Migrated recommendation stuff

This commit is contained in:
emeric
2021-10-18 21:16:10 +02:00
parent a0489b2d94
commit 7386c89ae7
40 changed files with 189 additions and 131 deletions
@@ -23,7 +23,7 @@
#include <Wt/Auth/PasswordStrengthValidator.h>
#include <Wt/WRandom.h>
#include "auth/Types.hpp"
#include "services/auth/Types.hpp"
#include "database/Session.hpp"
#include "database/User.hpp"
#include "utils/Exception.hpp"
@@ -21,7 +21,7 @@
#include <shared_mutex>
#include "auth/IAuthTokenService.hpp"
#include "services/auth/IAuthTokenService.hpp"
#include "AuthServiceBase.hpp"
#include "LoginThrottler.hpp"
+2 -2
View File
@@ -17,9 +17,9 @@
* along with LMS. If not, see <http://www.gnu.org/licenses/>.
*/
#include "auth/IEnvService.hpp"
#include "services/auth/IEnvService.hpp"
#include "auth/Types.hpp"
#include "services/auth/Types.hpp"
#include "http-headers/HttpHeadersEnvService.hpp"
namespace Auth
@@ -27,7 +27,7 @@
#include "pam/PAMPasswordService.hpp"
#endif // LMS_SUPPORT_PAM
#include "auth/Types.hpp"
#include "services/auth/Types.hpp"
#include "database/Session.hpp"
#include "database/User.hpp"
#include "utils/Exception.hpp"
@@ -21,7 +21,7 @@
#include <shared_mutex>
#include "auth/IPasswordService.hpp"
#include "services/auth/IPasswordService.hpp"
#include "AuthServiceBase.hpp"
#include "LoginThrottler.hpp"
@@ -19,7 +19,7 @@
#pragma once
#include "auth/IEnvService.hpp"
#include "services/auth/IEnvService.hpp"
#include "AuthServiceBase.hpp"
namespace Auth
@@ -20,8 +20,8 @@
#include "InternalPasswordService.hpp"
#include <Wt/WRandom.h>
#include "auth/IAuthTokenService.hpp"
#include "auth/Types.hpp"
#include "services/auth/IAuthTokenService.hpp"
#include "services/auth/Types.hpp"
#include "database/Session.hpp"
#include "database/User.hpp"
#include "utils/Exception.hpp"
@@ -26,7 +26,7 @@
#include <cstring>
#include <security/pam_appl.h>
#include "auth/Types.hpp"
#include "services/auth/Types.hpp"
#include "database/Session.hpp"
#include "utils/Logger.hpp"
@@ -21,11 +21,11 @@
#include <string_view>
#include <boost/asio/ip/address.hpp>
#include <Wt/WDateTime.h>
#include <Wt/Dbo/ptr.h>
#include <boost/asio/ip/address.hpp>
#include "auth/Types.hpp"
#include "services/auth/Types.hpp"
#include "database/Types.hpp"
namespace Database
@@ -4,7 +4,7 @@ add_library(lmsrecommendation SHARED
impl/features/FeaturesEngineCache.cpp
impl/features/FeaturesEngine.cpp
impl/features/FeaturesDefs.cpp
impl/Engine.cpp
impl/RecommendationService.cpp
)
target_include_directories(lmsrecommendation INTERFACE
@@ -20,7 +20,7 @@
#pragma once
#include <memory>
#include "recommendation/IEngine.hpp"
#include "IEngine.hpp"
namespace Database
{
@@ -24,6 +24,7 @@
#include <string_view>
#include "database/Types.hpp"
#include "utils/EnumSet.hpp"
#include "services/recommendation/Types.hpp"
namespace Database
{
@@ -37,23 +38,9 @@ namespace Recommendation
public:
virtual ~IEngine() = default;
struct Progress
{
std::size_t totalElems {};
std::size_t processedElems {};
};
using ProgressCallback = std::function<void(const Progress&)>;
virtual void load(bool forceReload, const ProgressCallback& progressCallback = {}) = 0;
virtual void cancelLoad() = 0; // wait for cancel done
virtual void requestCancelLoad() = 0;
template <typename IdType>
using ResultContainer = std::vector<IdType>;
using ArtistContainer = ResultContainer<Database::ArtistId>;
using ReleaseContainer = ResultContainer<Database::ReleaseId>;
using TrackContainer = ResultContainer<Database::TrackId>;
virtual TrackContainer getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const = 0;
