deleteserviceservlet.java

来自「opennms得相关源码 请大家看看」· Java 代码 · 共 129 行

//
//This file is part of the OpenNMS(R) Application.
//
//OpenNMS(R) is Copyright (C) 2005 The OpenNMS Group, Inc.  All rights reserved.
//OpenNMS(R) is a derivative work, containing both original code, included code and modified
//code that was published under the GNU General Public License. Copyrights for modified 
//and included code are below.
//
//OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
//Modifications:
//
//2004 Oct 4: Created File.
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2 of the License, or
//(at your option) any later version.
//
//This program is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//GNU General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//For more information contact:
//   OpenNMS Licensing       <[e-mail]>
//   http://www.opennms.org/
//   http://www.opennms.com/
//
package org.opennms.web.admin.nodeManagement;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.sql.SQLException;

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

import org.opennms.core.resource.Vault;
import org.opennms.netmgt.capsd.EventUtils;
import org.opennms.netmgt.utils.EventProxy;
import org.opennms.netmgt.utils.TcpEventProxy;
import org.opennms.netmgt.xml.event.Event;
import org.opennms.web.element.NetworkElementFactory;
import org.opennms.web.element.Service;

/**
 * @author brozow
 * 
 * TODO To change the template for this generated type comment go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
public class DeleteServiceServlet extends HttpServlet {

    /*
     * (non-Javadoc)
     * 
     * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {

            checkParameters(request);

            int nodeId = Integer.parseInt(request.getParameter("node"));
            String ipAddr = request.getParameter("intf");
            String ifIndexString = request.getParameter("ifIndex");
            int ifIndex = (ifIndexString == null || "".equals(ifIndexString)) ? -1 : Integer.parseInt(ifIndexString);
            int serviceId = Integer.parseInt(request.getParameter("service"));

            Service service_db = NetworkElementFactory.getService(nodeId, ipAddr, serviceId);

            if (service_db == null) {
                // handle this WAY better, very awful
                throw new ServletException("No such service in database");
            }

            Event e = EventUtils.createDeleteServiceEvent("OpenNMS.WebUI", nodeId, ipAddr, service_db.getServiceName(), -1L);
            sendEvent(e);

            // forward the request for proper display
            RequestDispatcher dispatcher = this.getServletContext().getRequestDispatcher("/admin/serviceDeleted.jsp");
            dispatcher.forward(request, response);
        } catch (SQLException e) {
            throw new ServletException("Error communicating with database", e);
        }

    }

    public void checkParameters(HttpServletRequest request) {
        String nodeIdString = request.getParameter("node");
        String ipAddr = request.getParameter("intf");
        String ifindexString = request.getParameter("ifindex");
        String serviceId = request.getParameter("service");

        if (nodeIdString == null) {
            throw new org.opennms.web.MissingParameterException("node", new String[] { "node", "intf", "service", "ifindex?" });
        }

        if (ipAddr == null) {
            throw new org.opennms.web.MissingParameterException("intf", new String[] { "node", "intf", "service", "ifindex?" });
        }

        if (serviceId == null) {
            throw new org.opennms.web.MissingParameterException("service", new String[] { "node", "intf", "service", "ifindex?" });
        }

    }

    private void sendEvent(Event event) throws ServletException {
        try {
            EventProxy eventProxy = Vault.createEventProxy();
            eventProxy.send(event);
        } catch (Exception e) {
            throw new ServletException("Could not send event " + event.getUei(), e);
        }
    }

}