Java Code Examples for ch.qos.logback.classic.encoder.PatternLayoutEncoder#setPattern()

public static void logToFile(String workingDir) {
    LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
    PatternLayoutEncoder ple = new PatternLayoutEncoder();

    ple.setPattern("%date %level [%thread] %logger{10} [%file:%line] %msg%n");
    ple.setContext(lc);
    ple.start();
    FileAppender<ILoggingEvent> fileAppender = new FileAppender<>();
    fileAppender.setName(JLINEUP_FILE_APPENDER);
    fileAppender.setFile(workingDir + "/jlineup.log");
    fileAppender.setEncoder(ple);
    fileAppender.setContext(lc);
    fileAppender.start();

    ch.qos.logback.classic.Logger logger = (ch.qos.logback.classic.Logger)LoggerFactory.getLogger(ch.qos.logback.classic.Logger.ROOT_LOGGER_NAME);
    logger.addAppender(fileAppender);
    logger.setLevel(Level.DEBUG);
}
 

public static void configure(KonkerLoggerContext lc) {
    StatusManager sm = lc.getStatusManager();
    if(sm != null) {
        sm.add(new InfoStatus("Setting up default configuration.", lc));
    }

    ConsoleAppender ca = new ConsoleAppender();
    ca.setContext(lc);
    ca.setName("console");
    PatternLayoutEncoder pl = new PatternLayoutEncoder();
    pl.setContext(lc);
    pl.setPattern("%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n");
    pl.start();
    ca.setEncoder(pl);
    ca.start();
    KonkerLogger rootLogger = lc.getLogger("ROOT");
    rootLogger.addAppender(ca);
}
 

@Override
public void run() {
  Logger rootLogger = (Logger) LoggerFactory.getLogger(ROOT_LOGGER_NAME);

  if (verbose) {
    ConsoleAppender<ILoggingEvent> appender = (ConsoleAppender<ILoggingEvent>) rootLogger.getAppender("STDOUT");
    PatternLayoutEncoder ple = new PatternLayoutEncoder();
    ple.setPattern("%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p %c{1}:%L - %msg%n");
    ple.setContext(appender.getContext());
    ple.start();

    appender.setEncoder(ple);
    rootLogger.setLevel(Level.TRACE);
    rootLogger.getLoggerContext().getLoggerList().forEach(logger -> logger.setLevel(Level.TRACE));
  }
}
 

@Before
public void setUp() {
	PatternLayout.defaultConverterMap.put("crlf",
			CRLFConverter.class.getName());
	// layout = new PatternLayout();

	encoder = new PatternLayoutEncoder();
	encoder.setContext(loggerContext);
	encoder.setPattern("%-4relative [%thread] %-5level %logger{35} - %crlf(%msg)%n");
	encoder.start();

	// Layout layout = new PatternLayout();
	// layout.setEncoder(encoder);

	mockAppender.setContext(loggerContext);
	mockAppender.setEncoder(encoder);
	mockAppender.start();

	LOGGER = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
	LOGGER.addAppender(mockAppender);
}
 

@SuppressWarnings("unchecked")
public static Appender<ILoggingEvent> createConsoleAppender(Level level){
    ConsoleAppender appender = new ConsoleAppender();
    LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
    appender.setContext(context);
    //这里设置级别过滤器
    LogFilter levelController = new LogFilter();
    ThresholdFilter levelFilter = levelController.getThresholdFilter(level);
    levelFilter.start();
    appender.addFilter(levelFilter);

    PatternLayoutEncoder encoder = new PatternLayoutEncoder();
    //设置上下文，每个logger都关联到logger上下文，默认上下文名称为default。
    //但可以使用<contextName>设置成其他名字，用于区分不同应用程序的记录。一旦设置，不能修改。
    encoder.setContext(context);
    //设置格式
    encoder.setPattern("%d %p [%t] - %msg%n");
    encoder.start();
    //加入下面两个节点
    appender.setEncoder(encoder);
    appender.start();
    return appender;
}
 

public ContainerLogger(final Path logDirectory, final String container) {

        final LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
        final PatternLayoutEncoder encoder = new PatternLayoutEncoder();

        encoder.setPattern("%d{HH:mm:ss.SSS} %-5level %logger{36}.%M - %msg%n");
        encoder.setContext(context);
        encoder.start();

