Java 类ch.qos.logback.core.net.SyslogAppenderBase 实例源码

public void start() {
  int errorCount = 0;

  String facilityStr = getFirstOption();
  if (facilityStr == null) {
    addError("was expecting a facility string as an option");
    return;
  }

  facility = SyslogAppenderBase.facilityStringToint(facilityStr);

  localHostName = getLocalHostname();
  try {
    // hours should be in 0-23, see also http://jira.qos.ch/browse/LBCLASSIC-48
    simpleMonthFormat = new SimpleDateFormat("MMM", Locale.US);
    simpleTimeFormat = new SimpleDateFormat("HH:mm:ss", Locale.US);
  } catch (IllegalArgumentException e) {
    addError("Could not instantiate SimpleDateFormat", e);
    errorCount++;
  }

  if(errorCount == 0) {
    super.start();
  }
}

public void start() {
    int errorCount = 0;

    final String facilityStr = getFirstOption();
    if (facilityStr == null) {
        addError("was expecting a facility string as an option");
        return;
    }

    facility = SyslogAppenderBase.facilityStringToint(facilityStr);

    localHostName = getLocalHostname();
    try {
        isoFormatter = new DateTimeFormatterBuilder()
            .appendPattern("yyyy-MM-dd'T'HH:mm:ss.SSS")
            .appendTimeZoneOffset("Z", true, 2, 4)
            .toFormatter();

    } catch (Exception e) {
        addError("Could not instantiate Joda DateTimeFormatter", e);
        errorCount++;
    }

    if (errorCount == 0) {
        super.start();
    }
}

private OutputStream getSyslogOutputStream() {
    Field f;
    try {
        f = SyslogAppenderBase.class.getDeclaredField("sos");
        f.setAccessible(true);
        return (OutputStream) f.get(this);
    } catch (ReflectiveOperationException e) {
        throw Throwables.propagate(e);
    }
}

public void start() {
  int errorCount = 0;

  final String facilityStr = getFirstOption();
  if (facilityStr == null) {
    addError("was expecting a facility string as an option");
    return;
  }

  facility = SyslogAppenderBase.facilityStringToint(facilityStr);

  localHostName = Optional.fromNullable(getContext().getProperty("hostname"))
      .or(getLocalHostname());

  try {
    // ASL doesn't handle milliseconds.
    if (os.equals("Mac OS X")) {
      simpleFormat = new SimpleDateFormat("MMM dd HH:mm:ss", new DateFormatSymbols(Locale.US));
    } else {
      simpleFormat = new SimpleDateFormat("MMM dd HH:mm:ss.SSS", new DateFormatSymbols(Locale.US));
    }
  } catch (IllegalArgumentException e) {
    addError("Could not instantiate SimpleDateFormat", e);
    errorCount++;
  }

  if (errorCount == 0) {
    super.start();
  }
}

private OutputStream getSyslogOutputStream() {
  Field f;
  try {
    f = SyslogAppenderBase.class.getDeclaredField("sos");
    f.setAccessible(true);
    return (OutputStream) f.get(this);
  } catch (ReflectiveOperationException e) {
    throw Throwables.propagate(e);
  }
}

@Activate
@SuppressWarnings("squid:S1149")
protected void activate(ComponentContext ctx) {
    final Dictionary<?, ?> properties = ctx.getProperties();
    final String[] loggers = PropertiesUtil.toStringArray(properties.get(PROP_LOGGERS), new String[] {ROOT});
    final String suffixPattern = PropertiesUtil
            .toString(properties.get(PROP_SUFFIX_PATTERN), DEFAULT_SUFFIX_PATTERN);
    final int port = PropertiesUtil.toInteger(properties.get(PROP_PORT), DEFAULT_PORT);
    final String host = PropertiesUtil.toString(properties.get(PROP_HOST), null);
    final String facility = PropertiesUtil.toString(properties.get(PROP_FACILITY), DEFAULT_FACILITY);
    final String stackTracePattern = PropertiesUtil.toString(properties.get(PROP_STACK_TRACE_PATTERN), null);
    final boolean throwableExcluded = PropertiesUtil.toBoolean(properties.get(PROP_THROWABLE_EXCLUDED), DEFAULT_THROWABLE_EXCLUDED);

    if (host == null || port == -1) {
        throw new IllegalArgumentException(
                "Syslog Appender not configured correctly. Both host and port need to be provided.");
    }

    // throws a descriptive IllegalArgumentException if facility is not valid.
    SyslogAppenderBase.facilityStringToint(facility);

    final BundleContext bundleContext = ctx.getBundleContext();

    appender = new ch.qos.logback.classic.net.SyslogAppender();

    appender.setSyslogHost(host);
    appender.setPort(port);

    appender.setFacility(facility);
    appender.setSuffixPattern(suffixPattern);

    if (StringUtils.isNotEmpty(stackTracePattern)) {
        appender.setStackTracePattern(stackTracePattern);
    }

    appender.setThrowableExcluded(throwableExcluded);

    Dictionary<String, Object> props = new Hashtable<String, Object>();
    props.put("loggers", loggers);
    appenderRegistration = bundleContext.registerService(Appender.class.getName(), appender, props);
}