PingServlet.java

//
//  ========================================================================
//  Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.test.jmx;

import java.io.IOException;
import java.util.Date;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.jetty.util.annotation.ManagedObject;
import org.eclipse.jetty.util.annotation.ManagedOperation;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;

/**
 * Simple ping into this webapp to see if it is here.
 */
@SuppressWarnings("serial")
@ManagedObject("Ping Servlet")
public class PingServlet extends HttpServlet
{
    private static final Logger LOG = Log.getLogger(PingServlet.class);
    
    @Override
    public void init(ServletConfig config) throws ServletException
    {
        LOG.info("Adding {} to attribute {}", this, config.getServletName());
        config.getServletContext().setAttribute(config.getServletName(),this);
        super.init(config);
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    {
        resp.setContentType("text/plain");
        resp.getWriter().println(ping());
    }

    @ManagedOperation
    public String ping()
    {
        return "Servlet Pong at " + new Date().toString();
    }
}