abstract class Logger {
  static late Logger _logger;

  static Logger getInstance() {
    return _logger;
  }

  static void setInstance(Logger logger) {
    _logger = logger;
  }

  void info(String msg, {String tag});
  void warning(String msg, {String tag});
  void error(String msg, {String tag});
}

class LoggerConfig {
  String host;
  String serviceName;
  LoggerConfig({required this.host, required this.serviceName});
}