feat: 添加 l0、l1 和 l2 队列的推送方法，优化数据处理流程

DB.py

@@ -129,6 +129,30 @@ class DBVidcon:
                 continue
         return out
 
+    @redis_retry(max_retries=3)
+    def push_l0(self, raws):
+        """向 l0（加急）队列写入数据"""
+        if isinstance(raws, str):
+            raws = [raws]
+        self.redis.lpush(self.l0_list_key, *raws)
+        print(f"[写入l0] 已推入 {len(raws)} 条")
+
+    @redis_retry(max_retries=3)
+    def push_l1(self, payloads):
+        """向 l1（普通）队列写入数据"""
+        if isinstance(payloads, str):
+            payloads = [payloads]
+        self.redis.rpush(self.l1_list_key, *payloads)
+        print(f"[写入l1] 已推入 {len(payloads)} 条")
+
+    @redis_retry(max_retries=3)
+    def push_l2(self, raws):
+        """向 l2（低优先）队列写入数据"""
+        if isinstance(raws, str):
+            raws = [raws]
+        self.redis.lpush(self.l2_list_key, *raws)
+        print(f"[写入l2] 已推入 {len(raws)} 条")
+
     @mysql_retry()
     def get_proxy_agent_dict(self) -> dict:
         sql = "SELECT rn, parameter FROM proxy_agent"
@@ -175,8 +199,6 @@ class DBVidcon:
 
     @redis_retry(max_retries=3)
     def rollback_l1(self, payloads):
-        if not payloads:
-            return
         if isinstance(payloads, str):
             payloads = [payloads]
         self.redis.rpush(self.l1_list_key, *payloads)