com.github.mrstampy.gameboot.usersession.ActiveSessions.java Source code

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Here is the source code for com.github.mrstampy.gameboot.usersession.ActiveSessions.java

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/*
 *              ______                        ____              __ 
 *             / ____/___ _____ ___  ___     / __ )____  ____  / /_
 *            / / __/ __ `/ __ `__ \/ _ \   / __  / __ \/ __ \/ __/
 *           / /_/ / /_/ / / / / / /  __/  / /_/ / /_/ / /_/ / /_  
 *           \____/\__,_/_/ /_/ /_/\___/  /_____/\____/\____/\__/  
 *                                                 
 *                                 .-'\
 *                              .-'  `/\
 *                           .-'      `/\
 *                           \         `/\
 *                            \         `/\
 *                             \    _-   `/\       _.--.
 *                              \    _-   `/`-..--\     )
 *                               \    _-   `,','  /    ,')
 *                                `-_   -   ` -- ~   ,','
 *                                 `-              ,','
 *                                  \,--.    ____==-~
 *                                   \   \_-~\
 *                                    `_-~_.-'
 *                                     \-~
 * 
 *                       http://mrstampy.github.io/gameboot/
 *
 * Copyright (C) 2015, 2016 Burton Alexander
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * This program 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * 
 */
package com.github.mrstampy.gameboot.usersession;

import static org.apache.commons.lang3.StringUtils.isEmpty;

import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;

import com.github.mrstampy.gameboot.metrics.MetricsHelper;
import com.github.mrstampy.gameboot.usersession.data.entity.UserSession;

/**
 * Maintains a map in memory of usernames vs. active session ids for up-to-date
 * checking of active sessions. This class is managed by
 * {@link UserSessionAssist}.
 */
@Component
@Profile(UserSessionConfiguration.USER_SESSION_PROFILE)
public class ActiveSessions {

    private static final String ACTIVE_SESSIONS = "ActiveSessions";

    private Map<String, Long> sessions = new ConcurrentHashMap<>();

    @Autowired
    private MetricsHelper helper;

    /**
     * Post construct.
     *
     * @throws Exception
     *           the exception
     */
    public void postConstruct() throws Exception {
        helper.gauge(() -> sessions.size(), ACTIVE_SESSIONS, ActiveSessions.class, "active", "sessions");
    }

    /**
     * Adds the session.
     *
     * @param session
     *          the session
     */
    public void addSession(UserSession session) {
        sessions.put(session.getUser().getUserName(), session.getId());
    }

    /**
     * Checks for session.
     *
     * @param userName
     *          the user name
     * @return true, if successful
     */
    public boolean hasSession(String userName) {
        return isEmpty(userName) ? false : sessions.containsKey(userName);
    }

    /**
     * Checks for session.
     *
     * @param id
     *          the id
     * @return true, if successful
     */
    public boolean hasSession(Long id) {
        return id == null ? false : sessions.containsValue(id);
    }

    /**
     * Removes the session.
     *
     * @param session
     *          the session
     */
    public void removeSession(UserSession session) {
        sessions.remove(session.getUser().getUserName());
    }

    /**
     * Gets the session ids.
     *
     * @return the session ids
     */
    public Collection<Long> getSessionIds() {
        return Collections.unmodifiableCollection(sessions.values());
    }

    /**
     * Size.
     *
     * @return the int
     */
    public int size() {
        return sessions.size();
    }
}