virtual TrackContainer getSimilarTracks(const std::vector<Database::TrackId>& tracksId, std::size_t maxCount) const = 0;
virtual ReleaseContainer getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const = 0;
@@ -17,7 +17,7 @@
* along with LMS. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Engine.hpp"
#include "RecommendationService.hpp"
#include <unordered_map>
#include <vector>
@@ -47,19 +47,19 @@ namespace Recommendation
throw LmsException {"Internal error"};
}
std::unique_ptr<IEngine>
createEngine(Database::Db& db)
std::unique_ptr<IRecommendationService>
createRecommendationService(Database::Db& db)
{
return std::make_unique<Engine>(db);
return std::make_unique<RecommendationService>(db);
}
Engine::Engine(Database::Db& db)
RecommendationService::RecommendationService(Database::Db& db)
: _db {db}
{
}
Engine::TrackContainer
Engine::getSimilarTracksFromTrackList(Database::TrackListId trackListId, std::size_t maxCount) const
TrackContainer
RecommendationService::getSimilarTracksFromTrackList(Database::TrackListId trackListId, std::size_t maxCount) const
{
TrackContainer res;
@@ -78,8 +78,8 @@ namespace Recommendation
return res;
}
Engine::TrackContainer
Engine::getSimilarTracks(const std::vector<Database::TrackId>& trackIds, std::size_t maxCount) const
TrackContainer
RecommendationService::getSimilarTracks(const std::vector<Database::TrackId>& trackIds, std::size_t maxCount) const
{
TrackContainer res;
@@ -102,8 +102,8 @@ namespace Recommendation
return res;
}
Engine::ReleaseContainer
Engine::getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const
ReleaseContainer
RecommendationService::getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const
{
ReleaseContainer res;
@@ -128,8 +128,8 @@ namespace Recommendation
return res;
}
Engine::ArtistContainer
Engine::getSimilarArtists(Database::ArtistId artistId, EnumSet<Database::TrackArtistLinkType> linkTypes, std::size_t maxCount) const
ArtistContainer
RecommendationService::getSimilarArtists(Database::ArtistId artistId, EnumSet<Database::TrackArtistLinkType> linkTypes, std::size_t maxCount) const
{
ArtistContainer res;
@@ -162,7 +162,7 @@ namespace Recommendation
}
void
Engine::load(bool forceReload, const ProgressCallback& progressCallback)
RecommendationService::load(bool forceReload, const ProgressCallback& progressCallback)
{
using namespace Database;
@@ -208,18 +208,18 @@ namespace Recommendation
}
void
Engine::loadPendingEngine(EngineType engineType, std::unique_ptr<IEngine> engine, bool forceReload, const ProgressCallback& progressCallback)
RecommendationService::loadPendingEngine(EngineType engineType, std::unique_ptr<IEngine> engine, bool forceReload, const ProgressCallback& progressCallback)
{
if (!_loadCancelled)
{
LMS_LOG(RECOMMENDATION, INFO) << "Initializing engine '" << engineTypeToString(engineType) << "'...";
auto progress {[&](const IEngine::Progress& progress)
auto progress {[&](const Progress& progress)
{
progressCallback(progress);
}};
engine->load(forceReload, progressCallback ? progress : IEngine::ProgressCallback {});
engine->load(forceReload, progressCallback ? progress : ProgressCallback {});
{
std::scoped_lock lock {_controlMutex};
@@ -236,7 +236,7 @@ namespace Recommendation
}
void
Engine::cancelLoad()
RecommendationService::cancelLoad()
{
LMS_LOG(RECOMMENDATION, DEBUG) << "Cancelling loading...";
@@ -25,7 +25,8 @@
#include <unordered_map>
#include <vector>
#include "recommendation/IEngine.hpp"
#include "services/recommendation/IRecommendationService.hpp"
#include "IEngine.hpp"
namespace Database
{
