Glassfish example source code file (ASMainNonOSGi.java)

This example Glassfish source code file (ASMainNonOSGi.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

cannot, cannot, could, file, io, ioexception, ioexception, lastmodified, location, log, logging, malformedurlexception, net, network, objectoutputstream, properties, properties, string, string, util

The Glassfish ASMainNonOSGi.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2009-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.glassfish.bootstrap;

import static com.sun.enterprise.glassfish.bootstrap.Util.deleteRecursive;
import com.sun.enterprise.module.bootstrap.PlatformMain;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectOutputStream;
import java.net.MalformedURLException;
import java.util.Properties;
import java.util.logging.Level;

/**
 * Base class used for launchers used during non-OSGi mode
 *
 * @author Sanjeeb.Sahoo@Sun.COM
 * @author Jerome.Dochez@Sun.COM
 */
public abstract class ASMainNonOSGi extends PlatformMain
{
    protected void flushAndCreate(File cacheDir, long lastModified) throws IOException
    {
        if (cacheDir.exists() && cacheDir.isDirectory())
        {
            // remove this old cache so felix creates a new one.
            getLogger().info("Removing cache dir " + cacheDir + " left from a previous run");
            if (!deleteRecursive(cacheDir))
            {
                getLogger().warning("Not able to delete " + cacheDir);
            }
        }

        if (!createCache(cacheDir))
        {
            throw new IOException("Could not create cache");
        }

        // now record our new LastModified
        try
        {
            saveCacheInformation(cacheDir, cacheDir.toURI().toURL().toString(), lastModified);
        }
        catch (MalformedURLException e)
        {
            getLogger().log(Level.SEVERE, "Could not save cache metadata, cache will be reset at next startup", e);
        }
    }

    private Properties loadCacheInformation(File cacheDir)
    {

        long recordedLastModified = 0;
        Properties persistedInfo = new Properties();
        File lastModifiedFile = new File(cacheDir.getParentFile(), cacheDir.getName() + ".lastmodified");
        if (lastModifiedFile.exists())
        {

            InputStream is = null;
            try
            {
                is = new BufferedInputStream(new FileInputStream(lastModifiedFile));
                persistedInfo.load(is);
                try
                {
                    recordedLastModified = Long.parseLong(persistedInfo.getProperty("LastModified"));
                    // check that we have not moved our domain's directory, felix is sensitive to absolute path
                    String location = persistedInfo.getProperty("Location");
                    if (!cacheDir.toURI().toURL().toString().equals(location))
                    {
                        recordedLastModified = 0;
                    }
                }
                catch (NumberFormatException e)
                {
                    recordedLastModified = 0;
                }
            }
            catch (IOException e)
            {
                getLogger().info("Cannot read recorded lastModified, OSGi cache will be flushed");
            }
            finally
            {
                if (is != null)
                {
                    try
                    {
                        is.close();
                    }
                    catch (IOException e)
                    {
                    }
                    ;
                }
            }
        }
        return persistedInfo;
    }

    private long parse(Properties info, String name)
    {

        try
        {
            return Long.parseLong(info.getProperty(name));
        }
        catch (NumberFormatException e)
        {
            return 0;
        }
    }

    private void saveCacheInformation(File cacheDir, String location, long lastModified)
    {
        // now record our new LastModified
        ObjectOutputStream os = null;
        File lastModifiedFile = new File(cacheDir.getParentFile(), cacheDir.getName() + ".lastmodified");
        try
        {
            lastModifiedFile.delete();
            if (!lastModifiedFile.createNewFile())
            {
                getLogger().warning("Cannot create new lastModified file");
                return;
            }
            os = new ObjectOutputStream(new FileOutputStream(lastModifiedFile));
            Properties persistedInfo = new Properties();
            persistedInfo.put("LastModified", (new Long(lastModified).toString()));
            persistedInfo.put("Location", cacheDir.toURI().toURL().toString());
            persistedInfo.store(os, null);

        }
        catch (IOException e)
        {
            getLogger().info("Cannot create record of lastModified file");
        }
        finally
        {
            if (os != null)
            {
                try
                {
                    os.close();
                }
                catch (IOException e)
                {
                }
            }
        }
    }

    boolean isCacheOutdated(long lastModified, File cacheDir)
    {
        Properties persistedInfo = loadCacheInformation(cacheDir);
        long recordedLastModified = parse(persistedInfo, "LastModified");
        // check that we have not moved our domain's directory, felix is sensitive to absolute path
        String location = persistedInfo.getProperty("Location");
        try
        {
            if (!cacheDir.toURI().toURL().toString().equals(location))
            {
                recordedLastModified = 0;
            }
        }
        catch (MalformedURLException e)
        {
            getLogger().log(Level.SEVERE, "Could not load cache metadata, cache will be reset", e);
            recordedLastModified = 0;
        }

        // if the recordedLastModified is different than our most recent entry,
        // we flush the felix cache, otherwise we reuse it.
        return (recordedLastModified != lastModified);
    }

    abstract boolean createCache(File cacheDir) throws IOException;


}