Mercurial Hosting > luan
view src/org/eclipse/jetty/server/handler/HotSwapHandler.java @ 838:3afa8da69187
remove PatternMatcher
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 16 Sep 2016 13:24:20 -0600 |
parents | 3428c60d7cfc |
children | 22a4e93ed20e |
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// // ======================================================================== // 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 javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.eclipse.jetty.server.Handler; import org.eclipse.jetty.server.Request; import org.eclipse.jetty.server.Server; /* ------------------------------------------------------------ */ /** * A <code>HandlerContainer</code> that allows a hot swap of a wrapped handler. * */ public class HotSwapHandler extends AbstractHandlerContainer { private volatile Handler _handler; /* ------------------------------------------------------------ */ /** * */ public HotSwapHandler() { } /* ------------------------------------------------------------ */ /** * @return Returns the handlers. */ public Handler getHandler() { return _handler; } /* ------------------------------------------------------------ */ /** * @return Returns the handlers. */ public Handler[] getHandlers() { return new Handler[] { _handler }; } /* ------------------------------------------------------------ */ /** * @param handler * Set the {@link Handler} which should be wrapped. */ public void setHandler(Handler handler) { if (handler == null) throw new IllegalArgumentException("Parameter handler is null."); try { Handler old_handler = _handler; _handler = handler; Server server = getServer(); handler.setServer(server); addBean(handler); if (server != null) server.getContainer().update(this,old_handler,handler,"handler"); // if there is an old handler and it was started, stop it if (old_handler != null) { removeBean(old_handler); } } catch (Exception e) { throw new RuntimeException(e); } } /* ------------------------------------------------------------ */ /* * @see org.eclipse.thread.AbstractLifeCycle#doStart() */ @Override protected void doStart() throws Exception { super.doStart(); } /* ------------------------------------------------------------ */ /* * @see org.eclipse.thread.AbstractLifeCycle#doStop() */ @Override protected void doStop() throws Exception { super.doStop(); } /* ------------------------------------------------------------ */ /* * @see org.eclipse.jetty.server.server.EventHandler#handle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) */ public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { if (_handler != null && isStarted()) { _handler.handle(target,baseRequest,request,response); } } /* ------------------------------------------------------------ */ @Override public void setServer(Server server) { Server old_server = getServer(); if (server == old_server) return; if (isRunning()) throw new IllegalStateException(RUNNING); super.setServer(server); Handler h = getHandler(); if (h != null) h.setServer(server); if (server != null && server != old_server) server.getContainer().update(this,null,_handler,"handler"); } /* ------------------------------------------------------------ */ @SuppressWarnings( { "rawtypes", "unchecked" }) @Override protected Object expandChildren(Object list, Class byClass) { return expandHandler(_handler,list,byClass); } /* ------------------------------------------------------------ */ @Override public void destroy() { if (!isStopped()) throw new IllegalStateException("!STOPPED"); Handler child = getHandler(); if (child != null) { setHandler(null); child.destroy(); } super.destroy(); } }