daemon/src/core/FragmentManager.h

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/*
 * FragmentManager.h
 *
 *  Created on: 03.02.2012
 *      Author: morgenro
 */

#ifndef FRAGMENTMANAGER_H_
#define FRAGMENTMANAGER_H_

#include "Component.h"
#include "core/EventReceiver.h"
#include <ibrdtn/data/MetaBundle.h>
#include <ibrdtn/data/BundleList.h>
#include <ibrcommon/thread/Queue.h>
#include <ibrcommon/thread/Mutex.h>
#include <list>
#include <set>

namespace dtn
{
        namespace core
        {
                class FragmentManager : public dtn::daemon::IndependentComponent, public dtn::core::EventReceiver
                {
                public:
                        FragmentManager();
                        virtual ~FragmentManager();

                        void signal(const dtn::data::MetaBundle &meta);

                        void __cancellation();

                        void componentUp();
                        void componentRun();
                        void componentDown();

                        void raiseEvent(const Event *evt);

                        const std::string getName() const;

                        static void setOffset(const dtn::data::EID &peer, const dtn::data::BundleID &id, size_t abs_offset);

                        static size_t getOffset(const dtn::data::EID &peer, const dtn::data::BundleID &id);

                private:
                        class Transmission
                        {
                        public:
                                Transmission();
                                virtual ~Transmission();

                                bool operator<(const Transmission &other) const;
                                bool operator==(const Transmission &other) const;

                                dtn::data::EID peer;
                                dtn::data::BundleID id;
                                size_t offset;
                                size_t expires;
                        };

                        static void expire_offsets(size_t timestamp);
                        static size_t get_payload_offset(const dtn::data::Bundle &bundle, size_t abs_offset);

                        // search for similar bundles in the storage
                        const std::list<dtn::data::MetaBundle> search(const dtn::data::MetaBundle &meta);

                        ibrcommon::Queue<dtn::data::MetaBundle> _incoming;
                        dtn::data::BundleList _fragments;
                        bool _running;

                        static ibrcommon::Mutex _offsets_mutex;
                        static std::set<Transmission> _offsets;
                };
        } /* namespace core */
} /* namespace dtn */
#endif /* FRAGMENTMANAGER_H_ */