def _pre_exit(self):
"""
Method: _pre_exit
Description: monitor退出前的处理函数，停止其他进程
Parameter: 无
Return:
Others:
"""
ProcessStatMgr.set_sys_to_stop()
for i in xrange(30):
if ProcessStatMgr.is_all_process_stoped():
break
time.sleep(1)
print "."
else:
ProcessStatMgr.force_stop_all_process()
# BasicApp._pre_exit中注销了当前进程的名字服务，导致其他app无法与monitor握手退出
bf.BasicApp._pre_exit(self)
if self.__name_manage_worker is not None:
self.__name_manage_worker.close_mit_and_name_srv()
if self.__cluster_node is not None:
self.__cluster_node.stop()
def on_cluster_state_change(self, old_role, old_stats, new_role, new_state, master_ip):
# 发送事件
if new_role == cluster.CLUSTER_ROLE_MASTER and old_role != cluster.CLUSTER_ROLE_MASTER:
self.__send_cluster_event("event.Cluster.be_master", master_ip)
self._name_master_ip = master_ip
#print "on_cluster_state_change!!!", master_ip, self.__name_manage_worker
if self.__name_manage_worker is not None:
self.__name_manage_worker.set_cluster_master_ip(master_ip)
self.__name_manage_worker.set_cluster_role(new_role == cluster.CLUSTER_ROLE_MASTER)
# 重新注册名字服务
if self.get_my_pid() != bf.INVALID_PID: # 防止正在启动过程中主线程正在注册名字服务
ret = self.regist_name_service()
if ret != 0:
tracelog.error("regist name service failed when cluster state changed. stop now."
"new master:%s" % (master_ip))
self.stop()
return
if new_role == cluster.CLUSTER_ROLE_MASTER:
if new_state == cluster.CLUSTER_STATE_ONLY_MASTER:
ProcessStatMgr.set_ha_master(True)
else:
ProcessStatMgr.set_ha_master(False)
else:
ProcessStatMgr.set_ha_slave()
# 重启所有的进程
ProcessStatMgr.set_sys_to_restart()
def on_master_change(self, old_master_ip, new_master_ip):
#print "on_master_change!!!", new_master_ip
self._name_master_ip = new_master_ip
if self.__name_manage_worker is not None:
self.__name_manage_worker.set_cluster_master_ip(new_master_ip)
# 重新注册名字服务
if self.get_my_pid() != bf.INVALID_PID: # 防止正在启动过程中主线程正在注册名字服务
ret = self.regist_name_service()
if ret != 0:
tracelog.error("regist name service failed when master changed. stop now."
"new master:%s" % (new_master_ip))
self.stop()
return
# 重启所有的进程
ProcessStatMgr.set_sys_to_restart()
