How to hook Post Login and Pre Login actions or events in Liferay 7

How to Hook Login Events in Liferay 7 ?

In this tutorial we are going to learn how we can hook the Login POST and PRE actions in liferay 7. To hook the post login or pre login event we need to use the liferay's com.liferay.portal.kernel.events.LifecycleAction  class to process the events.

As we know that everything in liferay 7 is a component and we need to define this too as a component using the @Component annotation. In the component we  need to define the LifecycleAction.class as a service.  So the final @Component setup will look like this.

For Post Login Event we need to setup the @Component like this -:

@Component(
immediate = true, property = {"key=login.events.post"},
service = LifecycleAction.class
)

For Pre Login Event we need to setup the @Component like this -:

@Component(
immediate = true, property = {"key=login.events.pre"},
service = LifecycleAction.class

)

In both of the cases we need to implement the method processLifecycleEvent(LifecycleEvent lifecycleEvent) .

So below is the code snippet for both of the events.

Code for LoginPostAction

	package com.liferayrevisited.events;
	import org.osgi.service.component.annotations.Component;
	import com.liferay.portal.kernel.events.ActionException;
	import com.liferay.portal.kernel.events.LifecycleAction;
	import com.liferay.portal.kernel.events.LifecycleEvent;
	/**
	* @author LiferayRevisited
	*/
	@Component(
	immediate = true, property = {"key=login.events.post"},
	service = LifecycleAction.class
	)
	public class LoginPostAction implements LifecycleAction {
	@Override
	public void processLifecycleEvent(LifecycleEvent lifecycleEvent) throws ActionException {
	System.out.println(" ==== >> >> CALLING THE LOGIN POST ACTION ==== >>> >>>" );
	}
	}

view raw LoginPostAction hosted with ❤ by GitHub

Code for LoginPreAction

	package com.liferayrevisited.events;
	import org.osgi.service.component.annotations.Component;
	import com.liferay.portal.kernel.events.ActionException;
	import com.liferay.portal.kernel.events.LifecycleAction;
	import com.liferay.portal.kernel.events.LifecycleEvent;
	/**
	* @author LiferayRevisited
	*/
	@Component(
	immediate = true, property = {"key=login.events.pre"},
	service = LifecycleAction.class
	)
	public class LoginPreAction implements LifecycleAction {
	@Override
	public void processLifecycleEvent(LifecycleEvent lifecycleEvent) throws ActionException {
	System.out.println("LoginPreAction.processLifecycleEvent() ==== >> >> CALLING THE LOGIN PRE ACTION ==== >>> >>>" );
	}
	}

view raw LoginPreAction hosted with ❤ by GitHub