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Listen Event

A method is provided in Blade to help developers to listen to some of the lifecycles of an application’s runtime. For example, the creation and destruction of Session, after the application is started, and so on. The supported event types are as follows:

public enum EventType {
    SERVER_STARTING,    // server ready to start
    SERVER_STARTED,     // server started successfully
    SERVER_STOPPING,    // when the server is ready to stop
    SERVER_STOPPED,     // server stopped (normal exit)
    SESSION_CREATED,    // when the create a session
    SESSION_DESTROY,    // when the destory a session
    ENVIRONMENT_CHANGED // when the configuration file changes
}

How to use it? very simple, just call the event method of Blade, generally we write at startup.

Blade.of()
  .on(EventType.SESSION_CREATED, e -> {
    Session session = (Session) e.attribute("session");
    // do something
  }).start(Application.class, args);