org.red5.demo.auth.AggregatedUserDetailsService.java Source code

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Here is the source code for org.red5.demo.auth.AggregatedUserDetailsService.java

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/*
 * RED5 Open Source Flash Server - http://code.google.com/p/red5/
 * 
 * Copyright 2006-2012 by respective authors (see below). All rights reserved.
 * 
 * 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.red5.demo.auth;

import java.util.Map;
import java.util.Map.Entry;

import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

/**
 * Provides user details when requested by a users name. Any and all UserService implementations are queried.
 * 
 * @author Paul Gregoire (paul@infrared5.com)
 */
public class AggregatedUserDetailsService implements UserDetailsService, ApplicationContextAware {

    private static Logger log = Red5LoggerFactory.getLogger(AggregatedUserDetailsService.class, "authdemo");

    private ApplicationContext applicationContext;

    /**
     * Retrieves a user record containing the user's credentials and access. 
     */
    public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
        log.debug("loadUserByUsername: {}", userName);
        UserDetails userDetails = null;
        // get all the user details services
        Map<String, UserDetailsService> userDetailsServiceMap = applicationContext
                .getBeansOfType(UserDetailsService.class);
        log.debug("User details services: {}", userDetailsServiceMap);
        // loop through the map for any service providing a lookup, ensure that we skip 'this' class
        for (Entry<String, UserDetailsService> entry : userDetailsServiceMap.entrySet()) {
            UserDetailsService val = entry.getValue();
            if (val instanceof AggregatedUserDetailsService) {
                continue;
            }
            UserDetails tmp = val.loadUserByUsername(userName);
            if (tmp != null) {
                log.debug("User details found in {}", entry.getKey());
                userDetails = tmp;
                break;
            }
        }
        if (userDetails == null) {
            throw new UsernameNotFoundException("User " + userName + " not found");
        }
        return userDetails;
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

}