        final FileAppender<ILoggingEvent> fileAppender = new FileAppender<>();
        fileAppender.setFile(logDirectory.resolve(container).toAbsolutePath().toString());
        fileAppender.setEncoder(encoder);
        fileAppender.setContext(context);
        fileAppender.start();

        final ch.qos.logback.classic.Logger logger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(container);
        logger.addAppender(fileAppender);
        logger.setLevel(Level.DEBUG);
        logger.setAdditive(false);

        this.delegate = logger;
    }
 

protected Appender buildAppender(String name, String fileName, String pattern) {
    RollingFileAppender appender = new RollingFileAppender();
    appender.setContext(loggerContext);
    appender.setName(name);
    appender.setAppend(true);
    appender.setFile(new File(getLogPath(), fileName).getAbsolutePath());

    TimeBasedRollingPolicy rolling = new TimeBasedRollingPolicy();
    rolling.setContext(loggerContext);
    rolling.setParent(appender);
    rolling.setFileNamePattern(new File(getLogPath(), fileName).getAbsolutePath() + ".%d{yyyy-MM-dd}");
    rolling.start();
    appender.setRollingPolicy(rolling);

    PatternLayoutEncoder layout = new PatternLayoutEncoder();
    layout.setContext(loggerContext);
    layout.setPattern(pattern);
    layout.setCharset(Charset.forName(getEncoding()));
    layout.start();
    appender.setEncoder(layout);
    // 启动
    appender.start();
    return appender;
}
 

public void logToConsole()
{
    Context context = getContext();
    ConsoleAppender<ILoggingEvent> consoleAppender = new ConsoleAppender<>();
    consoleAppender.setContext(context);
    PatternLayoutEncoder patternLayoutEncoder = new PatternLayoutEncoder();
    patternLayoutEncoder.setContext(context);

    // added MDC variable 'qpid.log.prefix' for test purposes
    patternLayoutEncoder.setPattern("%X{qpid.log.prefix}%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n");
    patternLayoutEncoder.start();

    consoleAppender.addFilter(new Filter<ILoggingEvent>()
    {
        @Override
        public FilterReply decide(final ILoggingEvent event)
        {
            return event.getLevel().isGreaterOrEqual(_consoleAppenderAcceptLogLevel) ? FilterReply.ACCEPT : FilterReply.DENY;
        }
    });

    consoleAppender.setEncoder(patternLayoutEncoder);
    consoleAppender.start();
    replayAccumulatedEvents(consoleAppender);
    consoleAppender.stop();
}
 

/**
 * Initializer logback
 *
 * @param file       log file
 * @param level      log level
 * @param maxHistory max history
 */
private void doInitializer(String file, String level, int maxHistory) {
    LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
    Logger rootLogger = loggerContext.getLogger(Logger.ROOT_LOGGER_NAME);
    rootLogger.detachAndStopAllAppenders();

    // appender
    RollingFileAppender<ILoggingEvent> fileAppender = new RollingFileAppender<>();
    fileAppender.setContext(loggerContext);
    fileAppender.setName("application");
    fileAppender.setFile(file);
    fileAppender.setAppend(true);

    // policy
    TimeBasedRollingPolicy<ILoggingEvent> policy = new TimeBasedRollingPolicy<>();
    policy.setContext(loggerContext);
    policy.setMaxHistory(maxHistory);
    policy.setFileNamePattern(file + ".%d{yyyy-MM-dd}");
    policy.setParent(fileAppender);
    policy.start();
    fileAppender.setRollingPolicy(policy);

    // encoder
    PatternLayoutEncoder encoder = new PatternLayoutEncoder();
    encoder.setContext(loggerContext);
    encoder.setPattern("%date [%thread] %-5level %logger (%file:%line\\) - %msg%n");
    encoder.start();
    fileAppender.setEncoder(encoder);

    fileAppender.start();

    rootLogger.addAppender(fileAppender);
    rootLogger.setLevel(Level.toLevel(level));
    rootLogger.setAdditive(false);
}
 

public FileAppender<ILoggingEvent> buildFileAppender(
  LoggerContext context,
  String file
) {
  FileAppender<ILoggingEvent> fileAppender = new FileAppender<>();
  fileAppender.setFile(file);
  fileAppender.setContext(context);
  fileAppender.setPrudent(true);

