ClickHouse/base/mysqlxx/PoolFactory.h
alexey-milovidov c7863e1ac6
Clang Tidy, part 7 ()
* Attempt to enable identifier naming check

* Attempt to enable identifier naming check, continue

* Progress on identifier names

* Adopt identifier names check

* Fixed error

* Merge with master

* Fixed build

* Fixed build

* Fixed build

* Fixed build

* Fixed build

* Fixed error

* Fixed error

* Fixed error
2020-03-23 05:12:31 +03:00

56 lines
1.5 KiB
C++

#pragma once
#include <mutex>
#include <memory>
#include <boost/noncopyable.hpp>
#include <mysqlxx/PoolWithFailover.h>
#define MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_START_CONNECTIONS 1
#define MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_CONNECTIONS 16
#define MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_TRIES 3
namespace mysqlxx
{
/*
* PoolFactory.h
* This class is a helper singleton to mutualize connections to MySQL.
*/
class PoolFactory final : private boost::noncopyable
{
public:
static PoolFactory & instance();
PoolFactory(const PoolFactory &) = delete;
/** Allocates a PoolWithFailover to connect to MySQL. */
PoolWithFailover get(const std::string & config_name,
unsigned default_connections = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_START_CONNECTIONS,
unsigned max_connections = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_CONNECTIONS,
size_t max_tries = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_TRIES);
/** Allocates a PoolWithFailover to connect to MySQL. */
PoolWithFailover get(const Poco::Util::AbstractConfiguration & config,
const std::string & config_name,
unsigned default_connections = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_START_CONNECTIONS,
unsigned max_connections = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_CONNECTIONS,
size_t max_tries = MYSQLXX_POOL_WITH_FAILOVER_DEFAULT_MAX_TRIES);
void reset();
~PoolFactory() = default;
PoolFactory& operator=(const PoolFactory &) = delete;
private:
PoolFactory();
struct Impl;
std::unique_ptr<Impl> impl;
};
}