001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * For further information about Alkacon Software, please see the
018 * company website: https://www.alkacon.com
019 *
020 * For further information about OpenCms, please see the
021 * project website: https://www.opencms.org
022 *
023 * You should have received a copy of the GNU Lesser General Public
024 * License along with this library; if not, write to the Free Software
025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
026 */
027
028package org.opencms.mx;
029
030import org.opencms.file.CmsObject;
031import org.opencms.main.CmsLog;
032import org.opencms.main.OpenCms;
033import org.opencms.main.OpenCmsServlet;
034import org.opencms.main.OpenCmsServlet.RequestInfo;
035
036import java.lang.management.ManagementFactory;
037import java.util.ArrayList;
038import java.util.List;
039
040import javax.management.MBeanServer;
041import javax.management.ObjectName;
042
043import org.apache.commons.logging.Log;
044
045/**
046 * Bean for special diagnostic information retrievable via JMX.
047 */
048public class CmsDiagnosticsMXBean implements I_CmsDiagnosticsMXBean {
049
050    /** The instance. */
051    public static final CmsDiagnosticsMXBean INSTANCE = new CmsDiagnosticsMXBean();
052    private static CmsObject adminCms;
053
054    private static final Log LOG = CmsLog.getLog(CmsDiagnosticsMXBean.class);
055
056    /**
057     * Registers an MBean of this class.
058     *
059     * @throws Exception if registration fails
060     */
061    public static void register(CmsObject cms) throws Exception {
062
063        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
064        adminCms = OpenCms.initCmsObject(cms);
065        ObjectName mxbeanName = new ObjectName("org.opencms.mx:type=CmsDiagnosticsMXBean");
066        mbs.registerMBean(INSTANCE, mxbeanName);
067    }
068
069    /**
070     * @see org.opencms.mx.I_CmsDiagnosticsMXBean#listActiveRequests()
071     */
072    public String listActiveRequests() {
073
074        List<RequestInfo> infos = new ArrayList<>(OpenCmsServlet.activeRequests.values());
075        long now = System.currentTimeMillis();
076        infos.sort((a, b) -> Long.compare(a.getStartTime(), b.getStartTime()));
077        StringBuilder result = new StringBuilder();
078        for (RequestInfo info : infos) {
079            String line = "(#" + info.getThreadId() + ") " + info.getUri() + " " + (now - info.getStartTime());
080            result.append(line);
081            result.append("\n");
082        }
083        return result.toString();
084    }
085
086}