001/**
002 * Copyright 2014 DuraSpace, Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.fcrepo.http.commons.session;
017
018import static org.fcrepo.kernel.impl.services.TransactionServiceImpl.isInTransaction;
019import static org.modeshape.jcr.SessionUtils.unregisterObservationManager;
020import static org.slf4j.LoggerFactory.getLogger;
021
022import javax.inject.Inject;
023import javax.jcr.Session;
024import javax.servlet.http.HttpServletRequest;
025import javax.ws.rs.ext.Provider;
026
027import org.glassfish.hk2.api.Factory;
028import org.glassfish.jersey.process.internal.RequestScoped;
029import org.slf4j.Logger;
030
031/**
032 * Provide a JCR session within the current request context
033 *
034 * @author awoods
035 */
036@Provider
037@RequestScoped
038public class SessionProvider implements Factory<Session> {
039
040    @Inject
041    SessionFactory sessionFactory;
042
043    private HttpServletRequest request;
044
045    /**
046     * Create a new session provider for a request
047     * @param request
048     */
049    @Inject
050    public SessionProvider(final HttpServletRequest request) {
051        this.request = request;
052    }
053
054    private static final Logger LOGGER = getLogger(SessionProvider.class);
055
056    @Override
057    public Session provide() {
058        final Session session = sessionFactory.getSession(request);
059        LOGGER.trace("Providing new session {}", session);
060        return session;
061    }
062
063    @Override
064    public void dispose(final Session session) {
065        LOGGER.trace("Disposing session {}", session);
066
067        if (session.isLive() && !isInTransaction(session)) {
068            unregisterObservationManager(session);
069            session.logout();
070        }
071    }
072}