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Micro Distribution of the Payara Project for IBM JDK
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2013 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.
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 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
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 */


package com.sun.enterprise.glassfish.bootstrap.osgi;

import com.sun.enterprise.glassfish.bootstrap.GlassFishDecorator;
import org.glassfish.embeddable.GlassFish;
import org.glassfish.embeddable.GlassFishException;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;

import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.enterprise.glassfish.bootstrap.LogFacade;

/**
 * A specialized implementation of GlassFish which takes care of calling
 * registering & unregistering GlassFish service from service registry when GlassFish is started and stopped.
 *
 * This object is created by {@link EmbeddedOSGiGlassFishRuntime}
 *
 * @author [email protected]
 */
public class EmbeddedOSGiGlassFishImpl extends GlassFishDecorator {
    private final Logger logger = LogFacade.BOOTSTRAP_LOGGER;
    private ServiceRegistration reg;
    private final BundleContext bundleContext;

    public EmbeddedOSGiGlassFishImpl(GlassFish decoratedGf, BundleContext bundleContext) {
        super(decoratedGf);
        this.bundleContext = bundleContext;
    }

    @Override
    public void start() throws GlassFishException {
        super.start();
        registerService();
    }

    @Override
    public void stop() throws GlassFishException {
        unregisterService();
        super.stop();
    }

    private void registerService() {
        reg = getBundleContext().registerService(GlassFish.class.getName(), this, null);
        logger.log(Level.INFO, LogFacade.SERVICE_REGISTERED, new Object[]{this, reg});
    }

    private void unregisterService() {
        if (getBundleContext() != null) { // bundle is still active
            try {
                reg.unregister();
                logger.log(Level.INFO, LogFacade.SERVICE_UNREGISTERED, this);
            } catch (IllegalStateException e) {
                LogFacade.log(logger, Level.WARNING, LogFacade.SERVICE_UNREGISTRATION_EXCEPTION, e, e);
            }
        }
    }

    private BundleContext getBundleContext() {
        return bundleContext;
    }
}