  PatternLayoutEncoder encoder = new PatternLayoutEncoder();
  encoder.setContext(context);
  encoder.setPattern(
    primaryConfiguration
      .getLoggingPattern()
      .orElse(
        baseConfiguration.getLoggingPattern().isPresent()
          ? baseConfiguration.getLoggingPattern().get()
          : JavaUtils.LOGBACK_LOGGING_PATTERN
      )
  );
  encoder.start();

  fileAppender.setEncoder(encoder);
  fileAppender.start();

  return fileAppender;
}
 

/**
 * Initializer logback
 * 
 * @param file
 * @param level
 * @param maxHistory
 */
private void doInitializer(String file, String level, int maxHistory) {
	LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
	Logger rootLogger = loggerContext.getLogger(Logger.ROOT_LOGGER_NAME);
	rootLogger.detachAndStopAllAppenders();

	// appender
	RollingFileAppender<ILoggingEvent> fileAppender = new RollingFileAppender<ILoggingEvent>();
	fileAppender.setContext(loggerContext);
	fileAppender.setName("application");
	fileAppender.setFile(file);
	fileAppender.setAppend(true);

	// policy
	TimeBasedRollingPolicy<ILoggingEvent> policy = new TimeBasedRollingPolicy<ILoggingEvent>();
	policy.setContext(loggerContext);
	policy.setMaxHistory(maxHistory);
	policy.setFileNamePattern(file + ".%d{yyyy-MM-dd}");
	policy.setParent(fileAppender);
	policy.start();
	fileAppender.setRollingPolicy(policy);

	// encoder
	PatternLayoutEncoder encoder = new PatternLayoutEncoder();
	encoder.setContext(loggerContext);
	encoder.setPattern("%date [%thread] %-5level %logger (%file:%line\\) - %msg%n");
	encoder.start();
	fileAppender.setEncoder(encoder);
	
	fileAppender.start();

	rootLogger.addAppender(fileAppender);
	rootLogger.setLevel(Level.toLevel(level));
	rootLogger.setAdditive(false);
}
 

/**
 * 创建Account Logger
 * @param separateLogger true 会为每个Account创建一个日志文件: TRADER_HOME/work/<TRADING_DAY>/accountId.log
 */
private void createAccountLogger() {
    if ( !simMode ) {
        LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

        FileAppender fileAppender = new FileAppender();
        fileAppender.setContext(loggerContext);
        fileAppender.setName("timestamp");
        // set the file name
        File logFile = new File(tradingWorkDir, id+".log");
        fileAppender.setFile(logFile.getAbsolutePath());

        PatternLayoutEncoder encoder = new PatternLayoutEncoder();
        encoder.setContext(loggerContext);
        encoder.setPattern("%d [%thread] %-5level %logger{35} - %msg %n");
        encoder.start();

        fileAppender.setEncoder(encoder);
        fileAppender.start();

        // attach the rolling file appender to the logger of your choice
        loggerCategory = AccountImpl.class.getName()+"."+id;
        ch.qos.logback.classic.Logger packageLogger = loggerContext.getLogger(loggerCategory);
        packageLogger.addAppender(fileAppender);
        packageLogger.setAdditive(true); //保证每个Account数据, 在主的日志中也有一份

        logger = loggerContext.getLogger(loggerCategory+"."+AccountImpl.class.getSimpleName());
    } else {
        loggerCategory = AccountImpl.class.getName();
        logger = LoggerFactory.getLogger(AccountImpl.class);
    }
}
 

@Override
public void run(JCommander jc) {
    String endpoint = getScheme() + "://" + getHost() + ":" + getPort() + "/api/env";

    if (getBashable()) {
        ch.qos.logback.classic.Logger root =
                (ch.qos.logback.classic.Logger) org.slf4j.LoggerFactory.getLogger(ch.qos.logback.classic.Logger.ROOT_LOGGER_NAME);
        root.detachAndStopAllAppenders();
        setup();
        LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
        PatternLayoutEncoder ple = new PatternLayoutEncoder();

        ple.setPattern("%msg%n");
        ple.setContext(lc);
        ple.start();

        ConsoleAppender<ILoggingEvent> consoleAppender = new ConsoleAppender<>();
        consoleAppender.setEncoder(ple);
        consoleAppender.setContext(lc);
        consoleAppender.start();

        root.addAppender(consoleAppender);
        root.setLevel(Level.INFO);
        root.setAdditive(false);

