llen(self.l2_list_key) == 0
         )
 
+    @redis_retry()
+    def l0_empty(self) -> bool:
+        return self.redis.llen(self.l0_list_key) == 0
+
+    @redis_retry()
+    def l1_empty(self) -> bool:
+        return self.redis.llen(self.l1_list_key) == 0
+
+    @redis_retry()
+    def l2_empty(self) -> bool:
+        return self.redis.llen(self.l2_list_key) == 0
+
     @redis_retry(max_retries=3)
     def pop_error_item(self):
         """

dump_keyword_title.py

@@ -14,19 +14,26 @@ def main():
     args   = parse_args()
     batch  = int(time.time())
     db     = DBVidcon()
-
-    rows = db.fetch_keyword_title(level=args.level)
-    payload_list = []
     push   = None
+    empty  = None
+
     if args.level == 0:
         push = db.push_l0
+        empty = db.l0_empty
     elif args.level == 1:
         push = db.push_l1
+        empty = db.l1_empty
     elif args.level == 9:
         push = db.push_l2
+        empty = db.l2_empty
     else:
         return
 
+    if empty():
+        rows = db.fetch_keyword_title(level=args.level)
+        payload_list = []
+
+
         for row in rows:
             payload_list.append(json.dumps({**row, "batch": batch}, ensure_ascii=False))
             if len(payload_list) >= 10000:
@@ -35,6 +42,12 @@ def main():
         if payload_list:          # 收尾
             push(payload_list)
 
+        data = {
+            "level": args.level,
+            "batch": batch,
+            "count": len(rows),
+        }
+        db.log_batch_start(data)
         print(f"✔ 推送 {len(rows)} 行（batch={batch}）到 {push.__name__}队列完毕")
     db.close()