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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
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package org.glassfish.grizzly.servlet;

import org.glassfish.grizzly.http.Cookie;
import org.glassfish.grizzly.http.server.DefaultSessionManager;
import org.glassfish.grizzly.http.server.Request;
import org.glassfish.grizzly.http.server.Session;
import org.glassfish.grizzly.http.server.SessionManager;

/**
 * The Servlet-aware {@link SessionManager} implementation.
 */
public class ServletSessionManager implements SessionManager {
    /**
     * @return DefaultSessionManager singleton
     */
    public static SessionManager instance() {
        return LazyHolder.INSTANCE;
    }

    // Lazy initialization of ServletSessionManager
    private static class LazyHolder {
        private static final ServletSessionManager INSTANCE = new ServletSessionManager();
    }

    private final SessionManager defaultManager = DefaultSessionManager.instance();
    
    private ServletSessionManager() {
    }
    
    @Override
    public Session getSession(final Request request,
            final String requestedSessionId) {
        return defaultManager.getSession(request, requestedSessionId);
    }

    @Override
    public Session createSession(final Request request) {
        return defaultManager.createSession(request);
    }
    
    @Override
    public String changeSessionId(final Request request, final Session session) {
        return defaultManager.changeSessionId(request, session);
    }

    @Override
    public void configureSessionCookie(final Request request, final Cookie cookie) {
        defaultManager.configureSessionCookie(request, cookie);
        
        final HttpServletRequestImpl servletRequest =
                ServletHandler.getServletRequest(request);
        
        assert servletRequest != null;
        
        final javax.servlet.SessionCookieConfig cookieConfig =
                servletRequest.getContextImpl().getSessionCookieConfig();
        
        if (cookieConfig.getDomain() != null) {
            cookie.setDomain(cookieConfig.getDomain());
        }
        if (cookieConfig.getPath() != null) {
            cookie.setPath(cookieConfig.getPath());
        }
        if (cookieConfig.getComment() != null) {
            cookie.setVersion(1);
            cookie.setComment(cookieConfig.getComment());
        }
        
        cookie.setSecure(cookieConfig.isSecure());
        cookie.setHttpOnly(cookieConfig.isHttpOnly());
        cookie.setMaxAge(cookieConfig.getMaxAge());
    }
}