@@ -40,21 +41,20 @@ namespace Recommendation
Features,
};
class Engine : public IEngine
class RecommendationService : public IRecommendationService
{
public:
Engine(Database::Db& db);
~Engine() = default;
RecommendationService(Database::Db& db);
~RecommendationService() = default;
Engine(const Engine&) = delete;
Engine(Engine&&) = delete;
Engine& operator=(const Engine&) = delete;
Engine& operator=(Engine&&) = delete;
RecommendationService(const RecommendationService&) = delete;
RecommendationService(RecommendationService&&) = delete;
RecommendationService& operator=(const RecommendationService&) = delete;
RecommendationService& operator=(RecommendationService&&) = delete;
private:
void load(bool forceReload, const ProgressCallback& progressCallback) override;
void cancelLoad() override;
void requestCancelLoad() override {};
TrackContainer getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const override;
TrackContainer getSimilarTracks(const std::vector<Database::TrackId>& tracksId, std::size_t maxCount) const override;
@@ -34,7 +34,7 @@ std::unique_ptr<IEngine> createClustersEngine(Database::Db& db)
return std::make_unique<ClusterEngine>(db);
}
IEngine::TrackContainer
TrackContainer
ClusterEngine::getSimilarTracks(const std::vector<Database::TrackId>& trackIds, std::size_t maxCount) const
{
Database::Session& dbSession {_db.getTLSSession()};
@@ -52,7 +52,7 @@ ClusterEngine::getSimilarTracks(const std::vector<Database::TrackId>& trackIds,
return res;
}
IEngine::ResultContainer<Database::TrackId>
TrackContainer
ClusterEngine::getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const
{
Database::Session& dbSession {_db.getTLSSession()};
@@ -74,7 +74,7 @@ ClusterEngine::getSimilarTracksFromTrackList(Database::TrackListId tracklistId,
return res;
}
IEngine::ResultContainer<Database::ReleaseId>
ReleaseContainer
ClusterEngine::getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const
{
Database::Session& dbSession {_db.getTLSSession()};
@@ -95,7 +95,7 @@ ClusterEngine::getSimilarReleases(Database::ReleaseId releaseId, std::size_t max
return res;
}
IEngine::ResultContainer<Database::ArtistId>
ArtistContainer
ClusterEngine::getSimilarArtists(Database::ArtistId artistId, EnumSet<Database::TrackArtistLinkType> artistLinkTypes, std::size_t maxCount) const
{
Database::Session& dbSession {_db.getTLSSession()};
@@ -19,7 +19,7 @@
#pragma once
#include "recommendation/IEngine.hpp"
#include "IEngine.hpp"
namespace Recommendation
{
@@ -37,7 +37,6 @@ namespace Recommendation
private:
void load(bool, const ProgressCallback&) override {}
void requestCancelLoad() override {}
void cancelLoad() {}
TrackContainer getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const override;
TrackContainer getSimilarTracks(const std::vector<Database::TrackId>& tracksId, std::size_t maxCount) const override;
@@ -248,7 +248,7 @@ FeaturesEngine::loadFromCache(FeaturesEngineCache cache)
load(std::move(cache._network), cache._trackPositions);
}
IEngine::TrackContainer
TrackContainer
FeaturesEngine::getSimilarTracksFromTrackList(Database::TrackListId trackListId, std::size_t maxCount) const
{
const TrackContainer trackIds {[&]
@@ -269,7 +269,7 @@ FeaturesEngine::getSimilarTracksFromTrackList(Database::TrackListId trackListId,
return getSimilarTracks(trackIds, maxCount);
}
IEngine::TrackContainer
TrackContainer
FeaturesEngine::getSimilarTracks(const std::vector<Database::TrackId>& tracksIds, std::size_t maxCount) const
{
auto similarTrackIds {getSimilarObjects(tracksIds, _trackMatrix, _trackPositions, maxCount)};
