DSMServerApp.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
 **
 ** 2009, 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_DSMSERVERAPP_H
#define NIDAS_CORE_DSMSERVERAPP_H

#include "Datasets.h"
#include "XMLException.h"
#include "NidasApp.h"
#include <nidas/util/ThreadSupport.h>
#include <nidas/util/IOException.h>
#include <nidas/util/InvalidParameterException.h>

#include <signal.h>

namespace nidas { namespace core {

class Project;
class DSMServer;
class DSMServerIntf;
class DSMServerStat;

class DSMServerApp {
public:

    DSMServerApp();

    ~DSMServerApp();

    static int main(int argc, char** argv) throw();

    static DSMServerApp* getInstance() { return _instance; }

    void initLogger();

    int initProcess();

    int run() throw();

    int parseRunstring(int argc, char** argv);

    int usage();

    void parseXMLConfigFile(const std::string& xmlFileName,Project&)
        throw(nidas::core::XMLException,
            nidas::util::InvalidParameterException,nidas::util::IOException);

    void startXmlRpcThread() throw(nidas::util::Exception);

    void killXmlRpcThread() throw();

    void startStatusThread(DSMServer* svr) throw(nidas::util::Exception);

    void killStatusThread() throw();

    const std::string& getXMLFileName() { return _xmlFileName; }

    Dataset getDataset();

private:

    void setupSignals();

    void waitForSignal(int timeoutSecs);

    static DSMServerApp* _instance;

    enum runState { RUN, QUIT, RESTART, ERROR };

    bool _debug;

    std::string _xmlFileName;

    std::string _configsXMLName;

    enum runState _runState;

    DSMServerIntf* _xmlrpcThread;

    DSMServerStat* _statusThread;

    bool _externalControl;

    bool _optionalProcessing;

    sigset_t _signalMask;

    pthread_t _myThreadId;

    std::string _datasetName;

    NidasApp _app;

    NidasAppArg ExternalControl;
    NidasAppArg OptionalProcessing;

    DSMServerApp(const DSMServerApp &);

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

}}  // namespace nidas namespace core

#endif