mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-06 07:32:27 +00:00
4bcaed98d8
* Support for MYSQL_OPT_RECONNECT option It can now be controlled by .opt_reconnect = {true|false} parameter in the mysql replica config section
161 lines
4.2 KiB
C++
161 lines
4.2 KiB
C++
#if __has_include(<mysql.h>)
|
|
#include <mysql.h>
|
|
#else
|
|
#include <mysql/mysql.h>
|
|
#endif
|
|
|
|
#include <mysqlxx/Connection.h>
|
|
#include <mysqlxx/Exception.h>
|
|
|
|
static inline const char* ifNotEmpty(const char* s)
|
|
{
|
|
return s && *s ? s : nullptr;
|
|
}
|
|
|
|
namespace mysqlxx
|
|
{
|
|
|
|
LibrarySingleton::LibrarySingleton()
|
|
{
|
|
if (mysql_library_init(0, nullptr, nullptr))
|
|
throw Exception("Cannot initialize MySQL library.");
|
|
}
|
|
|
|
LibrarySingleton::~LibrarySingleton()
|
|
{
|
|
mysql_library_end();
|
|
}
|
|
|
|
auto & LibrarySingleton::instance()
|
|
{
|
|
static LibrarySingleton instance;
|
|
return instance;
|
|
}
|
|
|
|
Connection::Connection()
|
|
: driver(std::make_unique<MYSQL>())
|
|
{
|
|
/// MySQL library initialization.
|
|
LibrarySingleton::instance();
|
|
}
|
|
|
|
Connection::Connection(
|
|
const char* db,
|
|
const char* server,
|
|
const char* user,
|
|
const char* password,
|
|
unsigned port,
|
|
const char * socket,
|
|
const char* ssl_ca,
|
|
const char* ssl_cert,
|
|
const char* ssl_key,
|
|
unsigned timeout,
|
|
unsigned rw_timeout,
|
|
bool enable_local_infile,
|
|
bool opt_reconnect)
|
|
: Connection()
|
|
{
|
|
connect(db, server, user, password, port, socket, ssl_ca, ssl_cert, ssl_key, timeout, rw_timeout, enable_local_infile, opt_reconnect);
|
|
}
|
|
|
|
Connection::Connection(const std::string & config_name)
|
|
: Connection()
|
|
{
|
|
connect(config_name);
|
|
}
|
|
|
|
Connection::~Connection()
|
|
{
|
|
disconnect();
|
|
mysql_thread_end();
|
|
}
|
|
|
|
void Connection::connect(const char* db,
|
|
const char * server,
|
|
const char * user,
|
|
const char * password,
|
|
unsigned port,
|
|
const char * socket,
|
|
const char * ssl_ca,
|
|
const char * ssl_cert,
|
|
const char * ssl_key,
|
|
unsigned timeout,
|
|
unsigned rw_timeout,
|
|
bool enable_local_infile,
|
|
bool opt_reconnect)
|
|
{
|
|
if (is_connected)
|
|
disconnect();
|
|
|
|
if (!mysql_init(driver.get()))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
is_initialized = true;
|
|
|
|
/// Set timeouts.
|
|
if (mysql_options(driver.get(), MYSQL_OPT_CONNECT_TIMEOUT, &timeout))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
if (mysql_options(driver.get(), MYSQL_OPT_READ_TIMEOUT, &rw_timeout))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
if (mysql_options(driver.get(), MYSQL_OPT_WRITE_TIMEOUT, &rw_timeout))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
/// Disable LOAD DATA LOCAL INFILE because it is insecure if necessary.
|
|
unsigned enable_local_infile_arg = static_cast<unsigned>(enable_local_infile);
|
|
if (mysql_options(driver.get(), MYSQL_OPT_LOCAL_INFILE, &enable_local_infile_arg))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
/// See C API Developer Guide: Automatic Reconnection Control
|
|
if (mysql_options(driver.get(), MYSQL_OPT_RECONNECT, reinterpret_cast<const char *>(&opt_reconnect)))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
/// Specifies particular ssl key and certificate if it needs
|
|
if (mysql_ssl_set(driver.get(), ifNotEmpty(ssl_key), ifNotEmpty(ssl_cert), ifNotEmpty(ssl_ca), nullptr, nullptr))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
if (!mysql_real_connect(driver.get(), server, user, password, db, port, ifNotEmpty(socket), driver->client_flag))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
/// Sets UTF-8 as default encoding. See https://mariadb.com/kb/en/mysql_set_character_set/
|
|
if (mysql_set_character_set(driver.get(), "utf8mb4"))
|
|
throw ConnectionFailed(errorMessage(driver.get()), mysql_errno(driver.get()));
|
|
|
|
is_connected = true;
|
|
}
|
|
|
|
bool Connection::connected() const
|
|
{
|
|
return is_connected;
|
|
}
|
|
|
|
void Connection::disconnect()
|
|
{
|
|
if (!is_initialized)
|
|
return;
|
|
|
|
mysql_close(driver.get());
|
|
memset(driver.get(), 0, sizeof(*driver));
|
|
|
|
is_initialized = false;
|
|
is_connected = false;
|
|
}
|
|
|
|
bool Connection::ping()
|
|
{
|
|
return is_connected && !mysql_ping(driver.get());
|
|
}
|
|
|
|
Query Connection::query(const std::string & str)
|
|
{
|
|
return Query(this, str);
|
|
}
|
|
|
|
MYSQL * Connection::getDriver()
|
|
{
|
|
return driver.get();
|
|
}
|
|
|
|
}
|
|
|