为群总结生成增加三次重试机制

- Dify 请求失败时不再立即返回失败
- 群总结生成过程最多重试 3 次
- 增加 2 秒、4 秒递增等待，降低偶发错误影响
- 仅在三次都失败后才返回生成总结失败结果
- 补充重试次数与等待时间日志，便于排查总结异常

plugins/message_summary/main.py

@@ -233,6 +233,10 @@ class MessageSummaryPlugin(MessagePluginInterface):
             "Content-Type": "application/json"
         }
 
+        max_retries = 3
+        retry_delays = [2, 4]
+
+        for attempt in range(1, max_retries + 1):
             try:
                 custom_timeout = ClientTimeout(total=None, connect=10, sock_read=300)
                 conn = aiohttp.TCPConnector(keepalive_timeout=60)  # 保持连接活跃
@@ -241,7 +245,7 @@ class MessageSummaryPlugin(MessagePluginInterface):
                         response.raise_for_status()  # 检查请求是否成功
                         response_data = await response.json()
 
-                    self.LOG.info(f"Dify API响应状态码: {response.status}")
+                        self.LOG.info(f"Dify API响应状态码: {response.status}, attempt={attempt}")
                         self.LOG.debug(f"响应数据: {json.dumps(response_data, ensure_ascii=False, indent=2)}")
 
                         # 提取回答内容
@@ -286,16 +290,18 @@ class MessageSummaryPlugin(MessagePluginInterface):
                         return answer, spath
 
             except aiohttp.ClientError as e:
-            self.LOG.error(f"请求Dify API时出错: {e}")
+                self.LOG.error(f"请求Dify API时出错: attempt={attempt}/{max_retries}, error={e}")
-            return f"生成总结时出错", None
-
             except json.JSONDecodeError as e:
-            self.LOG.error(f"解析Dify API响应时出错: {e}")
+                self.LOG.error(f"解析Dify API响应时出错: attempt={attempt}/{max_retries}, error={e}")
-            return "解析API响应时出错", None
-
             except Exception as e:
-            self.LOG.error(f"处理总结时出现未知错误: {e}")
+                self.LOG.error(f"处理总结时出现未知错误: attempt={attempt}/{max_retries}, error={e}")
-            return f"生成总结时出现未知错误", None
+
+            if attempt < max_retries:
+                delay = retry_delays[attempt - 1] if attempt - 1 < len(retry_delays) else retry_delays[-1]
+                self.LOG.warning(f"群总结生成失败，准备重试: attempt={attempt}/{max_retries}, delay={delay}s")
+                await asyncio.sleep(delay)
+
+        return "生成总结时出错", None
 
     async def daily_summary_job(self):
         """定时任务：每天早上9点总结昨天的聊天信息"""