225 lines
4.8 KiB
C++
225 lines
4.8 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2012, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//paragraph [1] Title: [{\Large \bf \begin{center}] [\end{center}}]
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//paragraph [10] Footnote: [{\footnote{] [}}]
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//[TOC] [\tableofcontents]
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//[_] [\_]
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//[&] [\&]
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//[x] [\ensuremath{\times}]
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//[->] [\ensuremath{\rightarrow}]
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//[>] [\ensuremath{>}]
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//[<] [\ensuremath{<}]
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//[ast] [\ensuremath{\ast}]
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[1] Class DServerCmdWorkerCommunication Implementation
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\begin{center}
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April 2012 Thomas Achmann
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\end{center}
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[TOC]
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0 Description
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Implementation of the class ~DServerCmdWorkerCommunication~
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1 Preliminaries
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1.1 Includes
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*/
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#include "DServer.h"
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#include "DServerCmdWorkerComm.h"
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#include "SocketIO.h"
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/*
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2 Implementation
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2.1 Method ~bool checkWorkerAvailable~
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* returns true, if worker is running
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*/
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bool
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DServerCmdWorkerCommunication::checkWorkerAvailable() const
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{
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if ( m_worker -> getServer() == 0 ||
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!(m_worker -> getServer() -> IsOk()))
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{
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return false;
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}
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return true;
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}
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/*
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2.2 Method ~bool startSocketCommunication~
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* returns true - success
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*/
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bool
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DServerCmdWorkerCommunication::startWorkerStreamCommunication()
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{
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if (m_workerIoStrOpen)
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{
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setCmdErrorText("Communication to worker already opened!");
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return false;
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}
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if (m_worker == NULL)
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{
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setCmdErrorText("No worker assigned yet!");
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return false;
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}
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if (m_worker -> getServer() == 0)
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{
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setCmdErrorText("No server assigned yet!");
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return false;
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}
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if (!setStream(m_worker -> getServer() -> GetSocketStream()))
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{
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setCmdErrorText("Could not initiate communication to worker!");
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return false;
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}
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m_workerIoStrOpen = true;
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return true;
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}
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/*
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2.3 Method ~bool closeWorkerSocketCommunication~
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* returns true - success
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*/
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bool
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DServerCmdWorkerCommunication::closeWorkerStreamCommunication()
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{
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return true;
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if (!m_workerIoStrOpen)
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{
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const string errMsg =
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"Cannot close worker cmd - connection " +
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m_worker -> getServerHostName() + ":" +
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int2Str(m_worker -> getServerPort()) +
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" : no stream opened!";
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setCmdErrorText(errMsg);
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return false;
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}
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#ifdef DS_CMD_WORKER_COMM
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cout << "CLOSING WORKER connection "
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<< m_worker -> getServerHostName() << ":"
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<< m_worker -> getServerPort() << endl;
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#endif
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m_worker -> getServer() -> Close();
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return true;
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}
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/*
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Private method ~bool sendSecondoCmdToWorkerThreaded~
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sends the command to
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* const string[&] inCmd - command string
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* int inFlag - 0:nested list format, 1:regular SOS fromat
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* bool useThreads - true: command is started in a separate thread
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* returns: true - success; false - error
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*/
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bool
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DServerCmdWorkerCommunication::
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sendSecondoCmdToWorkerThreaded(const string& inCmd,
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int inFlag,
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bool useThreads)
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{
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#ifdef DS_CMD_WORKER_COMM
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cout << (unsigned long)this << "SecondoCmd:"
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<< inFlag << " - "<< inCmd << " as " << endl;
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if (useThreads)
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cout << " Thread";
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else
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cout << " NO Thread";
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cout << endl;
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#endif
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bool ret = true;
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if (useThreads)
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{
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DServerCmdWorkerCommunicationThreaded* commThread =
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new DServerCmdWorkerCommunicationThreaded(this,
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inCmd,
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inFlag);
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assert (m_exec == NULL);
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m_exec = new ZThread::ThreadedExecutor();
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m_exec -> execute(commThread);
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}
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else
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{
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assert (m_exec == NULL);
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ret = sendSecondoCmd(inFlag, inCmd);
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if (!ret)
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setCmdErrorText("Unable to send the following Secondo Command:\n" +
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inCmd);
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}
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return ret;
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}
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/*
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3.3 Method ~void run~
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*/
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void
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DServerCmdWorkerCommunicationThreaded::run()
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{
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restoreStream(m_caller -> rentStream());
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setStreamOpen();
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bool ret =
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sendSecondoCmd(m_flag, m_cmd);
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if (ret)
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ret = waitForSecondoResult(m_cmd);
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if (!ret || hasCmdError())
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m_caller -> setCmdErrorText(getCmdErrorText());
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m_caller -> setCmdResult(getCmdResult());
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}
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