blob: 06948c17a8d6522253211ec0943648a985f36f84 [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2017 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 "logging.hpp"
#include "logger.hpp"
#include <boost/log/expressions.hpp>
#include <boost/range/adaptor/map.hpp>
#include <boost/range/algorithm/copy.hpp>
#include <cstdlib>
#include <iostream>
#include <sstream>
// suppress warning caused by <boost/log/sinks/text_ostream_backend.hpp>
#ifdef __clang__
#pragma clang diagnostic ignored "-Wundefined-func-template"
#endif
namespace ndn {
namespace util {
static const LogLevel INITIAL_DEFAULT_LEVEL = LogLevel::NONE;
Logging&
Logging::get()
{
// Initialization of block-scope variables with static storage duration is thread-safe.
// See ISO C++ standard [stmt.dcl]/4
static Logging instance;
return instance;
}
Logging::Logging()
{
this->setDestinationImpl(shared_ptr<std::ostream>(&std::clog, bind([]{})));
const char* environ = std::getenv("NDN_LOG");
if (environ != nullptr) {
this->setLevelImpl(environ);
}
}
void
Logging::addLoggerImpl(Logger& logger)
{
std::lock_guard<std::mutex> lock(m_mutex);
const std::string& moduleName = logger.getModuleName();
m_loggers.insert({moduleName, &logger});
auto levelIt = m_enabledLevel.find(moduleName);
if (levelIt == m_enabledLevel.end()) {
levelIt = m_enabledLevel.find("*");
}
LogLevel level = levelIt == m_enabledLevel.end() ? INITIAL_DEFAULT_LEVEL : levelIt->second;
logger.setLevel(level);
}
std::set<std::string>
Logging::getLoggerNamesImpl()
{
std::lock_guard<std::mutex> lock(m_mutex);
std::set<std::string> loggerNames;
boost::copy(m_loggers | boost::adaptors::map_keys, std::inserter(loggerNames, loggerNames.end()));
return loggerNames;
}
#ifdef NDN_CXX_HAVE_TESTS
bool
Logging::removeLogger(Logger& logger)
{
const std::string& moduleName = logger.getModuleName();
auto range = m_loggers.equal_range(moduleName);
for (auto i = range.first; i != range.second; ++i) {
if (i->second == &logger) {
m_loggers.erase(i);
return true;
}
}
return false;
}
#endif // NDN_CXX_HAVE_TESTS
void
Logging::setLevelImpl(const std::string& moduleName, LogLevel level)
{
std::lock_guard<std::mutex> lock(m_mutex);
if (moduleName == "*") {
this->setDefaultLevel(level);
return;
}
m_enabledLevel[moduleName] = level;
auto range = m_loggers.equal_range(moduleName);
for (auto i = range.first; i != range.second; ++i) {
i->second->setLevel(level);
}
}
void
Logging::setDefaultLevel(LogLevel level)
{
m_enabledLevel.clear();
m_enabledLevel["*"] = level;
for (auto i = m_loggers.begin(); i != m_loggers.end(); ++i) {
i->second->setLevel(level);
}
}
void
Logging::setLevelImpl(const std::string& config)
{
std::stringstream ss(config);
std::string configModule;
while (std::getline(ss, configModule, ':')) {
size_t ind = configModule.find('=');
if (ind == std::string::npos) {
BOOST_THROW_EXCEPTION(std::invalid_argument("malformed logging config: '=' is missing"));
}
std::string moduleName = configModule.substr(0, ind);
LogLevel level = parseLogLevel(configModule.substr(ind+1));
this->setLevelImpl(moduleName, level);
}
}
#ifdef NDN_CXX_HAVE_TESTS
std::string
Logging::getLevels() const
{
std::ostringstream os;
auto defaultLevelIt = m_enabledLevel.find("*");
if (defaultLevelIt != m_enabledLevel.end()) {
os << "*=" << defaultLevelIt->second << ':';
}
for (auto it = m_enabledLevel.begin(); it != m_enabledLevel.end(); ++it) {
if (it->first == "*") {
continue;
}
os << it->first << '=' << it->second << ':';
}
std::string s = os.str();
if (!s.empty()) {
s.pop_back(); // delete last ':'
}
return s;
}
#endif // NDN_CXX_HAVE_TESTS
#ifdef NDN_CXX_HAVE_TESTS
void
Logging::resetLevels()
{
this->setDefaultLevel(INITIAL_DEFAULT_LEVEL);
m_enabledLevel.clear();
}
#endif // NDN_CXX_HAVE_TESTS
void
Logging::setDestination(std::ostream& os)
{
setDestination(shared_ptr<std::ostream>(&os, bind([]{})));
}
void
Logging::setDestinationImpl(shared_ptr<std::ostream> os)
{
std::lock_guard<std::mutex> lock(m_mutex);
m_destination = os;
auto backend = boost::make_shared<boost::log::sinks::text_ostream_backend>();
backend->auto_flush(true);
backend->add_stream(boost::shared_ptr<std::ostream>(os.get(), bind([]{})));
if (m_sink != nullptr) {
boost::log::core::get()->remove_sink(m_sink);
m_sink->flush();
m_sink.reset();
}
m_sink = boost::make_shared<Sink>(backend);
m_sink->set_formatter(boost::log::expressions::stream << boost::log::expressions::message);
boost::log::core::get()->add_sink(m_sink);
}
#ifdef NDN_CXX_HAVE_TESTS
shared_ptr<std::ostream>
Logging::getDestination()
{
return m_destination;
}
#endif // NDN_CXX_HAVE_TESTS
void
Logging::flushImpl()
{
m_sink->flush();
}
} // namespace util
} // namespace ndn