modify: 解决 message_item result 字段重复序列化问题

src/queue_sqlite/queue_operation/queue_operation.py

@@ -8,11 +8,11 @@ from ..core import core
 from ..constant import MessageStatus
 
 
-class QueueOperation():
+class QueueOperation:
     def __init__(self, shard_num: int = 4, queue_name: str = "default"):
         self.shard_num = shard_num
         self.db_dir = os.path.join("cache", queue_name)
-        self.shard_connections  = threading.local()
+        self.shard_connections = threading.local()
         if not os.path.exists(self.db_dir):
             os.makedirs(self.db_dir)
         self.init_shards()
@@ -103,9 +103,9 @@ class QueueOperation():
         conn.update_status(message_id, status)
 
     # 更新消息结果
-    def update_result(self, message_id: str, result: dict):
+    def update_result(self, message_id: str, result: str):
         conn = self._get_shard_conn(self._get_shard_index(message_id))
-        conn.update_result(message_id, json.dumps(result))
+        conn.update_result(message_id, result)
 
     # 删除消息
     def delete_message(self, message_id: str):
@@ -121,4 +121,3 @@ class QueueOperation():
     def clean_expired_messages(self, shard_index: int):
         conn = self._get_shard_conn(shard_index)
         conn.clean_expired_messages()
-            

src/queue_sqlite/scheduler/task_scheduler.py

@@ -30,11 +30,11 @@ class TaskScheduler:
             task_cycle = TaskCycle(message, task_function)
             task_cycle.run()
 
-            message.status = task_cycle.get_task_status() # type: ignore
+            message.status = task_cycle.get_task_status()  # type: ignore
             if message.status == MessageStatus.FAILED:
                 message.result = {"error": task_cycle.get_task_error()}
             else:
-                message.result = task_cycle.get_task_result() # type: ignore
+                message.result = task_cycle.get_task_result()  # type: ignore
             message.updatetime = datetime.now()
         except Exception as e:
             message.status = MessageStatus.FAILED
@@ -55,13 +55,15 @@ class TaskScheduler:
         """单一轮询线程，并行执行任务"""
         while self.is_running:
             try:
-                message_list = self.queue_operation.dequeue(size=self.task_thread_num * 2)
+                message_list = self.queue_operation.dequeue(
+                    size=self.task_thread_num * 2
+                )
                 if message_list:
                     # 并行处理所有获取到的消息
                     for message in message_list:
                         self.executor.submit(
                             lambda m: self._update_result(self._process_message(m)),
-                            MessageItem.from_dict(message)
+                            MessageItem.from_dict(message),
                         )
                 else:
                     time.sleep(0.1)  # 适当休眠

tests/test_message_item.py

@@ -1,4 +1,5 @@
 from queue_sqlite.model import MessageItem
+import json
 
 
 class TestMessageItem:
@@ -15,4 +16,46 @@ class TestMessageItem:
     @classmethod
     def test_from_dict(cls):
         messageItem = MessageItem.from_dict(cls.messageItem.to_dict())
+        data = {
+            "id": "ddb66277-503c-4921-8e7f-5091eace49e3",
+            "type": "task",
+            "status": 2,
+            "content": '{"num": 1}',
+            "createtime": "2025-09-12T18:41:08.221531",
+            "updatetime": "2025-09-12T18:41:08.221531",
+            "result": '"{\\"message\\": \\"\\\\u6d4b\\\\u8bd5\\\\u6210\\\\u529f\\"}"',
+            "priority": 1,
+            "source": "client",
+            "destination": "test",
+            "retry_count": 0,
+            "expire_time": "null",
+            "tags": "null",
+            "metadata": "{}",
+        }
         print(messageItem.to_dict())
+        print(MessageItem.from_dict(data).to_dict())
+
+    @classmethod
+    def test_from_json(cls):
+        json_str = """
+        {
+            "content": {
+                "num": 1
+            },
+            "createtime": "2025-09-12T16:42:50.663248",
+            "destination": "test",
+            "expire_time": null,
+            "id": "b83c3d72-0b06-4c34-ab4f-32d696aa3875",
+            "metadata": {},
+            "priority": 1,
+            "result": "{\"message\": \"\\u6d4b\\u8bd5\\u6210\\u529f\"}",
+            "retry_count": 0,
+            "source": "client",
+            "status": 2,
+            "tags": null,
+            "type": "task",
+            "updatetime": "2025-09-12T16:42:50.663248"
+        }
+        """
+        messageItem = MessageItem.from_dict(json.loads(json_str))
+        print(messageItem.to_json())