Main.java

package main;

import accountServer.AccountServer;
import accountServer.AccountServerController;
import accountServer.AccountServerControllerMBean;
import accountServer.AccountServerImpl;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.Appender;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.appender.ConsoleAppender;
import org.apache.logging.log4j.core.config.AppenderRef;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.LoggerConfig;
import org.apache.logging.log4j.core.layout.PatternLayout;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.HandlerList;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import servlets.AdminPageServlet;

import javax.management.*;
import java.lang.management.ManagementFactory;
import java.nio.charset.Charset;

/**
 * @author v.chibrikov
 */
public class Main {
    private static final Logger logger = configureLog4j();

    private static Logger configureLog4j() {
        LoggerContext context = (LoggerContext) LogManager.getContext();
        Configuration config = context.getConfiguration();

        PatternLayout layout = PatternLayout.createLayout("%m%n", null, null, Charset.defaultCharset(), false, false, null, null);
        Appender appender = ConsoleAppender.createAppender(layout, null, null, "CONSOLE_APPENDER", null, null);
        appender.start();
        AppenderRef ref = AppenderRef.createAppenderRef("CONSOLE_APPENDER", null, null);
        AppenderRef[] refs = new AppenderRef[]{ref};
        LoggerConfig loggerConfig = LoggerConfig.createLogger("false", Level.INFO, "CONSOLE_LOGGER", "com", refs, null, null, null);
        loggerConfig.addAppender(appender, null, null);

        config.addAppender(appender);
        config.addLogger("Main.class", loggerConfig);
        context.updateLoggers(config);
        return LogManager.getContext().getLogger("Main.class");
    }

    public static void main(String[] args) throws Exception {
        int port = 8080;

        logger.info("Starting at http://127.0.0.1:" + port);

        AccountServer accountServer = new AccountServerImpl();

        createMBean(accountServer);

        Server server = new Server(port);
        ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
        context.addServlet(new ServletHolder(new AdminPageServlet(accountServer)), AdminPageServlet.PAGE_URL);

        ResourceHandler resource_handler = new ResourceHandler();

        HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[]{resource_handler, context});
        server.setHandler(handlers);

        server.start();
        logger.info("Server started");

        server.join();
    }

    private static void createMBean(AccountServer accountServer) throws MalformedObjectNameException, InstanceAlreadyExistsException, MBeanRegistrationException, NotCompliantMBeanException {
        AccountServerControllerMBean serverStatistics = new AccountServerController(accountServer);
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        ObjectName name = new ObjectName("Admin:type=AccountServerController");
        mbs.registerMBean(serverStatistics, name);
    }
}