142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
/*
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* Copyright (C) 2019 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 "services/database/Db.hpp"
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#include <Wt/Dbo/FixedSqlConnectionPool.h>
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#include <Wt/Dbo/backend/Sqlite3.h>
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#include "services/database/Session.hpp"
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#include "services/database/User.hpp"
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#include "utils/IConfig.hpp"
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#include "utils/Service.hpp"
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#include "utils/Logger.hpp"
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namespace Database
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{
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namespace
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{
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class Connection : public Wt::Dbo::backend::Sqlite3
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{
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public:
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Connection(const std::filesystem::path& dbPath)
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: Wt::Dbo::backend::Sqlite3{ dbPath.string() }
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, _dbPath{ dbPath }
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{
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prepare();
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}
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Connection(const Connection& other)
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: Wt::Dbo::backend::Sqlite3{ other }
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, _dbPath{ other._dbPath }
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{
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prepare();
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}
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~Connection()
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{
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// make use of per-connection usage stats to optimize
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optimize();
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}
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private:
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Connection& operator=(const Connection&) = delete;
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std::unique_ptr<SqlConnection> clone() const override
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{
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return std::make_unique<Connection>(*this);
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}
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void prepare()
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{
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LMS_LOG(DB, DEBUG) << "Setting per-connection settings...";
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executeSql("pragma journal_mode=WAL");
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executeSql("pragma synchronous=normal");
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executeSql("pragma analysis_limit=2000"); // to help make analyze command faster, 1000 does not seem to be enough to speed up all queries
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LMS_LOG(DB, DEBUG) << "Setting per-connection settings done!";
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}
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void optimize()
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{
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LMS_LOG(DB, DEBUG) << "connection close: Running pragma optimize...";
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executeSql("pragma optimize");
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LMS_LOG(DB, DEBUG) << "connection close: pragma optimize complete";
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}
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std::filesystem::path _dbPath;
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};
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}
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// Session living class handling the database and the login
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Db::Db(const std::filesystem::path& dbPath, std::size_t connectionCount)
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{
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LMS_LOG(DB, INFO) << "Creating connection pool on file " << dbPath.string();
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auto connection{ std::make_unique<Connection>(dbPath.string()) };
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if (IConfig * config{ Service<IConfig>::get() })// may not be here on testU
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connection->setProperty("show-queries", config->getBool("db-show-queries", false) ? "true" : "false");
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auto connectionPool{ std::make_unique<Wt::Dbo::FixedSqlConnectionPool>(std::move(connection), connectionCount) };
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connectionPool->setTimeout(std::chrono::seconds{ 10 });
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_connectionPool = std::move(connectionPool);
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}
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void Db::executeSql(const std::string& sql)
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{
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ScopedConnection connection{ *_connectionPool };
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connection->executeSql(sql);
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}
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Session& Db::getTLSSession()
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{
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static thread_local Session* tlsSession{};
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if (!tlsSession)
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{
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auto newSession{ std::make_unique<Session>(*this) };
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tlsSession = newSession.get();
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{
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std::scoped_lock lock{ _tlsSessionsMutex };
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_tlsSessions.push_back(std::move(newSession));
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}
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}
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return *tlsSession;
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}
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Db::ScopedConnection::ScopedConnection(Wt::Dbo::SqlConnectionPool& pool)
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: _connectionPool{ pool }
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, _connection{ _connectionPool.getConnection() }
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{
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}
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Db::ScopedConnection::~ScopedConnection()
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{
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_connectionPool.returnConnection(std::move(_connection));
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}
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Wt::Dbo::SqlConnection* Db::ScopedConnection::operator->() const
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{
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return _connection.get();
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}
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} // namespace Database
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