001    /**
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    
019    package org.apache.geronimo.jetty6.handler;
020    
021    import java.io.IOException;
022    import java.util.Set;
023    
024    import javax.resource.ResourceException;
025    import javax.servlet.ServletException;
026    import javax.servlet.http.HttpServletRequest;
027    import javax.servlet.http.HttpServletResponse;
028    
029    import org.apache.geronimo.connector.outbound.connectiontracking.ConnectorInstanceContext;
030    import org.apache.geronimo.connector.outbound.connectiontracking.ConnectorInstanceContextImpl;
031    import org.apache.geronimo.connector.outbound.connectiontracking.SharedConnectorInstanceContext;
032    import org.apache.geronimo.connector.outbound.connectiontracking.TrackedConnectionAssociator;
033    import org.mortbay.jetty.Handler;
034    import org.mortbay.jetty.handler.AbstractHandler;
035    
036    /**
037     * @version $Rev: 482336 $ $Date: 2006-12-04 15:12:19 -0500 (Mon, 04 Dec 2006) $
038     */
039    public class InstanceContextHandler extends AbstractImmutableHandler {
040    
041        private final Set unshareableResources;
042        private final Set applicationManagedSecurityResources;
043        private final TrackedConnectionAssociator trackedConnectionAssociator;
044    
045        public InstanceContextHandler(AbstractHandler next, Set unshareableResources, Set applicationManagedSecurityResources, TrackedConnectionAssociator trackedConnectionAssociator) {
046            super(next);
047            this.unshareableResources = unshareableResources;
048            this.applicationManagedSecurityResources = applicationManagedSecurityResources;
049            this.trackedConnectionAssociator = trackedConnectionAssociator;
050        }
051    
052        public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch) throws IOException, ServletException {
053            try {
054                if (dispatch == Handler.REQUEST) {
055                    ConnectorInstanceContext oldContext = trackedConnectionAssociator.enter(new SharedConnectorInstanceContext(unshareableResources, applicationManagedSecurityResources, false));
056    
057                    try {
058                        next.handle(target, request, response, dispatch);
059                    } finally {
060                        trackedConnectionAssociator.exit(oldContext);
061                    }
062                } else {
063                    SharedConnectorInstanceContext context = new SharedConnectorInstanceContext(unshareableResources, applicationManagedSecurityResources, true);
064                    SharedConnectorInstanceContext oldContext = (SharedConnectorInstanceContext) trackedConnectionAssociator.enter(context);
065                    context.share(oldContext);
066                    try {
067                        next.handle(target, request, response, dispatch);
068                    } finally {
069                        context.hide();
070                        trackedConnectionAssociator.exit(oldContext);
071                    }
072                }
073            } catch (ResourceException e) {
074                throw new ServletException(e);
075            }
076        }
077    
078        public void lifecycleCommand(LifecycleCommand lifecycleCommand) throws Exception {
079            ConnectorInstanceContext oldContext = trackedConnectionAssociator.enter(new ConnectorInstanceContextImpl(unshareableResources, applicationManagedSecurityResources));
080            try {
081                super.lifecycleCommand(lifecycleCommand);
082            } finally {
083                trackedConnectionAssociator.exit(oldContext);
084            }
085        }
086    }