onlinefrontlines.admin.web.ServerInfoAction.java Source code

Introduction

Here is the source code for onlinefrontlines.admin.web.ServerInfoAction.java

Source

package onlinefrontlines.admin.web;

import onlinefrontlines.web.*;
import java.util.Date;
import java.util.TreeMap;
import javax.sql.DataSource;
import onlinefrontlines.utils.DbConnectionPool;

/**
 * This action views general server info
 * 
 * @author jorrit
 * 
 * Copyright (C) 2009-2013 Jorrit Rouwe
 * 
 * This file is part of Online Frontlines.
 *
 * Online Frontlines 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 3 of the License, or
 * (at your option) any later version.
 * 
 * Online Frontlines 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 Online Frontlines.  If not, see <http://www.gnu.org/licenses/>.
 */
public class ServerInfoAction extends WebAction {
    /**
     * Output stats
     */
    public String date;
    public long usedMemory;
    public long committedMemory;
    public long maxMemory;
    public int cpuCount;
    public String os;
    public String jvm;
    public TreeMap<String, String> dataSourceStatus = new TreeMap<String, String>();
    public String servletContainer;

    /**
     * Query data source status
     * 
     * @param dataSourceName Name of the data source
     */
    private String getDataSourceStatus(String dataSourceName) {
        DataSource dataSource = (DataSource) DbConnectionPool.getInstance().getDataSources().get(dataSourceName);
        if (dataSource.getClass().getName().equals("org.apache.commons.dbcp.BasicDataSource")
                && dataSource instanceof org.apache.commons.dbcp.BasicDataSource) {
            org.apache.commons.dbcp.BasicDataSource s = (org.apache.commons.dbcp.BasicDataSource) dataSource;
            return "Busy: " + s.getNumActive() + " (" + (int) (s.getNumActive() * 100 / s.getMaxActive())
                    + "%), Connections: " + (s.getNumIdle() + s.getNumActive()) + ", Max: " + s.getMaxActive();
        } else if (dataSource.getClass().getName().equals("org.apache.tomcat.dbcp.dbcp.BasicDataSource")
                && dataSource instanceof org.apache.tomcat.dbcp.dbcp.BasicDataSource) {
            org.apache.tomcat.dbcp.dbcp.BasicDataSource s = (org.apache.tomcat.dbcp.dbcp.BasicDataSource) dataSource;
            return "Busy: " + s.getNumActive() + " (" + (int) (s.getNumActive() * 100 / s.getMaxActive())
                    + "%), Connections: " + (s.getNumIdle() + s.getNumActive()) + ", Max: " + s.getMaxActive();
        } else {
            return "Unknown datasource: " + dataSource.getClass().getName();
        }
    }

    /**
      * Execute the action
      */
    protected WebView execute() throws Exception {
        Runtime r = Runtime.getRuntime();

        // Get stats
        date = new Date().toString();
        committedMemory = r.totalMemory();
        maxMemory = r.maxMemory();
        usedMemory = committedMemory - r.freeMemory();
        cpuCount = Runtime.getRuntime().availableProcessors();
        os = System.getProperty("os.name") + " (" + System.getProperty("sun.os.patch.level") + ") "
                + System.getProperty("os.arch") + " " + System.getProperty("os.version");
        jvm = System.getProperty("java.runtime.name") + " " + System.getProperty("java.runtime.version") + " "
                + System.getProperty("java.vm.name");
        for (String s : DbConnectionPool.getInstance().getDataSources().keySet())
            dataSourceStatus.put(s, getDataSourceStatus(s));
        servletContainer = servletContext.getServerInfo();

        return getSuccessView();
    }
}