@@ -290,7 +290,7 @@ FeaturesEngine::getSimilarTracks(const std::vector<Database::TrackId>& tracksIds
return similarTrackIds;
}
IEngine::ReleaseContainer
ReleaseContainer
FeaturesEngine::getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const
{
auto similarReleaseIds {getSimilarObjects({releaseId}, _releaseMatrix, _releasePositions, maxCount)};
@@ -312,12 +312,12 @@ FeaturesEngine::getSimilarReleases(Database::ReleaseId releaseId, std::size_t ma
return similarReleaseIds;
}
std::vector<Database::ArtistId>
ArtistContainer
FeaturesEngine::getSimilarArtists(Database::ArtistId artistId, EnumSet<Database::TrackArtistLinkType> linkTypes, std::size_t maxCount) const
{
auto getSimilarArtistIdsForLinkType {[&] (Database::TrackArtistLinkType linkType)
{
std::vector<Database::ArtistId> similarArtistIds;
ArtistContainer similarArtistIds;
const auto itArtists {_artistMatrix.find(linkType)};
if (itArtists == std::cend(_artistMatrix))
@@ -336,7 +336,7 @@ FeaturesEngine::getSimilarArtists(Database::ArtistId artistId, EnumSet<Database:
similarArtistIds.insert(std::begin(similarArtistIdsForLinkType), std::end(similarArtistIdsForLinkType));
}
std::vector<Database::ArtistId> res(std::cbegin(similarArtistIds), std::cend(similarArtistIds));
ArtistContainer res(std::cbegin(similarArtistIds), std::cend(similarArtistIds));
Database::Session& session {_db.getTLSSession()};
{
@@ -26,10 +26,10 @@
#include <string>
#include <vector>
#include "recommendation/IEngine.hpp"
#include "som/DataNormalizer.hpp"
#include "som/Network.hpp"
#include "utils/Utils.hpp"
#include "IEngine.hpp"
#include "FeaturesEngineCache.hpp"
#include "FeaturesDefs.hpp"
@@ -62,7 +62,6 @@ class FeaturesEngine : public IEngine
private:
void load(bool forceReload, const ProgressCallback& progressCallback) override;
void requestCancelLoad() override;
void cancelLoad() override {}
TrackContainer getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const override;
TrackContainer getSimilarTracks(const std::vector<Database::TrackId>& tracksId, std::size_t maxCount) const override;
@@ -0,0 +1,51 @@
/*
* Copyright (C) 2019 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/>.
*/
#pragma once
#include <memory>
#include <string_view>
#include "utils/EnumSet.hpp"
#include "services/recommendation/Types.hpp"
namespace Database
{
class Db;
}
namespace Recommendation
{
class IRecommendationService
{
public:
virtual ~IRecommendationService() = default;
virtual void load(bool forceReload, const ProgressCallback& progressCallback = {}) = 0;
virtual void cancelLoad() = 0; // wait for cancel done
virtual TrackContainer getSimilarTracksFromTrackList(Database::TrackListId tracklistId, std::size_t maxCount) const = 0;
virtual TrackContainer getSimilarTracks(const std::vector<Database::TrackId>& tracksId, std::size_t maxCount) const = 0;
virtual ReleaseContainer getSimilarReleases(Database::ReleaseId releaseId, std::size_t maxCount) const = 0;
virtual ArtistContainer getSimilarArtists(Database::ArtistId artistId, EnumSet<Database::TrackArtistLinkType> linkTypes, std::size_t maxCount) const = 0;
};
std::unique_ptr<IRecommendationService> createRecommendationService(Database::Db& db);
} // ns Recommendation
@@ -0,0 +1,22 @@
#pragma once
#include <functional>
#include "database/Types.hpp"
namespace Recommendation
{
struct Progress
{
std::size_t totalElems {};
std::size_t processedElems {};
};
using ProgressCallback = std::function<void(const Progress&)>;
template <typename IdType>
using ResultContainer = std::vector<IdType>;
using ArtistContainer = ResultContainer<Database::ArtistId>;
