org.nuclos.common.startup.Startup.java Source code

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Here is the source code for org.nuclos.common.startup.Startup.java

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//Copyright (C) 2011  Novabit Informationssysteme GmbH
//
//This file is part of Nuclos.
//
//Nuclos is free software: you can redistribute it and/or modify
//it under the terms of the GNU Affero General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//(at your option) any later version.
//
//Nuclos 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 Affero General Public License for more details.
//
//You should have received a copy of the GNU Affero General Public License
//along with Nuclos.  If not, see <http://www.gnu.org/licenses/>.
package org.nuclos.common.startup;

import java.io.IOException;
import java.io.InputStream;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.net.URL;
import java.util.Enumeration;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import org.apache.commons.io.IOUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * Log version and SVN information during startup of client and server.
 * <p>
 * This class is instantiated in the spring context of Nuclos client <em>and</em> server.
 * </p>
 * @author Thomas Pasch
 * @since Nuclos 3.2.0
 */
public class Startup implements InitializingBean {

    private static final Logger LOG = Logger.getLogger(Startup.class);

    private static final String ENCODING = "UTF-8";

    private Timer timer;

    public Startup() {
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        final TimerTask task = new TimerTask() {

            @Override
            public void run() {
                try {
                    final RuntimeMXBean RuntimemxBean = ManagementFactory.getRuntimeMXBean();
                    final List<String> arguments = RuntimemxBean.getInputArguments();
                    LOG.info("server started with " + arguments);

                    final String version = IOUtils.toString(getClasspathResource("nuclos-version.properties"),
                            ENCODING);
                    LOG.info("version info\n:" + version);
                    final String info = IOUtils.toString(getClasspathResource("info.txt"), ENCODING);
                    LOG.info("SVN info\n:" + info);
                    final String status = IOUtils.toString(getClasspathResource("status.txt"), ENCODING);
                    LOG.info("SVN status\n:" + status);
                } catch (Exception e) {
                    LOG.info("Startup timer task failed: " + e);
                }
            }
        };
        timer.schedule(task, 500);
    }

    @Autowired
    final void setTimer(Timer timer) {
        this.timer = timer;
    }

    public static InputStream getClasspathResource(String path) throws IOException {
        final ClassLoader cl = Thread.currentThread().getContextClassLoader();
        final Enumeration<URL> en = cl.getResources(path);
        if (!en.hasMoreElements()) {
            throw new IllegalArgumentException("classpath resource " + path + " not found");
        }
        final URL url = en.nextElement();
        if (en.hasMoreElements()) {
            throw new IllegalArgumentException(
                    "duplicated classpath resource " + path + " at " + url + " and " + en.nextElement());
        }
        return url.openStream();
    }

}