mirror of
https://github.com/FairRootGroup/FairMQ.git
synced 2025-10-13 08:41:16 +00:00
130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
/********************************************************************************
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* Copyright (C) 2019 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 Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#include "DDSEnvironment.h"
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#include <fairmq/Tools.h>
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#include <fairmq/sdk/DDSInfo.h>
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#include <fairlogger/Logger.h>
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#include <DDS/Tools.h>
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#include <DDS/dds_intercom.h>
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#include <cstdlib>
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#include <sstream>
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#include <utility>
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namespace fair {
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namespace mq {
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namespace sdk {
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struct DDSEnvironment::Impl
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{
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explicit Impl(Path configHome)
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: fLocation(DDSInstallPrefix)
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, fConfigHome(std::move(configHome))
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{
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SetupLocation();
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SetupDynamicLoader();
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SetupPath();
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SetupConfigHome();
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}
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auto SetupLocation() -> void
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{
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std::string location(GetEnv("DDS_LOCATION"));
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if (location != DDSInstallPrefix) {
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if (location.empty()) {
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setenv("DDS_LOCATION", DDSInstallPrefix.c_str(), 1);
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} else {
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LOG(debug) << "$DDS_LOCATION appears to point to a different installation than this"
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<< "program was linked against. Things might still work out, so not"
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<< "touching it.";
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fLocation = location;
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}
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}
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}
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auto SetupConfigHome() -> void
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{
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if (fConfigHome.empty()) {
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fConfigHome = GetEnv("HOME");
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} else {
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setenv("HOME", fConfigHome.c_str(), 1);
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}
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std::istringstream cmd;
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cmd.str("DDS_CFG=`dds-user-defaults --ignore-default-sid -p`\n"
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"if [ -z \"$DDS_CFG\" ]; then\n"
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" mkdir -p \"$HOME/.DDS\"\n"
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" dds-user-defaults --ignore-default-sid -d -c \"$HOME/.DDS/DDS.cfg\"\n"
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"fi");
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std::system(cmd.str().c_str());
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}
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auto SetupPath() -> void
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{
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std::string path(GetEnv("PATH"));
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Path ddsExecDir = (fLocation == DDSInstallPrefix) ? DDSExecutableDir : fLocation / Path("bin");
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path = ddsExecDir.string() + std::string(":") + path;
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setenv("PATH", path.c_str(), 1);
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}
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auto SetupDynamicLoader() -> void
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{
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#ifdef __APPLE__
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std::string ldVar("DYLD_LIBRARY_PATH");
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#else
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std::string ldVar("LD_LIBRARY_PATH");
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#endif
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std::string ld(GetEnv(ldVar));
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Path ddsLibDir = (fLocation == DDSInstallPrefix) ? DDSLibraryDir : fLocation / Path("lib");
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ld = ddsLibDir.string() + std::string(":") + ld;
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setenv(ldVar.c_str(), ld.c_str(), 1);
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}
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auto GetEnv(const std::string& key) -> std::string
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{
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auto value = std::getenv(key.c_str());
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if (value) {
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return {value};
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}
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return {};
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}
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struct Tag {};
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friend auto operator<<(std::ostream& os, Tag) -> std::ostream& { return os << "DDSEnvironment"; }
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tools::InstanceLimiter<Tag, 1> fCount;
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Path fLocation;
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Path fConfigHome;
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};
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DDSEnvironment::DDSEnvironment()
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: DDSEnvironment(Path())
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{}
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DDSEnvironment::DDSEnvironment(Path configHome)
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: fImpl(std::make_shared<Impl>(std::move(configHome)))
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{}
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auto DDSEnvironment::GetLocation() const -> Path { return fImpl->fLocation; }
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auto DDSEnvironment::GetConfigHome() const -> Path { return fImpl->fConfigHome; }
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auto operator<<(std::ostream& os, DDSEnvironment env) -> std::ostream&
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{
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return os << "$DDS_LOCATION: " << env.GetLocation() << ", "
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<< "$DDS_CONFIG_HOME: " << env.GetConfigHome() / DDSEnvironment::Path(".DDS");
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}
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} // namespace sdk
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} // namespace mq
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} // namespace fair
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