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383 lines (307 loc) · 9.02 KB
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//
// SessionImpl.cpp
//
// Library: Data/MySQL
// Package: MySQL
// Module: SessionImpl
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Data/MySQL/SessionImpl.h"
#include "Poco/Data/MySQL/MySQLStatementImpl.h"
#include "Poco/Data/MySQL/Utility.h"
#include "Poco/Data/Session.h"
#include "Poco/NumberParser.h"
#include "Poco/String.h"
namespace
{
std::string copyStripped(std::string::const_iterator from, std::string::const_iterator to)
{
// skip leading spaces
while ((from != to) && isspace(*from)) from++;
// skip trailing spaces
while ((from != to) && isspace(*(to - 1))) to--;
return std::string(from, to);
}
}
namespace Poco::Data::MySQL {
const std::string SessionImpl::MYSQL_READ_UNCOMMITTED = "READ UNCOMMITTED";
const std::string SessionImpl::MYSQL_READ_COMMITTED = "READ COMMITTED";
const std::string SessionImpl::MYSQL_REPEATABLE_READ = "REPEATABLE READ";
const std::string SessionImpl::MYSQL_SERIALIZABLE = "SERIALIZABLE";
SessionImpl::SessionImpl(const std::string& connectionString, std::size_t loginTimeout) :
Poco::Data::AbstractSessionImpl<SessionImpl>(connectionString, loginTimeout),
_connector("MySQL"),
_handle(nullptr),
_reset(false),
_connected(false),
_inTransaction(false),
_failIfInnoReadOnly(false),
_lastError(0)
{
addProperty("insertId", &SessionImpl::setInsertId, &SessionImpl::getInsertId);
setProperty("handle", static_cast<MYSQL*>(_handle));
addFeature("failIfInnoReadOnly", &SessionImpl::setFailIfInnoReadOnly, &SessionImpl::getFailIfInnoReadOnly);
open();
}
void SessionImpl::setName()
{
setDBMSName("MySQL"s);
}
void SessionImpl::open(const std::string& connect)
{
if (connect != connectionString())
{
if (isConnected())
throw InvalidAccessException("Session already connected");
if (!connect.empty())
setConnectionString(connect);
}
poco_assert_dbg (!connectionString().empty());
_handle.init();
unsigned int timeout = static_cast<unsigned int>(getLoginTimeout());
_handle.options(MYSQL_OPT_CONNECT_TIMEOUT, timeout);
std::map<std::string, std::string> options;
// Default values
options["host"] = "localhost";
options["port"] = "3306";
options["user"] = "";
options["password"] = "";
options["db"] = "";
options["compress"] = "";
options["auto-reconnect"] = "";
options["secure-auth"] = "";
options["character-set"] = "utf8";
options["reset"] = "";
options["fail-readonly"] = "";
const std::string& connString = connectionString();
for (std::string::const_iterator start = connString.begin();;)
{
std::string::const_iterator finish = std::find(start, connString.end(), ';');
std::string::const_iterator middle = std::find(start, finish, '=');
if (middle == finish)
throw MySQLException("create session: bad connection string format, can not find '='");
options[copyStripped(start, middle)] = copyStripped(middle + 1, finish);
if ((finish == connString.end()) || (finish + 1 == connString.end())) break;
start = finish + 1;
}
if (options["user"].empty())
throw MySQLException("create session: specify user name");
const char * db = nullptr;
if (!options["db"].empty())
db = options["db"].c_str();
unsigned int port = 0;
if (!NumberParser::tryParseUnsigned(options["port"], port) || 0 == port || port > 65535)
throw MySQLException("create session: specify correct port (numeric in decimal notation)");
if (options["compress"] == "true")
_handle.options(MYSQL_OPT_COMPRESS);
else if (options["compress"] == "false")
;
else if (!options["compress"].empty())
throw MySQLException("create session: specify correct compress option (true or false)");
if (options["auto-reconnect"] == "true")
_handle.options(MYSQL_OPT_RECONNECT, true);
else if (options["auto-reconnect"] == "false")
_handle.options(MYSQL_OPT_RECONNECT, false);
else if (!options["auto-reconnect"].empty())
throw MySQLException("create session: specify correct auto-reconnect option (true or false)");
#ifdef MYSQL_SECURE_AUTH
if (options["secure-auth"] == "true")
_handle.options(MYSQL_SECURE_AUTH, true);
else if (options["secure-auth"] == "false")
_handle.options(MYSQL_SECURE_AUTH, false);
else if (!options["secure-auth"].empty())
throw MySQLException("create session: specify correct secure-auth option (true or false)");
#endif
if (!options["character-set"].empty())
_handle.options(MYSQL_SET_CHARSET_NAME, options["character-set"].c_str());
if (options["reset"] == "true")
