How to use

chainHandlesThrowable

method

in

ch.qos.logback.classic.pattern.EnsureExceptionHandling

if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = null;

/**
 * This implementation checks if any of the converters in the chain handles
 * exceptions. If not, then this method adds a
 * {@link ExtendedThrowableProxyConverter} instance to the end of the chain.
 * <p>
 * This allows appenders using this layout to output exception information
 * event if the user forgets to add %ex to the pattern. Note that the
 * appenders defined in the Core package are not aware of exceptions nor
 * LoggingEvents.
 * <p>
 * If for some reason the user wishes to NOT print exceptions, then she can
 * add %nopex to the pattern.
 * 
 * 
 */
public void process(Converter<ILoggingEvent> head) {
 if(head == null) {
  // this should never happen
  throw new IllegalArgumentException("cannot process empty chain");
 }
 if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = new ExtendedThrowableProxyConverter();
  tail.setNext(exConverter);
 }
}

/**
 * This implementation checks if any of the converters in the chain handles
 * exceptions. If not, then this method adds a
 * {@link ExtendedThrowableProxyConverter} instance to the end of the chain.
 * <p>
 * This allows appenders using this layout to output exception information
 * event if the user forgets to add %ex to the pattern. Note that the
 * appenders defined in the Core package are not aware of exceptions nor
 * LoggingEvents.
 * <p>
 * If for some reason the user wishes to NOT print exceptions, then she can
 * add %nopex to the pattern.
 * 
 * 
 */
public void process(Converter<ILoggingEvent> head) {
 if(head == null) {
  // this should never happen
  throw new IllegalArgumentException("cannot process empty chain");
 }
 if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = new ExtendedThrowableProxyConverter();
  tail.setNext(exConverter);
 }
}

/**
 * This implementation checks if any of the converters in the chain handles
 * exceptions. If not, then this method adds a
 * {@link ExtendedThrowableProxyConverter} instance to the end of the chain.
 * <p>
 * This allows appenders using this layout to output exception information
 * event if the user forgets to add %ex to the pattern. Note that the
 * appenders defined in the Core package are not aware of exceptions nor
 * LoggingEvents.
 * <p>
 * If for some reason the user wishes to NOT print exceptions, then she can
 * add %nopex to the pattern.
 * 
 * 
 */
public void process(Converter<ILoggingEvent> head) {
 if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = new ExtendedThrowableProxyConverter();
  if (tail == null) {
   head = exConverter;
  } else {
   tail.setNext(exConverter);
  }
 }
}

if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = null;

if (!chainHandlesThrowable(head)) {
 Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
 Converter<ILoggingEvent> exConverter = null;

if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = null;

if (!chainHandlesThrowable(head)) {
  Converter<ILoggingEvent> tail = ConverterUtil.findTail(head);
  Converter<ILoggingEvent> exConverter = null;