Logger.cc

#include "Logger.h"

namespace MyProject {

// Suppress a warning of "warning: missing initializer..."
// http://stackoverflow.com/questions/27354654/how-to-suppress-warning-missing-initializer-caused-by-boost-log-and-gcc-4-4
#pragma GCC diagnostic ignored "-Wmissing-field-initializers" // Disable
BOOST_LOG_ATTRIBUTE_KEYWORD(severity, "Severity", Logger::ESeverityLevel)
#pragma GCC diagnostic warning "-Wmissing-field-initializers" // Re-enable

Logger gLogger;

Logger::Logger(const std::string& fileName)
{
  fSink = boost::make_shared<text_sink>();
  fSink->locked_backend()->add_stream(boost::make_shared<std::ofstream>(fileName));
  logging::core::get()->add_sink(fSink);
  logging::add_common_attributes();
  InitFormat();
  SetFilterLevel(kWarning);
}

void Logger::InitFormat()
{
  static attrs::utc_clock timeStamp;
  static attrs::counter<uint64_t> recordID(1);

  logging::core::get()->add_global_attribute("UTCTimeStamp", timeStamp);
  logging::core::get()->add_global_attribute("RecordID", recordID);

  fSink->set_formatter(expr::stream
                      << expr::attr<uint64_t>("RecordID") << " "
                      << expr::format_date_time<boost::posix_time::ptime>("UTCTimeStamp", "%Y/%m/%d %H:%M:%S.%f (UTC)")
                      << " [" << expr::attr<ESeverityLevel>("Severity") << "] "
                      << expr::smessage);
}

void Logger::SetFilterLevel(ESeverityLevel level)
{
  fSink->set_filter(severity >= level);
}

} // MyProject