using ReleaseContainer = ResultContainer<Database::ReleaseId>;
using TrackContainer = ResultContainer<Database::TrackId>;
} // namespace Recommendation
+13 -13
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@@ -32,7 +32,7 @@
#include "database/TrackArtistLink.hpp"
#include "database/TrackFeatures.hpp"
#include "metadata/TagLibParser.hpp"
#include "recommendation/IEngine.hpp"
#include "services/recommendation/IRecommendationService.hpp"
#include "utils/Exception.hpp"
#include "utils/Logger.hpp"
#include "utils/Path.hpp"
@@ -249,13 +249,13 @@ getOrCreateClusters(Session& session, const MetaData::Clusters& clustersNames)
namespace Scanner {
std::unique_ptr<IScanner>
createScanner(Database::Db& db, Recommendation::IEngine& recommendationEngine)
createScanner(Database::Db& db, Recommendation::IRecommendationService& recommendationService)
{
return std::make_unique<Scanner>(db, recommendationEngine);
return std::make_unique<Scanner>(db, recommendationService);
}
Scanner::Scanner(Database::Db& db, Recommendation::IEngine& recommendationEngine)
: _recommendationEngine {recommendationEngine}
Scanner::Scanner(Database::Db& db, Recommendation::IRecommendationService& recommendationService)
: _recommendationService {recommendationService}
, _dbSession {db}
{
// For now, always use TagLib
@@ -284,8 +284,8 @@ Scanner::start()
if (_abortScan)
return;
_recommendationEngine.load(false,
[](const Recommendation::IEngine::Progress& progress)
_recommendationService.load(false,
[](const Recommendation::Progress& progress)
{
LMS_LOG(DBUPDATER, DEBUG) << "Reloading recommendation : " << progress.processedElems << "/" << progress.totalElems;
});
@@ -302,7 +302,7 @@ Scanner::stop()
_abortScan = true;
_scheduleTimer.cancel();
_recommendationEngine.cancelLoad();
_recommendationService.cancelLoad();
_ioService.stop();
}
@@ -316,7 +316,7 @@ Scanner::abortScan()
_abortScan = true;
_scheduleTimer.cancel();
_recommendationEngine.cancelLoad();
_recommendationService.cancelLoad();
_ioService.stop();
LMS_LOG(DBUPDATER, DEBUG) << "Scan abort done!";
@@ -571,7 +571,7 @@ Scanner::fetchTrackFeatures(Database::TrackId trackId, const UUID& recordingMBID
void
Scanner::fetchTrackFeatures(ScanStats& stats)
{
if (_recommendationEngineType != ScanSettings::RecommendationEngineType::Features)
if (_recommendationServiceType != ScanSettings::RecommendationEngineType::Features)
return;
ScanStepStats stepStats{stats.startTime, ScanProgressStep::FetchingTrackFeatures};
@@ -638,7 +638,7 @@ Scanner::refreshScanSettings()
[](const std::filesystem::path& extension) { return std::filesystem::path{ StringUtils::stringToLower(extension.string()) }; });
}
_mediaDirectory = scanSettings->getMediaDirectory();
_recommendationEngineType = scanSettings->getRecommendationEngineType();
_recommendationServiceType = scanSettings->getRecommendationEngineType();
const auto clusterTypes = scanSettings->getClusterTypes();
std::set<std::string> clusterTypeNames;
@@ -1037,7 +1037,7 @@ Scanner::reloadSimilarityEngine(ScanStats& stats)
{
ScanStepStats stepStats {stats.startTime, ScanProgressStep::ReloadingSimilarityEngine};
auto progressCallback {[&](const Recommendation::IEngine::Progress& progress)
auto progressCallback {[&](const Recommendation::Progress& progress)
{
stepStats.totalElems = progress.totalElems;
stepStats.processedElems = progress.processedElems;
@@ -1045,7 +1045,7 @@ Scanner::reloadSimilarityEngine(ScanStats& stats)
}};
notifyInProgress(stepStats);
_recommendationEngine.load(stats.nbChanges() > 0, progressCallback);
_recommendationService.load(stats.nbChanges() > 0, progressCallback);
