Source: ../../fea/fibconfig_entry_observer.hh

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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-

// Copyright (c) 2001-2009 XORP, Inc.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2, June
// 1991 as published by the Free Software Foundation. Redistribution
// and/or modification of this program under the terms of any other
// version of the GNU General Public License is not permitted.
// 
// 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. For more details,
// see the GNU General Public License, Version 2, a copy of which can be
// found in the XORP LICENSE.gpl file.
// 
// XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
// http://xorp.net

// $XORP: xorp/fea/fibconfig_entry_observer.hh,v 1.13 2009/01/05 18:30:49 jtc Exp $

#ifndef __FEA_FIBCONFIG_ENTRY_OBSERVER_HH__
#define __FEA_FIBCONFIG_ENTRY_OBSERVER_HH__

#include <vector>

#include "fte.hh"
#include "iftree.hh"
#include "fea_data_plane_manager.hh"

class FibConfig;


class FibConfigEntryObserver {
public:
    /**
     * Constructor.
     *
     * @param fea_data_plane_manager the corresponding data plane manager
     * (@ref FeaDataPlaneManager).
     */
    FibConfigEntryObserver(FeaDataPlaneManager& fea_data_plane_manager)
	: _is_running(false),
	  _fibconfig(fea_data_plane_manager.fibconfig()),
	  _fea_data_plane_manager(fea_data_plane_manager)
    {}

    /**
     * Virtual destructor.
     */
    virtual ~FibConfigEntryObserver() {}

    /**
     * Get the @ref FibConfig instance.
     *
     * @return the @ref FibConfig instance.
     */
    FibConfig&	fibconfig() { return _fibconfig; }

    /**
     * Get the @ref FeaDataPlaneManager instance.
     *
     * @return the @ref FeaDataPlaneManager instance.
     */
    FeaDataPlaneManager& fea_data_plane_manager() { return _fea_data_plane_manager; }

    /**
     * Test whether this instance is running.
     *
     * @return true if the instance is running, otherwise false.
     */ 
    virtual bool is_running() const { return _is_running; }

    /**
     * Start operation.
     * 
     * @param error_msg the error message (if error).
     * @return XORP_OK on success, otherwise XORP_ERROR.
     */
    virtual int start(string& error_msg) = 0;
    
    /**
     * Stop operation.
     * 
     * @param error_msg the error message (if error).
     * @return XORP_OK on success, otherwise XORP_ERROR.
     */
    virtual int stop(string& error_msg) = 0;
    
    /**
     * Receive data from the underlying system.
     * 
     * @param buffer the buffer with the received data.
     */
    virtual void receive_data(const vector<uint8_t>& buffer) = 0;
    
protected:
    // Misc other state
    bool	_is_running;

private:
    FibConfig&		_fibconfig;
    FeaDataPlaneManager& _fea_data_plane_manager;
};

#endif // __FEA_FIBCONFIG_ENTRY_OBSERVER_HH__