/*
 * File:   MessageValidator.h
 * Author: jgaebler
 *
 * Created on May 11, 2011, 3:20 PM
 */
#pragma once

#ifndef MESSAGEVALIDATOR_H
#define	MESSAGEVALIDATOR_H

#include "Dispatcher.h"
#include "ms/MembershipService.h"

namespace ubeeme {
    namespace moversight {

        class MoversightMessage;
        class ExteriorMessage;
        class MulticastMessage;

        /**
         * @class MessageValidator
         * @author Jan Gäbler
         * @ingroup Moversight
         * @brief Defines an abstract interface to a message validator, that
         * decides whether to process a received message or to drop it.
         */
        class MessageValidator {
        public:
            /**
             * @brief Constructor
             * @param dis A reference to the dispatcher.
             */
            MessageValidator( Dispatcher& dis) : dispatcher(dis), membershipService( dis.getMembershipService()) {
            }

            /**
             * @brief Destructor
             */
            virtual ~MessageValidator(){
            }

            /**
             * @brief Checks, if the received interior message valid within the current group.
             * @param msg The message to validate.
             * @return True, if the received message checked as valid message within the current group, false otherwise.
             */
            virtual bool isValid( const MoversightMessage & msg) const = 0;

            /**
             * @brief Checks, if the received multicast message valid within the current view, or not.
             * @param msg The message to validate.
             * @return True, if the received message checked as valid message within the current view, false otherwise.
             */
            virtual bool isValid( const MulticastMessage & msg) const = 0;

            /**
             * @brief Checks, if the received exterior message valid within the current view, or not.
             * @param msg The message to validate.
             * @return True, if the received message checked as valid message within the current view, false otherwise.
             */
            virtual bool isValid( const ExteriorMessage & msg) const = 0;

        protected:
            Dispatcher & dispatcher;
            MembershipService& membershipService;
        };
    }
}

#endif	/* MESSAGEVALIDATOR_H */