source: source/ariba/overlay/modules/onehop/OneHop.h@ 2440

// [Licence]
// The Ariba-Underlay Copyright
//
// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
//
// Institute of Telematics
// UniversitÀt Karlsruhe (TH)
// Zirkel 2, 76128 Karlsruhe
// Germany
//
// 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, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
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// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
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// [Licence]

#ifndef _ONE_HOP_H
#define _ONE_HOP_H

#include <map>
#include "ariba/overlay/modules/OverlayInterface.h"
#include "ariba/overlay/modules/onehop/messages/OneHopMessage.h"
#include "ariba/overlay/modules/onehop/messages/NodeListingRequest.h"
#include "ariba/overlay/modules/onehop/messages/NodeListingReply.h"
#include "ariba/utility/logging/Logging.h"

using std::map;
using ariba::overlay::OverlayInterface;
using ariba::overlay::OneHopMessage;
using ariba::overlay::NodeListingRequest;
using ariba::overlay::NodeListingReply;

namespace ariba {
namespace overlay {

class OneHop : public OverlayInterface {
        use_logging_h( OneHop );
public:
        OneHop(
                BaseOverlay& _overlay,
                const NodeID& _nodeid,
                OverlayStructureEvents* _eventsReceiver
        );

        virtual ~OneHop();

protected:

        //
        // OverlayInterface.h
        //

        virtual void createOverlay();
        virtual void deleteOverlay();

        virtual void joinOverlay(const EndpointDescriptor& bootstrapEp = EndpointDescriptor::UNSPECIFIED);
        virtual void leaveOverlay();

        virtual const EndpointDescriptor& resolveNode( const NodeID& node );
        virtual void routeMessage( const NodeID& destnode, Message* msg );

        virtual NodeList getKnownNodes() const;

        //
        // see ServiceInterface.h and OverlayInterface.h
        //

        virtual void onLinkUp( const LinkID& link, const NodeID& local, const NodeID& remote );
        virtual void onLinkDown( const LinkID& link, const NodeID& local, const NodeID& remote );
        virtual bool receiveMessage( const Message* message, const LinkID& link, const NodeID& node );

private:

        /**
         * The other nodes in the overlay
         */
        typedef map<const NodeID,const LinkID> OverlayNodeMapping;
        OverlayNodeMapping overlayNodes;

        /**
         * The current state of the overlay
         */
        typedef enum _OneHopState {
                OneHopStateInvalid                = 0,
                OneHopStateJoinInitiated          = 1,
                OneHopStateJoinListingRequested   = 2,
                OneHopStateCompleted              = 3,
        } OneHopState;

        OneHopState state;

        uint16_t pendingLinks;
        LinkID bootstrapLink;

};

}} // namespace ariba, overlay

#endif // _ONE_HOP_H