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//

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU Lesser General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU Lesser General Public License for more details.

//

// You should have received a copy of the GNU Lesser General Public License

// along with this program.  If not, see http://www.gnu.org/licenses/.

//

// Author: Kewin Rausch (kewin.rausch@create-net.org)

#ifndef __RINA_PDUFTGPOLICY_H

#define __RINA_PDUFTGPOLICY_H

#include <omnetpp.h>

#include "Flow.h"

#include "RMTPort.h"

#include "PDUFTGUpdate.h"

// Forwarding declaration.

class PDUFwdTabGenerator;

// Provides a base class for every policy used in the PDUFTG module.

//

class PDUFTGPolicy :

        public cSimpleModule

{

private:

protected:

    PDUFwdTabGenerator * fwdtg;

    void handleMessage(cMessage *msg);

    void initialize();

public:

    PDUFTGPolicy();

    ~PDUFTGPolicy();

    // Computes the initial state of the forwarding table.

    //

    virtual void computeForwardingTable();

    // Evaluated in term of policy defined flow if a flow exists.

    //

    virtual PDUFTGInfo * flowExists(Address addr, unsigned short qos);

    // Insert a new flow which has been open locally to this IPC Process.

    //

    virtual void insertNewFlow(Address addr, unsigned short qos, RMTPort * port);

    // Merge an incoming information with the existing ones.

    //

    virtual void mergeForwardingInfo(PDUFTGUpdate * info);

    // Removes a local opened flow.

    //

    virtual void removeFlow(Address addr, unsigned short qos);

};

#endif // __PDUFTGPOLICY_H