org.kurento.tutorial.helloworld.UserRegistry.java Source code

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Here is the source code for org.kurento.tutorial.helloworld.UserRegistry.java

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/*
 * (C) Copyright 2014-2016 Kurento (http://kurento.org/)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package org.kurento.tutorial.helloworld;

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

import org.springframework.web.socket.WebSocketSession;

/**
 * Map of users registered in the system. This class has a concurrent hash map to store users, using
 * its name as key in the map.
 * 
 * @author Boni Garcia (bgarcia@gsyc.es)
 * @author Micael Gallego (micael.gallego@gmail.com)
 * @since 5.0.0
 */
public class UserRegistry {

    private Map<String, UserSession> usersBySessionId = new ConcurrentHashMap<>();

    public void register(UserSession user) {
        usersBySessionId.put(user.getId(), user);
    }

    public UserSession getById(String id) {
        return usersBySessionId.get(id);
    }

    public UserSession getBySession(WebSocketSession session) {
        return usersBySessionId.get(session.getId());
    }

    public boolean exists(String id) {
        return usersBySessionId.keySet().contains(id);
    }

    public UserSession removeBySession(WebSocketSession session) {
        final UserSession user = getBySession(session);
        if (user != null) {
            usersBySessionId.remove(session.getId());
        }
        return user;
    }

}