monero/src/common/scoped_message_writer.h
moneromooo-monero 58f3fc68e4
Make msgwriter logs go to file only
This was the case for monero-wallet-cli already, but not for
monerod, which was making it pretty spammy as it was duplicating
intended output. Since my original intent was to ensure logs
included command output for debugging, this achieves both.
2017-07-24 10:34:47 +01:00

127 lines
4.0 KiB
C++

// Copyright (c) 2014-2017, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#pragma once
#include "misc_log_ex.h"
#include <iostream>
namespace tools
{
/************************************************************************/
/* */
/************************************************************************/
class scoped_message_writer
{
private:
bool m_flush;
std::stringstream m_oss;
epee::console_colors m_color;
bool m_bright;
el::Level m_log_level;
public:
scoped_message_writer(
epee::console_colors color = epee::console_color_default
, bool bright = false
, std::string&& prefix = std::string()
, el::Level log_level = el::Level::Info
)
: m_flush(true)
, m_color(color)
, m_bright(bright)
, m_log_level(log_level)
{
m_oss << prefix;
}
scoped_message_writer(scoped_message_writer&& rhs)
: m_flush(std::move(rhs.m_flush))
#if defined(_MSC_VER)
, m_oss(std::move(rhs.m_oss))
#else
// GCC bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54316
, m_oss(rhs.m_oss.str(), std::ios_base::out | std::ios_base::ate)
#endif
, m_color(std::move(rhs.m_color))
, m_log_level(std::move(rhs.m_log_level))
{
rhs.m_flush = false;
}
scoped_message_writer(scoped_message_writer& rhs) = delete;
scoped_message_writer& operator=(scoped_message_writer& rhs) = delete;
scoped_message_writer& operator=(scoped_message_writer&& rhs) = delete;
template<typename T>
std::ostream& operator<<(const T& val)
{
m_oss << val;
return m_oss;
}
~scoped_message_writer()
{
if (m_flush)
{
m_flush = false;
MCLOG_FILE(m_log_level, "msgwriter", m_oss.str());
if (epee::console_color_default == m_color)
{
std::cout << m_oss.str();
}
else
{
set_console_color(m_color, m_bright);
std::cout << m_oss.str();
epee::reset_console_color();
}
std::cout << std::endl;
}
}
};
inline scoped_message_writer success_msg_writer()
{
return scoped_message_writer(epee::console_color_green, false, std::string(), el::Level::Info);
}
inline scoped_message_writer msg_writer(epee::console_colors color = epee::console_color_default)
{
return scoped_message_writer(color, false, std::string(), el::Level::Info);
}
inline scoped_message_writer fail_msg_writer()
{
return scoped_message_writer(epee::console_color_red, true, "Error: ", el::Level::Error);
}
} // namespace tools