Custom AuthenticationInfoPostProcessor update the last logged in timestamp to the user profile

CustomAuthenticationInfoPostProcessor.java

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.jcr.Session;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.apache.jackrabbit.api.JackrabbitSession;
import org.apache.jackrabbit.api.security.user.Authorizable;
import org.apache.jackrabbit.api.security.user.UserManager;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.apache.sling.auth.core.spi.AuthenticationInfo;
import org.apache.sling.auth.core.spi.AuthenticationInfoPostProcessor;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Component(name = "CustomAuthenticationInfoPostProcessor", service = AuthenticationInfoPostProcessor.class, immediate = true)
public class CustomAuthenticationInfoPostProcessor implements AuthenticationInfoPostProcessor {

	@Reference
	private ResourceResolverFactory resolverFactory;

	private Session session;

	public static final Logger LOG = LoggerFactory.getLogger(CustomAuthenticationInfoPostProcessor.class);

	@Override
	public void postProcess(AuthenticationInfo info, HttpServletRequest req, HttpServletResponse res)
			throws LoginException {

		if (info == null) {
			LOG.debug("AuthenticationInfo is null. " + "Skip post processing this request.");
			return;
		}
		String userId = info.getUser();
		if (StringUtils.isNotBlank(userId)) {

			try {

				Map<String, Object> serviceParams = new HashMap<String, Object>();
				serviceParams.put(ResourceResolverFactory.SUBSERVICE, "custom-user-manager");
				ResourceResolver resolver = resolverFactory.getServiceResourceResolver(serviceParams);
				session = resolver.adaptTo(Session.class);

				UserManager userManager = ((JackrabbitSession) session).getUserManager();
				Authorizable user = userManager.getAuthorizable(userId);
				
				SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");

				user.setProperty("profile/lastloggedin", session.getValueFactory().createValue(sdf.format(new Date())));

				session.save();
				session.logout();
				
			} catch (Exception e) {
				LOG.debug("Error in CustomAuthenticationInfoPostProcessor"+e.getMessage());			
			} 

		}

	}

}