        // still gotta hide org.eclipse.jetty.util.log INFO
        ch.qos.logback.classic.Logger jettyUtilLogger = lc.getLogger("org.eclipse.jetty.util.log");
        jettyUtilLogger.setLevel(Level.WARN);

        // also add .sh to the endpoint
        endpoint = endpoint + ".sh";
        LOG.info("# generated from env command at {}", endpoint);
    } else {
        setup(); // go ahead an log it
    }
    EmissaryClient client = new EmissaryClient();
    LOG.info(client.send(new HttpGet(endpoint)).getContentString());
}
 

private Appender<ILoggingEvent> consoleAppender(LogbackConfigurator config) {
	ConsoleAppender<ILoggingEvent> appender = new ConsoleAppender<ILoggingEvent>();
	PatternLayoutEncoder encoder = new PatternLayoutEncoder();
	String logPattern = this.logging.getProperty("pattern.console", CONSOLE_LOG_PATTERN);
	encoder.setPattern(OptionHelper.substVars(logPattern, config.getContext()));
	encoder.setCharset(UTF8);
	config.start(encoder);
	appender.setEncoder(encoder);
	config.appender("CONSOLE", appender);
	return appender;
}
 

private Appender<ILoggingEvent> fileAppender(LogbackConfigurator config, String logFile) {
	RollingFileAppender<ILoggingEvent> appender = new RollingFileAppender<ILoggingEvent>();
	PatternLayoutEncoder encoder = new PatternLayoutEncoder();
	String logPattern = this.logging.getProperty("pattern.file", FILE_LOG_PATTERN);
	encoder.setPattern(OptionHelper.substVars(logPattern, config.getContext()));
	appender.setEncoder(encoder);
	config.start(encoder);
	appender.setFile(logFile);
	setRollingPolicy(appender, config, logFile);
	setMaxFileSize(appender, config);
	config.appender("FILE", appender);
	return appender;
}
 

@BeforeClass
public void logger() {

    Logger rootLogger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
    LoggerContext loggerContext = rootLogger.getLoggerContext();
    loggerContext.reset();

    if (verbose) {

        PatternLayoutEncoder encoder = new PatternLayoutEncoder();
        encoder.setContext(loggerContext);
        encoder.setPattern("[%thread]: %message%n");
        encoder.start();

        ConsoleAppender<ILoggingEvent> appender = new ConsoleAppender<>();
        appender.setContext(loggerContext);
        appender.setEncoder(encoder);
        appender.start();

        rootLogger.addAppender(appender);

        ((Logger) LoggerFactory.getLogger("com.jivesoftware.os.tasmo")).setLevel(Level.TRACE);
        ((Logger) LoggerFactory.getLogger("com.jivesoftware.os.tasmo.lib.concur.ConcurrencyAndExistanceCommitChange")).setLevel(Level.TRACE);
        ((Logger) LoggerFactory.getLogger("com.jivesoftware.os.tasmo.reference.lib.ReferenceStore")).setLevel(Level.TRACE);
        ((Logger) LoggerFactory.getLogger("com.jivesoftware.os.tasmo.view.reader.service.writer.WriteToViewValueStore")).setLevel(Level.TRACE);
    } else {

        rootLogger.setLevel(Level.OFF);
    }
}
 

@Before
public void beforeLogSystemInit() throws IOException, InterruptedException {

    kafka = TestKafka.createTestKafka(1,1,1);

    loggerContext = new LoggerContext();
    loggerContext.putProperty("brokers.list", kafka.getBrokerList());
    loggerContext.getStatusManager().add(new StatusListener() {
        @Override
        public void addStatusEvent(Status status) {
            if (status.getEffectiveLevel() > Status.INFO) {
                System.err.println(status.toString());
                if (status.getThrowable() != null) {
                    collector.addError(status.getThrowable());
                } else {
                    collector.addError(new RuntimeException("StatusManager reported warning: "+status.toString()));
                }
            } else {
                System.out.println(status.toString());
            }
        }
    });
    loggerContext.putProperty("HOSTNAME","localhost");

