in src/main/java/com/spotify/logging/LoggingConfigurator.java [224:246]
public static void configureLogstashEncoderDefaults(final Level level) {
final Logger rootLogger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
final LoggerContext context = rootLogger.getLoggerContext();
context.reset();
final CustomLogstashEncoder encoder = new CustomLogstashEncoder().setupStackdriver();
encoder.setContext(context);
encoder.addProvider(new ArgumentsJsonProvider());
encoder.start();
final ConsoleAppender<ILoggingEvent> appender = new ConsoleAppender<>();
appender.setTarget("System.out");
appender.setName("stdout");
appender.setEncoder(encoder);
appender.setContext(context);
appender.start();
rootLogger.addAppender(appender);
rootLogger.setLevel(level.logbackLevel);
UncaughtExceptionLogger.setDefaultUncaughtExceptionHandler();
}