155 lines
3.6 KiB
C++
155 lines
3.6 KiB
C++
/*
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* Copyright (C) 2016 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS 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 3 of the License, or
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* (at your option) any later version.
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*
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* LMS 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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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <boost/property_tree/json_parser.hpp>
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#include "utils/Config.hpp"
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#include "utils/Logger.hpp"
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#include "utils/Path.hpp"
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#include "FeatureStore.hpp"
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namespace Feature {
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Store::Store()
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{
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}
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Store&
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Store::instance(void)
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{
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static Store instance;
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return instance;
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}
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void
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Store::reload(void)
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{
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boost::filesystem::path cacheDir = _storePath = Config::instance().getString("cache-dir-path", "");
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if (!ensureDirectory(cacheDir))
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{
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LMS_LOG(DBUPDATER, ERROR) << "Cache directory '" << cacheDir << "' not valid";
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throw std::runtime_error("Cache directory '" + cacheDir.string() + "' not valid!");
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}
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_storePath = cacheDir / "features";
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if (!ensureDirectory(_storePath))
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{
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LMS_LOG(DBUPDATER, ERROR) << "Features directory '" << _storePath << "' not valid";
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throw std::runtime_error("Features directory '" + _storePath.string() + "' not valid");
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}
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}
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boost::filesystem::path getPath(boost::filesystem::path root, std::string mbid, std::string type)
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{
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return root / (mbid + "_" + type);
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}
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bool
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Store::exists(Wt::Dbo::Session& session, Database::Track::id_type trackId, std::string type)
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{
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if (_storePath.empty())
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reload();
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Wt::Dbo::Transaction transaction(session);
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auto track = Database::Track::getById(session, trackId);
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std::string mbid = track->getMBID();
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transaction.commit();
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if (mbid.empty())
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return false;
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boost::filesystem::path path = getPath(_storePath, mbid, type);
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return boost::filesystem::exists(path);
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}
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bool
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Store::get(Wt::Dbo::Session& session, Database::Track::id_type trackId, std::string type, Type& feature)
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{
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if (_storePath.empty())
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reload();
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Wt::Dbo::Transaction transaction(session);
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auto track = Database::Track::getById(session, trackId);
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std::string mbid = track->getMBID();
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transaction.commit();
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if (mbid.empty())
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return false;
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boost::filesystem::path path = getPath(_storePath, mbid, type);
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if (!boost::filesystem::exists(path))
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return false;
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try
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{
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std::ifstream iss(path.string().c_str(), std::ios::in);
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boost::property_tree::json_parser::read_json(iss, feature);
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}
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catch (boost::property_tree::ptree_error& e)
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{
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LMS_LOG(FEATURE, ERROR) << "JSON parsing failed: " << e.what();
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return false;
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}
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return true;
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}
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bool
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Store::set(Wt::Dbo::Session& session, Database::Track::id_type trackId, std::string type, const Type& feature)
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{
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if (_storePath.empty())
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reload();
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Wt::Dbo::Transaction transaction(session);
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auto track = Database::Track::getById(session, trackId);
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std::string mbid = track->getMBID();
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transaction.commit();
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if (mbid.empty())
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return false;
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boost::filesystem::path path = getPath(_storePath, mbid, type);
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try
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{
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std::ofstream oss(path.string().c_str(), std::ios::out);
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boost::property_tree::json_parser::write_json(oss, feature);
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}
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catch (boost::property_tree::ptree_error& e)
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{
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LMS_LOG(FEATURE, ERROR) << "JSON writing failed: " << e.what();
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return false;
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}
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return true;
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}
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} // namespace CoverArt
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