    unit = new KafkaAppender<>();
    final PatternLayoutEncoder patternLayoutEncoder = new PatternLayoutEncoder();
    patternLayoutEncoder.setPattern("%msg");
    patternLayoutEncoder.setContext(loggerContext);
    patternLayoutEncoder.setCharset(Charset.forName("UTF-8"));
    patternLayoutEncoder.start();
    unit.setEncoder(patternLayoutEncoder);
    unit.setTopic("logs");
    unit.setName("TestKafkaAppender");
    unit.setContext(loggerContext);
    unit.setKeyingStrategy(new NoKeyKeyingStrategy());
    unit.setDeliveryStrategy(new AsynchronousDeliveryStrategy());
    unit.addAppender(fallbackAppender);
    unit.addProducerConfigValue(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafka.getBrokerList());
    unit.addProducerConfigValue(ProducerConfig.ACKS_CONFIG, "1");
    unit.addProducerConfigValue(ProducerConfig.MAX_BLOCK_MS_CONFIG, "2000");
    unit.addProducerConfigValue(ProducerConfig.LINGER_MS_CONFIG, "100");
    unit.setPartition(0);
    unit.setDeliveryStrategy(new AsynchronousDeliveryStrategy());
    unit.addAppender(new AppenderBase<ILoggingEvent>() {
        @Override
        protected void append(ILoggingEvent eventObject) {
            fallbackLoggingEvents.add(eventObject);
        }
    });
}
 

private static List<Appender<ILoggingEvent>> constructAppenders(
        boolean shouldLogToFile, String _logDirectory) {
    List<Appender<ILoggingEvent>> appenders = new ArrayList<>();

    String logDirectory = DEFAULT_LOG_DIR;
    if (_logDirectory != null && !_logDirectory.trim().isEmpty()) logDirectory = _logDirectory;

    PatternLayoutEncoder encoder = new PatternLayoutEncoder();
    encoder.setContext(context);
    encoder.setPattern(DEFAULT_LOG_PATTERN);
    encoder.start();

    ConsoleAppender<ILoggingEvent> consoleSync = new ConsoleAppender<>();
    consoleSync.setContext(context);
    consoleSync.setName("consoleSyncAppender"); // for logger debugging
    consoleSync.setEncoder(encoder);
    consoleSync.start();

    AsyncAppender consoleAsync = new AsyncAppender();
    consoleAsync.setContext(context);
    consoleAsync.setName("consoleAsyncAppender"); // for logger debugging
    consoleAsync.addAppender(consoleSync);

    consoleAsync.setIncludeCallerData(ASYNC_LOGGER_INCLUDE_CALLER_DATA);
    consoleAsync.setNeverBlock(ASYNC_LOGGER_NEVER_BLOCK);
    consoleAsync.setMaxFlushTime(ASYNC_LOGGER_MAX_FLUSH_TIME_MS);
    consoleAsync.setDiscardingThreshold(ASYNC_LOGGER_DISCARDING_THRESHOLD);
    consoleAsync.setQueueSize(ASYNC_LOGGER_QUEUE_SIZE);
    consoleAsync.start();

    appenders.add(consoleAsync);
    if (!shouldLogToFile) return appenders;

    RollingFileAppender<ILoggingEvent> fileSync = new RollingFileAppender<>();

    SizeBasedTriggeringPolicy<ILoggingEvent> tp = new SizeBasedTriggeringPolicy<>();
    tp.setContext(context);
    tp.start();

    SizeAndTimeBasedRollingPolicy rp = new SizeAndTimeBasedRollingPolicy();
    rp.setContext(context);
    // roll-over each day
    // notice that we don't use the OS-agnostic File.separator here since logback is converts
    // the FileNamePattern
    // to a unix-style path using ch.qos.logback.core.rolling.helper.FileFilterUtil.slashify
    FileNamePattern fnp =
            new FileNamePattern(
                    logDirectory + "/%d{yyyy/MM, aux}/aion.%d{yyyy-MM-dd}.%i.log", context);
    rp.setFileNamePattern(fnp.getPattern());
    // max rollover file size = 100MB
    rp.setMaxFileSize(FileSize.valueOf("100mb"));
    rp.setParent(fileSync);
    rp.start();

    fileSync.setName("fileSyncAppender"); // for logger debugging
    fileSync.setContext(context);
    fileSync.setTriggeringPolicy(tp);
    fileSync.setRollingPolicy(rp);
    fileSync.setFile(logDirectory + File.separator + DEFAULT_LOG_FILE_CURRENT);
    fileSync.setEncoder(encoder);
    fileSync.setAppend(true);
    fileSync.start();

