MBTCPMultiMaster.h

/*
 * Copyright (c) 2015 Pavel Vainerman.
 *
 * 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, version 2.1.
 *
 * 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 Lesser 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/>.
 */
// -----------------------------------------------------------------------------
#ifndef _MBTCPMultiMaster_H_
#define _MBTCPMultiMaster_H_
// -----------------------------------------------------------------------------
#include <ostream>
#include <string>
#include <map>
#include <vector>
#include "MBExchange.h"
#include "modbus/ModbusTCPMaster.h"
// -------------------------------------------------------------------------
namespace uniset
{
    // -----------------------------------------------------------------------------
    // -----------------------------------------------------------------------------
    class MBTCPMultiMaster:
        public MBExchange
    {
        public:
            MBTCPMultiMaster( uniset::ObjectId objId, uniset::ObjectId shmID, const std::shared_ptr<SharedMemory>& ic = nullptr,
                              const std::string& prefix = "mbtcp" );
            virtual ~MBTCPMultiMaster();
 
            static std::shared_ptr<MBTCPMultiMaster> init_mbmaster(int argc, const char* const* argv,
                    uniset::ObjectId shmID, const std::shared_ptr<SharedMemory>& ic = nullptr,
                    const std::string& prefix = "mbtcp" );
 
            static void help_print( int argc, const char* const* argv );
 
            virtual uniset::SimpleInfo* getInfo( const char* userparam = 0 ) override;
 
        protected:
            virtual void sysCommand( const uniset::SystemMessage* sm ) override;
            virtual void initIterators() override;
            virtual std::shared_ptr<ModbusClient> initMB( bool reopen = false ) override;
            virtual bool deactivateObject() override;
            void initCheckConnectionParameters();
 
            void poll_thread();
            void check_thread();
            void final_thread();
 
            uniset::uniset_rwmutex mbMutex;
            bool force_disconnect;
            timeout_t checktime;
 
        private:
            MBTCPMultiMaster();
 
            struct MBSlaveInfo
            {
                MBSlaveInfo(): ip(""), port(0), mbtcp(0), priority(0),
                    respond(false), respond_id(uniset::DefaultObjectId), respond_invert(false),
                    recv_timeout(200), aftersend_pause(0), sleepPause_usec(100),
                    force_disconnect(true),
                    myname(""), use(false), initOK(false), ignore(false) {}
 
                std::string ip;
                int port;
                std::shared_ptr<ModbusTCPMaster> mbtcp;
                int priority;
 
                // параметры для проверки соединения..
                ModbusRTU::SlaveFunctionCode checkFunc = { ModbusRTU::fnUnknown };
                ModbusRTU::ModbusAddr checkAddr = { 0x00 };
                ModbusRTU::ModbusData checkReg = { 0 };
 
                bool respond;
                uniset::ObjectId respond_id;
                IOController::IOStateList::iterator respond_it;
                bool respond_invert;
                bool respond_init = { false };
                bool respond_force = { false }; // флаг означающий принудительно обновлять значение датчика связи на каждом цикле проверки
                DelayTimer respondDelay;
                timeout_t channel_timeout = { 0 };
 
                inline bool operator < ( const MBSlaveInfo& mbs ) const noexcept
                {
                    return priority < mbs.priority;
                }
 
                bool init( std::shared_ptr<DebugStream>& mblog );
                bool check();
                void setUse( bool st );
 
                timeout_t recv_timeout;
                timeout_t aftersend_pause;
                timeout_t sleepPause_usec;
                bool force_disconnect;
 
                std::string myname;
 
                bool use = { false }; // флаг используется ли в данный момент этот канал
                bool initOK = { false };
                bool ignore = { false }; // игнорировать данное соединение (обычно флаг выставляется на время ignoreTimeout, если узел не отвечает, хотя связь есть.
                PassiveTimer ptIgnoreTimeout;
 
                const std::string getShortInfo() const;
 
                std::mutex mutInit;
            };
 
            typedef std::list<std::shared_ptr<MBSlaveInfo>> MBGateList;
 
            MBGateList mblist;
            MBGateList::reverse_iterator mbi;
 
            // т.к. TCP может "зависнуть" на подключении к недоступному узлу
            // делаем опрос в отдельном потоке
            std::unique_ptr< ThreadCreator<MBTCPMultiMaster> > pollThread; 
            std::unique_ptr< ThreadCreator<MBTCPMultiMaster> > checkThread; 
    };
    // --------------------------------------------------------------------------
} // end of namespace uniset
// -----------------------------------------------------------------------------
#endif // _MBTCPMultiMaster_H_
// -----------------------------------------------------------------------------