Macro init_event_handler

macro_rules! init_event_handler {
    (
		$E:ty,
		$event_handler :expr,
			$(
				$(#[$asynchrony:ident])?
				$event:ty:[$($handler:ident $(=>($($injectable:ident $(( $($arg:ident),* ))? ),*))?),* $(,)? ]
			),*
			$(,)?

    ) => { ... };
}

This macro is used to create event handler for each event.

Example

init_event_handler!(
    YourServiceError,
    |ctx| YourEventHandler(ApplicationRepository::new(ctx)),
    #[async]
    YourEvent:[handler1, handler2],
    YourEvent2:[handler3, handler4],
);