cpp-logger/src/loggers/console_appender.cxx

//
//  console_logger.cxx
//  logging
//
//  Created by Sam Jaffe on 4/1/19.
//

#include <iostream>

#include "expect/expect.hpp"
#include "resource_factory/prototype_factory.hpp"

#include "logger/detail/appender.h"
#include "logger/log_manager.h"
#include "logger/properties.h"

using namespace logging;

class console_appender : public appender {
public:
  static std::shared_ptr<appender> create(properties const& props);
  
  explicit console_appender(std::ostream& os);
  
  void write(std::string const & msg) override;
  
  void flush() override;
private:
  std::ostream& out_;
};

std::shared_ptr<appender> console_appender::create(properties const& props) {
  const std::string target = props["target"];
  if (target == "SYSTEM_OUT") {
    return std::make_shared<console_appender>(std::cout);
  } else if (target == "SYSTEM_ERR") {
    return std::make_shared<console_appender>(std::cerr);
  } else {
    throw std::logic_error{target + " is not a valid console"};
  }
}

console_appender::console_appender(std::ostream& os) : out_(os) {}

void console_appender::write(std::string const & msg) {
  out_ << msg;
}

void console_appender::flush() {
  out_.flush();
}

namespace {
  bool _ = appenders::instance().bind("Console", console_appender::create);
}