com.maydesk.base.util.AspectExceptionHandler.java Source code

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Here is the source code for com.maydesk.base.util.AspectExceptionHandler.java

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/* This file is part of the MayDesk project.
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.*/

package com.maydesk.base.util;

import nextapp.echo.app.ApplicationInstance;
import nextapp.echo.webcontainer.ContainerContext;

import org.apache.commons.lang.exception.ExceptionUtils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.hibernate.Session;

import com.maydesk.base.MDServlet;
import com.maydesk.base.PDApplicationInstance;
import com.maydesk.base.PDDesktop;
import com.maydesk.base.PDHibernateFactory;
import com.maydesk.base.PDHibernateMasterFactory;
import com.maydesk.base.PDUserSession;
import com.maydesk.base.gui.PDMessageBox;

/*
 * Eclipse:
 * -Daj.weaving.verbose=false 
 * -Dorg.aspectj.weaver.showWeaveInfo=false
 * -javaagent:C:\\libs\\aspectjweaver.jar
 */

/**
 * @author chrismay
 */
@Aspect
public class AspectExceptionHandler {

    @Around(value = "execution(* actionPerformed(..))")
    public void handleUnexpectedExceptionInActionListeners(ProceedingJoinPoint point) throws Throwable {
        try {
            long time = System.currentTimeMillis();
            point.proceed();
            time = System.currentTimeMillis() - time;
            if (time > 3000) {
                String msg = "Long operation " + time + ": " + PDUserSession.getInstance().getUser() + " at "
                        + point;
                System.out.println(msg);
            }
        } catch (Exception e) {
            try {
                e.printStackTrace();

                // construct the message text
                String stage = "";
                if (PDDesktop.getInstance() != null) {
                    stage = "Stage1"; //PDApplicationInstance.getActivePD().getEnvironment();
                }

                String msg = "An error has occurred: \n\n";
                msg += "User: " + PDUserSession.getInstance().getUser() + "\n";
                msg += "Stage: " + stage + "\n\n";
                msg += "Error: " + ExceptionUtils.getStackTrace(e);

                // send an email
                try {
                    MDMailUtil.sendMail("mail@chrismay.de", "Error in MayDesk " + stage, msg, null);
                } catch (Exception ex) {
                    System.out.println("Mail not configured!");
                    ex.printStackTrace();
                }

                // show error dialog
                if (PDDesktop.getInstance() != null) {
                    String msg2 = "An unexpected programm error occurred!\n\n";
                    msg2 += "Error type: " + e.getMessage() + "\n\n";
                    msg2 += "An email has been sent automatically to the admin; we will fix the error as soon as possible - sorry for the inconvenience";
                    PDMessageBox.msgBox("Unexpected Error", msg2, 360, 240);
                }

                // rollback hibernate transaction
                ContainerContext context = (ContainerContext) ApplicationInstance.getActive()
                        .getContextProperty(ContainerContext.CONTEXT_PROPERTY_NAME);
                PDHibernateMasterFactory factory = (PDHibernateMasterFactory) context.getSession()
                        .getAttribute(MDServlet.HIBERNATE_FACTORY);
                if (factory.hasOpenSession()) {
                    Session session = PDHibernateFactory.getSession();
                    session.getTransaction().rollback();
                    session.close();
                }
            } catch (Exception ex2) {
                ex2.printStackTrace();
            }
        }
    }
}