StatusListener.h

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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4; -*-
// vim: set shiftwidth=4 softtabstop=4 expandtab:
/*
 ********************************************************************
 ** NIDAS: NCAR In-situ Data Acquistion Software
 **
 ** 2005, Copyright University Corporation for Atmospheric Research
 **
 ** This program is free software; you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 ** the Free Software Foundation; either version 2 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 General Public License for more details.
 **
 ** The LICENSE.txt file accompanying this software contains
 ** a copy of the GNU General Public License. If it is not found,
 ** write to the Free Software Foundation, Inc.,
 ** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **
 ********************************************************************
*/
#ifndef NIDAS_CORE_STATUSLISTENER_H
#define NIDAS_CORE_STATUSLISTENER_H

#include <xercesc/sax2/XMLReaderFactory.hpp>    // provides SAX2XMLReader
#include <xmlrpcpp/XmlRpc.h>

#include <nidas/util/Thread.h>

#include <iostream>             // cerr
#include <map>

namespace nidas { namespace core {

class StatusHandler;
class GetClocks;
class GetStatus;


class StatusListener:public nidas::util::Thread
{
    friend class StatusHandler;
    friend class GetClocks;
    friend class GetStatus;

public:
    StatusListener();
    ~StatusListener();

    int run() throw(nidas::util::Exception);

private:
    nidas::util::Mutex _clocksMutex;
    nidas::util::Mutex _statusMutex;

    std::map < std::string, std::string > _clocks;
    std::map < std::string, std::string > _oldclk;
    std::map < std::string, int >_nstale;

    std::map < std::string, std::string > _status;

    std::map < std::string, std::string > _samplePool;

    xercesc::SAX2XMLReader * _parser;

    StatusHandler *_handler;

    StatusListener(const StatusListener&);

    StatusListener& operator=(const StatusListener&);
};


class GetClocks:public XmlRpc::XmlRpcServerMethod
{
public:
    GetClocks(XmlRpc::XmlRpcServer * s, StatusListener * lstn):
        XmlRpc::XmlRpcServerMethod("GetClocks", s), _listener(lstn)
    {
    }

    void execute(XmlRpc::XmlRpcValue & params,
            XmlRpc::XmlRpcValue & result);

    std::string help()
    {
        return std::string("help GetClocks");
    }

private:
    StatusListener * _listener;

    GetClocks(const GetClocks&);

    GetClocks& operator=(const GetClocks&);
};

class GetStatus:public XmlRpc::XmlRpcServerMethod
{
public:
    GetStatus(XmlRpc::XmlRpcServer * s,
            StatusListener *
            lstn):XmlRpc::XmlRpcServerMethod("GetStatus", s),
    _listener(lstn)
    {
    }

    void execute(XmlRpc::XmlRpcValue & params,
            XmlRpc::XmlRpcValue & result);

    std::string help() {
        return std::string("help GetStatus");
    }

private:
    StatusListener * _listener;

    GetStatus(const GetStatus&);

    GetStatus& operator=(const GetStatus&);

};

}}  // namespace nidas namespace core

#endif