The ideal solution would be to wait on a JAMS message, or to query an indicator that indicates updated power data is available, and then perform the GET.
At the start of inbound message processing, the system availability indicator is set to "true", indicating that the endpoint system is available.
在入站消息处理的开始阶段，系统可用性指示器被设置为“true”，表示端点系统是可用的。
3
At the start of each iteration, the system availability indicator determines whether to retrieve the next message for processing, or to suspend processing by scheduling a Human Task.