NotificationService.java

/*
 * Copyright (c) 2002-2015, Mairie de Paris
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice
 *     and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice
 *     and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *
 *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
 *     contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * License 1.0
 */
package fr.paris.lutece.plugins.grusupply.service;

import fr.paris.lutece.plugins.crmclient.util.CRMException;
import fr.paris.lutece.plugins.grubusiness.business.notification.Notification;
import fr.paris.lutece.plugins.grubusiness.service.notification.INotificationServiceProvider;
import fr.paris.lutece.plugins.grubusiness.service.notification.NotificationException;
import fr.paris.lutece.portal.service.spring.SpringContextService;
import fr.paris.lutece.portal.service.util.AppLogService;

import org.springframework.beans.factory.NoSuchBeanDefinitionException;

import java.util.List;

public class NotificationService
{
    private static final String BEAN_NOTIFICATION_SERVICE = "grusupply.notificationService";
    private static NotificationService _singleton;
    private static boolean bIsInitialized = false;
    private static List<INotificationServiceProvider> _notifyers ;

    /**
     * Returns the unique instance
     * 
     * @return The unique instance
     */
    public static NotificationService instance( )
    {
        if ( !bIsInitialized )
        {
            try
            {
                _singleton = SpringContextService.getBean( BEAN_NOTIFICATION_SERVICE );
                
                _notifyers = SpringContextService.getBeansOfType( INotificationServiceProvider.class ) ;
                
            }
            catch( NoSuchBeanDefinitionException e )
            {
                // The notification bean has not been found, the application must use the ESB
                AppLogService.info( "No notification bean found, the application must use the ESB" );
            }
            finally
            {
                bIsInitialized = true;
            }
        }

        return _singleton;
    }

    /**
     * process notification by the registred notifyers
     * 
     * @param notification
     * @throws NotificationException 
     */
    public static void process ( Notification notification ) throws NotificationException
    {
        
        for ( INotificationServiceProvider notifyer : _notifyers )
        {
            notifyer.process( notification );
        }
        
    }   
}