Niclas Antti f62d155036 MXS-173 Test for throttling filter
The test may fail if the client/maxscale/mariadb combo is too slow.
TODO, maybe: today I saw mysql_query() hang (in a poll) when maxscale
disconnected. Is there something that can be done about that?
I added a source directory, base, for stuff that should become part of a common
utility library in the future.
2018-05-25 14:51:36 +03:00

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/*
* Copyright (c) 2018 MariaDB Corporation Ab
*
* Use of this software is governed by the Business Source License included
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
*
* Change Date: 2020-01-01
*
* On the date above, in accordance with the Business Source License, use
* of this software will be governed by version 2 or later of the General
* Public License.
*/
#pragma once
#include <string>
namespace base
{
/* Environment variable. Usage:
* Env user{"USER"};
* std::string home = Env{"HOME"};
* An environment variable can be empty() but
* still is_defined().
*/
class Env : public std::string
{
public:
Env(const std::string& name) : m_is_defined(false)
{
if (const char* var = getenv(name.c_str()))
{
m_is_defined = true;
this->assign(var);
}
}
bool is_defined() const
{
return m_is_defined;
}
private:
bool m_is_defined;
};
} // base