feat(service): 优化视频生成功能

- 为 video_toDouyin 添加重试机制，最多重试 3 次
- 修改 get_task_result 函数，返回 None 以便于上层处理重试逻辑

service/doudian_service.py

@@ -146,6 +146,10 @@ def generate_video(task: dict):
         ua = headers['user-agent']
         ua = headers['user-agent']
     else:
     else:
         raise Exception('User-Agent not found')
         raise Exception('User-Agent not found')
+    retry_count = 0
+    while True:
+        if retry_count > 3:
+            raise Exception('生成视频失败')
         a_bogus = generate_a_bogus(params, json_data, ua)
         a_bogus = generate_a_bogus(params, json_data, ua)
         params['a_bogus'] = a_bogus
         params['a_bogus'] = a_bogus
         logger.info("开始生成视频")
         logger.info("开始生成视频")
@@ -155,6 +159,9 @@ def generate_video(task: dict):
         logger.info(f"任务id --> {task_id}")
         logger.info(f"任务id --> {task_id}")
         tool_source = response['data']['tool_source']
         tool_source = response['data']['tool_source']
         result = get_task_result(task_id, headers, tool_source, ua, proxies, cookies)
         result = get_task_result(task_id, headers, tool_source, ua, proxies, cookies)
+        if not result:
+            retry_count += 1
+            continue
         return result
         return result
 
 
 def get_task_result(task_id: str, headers: dict, tool_source: str, ua, proxies, cookies):
 def get_task_result(task_id: str, headers: dict, tool_source: str, ua, proxies, cookies):
@@ -186,4 +193,5 @@ def get_task_result(task_id: str, headers: dict, tool_source: str, ua, proxies,
             logger.success(f'视频生成成功-->{result}')
             logger.success(f'视频生成成功-->{result}')
             return result
             return result
         else:
         else:
-            raise Exception(f'任务执行失败-->{msg}')
+            logger.error(f'任务执行失败-->{msg}')
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+            return None
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