def unregist_name_service(self):
"""
Method: unregist_name_service
Description: 向名字服务中心注销服务
Parameter: 无
Return:
Others:
"""
if self._pid == local_const_def.INVALID_PID:
return
#按pid注销
frame = AppFrame()
frame.set_cmd_code(local_cmd_code.UNREGISTER_NAME_COMMAND)
#向MASTER的Monitor注册
frame.set_receiver_pid(self.get_pid("Monitor", local_const_def.MASTER_PID))
req = name_msg_def.AppUnRegisterRequest()
req.init_all_attr()
req.pid = self._pid
req.need_reponse = False
frame.add_data(req.serialize())
#不用关心结果
rpc_worker.rpc_request(frame, 2)
def _query_from_nameservice(self):
"""
Method: _query_from_nameservice
Description: 从名字服务查询所有注册信息
Parameter: 无
Return:
Others:
"""
frame = AppFrame()
frame.set_cmd_code(local_cmd_code.QUERY_APP_COMMAND)
frame.set_receiver_pid(self.get_pid("Monitor", local_const_def.MASTER_PID))
req = name_msg_def.AppQueryRequest()
req.init_all_attr()
frame.add_data(req.serialize())
ack_frames = rpc_worker.rpc_request(frame, 10)
all_app_infos = []
if len(ack_frames)==0:
return all_app_infos
#这里不需要捕获异常
rep = name_msg_def.AppQueryResponse.deserialize(ack_frames[0].get_data())
if rep.return_code==0:
all_app_infos = rep.app_infos
return all_app_infos
def _shakehand_with_monitor(self, statflag):
"""
Method: _shakehand_with_monitor
Description: 与monitor握手一次
Parameter:
statflag: 握手消息中带的状态
Return:
-1: 握手失败
0: monitor返回握手应答，应答中带有stop消息
1: 握手成功
Others:
"""
if not self._is_need_shake_with_monitor():
return 1
frame = AppFrame()
frame.set_cmd_code(local_cmd_code.CMD_SHAKEHAND_WITH_MONITOR)
#和本机Monitor握手
frame.set_receiver_pid(self.get_pid("Monitor", local_const_def.ONLYLOCAL_PID))
frame.add_data(self._instance_name)
frame.add_data(statflag)
ack_frames = rpc_worker.rpc_request(frame, 2)
if len(ack_frames) == 0:
self.__shakehandl_failed_count += 1
if self.__shakehandl_failed_count >= 3:
tracelog.error("shake hand with monitor failed.")
self.stop()
return -1
self.__shakehandl_failed_count = 0
ack_frame = ack_frames[0]
rst = ack_frame.get_data(0)
if rst == BasicApp.SHAKEHANDACK_STOP:
tracelog.info("receive stop event from monitor.")
self.stop()
return 0
return 1
def notify_monitor_stop_event(self):
"""
Method: notify_monitor_stop_event
Description: 通知monitor当前进程将要停止了
Parameter: 无
Return:
Others:
"""
if not self._is_need_shake_with_monitor():
return
if self.__ipc_send_work is None:
return
try:
frame = AppFrame()
frame.set_cmd_code(local_cmd_code.CMD_SHAKEHAND_WITH_MONITOR)
frame.add_data(self._instance_name)
frame.add_data(BasicApp.SHAKEHAND_STOPPING)
frame.set_receiver_pid(self.get_pid("Monitor", local_const_def.ONLYLOCAL_PID))
self.dispatch_frame_to_process_by_pid(frame.get_receiver_pid(), frame)
except:
tracelog.exception("notify_monitor_stop_event failed.")
