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IGRP Framework is a powerful and highly customizable platform developed by the Operational Nucleus for the Information Society (NOSi) to create web applications, it provides out of box, several modules to make easy to create stand-alone, production-grade web applications: authentication and access-control, business processes automation, reporting, page builder with automatic code generation and incorporation of the Once-Only-Principle, written in Java. IGRP Framework WAR - Contains some keys resources that give UI to IGRP Framework and others supports files.

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package nosi.core.webapp;
/**
 * @author Marcel Iekiny
 * Apr 14, 2017
 */
import java.io.IOException;

import org.apache.logging.log4j.ThreadContext;

import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.xml.bind.DatatypeConverter;

import nosi.core.i18n.I18nManager;
import nosi.core.servlet.IgrpServlet;
import nosi.core.webapp.security.EncrypDecrypt;


public final class Igrp{
	
	private static final IgrpThreadLocal appInstance = new IgrpThreadLocal();

	private HttpServlet servlet;
	private HttpServletRequest request;
	private HttpServletResponse response;
	
	private Controller controller;
	private String currentAppName;
	private String currentPageName;
	private String currentActionName;
	
	private String homeUrl;
	private String basePath;
	private String baseRoute;
	
	private boolean die;
	
	//Flash Message
	private FlashMessage flashMessage;
	
	// User component (Identity)
	private User user;
	
	// For i18n
	private I18nManager i18nManager;
	
	// For Igrp log toolbar 
	private IgrpLog log; 
	
	public static final String HOME_ROUTE = "igrp/home/index"; 
	
	private Igrp(){} // Private and empty default constructor ... allow Singleton class 
	
	public static Igrp getInstance() {
	    return appInstance.getCurrentInstance();
	 }
	
	 public static void set() {
		 appInstance.set(new Igrp());
	 }
	 
    public static void remove() {
    	appInstance.cleanUp();
    	ThreadContext.clearAll(); // Log4j MDC clear all context resources
    }
	 
	// Inicialize the web app components
	public Igrp init(HttpServlet servlet, HttpServletRequest request, HttpServletResponse response){
		this.servlet = servlet;
		this.request = request;
		this.response = response;
		this.basePath = this.request.getContextPath();
		this.baseRoute = this.request.getServletPath();
		this.homeUrl = EncrypDecrypt.encrypt(HOME_ROUTE);
		// init. of others configuration 
		this.flashMessage = new FlashMessage(); // Flash Message instance 
		// For internacionalization purpose 
		this.i18nManager = new I18nManager();
		this.i18nManager.init(request);
		// For Igrp log toolbar 
		this.log = new IgrpLog();
		this.log.init(request);
		// User component (Identity)
		this.user = new User();
		this.user.init(request);
		
		return this;
	}
	
	public void run() throws IOException{ // run the web app 
		this.log.run();
		if(!this.die)
			this.runController();
		this.exit();
	}
	
	// Exit and Send the response. 
	private void exit(){
		new Controller().sendResponse();
		this.die = false;
	}
	
	public IgrpThreadLocal currentThreadLocal() {
		return appInstance;
	}
	
	private void runController() throws IOException{
		new Controller().initControllerNRunAction();
	}
	
	public HttpServlet getServlet() {
		return servlet;
	}

	public void setServlet(IgrpServlet servlet) {
		this.servlet = servlet;
	}
	
	public void setServlet(HttpServlet servlet) {
		this.servlet = servlet;
	}
	public void setRequest(HttpServletRequest request) {
		this.request = request;
	}
	public Controller getCurrentController(){
		return this.controller;
	}
	
	public void setCurrentController(Controller controller){
		this.controller = controller;
	}
	
	public HttpServletResponse getResponse(){
		return this.response;
	}
	
	public void setResponse(HttpServletResponse response){
		this.response = response;
	}
	
	public HttpServletRequest getRequest(){
		return this.request;
	}
	
	public String getBaseRoute(){
		return this.baseRoute;
	}
	
	public String getBasePath(){
		return this.basePath;
	}
	
	public String getHomeUrl(){
		return this.homeUrl;
	}
	
	public FlashMessage getFlashMessage(){
		return this.flashMessage;
	}

	
	public String getCurrentAppName() {
		return Core.isNotNull(currentAppName)?currentAppName:"igrp";
	}

	public void setCurrentAppName(String currentAppName) {
		this.currentAppName = currentAppName;
	}

	public String getCurrentPageName() {
		return Core.isNotNull(currentPageName)?currentPageName:"home";
	}

	public void setCurrentPageName(String currentPageName) {
		this.currentPageName = currentPageName;
	}

	public String getCurrentActionName() {
		return Core.isNotNull(currentActionName)?currentActionName:"index";
	}

	public void setCurrentActionName(String currentActionName) {
		this.currentActionName = currentActionName;
	}
	
	public User getUser(){
		return this.user;
	}

	public void die(){
		this.die = true;
	}
	
	public I18nManager getI18nManager() {	
		return i18nManager;
	}
	
	public IgrpLog getLog() {
		return log;
	}
	
	public String generateCsrfToken() {
		byte[] buffer = new byte[50];
		new java.security.SecureRandom().nextBytes(buffer);
	    String result = DatatypeConverter.printHexBinary(buffer);
	    String cookieName = this.request.getParameter("r").replace("/", "-");
	    Cookie cookie = new Cookie(cookieName, result);
	    this.response.addCookie(cookie);
		return result;
	}
	
}