blob: 92a103913268c3baf636e352092cbe6fbcda4e6d [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2018 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "logger.hpp"
#include "logging.hpp"
#include "time.hpp"
#include <cinttypes> // for PRIdLEAST64
#include <cstdlib> // for std::abs()
#include <cstring> // for std::strspn()
#include <stdio.h> // for snprintf()
namespace ndn {
namespace util {
std::ostream&
operator<<(std::ostream& os, LogLevel level)
{
switch (level) {
case LogLevel::FATAL:
return os << "FATAL";
case LogLevel::NONE:
return os << "NONE";
case LogLevel::ERROR:
return os << "ERROR";
case LogLevel::WARN:
return os << "WARN";
case LogLevel::INFO:
return os << "INFO";
case LogLevel::DEBUG:
return os << "DEBUG";
case LogLevel::TRACE:
return os << "TRACE";
case LogLevel::ALL:
return os << "ALL";
}
BOOST_THROW_EXCEPTION(std::invalid_argument("unknown log level " + to_string(static_cast<int>(level))));
}
LogLevel
parseLogLevel(const std::string& s)
{
if (s == "FATAL")
return LogLevel::FATAL;
else if (s == "NONE")
return LogLevel::NONE;
else if (s == "ERROR")
return LogLevel::ERROR;
else if (s == "WARN")
return LogLevel::WARN;
else if (s == "INFO")
return LogLevel::INFO;
else if (s == "DEBUG")
return LogLevel::DEBUG;
else if (s == "TRACE")
return LogLevel::TRACE;
else if (s == "ALL")
return LogLevel::ALL;
BOOST_THROW_EXCEPTION(std::invalid_argument("unrecognized log level '" + s + "'"));
}
/**
* \brief checks if incoming logger name meets criteria
* \param name name of logger
*/
static bool
isValidLoggerName(const std::string& name)
{
// acceptable characters for Logger name
const char* okChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789~#%_<>.-";
if (std::strspn(name.c_str(), okChars) != name.size()) {
return false;
}
if (name.empty() || name.front() == '.' || name.back() == '.') {
return false;
}
if (name.find("..") != std::string::npos) {
return false;
}
return true;
}
Logger::Logger(const std::string& name)
: m_moduleName(name)
{
if (!isValidLoggerName(name)) {
BOOST_THROW_EXCEPTION(std::invalid_argument("Logger name '" + name + "' is invalid"));
}
this->setLevel(LogLevel::NONE);
Logging::addLogger(*this);
}
namespace detail {
std::ostream&
operator<<(std::ostream& os, LoggerTimestamp)
{
using namespace ndn::time;
const auto sinceEpoch = system_clock::now().time_since_epoch();
BOOST_ASSERT(sinceEpoch.count() >= 0);
// use abs() to silence truncation warning in snprintf(), see #4365
const auto usecs = std::abs(duration_cast<microseconds>(sinceEpoch).count());
const auto usecsPerSec = microseconds::period::den;
// 10 (whole seconds) + '.' + 6 (fraction) + '\0'
char buffer[10 + 1 + 6 + 1];
BOOST_ASSERT_MSG(usecs / usecsPerSec <= 9999999999, "whole seconds cannot fit in 10 characters");
static_assert(std::is_same<microseconds::rep, int_least64_t>::value,
"PRIdLEAST64 is incompatible with microseconds::rep");
// std::snprintf unavailable on some platforms, see #2299
::snprintf(buffer, sizeof(buffer), "%" PRIdLEAST64 ".%06" PRIdLEAST64,
usecs / usecsPerSec, usecs % usecsPerSec);
return os << buffer;
}
} // namespace detail
} // namespace util
} // namespace ndn