org.dhara.CustomUserService.java Source code

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/***********************************************************************************************************************
 *
 * Dhara- A Geoscience Gateway
 * ==========================================
 *
 * Copyright (C) 2013 by Dhara
 *
 ***********************************************************************************************************************
 *
 * 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.dhara;

import org.apache.rave.model.User;
import org.apache.rave.portal.repository.CategoryRepository;
import org.apache.rave.portal.repository.PageRepository;
import org.apache.rave.portal.repository.PageTemplateRepository;
import org.apache.rave.portal.repository.PersonRepository;
import org.apache.rave.portal.repository.UserRepository;
import org.apache.rave.portal.repository.WidgetRepository;
import org.apache.rave.portal.service.impl.DefaultUserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

/**
 * Custom User service is to demonstrate how you can implement a custom
 * {@link org.dhara.portal.service.UserService} in Apache Rave and add additional information
 */

@Service(value = "customUserService")
public class CustomUserService extends DefaultUserService {
    private static final Logger logger = LoggerFactory.getLogger(CustomUserService.class);
    private final UserRepository userRepository;

    @Autowired
    public CustomUserService(UserRepository userRepository, PageRepository pageRepository,
            WidgetRepository widgetRepository, PageTemplateRepository pageTemplateRepository,
            CategoryRepository categoryRepository, PersonRepository personRepository) {
        super(pageRepository, userRepository, widgetRepository, pageTemplateRepository, categoryRepository,
                personRepository);
        this.userRepository = userRepository;
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
        logger.info("Custom User Service called to get user information");
        final User user = userRepository.getByUsername(username);
        if (user == null) {
            throw new UsernameNotFoundException("User with username '" + username + "' was not found!");
        }
        fetchCustomCredential(user);
        return user;
    }

    /**
     * This method attempts to load the custom credential and decorates it with
     * additional attributes.
     *
     * @param user for whom the custom credentials are fetched
     */
    private void fetchCustomCredential(User user) {
        try {
            logger.info("Decorating the credential for user {}", user.getUsername());
        } catch (Exception e) {
            logger.warn("Unexpected error while fetching custom credentials", e);
        }
    }

    @Override
    public User getAuthenticatedUser() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();

        if (authentication != null && authentication.getPrincipal() instanceof User) {
            return (User) authentication.getPrincipal();
        } else {
            throw new SecurityException("Could not get the authenticated user!");
        }
    }

}