TCPDirectGettingStarted.cpp File Reference

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Functions
int	main (int argc, char *argv[])

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

Definition at line 34 of file TCPDirectGettingStarted.cpp.

{
    // `--help` to show options.
    const AppConfiguration<
            SettingsConfiguration
            , ConnectivityConfiguration
            , LogonConfiguration
            , NetworkInterfaceConfiguration
            , StorageConfiguration<SessionStorageType::FileBased>
            > cfg{"TCPDirectGettingStarted", argc, argv};
 
    try
    {
        SignalHelper::manageSignals();
 
        auto settings = fillSettings(cfg);
        const auto emulator = createEmulator(settings, cfg, true);
 
        // Request Binary Order Gateway credentials from Binary Utility Service Gateway (using OS sockets)
        const auto bgwCredentials = receiveBgwCredentials(settings, cfg.host(), cfg.port());
 
        class TcpDirectListener : public Listener
        {
        public:
            explicit TcpDirectListener(const LogonConfiguration& cfg)
                : traderLogonRequest_(Helper::createTraderLogonRequest(cfg.traderId(), cfg.traderPwd()))
                , order_(Helper::createOrder(cfg.traderId()))
            {
            }
 
            void onTraderLogonReport(const Messaging::TraderLogonReport msg, Session* session)  override
            {
                Listener::onTraderLogonReport(msg, session);
 
                try
                {
                    traderLoggedOn.get_future().get();
                }
                catch(const std::exception& e)
                {
                    onError(SessionErrorReason::UnsuccessfulLogonReportInReplyOnLogonRequest, e.what(), session, msg);
                    return;
                }
 
                session->send(order_);
            }
 
            void onStateChange(SessionStateId::Enum newState, SessionStateId::Enum prevState, Session * session) override
            {
                Listener::onStateChange(newState, prevState, session);
 
                switch(newState)
                {
                    case SessionStateId::Established:
                    {
                        // The TCPDirect technology is NOT thread-safe.
                        // Therefore, the event dispatching and message sending should be performed from the same thread.
                        session->send(traderLogonRequest_);
                        break;
                    }
 
                    case SessionStateId::Disconnected:
                        finished_ = true;
                        break;
 
                    default:
                        break;
                }
            }
 
            using Samples::Listener::onError;
 
            void onError(
                SessionErrorReason::Enum reason, const std::string & text, Session * session, Messaging::SbeMessage msg) override
            {
                Listener::onError(reason, text, session, msg);
                finished_ = true;
            }
 
            bool finished() const noexcept {return finished_;}
 
        private:
            bool finished_ {false};
            MessageHolder<TraderLogonRequest> traderLogonRequest_;
            MessageHolder<NewOrderRequest> order_;
        }
        listener(cfg);
 
 
        TcpDirectAttr attr;
 
        // The default interface name could be provided by the environment variable
        // ZF_ATTR="interface=<interface-name>", see TCPDirect specs,
        attr.set("interface", cfg.nif());
 
        TcpDirectStack stack{attr};
 
        // A 'BGW' session
        const auto bgwSession= std::make_unique<BgwSession>(stack, settings, &listener, cfg.storage());
        bgwSession->connectAsync(bgwCredentials);
 
        std::clog << "\nPress <Ctrl+C> to disconnect the BGW session and terminate the application." << std::endl;
 
        while(!listener.finished())
        {
            // The TCPDirect technology is NOT thread-safe.
            // Therefore, the event dispatching and message sending should be performed from the same thread.
            stack.dispatchEvents();
 
            if(SignalHelper::interruptDetected())
                break;
        }
 
        bgwSession->disconnectAsync();
 
        while(!stack.isQuiescent())
            stack.dispatchEvents();
    }
    catch(const std::exception & ex)
    {
        std::cerr << "\nEXCEPTION: " << ex.what() << std::endl;
        return 1;
    }
 
    return 0;
}