managestatus.java

java 写的一个新闻发布系统

package org.jahia.admin.status;

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

import org.jahia.bin.*;
import org.jahia.params.*;
import org.jahia.utils.*;
import org.jahia.data.*;
import org.jahia.services.usermanager.*;   		// Usermanager services
import org.jahia.services.sites.*;         		// Site services
import org.jahia.services.search.*;         	// Search services
import org.jahia.registries.*;             		// ServicesRegistry
import org.jahia.exceptions.*;             		// JahiaException


/**
 * <p>Title: Manage Jahia status</p>
 * <p>Description: The purpose of this class is to present an administration
 * tool for viewing and manipulating Jahia's internal status, including
 * cache(s) status, memory consumption, etc... </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: Jahia Inc.</p>
 * @author Serge Huber
 * @version 3.0
 */

public class ManageStatus {
    private static final String CLASS_NAME  =  JahiaAdministration.CLASS_NAME;
    private static final String JSP_PATH    =  JahiaAdministration.JSP_PATH;

    /**
     * Default constructor.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    public ManageStatus ( HttpServletRequest    request,
                         HttpServletResponse   response,
                         HttpSession           session )
    throws Throwable
    {
        userRequestDispatcher( request, response, session );
    } // end constructor



    /**
     * This method is used like a dispatcher for user requests.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void userRequestDispatcher( HttpServletRequest    request,
                                        HttpServletResponse   response,
                                        HttpSession           session )
    throws Throwable
    {
        String operation =  request.getParameter("sub");

        if(operation.equals("display")) {
            displaySettings( request, response, session );
        } else if(operation.equals("process")) {
            processSettings( request, response, session );
        }
    } // userRequestDispatcher



    /**
     * Display the server settings page, using doRedirect().
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void displaySettings( HttpServletRequest    request,
                                  HttpServletResponse   response,
                                  HttpSession           session )
    throws IOException, ServletException
    {
        // retrieve previous form values...
        Long freeMemoryInBytes       =  (Long) session.getAttribute(CLASS_NAME + "freeMemoryInBytes");
        Long totalMemoryInBytes      =  (Long) session.getAttribute(CLASS_NAME + "totalMemoryInBytes");
        Integer outputCacheSize      =  (Integer) session.getAttribute(CLASS_NAME + "outputCacheSize");
        Integer outputCacheMaxSize   =  (Integer) session.getAttribute(CLASS_NAME + "outputCacheMaxSize");
        Integer dbPoolTotalConnections;
        Integer dbPoolNbFreeConnections;
        Integer dbPoolBusyConnections;
        Integer dbPoolMinConnections;
        Integer dbPoolMaxConnections;

        // set default values (if necessary)...
        if (freeMemoryInBytes == null) {      freeMemoryInBytes = new Long(Runtime.getRuntime().freeMemory());  }
        if (totalMemoryInBytes == null) {     totalMemoryInBytes = new Long(Runtime.getRuntime().totalMemory()); }
        if (outputCacheSize == null) {        outputCacheSize = new Integer(ServicesRegistry.getInstance().getCacheServerService().size()); }
        if (outputCacheMaxSize == null) {        outputCacheMaxSize = new Integer(ServicesRegistry.getInstance().getCacheServerService().getMaxSize()); }

        // set request attributes...
        request.setAttribute("freeMemoryInBytes",       freeMemoryInBytes);
        request.setAttribute("totalMemoryInBytes",      totalMemoryInBytes);
        request.setAttribute("outputCacheSize",         outputCacheSize);
        request.setAttribute("outputCacheMaxSize",         outputCacheMaxSize);

        JahiaAdministration.doRedirect( request, response, session, JSP_PATH + "status.jsp" );
    } // end displaySettings



    /**
     * Process and check the validity of the server settings page. If they are
     * not valid, display the server settings page to the user.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void processSettings( HttpServletRequest   request,
                                  HttpServletResponse  response,
                                  HttpSession          session )
    throws IOException, ServletException
    {
        boolean processError =  true;

        /*
        // get form values...
        Long freeMemoryInBytes    =  (Long) request.getParameter("freeMemoryInBytes").trim();

        // check form validity...
        if(jahiaServerHomeDiskPath.length() == 0) {
            session.setAttribute(CLASS_NAME + "jahiaDisplayMessage",  "Server Home must be set.");
        } else {
            processError = false;
        }

        // set session with new attributes...
        session.setAttribute(CLASS_NAME + "jahiaServerHomeDiskPath",       jahiaServerHomeDiskPath);
        */
        if(processError) {
            displaySettings( request, response, session );
        } else {
            // storeSettings( request, response, session );
        }
        JahiaAdministration.doRedirect( request, response, session, JSP_PATH + "status.jsp" );
    } // end processSettings



}