com.liferay.document.library.repository.cmis.internal.CMISSessionCache.java Source code

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Here is the source code for com.liferay.document.library.repository.cmis.internal.CMISSessionCache.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.document.library.repository.cmis.internal;

import com.liferay.portal.kernel.concurrent.ConcurrentReferenceValueHashMap;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.memory.FinalizeManager;
import com.liferay.portal.kernel.servlet.PortalSessionThreadLocal;
import com.liferay.portal.kernel.util.TransientValue;

import java.lang.ref.Reference;

import java.util.Enumeration;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import javax.servlet.http.HttpSession;

import org.apache.chemistry.opencmis.client.api.Session;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;

/**
 * @author Adolfo Prez
 */
@Component(immediate = true, service = CMISSessionCache.class)
public class CMISSessionCache {

    public Session get(String key) {
        HttpSession httpSession = PortalSessionThreadLocal.getHttpSession();

        if (httpSession == null) {
            return null;
        }

        TransientValue<Session> transientValue = (TransientValue<Session>) httpSession.getAttribute(key);

        if (transientValue == null) {
            return null;
        }

        Object value = transientValue.getValue();

        if (value instanceof Session) {
            return (Session) value;
        }

        httpSession.removeAttribute(key);

        return null;
    }

    public void put(String key, Session session) {
        HttpSession httpSession = PortalSessionThreadLocal.getHttpSession();

        if (httpSession == null) {
            if (_log.isWarnEnabled()) {
                _log.warn("Unable to get HTTP session");
            }

            return;
        }

        httpSession.setAttribute(key, new TransientValue<>(session));

        _sessions.putIfAbsent(httpSession.getId(), httpSession);
    }

    @Deactivate
    protected void deactivate() {
        for (Map.Entry<String, HttpSession> entry : _sessions.entrySet()) {
            _clearSession(entry.getValue());
        }

        _sessions.clear();
    }

    private void _clearSession(HttpSession httpSession) {
        Enumeration<String> attributeNames = httpSession.getAttributeNames();

        while (attributeNames.hasMoreElements()) {
            String attributeName = attributeNames.nextElement();

            if (attributeName.startsWith(Session.class.getName())) {
                httpSession.removeAttribute(attributeName);

                break;
            }
        }
    }

    private static final Log _log = LogFactoryUtil.getLog(CMISSessionCache.class);

    private final ConcurrentMap<String, HttpSession> _sessions = new ConcurrentReferenceValueHashMap<>(
            new ConcurrentHashMap<String, Reference<HttpSession>>(), FinalizeManager.WEAK_REFERENCE_FACTORY);

}