notifyInProgress(stepStats);
}
+4 -4
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@@ -41,7 +41,7 @@ class UUID;
namespace Recommendation
{
class IEngine;
class IRecommendationService;
}
namespace Scanner {
@@ -49,7 +49,7 @@ namespace Scanner {
class Scanner : public IScanner
{
public:
Scanner(Database::Db& db, Recommendation::IEngine& recommendationEngine);
Scanner(Database::Db& db, Recommendation::IRecommendationService& recommendationService);
~Scanner();
Scanner(const Scanner&) = delete;
@@ -92,7 +92,7 @@ class Scanner : public IScanner
void notifyInProgress(const ScanStepStats& stats);
void reloadSimilarityEngine(ScanStats& stats);
Recommendation::IEngine& _recommendationEngine;
Recommendation::IRecommendationService& _recommendationService;
std::mutex _controlMutex;
std::atomic<bool> _abortScan {};
@@ -115,7 +115,7 @@ class Scanner : public IScanner
Database::ScanSettings::UpdatePeriod _updatePeriod {Database::ScanSettings::UpdatePeriod::Never};
std::unordered_set<std::filesystem::path> _fileExtensions;
std::filesystem::path _mediaDirectory;
Database::ScanSettings::RecommendationEngineType _recommendationEngineType;
Database::ScanSettings::RecommendationEngineType _recommendationServiceType;
};
} // Scanner
@@ -31,7 +31,7 @@ namespace Database
namespace Recommendation
{
class IEngine;
class IRecommendationService;
}
namespace Scanner
@@ -66,7 +66,7 @@ namespace Scanner
virtual Events& getEvents() = 0;
};
std::unique_ptr<IScanner> createScanner(Database::Db& db, Recommendation::IEngine& recommendationEngine);
std::unique_ptr<IScanner> createScanner(Database::Db& db, Recommendation::IRecommendationService& recommendationEngine);
} // Scanner
+5 -5
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@@ -26,8 +26,8 @@
#include <Wt/WLocalDateTime.h>
#include "auth/IPasswordService.hpp"
#include "auth/IEnvService.hpp"
#include "services/auth/IPasswordService.hpp"
#include "services/auth/IEnvService.hpp"
#include "database/Artist.hpp"
#include "database/Cluster.hpp"
#include "database/Db.hpp"
@@ -37,7 +37,7 @@
#include "database/TrackBookmark.hpp"
#include "database/TrackList.hpp"
#include "database/User.hpp"
#include "recommendation/IEngine.hpp"
#include "services/recommendation/IRecommendationService.hpp"
#include "services/scrobbling/IScrobblingService.hpp"
#include "services/cover/ICoverService.hpp"
#include "utils/IConfig.hpp"
@@ -905,7 +905,7 @@ handleGetArtistInfoRequestCommon(RequestContext& context, bool id3)
artistInfoNode.createChild("musicBrainzId").setValue(artistMBID->getAsString());
}
auto similarArtistsId {Service<Recommendation::IEngine>::get()->getSimilarArtists(id, {TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist}, count)};
auto similarArtistsId {Service<Recommendation::IRecommendationService>::get()->getSimilarArtists(id, {TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist}, count)};
{
auto transaction {context.dbSession.createSharedTransaction()};
@@ -1141,7 +1141,7 @@ handleGetSimilarSongsRequestCommon(RequestContext& context, bool id3)
// Optional params
std::size_t count {getParameterAs<std::size_t>(context.parameters, "count").value_or(50)};
const auto similarArtistIds {Service<Recommendation::IEngine>::get()->getSimilarArtists(artistId, {TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist}, 5)};
const auto similarArtistIds {Service<Recommendation::IRecommendationService>::get()->getSimilarArtists(artistId, {TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist}, 5)};
auto transaction {context.dbSession.createSharedTransaction()};