[DB] Source reorg

src/database/updater/DatabaseFeatureExtractor.cpp

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2016 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "logger/Logger.hpp"
+
+#include "feature/FeatureExtractor.hpp"
+#include "feature/FeatureStore.hpp"
+#include "database/Setting.hpp"
+
+#include "DatabaseFeatureExtractor.hpp"
+
+namespace Database {
+
+static std::string getMBID(Track::id_type trackId)
+{
+	Wt::Dbo::Transaction transaction(UpdaterDboSession());
+	Track::pointer track = Track::getById(UpdaterDboSession(), trackId);
+	return track->getMBID();
+}
+
+void
+FeatureExtractor::handleFilesUpdated(void)
+{
+	bool fetchHighLevel = Setting::getBool(UpdaterDboSession(), "tags_highlevel_acousticbrainz");
+	bool fetchLowLevel = Setting::getBool(UpdaterDboSession(), "tags_similarity_acousticbrainz");
+
+	if (!fetchHighLevel && !fetchLowLevel)
+	{
+		LMS_LOG(DBUPDATER, INFO) << "No need to extract features";
+		return;
+	}
+
+	LMS_LOG(DBUPDATER, INFO) << "Processing tracks in order to extract features...";
+	std::vector<Track::id_type> trackIds = Track::getAllIds(UpdaterDboSession());
+	for (auto trackId : trackIds)
+	{
+		if (UpdaterQuitRequested())
+			return;
+
+		std::string mbid = getMBID(trackId);
+		if (mbid.empty())
+		{
+			LMS_LOG(DBUPDATER, DEBUG) << "No MBID for track " << trackId << ", skipping";
+			continue;
+		}
+
+		if (fetchLowLevel && !Feature::Store::instance().exists(UpdaterDboSession(), trackId, "low_level"))
+		{
+			boost::property_tree::ptree feature;
+			if (::Feature::Extractor::getLowLevel(feature, mbid))
+				Feature::Store::instance().set(UpdaterDboSession(), trackId, "low_level", feature);
+		}
+
+		if (fetchHighLevel && !Feature::Store::instance().exists(UpdaterDboSession(), trackId, "high_level"))
+		{
+			boost::property_tree::ptree feature;
+			if (::Feature::Extractor::getHighLevel(feature, mbid))
+				Feature::Store::instance().set(UpdaterDboSession(), trackId, "high_level", feature);
+		}
+	}
+
+	LMS_LOG(DBUPDATER, INFO) << "Features have been extracted";
+}
+
+} // namespace Database
+