133 lines
3.1 KiB
C++
133 lines
3.1 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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*/
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/*
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[1] Class DServerCmdShuffleSend 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 ~DServerCmdShuffleSend~
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1. Preliminaries
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1.1 Debug Output
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uncomment the following line
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*/
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//#define DS_CMD_OPEN_SEND_SHUFFLE_DEBUG 1
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/*
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1.2 Includes
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*/
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#include "DServerCmdShuffleSend.h"
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/*
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2 Implementation
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2.1 Method ~void run~
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implements the actual send functionality for the dshuffle operator
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*/
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void
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DServerCmdShuffleSend::run()
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{
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if (!checkWorkerAvailable())
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return;
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#ifdef DS_CMD_OPEN_SEND_SHUFFLE_DEBUG
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cout << (unsigned long)(this) << " DS_CMD_OPEN_SEND_SHUFFLE - start"
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<< endl;
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#endif
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//Initializes the writing of a tuple-stream,
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//the d_send_rel operator is started on the remote worker
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if (!startWorkerStreamCommunication())
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{
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return;
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}
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string port = int2Str((getBasePortNr()+getIndex()));
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string dIndexFunction =
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stringutils::replaceAll(getSendFunc(), "d_idx",
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"int " + getIndexStr());
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string com = "(query (d_send_shuffle (feed r" +
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getWorker() -> getName() + getIndexStr() +
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") (fun (tuple1 TUPLE) " + dIndexFunction + ") " +
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getWorker() -> getMasterHostIP_() + " p" + port + ") )";
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#ifdef DS_CMD_OPEN_SEND_SHUFFLE_DEBUG
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cout << (unsigned long)(this) << " DS_CMD_OPEN_SEND_SHUFFLE - send "
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<< getIndex() << ": " << com << endl;
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#endif
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// initiate d_send_shuffle command on the destination
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// worker
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//The d_send_rel operator is invoked
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// this command is blocking, until DShuffle is done!
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if (!sendSecondoCmdToWorkerNL(com))
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{
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string err;
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if (hasCmdError())
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err = getCmdErrorText();
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else
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err = "Could not start shuffle - sender function on worker!";
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getWorker() -> setErrorText(err);
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return;
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}
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#ifdef DS_CMD_OPEN_SEND_SHUFFLE_DEBUG
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cout << (unsigned long)(this) << " DS_CMD_OPEN_SEND_SHUFFLE - done"
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<< endl;
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#endif
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} // run()
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