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https://github.com/FairRootGroup/FairMQ.git
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e184610c06
A parser implementation for FairMQ channel properties. The parser handles a comma separated key=value list format by using the getsubopt function of the standard library. The option key '--channel-config' can be used with the list of key/value pairs like e.g. --channel-config name=output,type=push,method=bind
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/********************************************************************************
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* Copyright (C) 2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public License version 3 (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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/// @file FairMQSuboptParser.cxx
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/// @author Matthias.Richter@scieq.net
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/// @since 2017-03-30
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/// @brief Parser implementation for key-value subopt format
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#include "FairMQSuboptParser.h"
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#include <boost/property_tree/ptree.hpp>
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#include <cstring>
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using boost::property_tree::ptree;
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namespace FairMQParser
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{
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constexpr const char* SUBOPT::channelOptionKeys[];
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FairMQMap SUBOPT::UserParser(const po::variables_map& omap, const std::string& deviceId, const std::string& rootNode)
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{
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std::string nodeKey = rootNode + ".device";
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ptree pt;
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pt.put(nodeKey + ".id", deviceId.c_str());
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nodeKey += ".channels";
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// parsing of channel properties is the only implemented method right now
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if (omap.count(OptionKeyChannelConfig) > 0) {
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std::map<std::string, ptree> channelProperties;
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auto tokens = omap[OptionKeyChannelConfig].as<std::vector<std::string>>();
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for (auto token : tokens) {
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std::map<std::string, ptree>::iterator channelProperty = channelProperties.end();
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ptree socketProperty;
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std::string channelName;
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std::string argString(token);
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char* subopts = &argString[0];
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char* value = nullptr;
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while (subopts && *subopts != 0 && *subopts != ' ') {
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char* saved = subopts;
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int subopt=getsubopt(&subopts, (char**)channelOptionKeys, &value);
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if (subopt == NAME) {
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channelName = value;
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channelProperties[channelName].put("name", channelName);
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} else
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if (subopt>=0 && value != nullptr) {
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socketProperty.put(channelOptionKeys[subopt], value);
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}
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}
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if (channelName != "") {
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channelProperties[channelName].add_child("sockets.socket", socketProperty);
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} else {
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// TODO: what is the error policy here, should we abort?
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LOG(ERROR) << "missing channel name in argument of option --channel-config";
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}
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}
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for (auto channelProperty : channelProperties) {
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pt.add_child(nodeKey + ".channel", channelProperty.second);
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}
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}
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return ptreeToMQMap(pt, deviceId, rootNode);
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}
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} // namespace FairMQMap
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