Files
cameradar/cache_managers/mysql_cache_manager/include/db_conn.h
T
2016-05-23 21:22:12 +02:00

86 lines
2.2 KiB
C++

// Copyright 2016 Etix Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <cppconn/resultset.h> // for ResultSet
#include <mutex> // for mutex
#include <stdbool.h> // for bool, false
#include <string> // for string
#include <utility> // for pair, make_pair
#include "query_result.h"
namespace sql {
class Connection;
class Driver;
class ResultSet;
}
namespace etix {
namespace cameradar {
namespace mysql {
//! MySQL Database connection handling
//! Abstracts all connection to the database
class db_connection {
private:
static const std::string create_database_query;
//! SQL driver
sql::Driver* driver = nullptr;
//! SQL connection
sql::Connection* connection = nullptr;
std::mutex access_mtx;
bool connected = false;
std::string db_name;
//! Create the database if it doesn't exist at connector launch
empty_result create_database(void);
public:
db_connection(void);
~db_connection(void);
//! Try to connect to the database
std::pair<bool, std::string> connect(const std::string& host,
const std::string& user,
const std::string& pass,
const std::string& db_name,
bool create_db_if_not_exist = true);
//! Execute a MySQL command
empty_result execute(const std::string& request);
//! Execute a query
query_result<sql::ResultSet*> query(const std::string& query);
bool is_connected();
//! Return db_name
const std::string&
get_db_name(void) const {
return this->db_name;
}
};
} // mysql
} // cameradar
} // etix