    AsyncAppender fileAsync = new AsyncAppender();
    fileAsync.setContext(context);
    fileAsync.setName("fileAsyncAppender"); // for logger debugging
    fileAsync.addAppender(fileSync);

    fileAsync.setIncludeCallerData(ASYNC_LOGGER_INCLUDE_CALLER_DATA);
    fileAsync.setNeverBlock(ASYNC_LOGGER_NEVER_BLOCK);
    fileAsync.setMaxFlushTime(ASYNC_LOGGER_MAX_FLUSH_TIME_MS);
    fileAsync.setDiscardingThreshold(ASYNC_LOGGER_DISCARDING_THRESHOLD);
    fileAsync.setQueueSize(ASYNC_LOGGER_QUEUE_SIZE);
    fileAsync.start();

    appenders.add(fileAsync);
    return appenders;
}
 

private void configureLogbackDirectly() {
    // reset the default context (which may already have been initialized)
    // since we want to reconfigure it
    LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
    lc.reset();

    // setup FileAppender
    PatternLayoutEncoder encoder1 = new PatternLayoutEncoder();
    encoder1.setContext(lc);
    encoder1.setPattern("%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n");
    encoder1.start();

    FileAppender<ILoggingEvent> fileAppender = new FileAppender<>();
    fileAppender.setContext(lc);
    fileAppender.setFile(this.getFileStreamPath("app.log").getAbsolutePath());
    fileAppender.setEncoder(encoder1);
    fileAppender.start();

    // setup LogcatAppender
    PatternLayoutEncoder encoder2 = new PatternLayoutEncoder();
    encoder2.setContext(lc);
    encoder2.setPattern("[%thread] %msg%n");
    encoder2.start();

    LogcatAppender logcatAppender = new LogcatAppender();
    logcatAppender.setContext(lc);
    logcatAppender.setEncoder(encoder2);
    logcatAppender.start();

    // backup the newly created appenders to the root logger;
    // qualify Logger to disambiguate from org.slf4j.Logger
    ch.qos.logback.classic.Logger root = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
    root.addAppender(fileAppender);
    root.addAppender(logcatAppender);

    if (BuildConfig.DEBUG) {
        root.setLevel(Level.ALL);
    } else {
        root.setLevel(Level.INFO);
    }
}
 

/**
 * Helper function to configure where message and CLI output is directed as well as configure logging
 * This should be called first to ensure correct output of message and cli logging into the desired stream.
 */
private void configureOutput() {
  try {
    if (flipOutput) {
      PrintStream tmp = msgout;
      msgout = cliout;
      cliout = tmp;
    }

    // change output format from json to yaml
    if (format == Format.YAML) {
      mapper = new YAMLMapper();
    }

    // retrieve the ch.qos.logback.classic.LoggerContext
    LoggerContext logCtx = (LoggerContext) org.slf4j.LoggerFactory.getILoggerFactory();

    PatternLayoutEncoder logEncoder = new PatternLayoutEncoder();
    logEncoder.setContext(logCtx);
    logEncoder.setPattern("%d{HH:mm:ss.SSS} - %-5level %logger{35} - %msg%n");
    logEncoder.start();

    OutputStreamAppender logConsoleAppender = new OutputStreamAppender();
    logConsoleAppender.setContext(logCtx);
    logConsoleAppender.setOutputStream(cliout);
    logConsoleAppender.setName("console");
    logConsoleAppender.setEncoder(logEncoder);
    logConsoleAppender.start();

    Logger rootLogger = logCtx.getLogger("root");
    rootLogger.detachAndStopAllAppenders();
    rootLogger.setLevel(Level.WARN);
    rootLogger.addAppender(logConsoleAppender);

    Logger roadLogger = logCtx.getLogger("com.hotels.road");
    roadLogger.setLevel(Level.WARN);

    Logger clientLogger = logCtx.getLogger("com.hotels.road.offramp.client");
    clientLogger.setLevel(debug ? Level.DEBUG : Level.INFO);

    Logger cliLogger = logCtx.getLogger("com.hotels.road.tool.cli");
    cliLogger.setLevel(debug ? Level.DEBUG : Level.INFO);
  } catch (Exception e) {
    System.err.println("Error configuring the message and cli output:");
    e.printStackTrace();
    System.exit(Error.OUTPUT_CONFIGURATION.code);
  }
}