xref: /external/jetty/src/java/org/eclipse/jetty/server/handler/AbstractHandler.java

//
//  ========================================================================
//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.server.handler;


import java.io.IOException;

import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.util.component.AggregateLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;


/* ------------------------------------------------------------ */
/** AbstractHandler.
 *
 *
 */
public abstract class AbstractHandler extends AggregateLifeCycle implements Handler
{
    private static final Logger LOG = Log.getLogger(AbstractHandler.class);

    private Server _server;

    /* ------------------------------------------------------------ */
    /**
     *
     */
    public AbstractHandler()
    {
    }

    /* ------------------------------------------------------------ */
    /*
     * @see org.eclipse.thread.LifeCycle#start()
     */
    @Override
    protected void doStart() throws Exception
    {
        LOG.debug("starting {}",this);
        super.doStart();
    }

    /* ------------------------------------------------------------ */
    /*
     * @see org.eclipse.thread.LifeCycle#stop()
     */
    @Override
    protected void doStop() throws Exception
    {
        LOG.debug("stopping {}",this);
        super.doStop();
    }

    /* ------------------------------------------------------------ */
    public void setServer(Server server)
    {
        Server old_server=_server;
        if (old_server!=null && old_server!=server)
            old_server.getContainer().removeBean(this);
        _server=server;
        if (_server!=null && _server!=old_server)
            _server.getContainer().addBean(this);
    }

    /* ------------------------------------------------------------ */
    public Server getServer()
    {
        return _server;
    }

    /* ------------------------------------------------------------ */
    public void destroy()
    {
        if (!isStopped())
            throw new IllegalStateException("!STOPPED");
        super.destroy();
        if (_server!=null)
            _server.getContainer().removeBean(this);
    }

    /* ------------------------------------------------------------ */
    public void dumpThis(Appendable out) throws IOException
    {
        out.append(toString()).append(" - ").append(getState()).append('\n');
    }

}