Event notification method, event notification device, and storage medium

An event notification device, comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• receive, from a requesting source of an event, an event notification request for requesting notification of the event, the event notification request including event notification condition information including a notification condition of the event and priority information indicating a priority of notification of the event,
• acquire the event from a publishing source of the event,
• determine whether to perform synchronous delivery of the event based on the notification condition, and
• notify the source of the request of the event in an order of priority identified based on the priority information, when it is determined that synchronous delivery of the event be performed.

A non-transitory computer-readable storage medium storing a program that causes one or more processors included in a computer to execute a process, the process comprising:

• receiving, from a requesting source of an event, an event notification request for requesting notification of the event, the event notification request including event notification condition information including a notification condition of the event and priority information indicating a priority of notification of the event;
• acquiring the event from a publishing source of the event;
• determining whether to perform synchronous delivery of the event based on the notification condition;
• and
• notifying the requesting source of the event in an order of priority identified based on the priority information, when it is determined that synchronous delivery of the event be performed.