增强稳定性，使用线程实时读取PLC中db_100中的数据并存储起来，read_generic从存储的文件中读取

gateway/main.py

@@ -6,10 +6,12 @@ from plc_manager import PLCManager
 from cache_manager import CacheManager
 from api_server import APIServer
 from config_manager import ConfigManager
+from db100_reader import DB100ReaderThread
+
 
 class GatewayApp:
     """PLC网关应用程序主类"""
-    
+
     def __init__(self, config_path="../config/config.json"):
         self.config_path = config_path
         self.config_manager = ConfigManager(config_path)
@@ -18,35 +20,38 @@ class GatewayApp:
         self.api_server = None
         self.reload_flag = False
         self.reload_lock = threading.Lock()
+        # DB100ReaderThread线程相关初始化
+        self.db100_reader_thread = None
+
         self.logger = logging.getLogger("GatewayApp")
-        
+
         # 加载初始配置
         self.load_configuration()
-    
+
     def load_configuration(self):
         """加载配置并初始化组件"""
         # 加载配置
         if not self.config_manager.load_config():
             self.logger.error("Failed to load initial configuration")
             return False
-        
+
         config = self.config_manager.get_config()
-        
+
         # 重新初始化PLC连接
         if self.plc_manager:
             self.logger.info("Reinitializing PLC connections...")
         self.plc_manager = PLCManager(config["plcs"])
         self.plc_manager.connect_all()
-        
+
         # 重新初始化缓存
         if self.cache_manager:
             self.logger.info("Stopping existing cache manager...")
             self.cache_manager.stop()
-        
+
         self.logger.info("Initializing cache manager...")
         self.cache_manager = CacheManager(config, self.plc_manager, app=self)
         self.cache_manager.start()
-        
+
         # 重新初始化API服务器
         if self.api_server:
             self.logger.info("API server already running")
@@ -54,10 +59,18 @@ class GatewayApp:
             self.logger.info("Starting API server...")
             self.api_server = APIServer(self.cache_manager, self.config_path)
             self.api_server.start()
-        
+
+        # 重新初始化DB100ReaderThread线程
+        for plc in config["plcs"]:
+            plc_name = plc["name"]
+            client = self.plc_manager.get_plc(plc_name)
+        self.logger.info("Starting db100_reader_thread...")
+        self.db100_reader_thread = DB100ReaderThread(client, output_file="db100_latest_data.log")
+        self.db100_reader_thread.start()
+
         self.logger.info("Configuration loaded successfully")
         return True
-    
+
     def check_for_reload(self):
         """检查是否需要重载配置"""
         while True:
@@ -66,22 +79,22 @@ class GatewayApp:
                     self.reload_flag = False
                     self.load_configuration()
             time.sleep(1)
-    
+
     def request_reload(self):
         """请求重载配置"""
         with self.reload_lock:
             self.reload_flag = True
         self.logger.info("Configuration reload requested")
-    
+
     def run(self):
         """运行主程序"""
         logging.basicConfig(
             level=logging.INFO,
             format='%(asctime)s - %(threadName)s - %(name)s - %(levelname)s - %(message)s'
         )
-        
+
         self.logger.info("Starting PLC Gateway...")
-        
+
         # 启动配置重载检查线程
         reload_thread = threading.Thread(
             target=self.check_for_reload,
@@ -89,7 +102,7 @@ class GatewayApp:
             daemon=True
         )
         reload_thread.start()
-        
+
         try:
             # 保持主程序运行
             while True:
@@ -101,9 +114,11 @@ class GatewayApp:
                 self.cache_manager.stop()
             self.logger.info("Shutdown complete")
 
+
 def main():
     app = GatewayApp()
     app.run()
 
+
 if __name__ == "__main__":
     main()