_reset = true;
else if (options["reset"] == "false")
_reset = false;
else if (!options["reset"].empty())
throw MySQLException("create session: specify correct reset option (true or false)");
if (options["fail-readonly"] == "true")
_failIfInnoReadOnly = true;
else if (options["fail-readonly"] == "false")
_failIfInnoReadOnly = false;
else if (!options["fail-readonly"].empty())
throw MySQLException("create session: specify correct fail-readonly option (true or false)");
// Real connect
_handle.connect(options["host"].c_str(),
options["user"].c_str(),
options["password"].c_str(),
db,
port);
addFeature("autoCommit",
&SessionImpl::autoCommit,
&SessionImpl::isAutoCommit);
// autocommit is initially on when a session is opened
AbstractSessionImpl::setAutoCommit("", true);
setName();
_connected = true;
}
SessionImpl::~SessionImpl()
{
close();
}
Poco::Data::StatementImpl::Ptr SessionImpl::createStatementImpl()
{
return new MySQLStatementImpl(*this);
}
void SessionImpl::begin()
{
Poco::FastMutex::ScopedLock l(_mutex);
if (_inTransaction)
throw Poco::InvalidAccessException("Already in transaction.");
_handle.startTransaction();
_inTransaction = true;
}
void SessionImpl::commit()
{
_handle.commit();
_inTransaction = false;
}
void SessionImpl::rollback()
{
_handle.rollback();
_inTransaction = false;
}
void SessionImpl::autoCommit(const std::string& s, bool val)
{
if (val != getAutoCommit(s)) {
_handle.autoCommit(val);
AbstractSessionImpl::setAutoCommit(s, val);
}
}
bool SessionImpl::isAutoCommit(const std::string& s) const
{
return AbstractSessionImpl::getAutoCommit(s);
}
void SessionImpl::setTransactionIsolation(Poco::UInt32 ti)
{
std::string isolation;
switch (ti)
{
case Session::TRANSACTION_READ_UNCOMMITTED:
isolation = MYSQL_READ_UNCOMMITTED; break;
case Session::TRANSACTION_READ_COMMITTED:
isolation = MYSQL_READ_COMMITTED; break;
case Session::TRANSACTION_REPEATABLE_READ:
isolation = MYSQL_REPEATABLE_READ; break;
case Session::TRANSACTION_SERIALIZABLE:
isolation = MYSQL_SERIALIZABLE; break;
default:
throw Poco::InvalidArgumentException("setTransactionIsolation()");
}
StatementExecutor ex(_handle);
ex.prepare(Poco::format("SET SESSION TRANSACTION ISOLATION LEVEL %s", isolation));
ex.execute();
}
Poco::UInt32 SessionImpl::getTransactionIsolation() const
{
const std::string MARIADB_SERVERINFO = "MariaDB";
std::string isolation;
std::string serverInfo = Utility::serverInfo(_handle);
unsigned long version = Utility::serverVersion(_handle);
if (serverInfo.find(MARIADB_SERVERINFO) != std::string::npos) //MariaDB
{
getSetting("tx_isolation", isolation);
isolation = isolation.c_str();
}
else //MySQL
{
if (version >= 80000)
{
getSetting("transaction_isolation", isolation);
isolation = isolation.c_str();
}
else
{
getSetting("tx_isolation", isolation);
}
}
Poco::replaceInPlace(isolation, "-", " ");
if (MYSQL_READ_UNCOMMITTED == isolation)
return Session::TRANSACTION_READ_UNCOMMITTED;
else if (MYSQL_READ_COMMITTED == isolation)
return Session::TRANSACTION_READ_COMMITTED;
else if (MYSQL_REPEATABLE_READ == isolation)
return Session::TRANSACTION_REPEATABLE_READ;
else if (MYSQL_SERIALIZABLE == isolation)
return Session::TRANSACTION_SERIALIZABLE;
throw InvalidArgumentException("getTransactionIsolation()");
}
bool SessionImpl::hasTransactionIsolation(Poco::UInt32 ti) const
{
return Session::TRANSACTION_READ_UNCOMMITTED == ti ||
Session::TRANSACTION_READ_COMMITTED == ti ||
Session::TRANSACTION_REPEATABLE_READ == ti ||
Session::TRANSACTION_SERIALIZABLE == ti;
}
void SessionImpl::reset()
{
if (_connected && _reset)
{
_handle.reset();
AbstractSessionImpl::setAutoCommit("", true);
}
}
inline bool SessionImpl::isConnected() const
{
return _connected;
}
bool SessionImpl::isGood() const
{
if (_connected)
{
if (_lastError)
{
if (_failIfInnoReadOnly)
{
try
{
int ro = 0;
if (0 == getSetting("innodb_read_only", ro))
{
_lastError = 0;
return true;
}
}
catch (...)
{
}
return false;
}
else
{
if (_handle.ping())
{
_lastError = 0;
return true;
}
return false;
}
}
else return true;
}
else return false;
}
void SessionImpl::close()
{
if (_connected)
{
_handle.close();
_connected = false;
}
}
void SessionImpl::setConnectionTimeout(std::size_t timeout)
{
_handle.options(MYSQL_OPT_READ_TIMEOUT, static_cast<unsigned int>(timeout));
_handle.options(MYSQL_OPT_WRITE_TIMEOUT, static_cast<unsigned int>(timeout));
_timeout = timeout;
}
} // namespace Poco::Data::MySQL