RoutingExtension.h

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/*
 * RoutingExtension.h
 *
 * Copyright (C) 2013 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * 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.
 *
 */

#ifndef ROUTINGEXTENSION_H_
#define ROUTINGEXTENSION_H_

#include "routing/NeighborDatabase.h"
#include "routing/NodeHandshake.h"
#include "core/Event.h"
#include <ibrdtn/data/BundleID.h>
#include <ibrdtn/data/EID.h>

namespace dtn
{
        namespace routing
        {
                class BaseRouter;

                class RoutingExtension
                {
                        static const std::string TAG;

                public:
                        RoutingExtension();
                        virtual ~RoutingExtension() = 0;

                        virtual void notify(const dtn::core::Event *evt) throw () = 0;
                        virtual void componentUp() throw () = 0;
                        virtual void componentDown() throw () = 0;

                        enum CALLBACK_ACTION
                        {
                                ROUTE_CALLBACK_FORWARDED = 0,
                                ROUTE_CALLBACK_ABORTED = 1,
                                ROUTE_CALLBACK_REJECTED = 2,
                                ROUTE_CALLBACK_DELETED = 3
                        };

                        virtual void requestHandshake(const dtn::data::EID&, NodeHandshake&) const { };

                        virtual void responseHandshake(const dtn::data::EID&, const NodeHandshake&, NodeHandshake&) { };

                        virtual void processHandshake(const dtn::data::EID&, NodeHandshake&) { };

                        void transferTo(const dtn::data::EID &destination, const dtn::data::MetaBundle &meta);

                        static bool isRouting(const dtn::data::EID &eid);

                protected:
                        BaseRouter& operator*();

                private:
                        friend class BaseRouter;
                        static BaseRouter *_router;
                };
        } /* namespace routing */
} /* namespace dtn */
#endif /* ROUTINGEXTENSION_H_ */