How to use

idToHex

method

in

org.springframework.cloud.sleuth.Span

@Override
public void inject(Span span, RpcContext carrier) {
  Map<String, String> attachments = carrier.getAttachments();
  if (span.getTraceId() != 0) {
    attachments.put(Span.TRACE_ID_NAME, Span.idToHex(span.getTraceId()));
  }
  if (span.getSpanId() != 0) {
    attachments.put(Span.SPAN_ID_NAME, Span.idToHex(span.getSpanId()));
  }
  attachments.put(Span.SAMPLED_NAME, span.isExportable() ? Span.SPAN_SAMPLED : Span.SPAN_NOT_SAMPLED);
  attachments.put(Span.SPAN_NAME_NAME, span.getName());
  Long parentId = getParentId(span);
  if (parentId != null && parentId != 0) {
    attachments.put(Span.PARENT_ID_NAME, Span.idToHex(parentId));
  }
  attachments.put(Span.PROCESS_ID_NAME, span.getProcessId());
}

protected void attachTraceInfo(Tracer tracer, Span span, final Request request) {
  if (span == null) {
    setHeader(request, Span.SAMPLED_NAME, Span.SPAN_NOT_SAMPLED);
    return;
  }
  setHeader(request, TraceRequestAttributes.HANDLED_SPAN_REQUEST_ATTR, "true");
  setHeader(request, Span.SPAN_ID_NAME, Span.idToHex(span.getSpanId()));
  setHeader(request, Span.TRACE_ID_NAME, span.traceIdString());
  setHeader(request, Span.SPAN_NAME_NAME, span.getName());
  setHeader(request, Span.SAMPLED_NAME, span.isExportable() ?
      Span.SPAN_SAMPLED : Span.SPAN_NOT_SAMPLED);
  setHeader(request, Span.PARENT_ID_NAME,Span.idToHex(getParentId(span)));
  setHeader(request, Span.PROCESS_ID_NAME, span.getProcessId());
  if(span.getSavedSpan()!=null && span.getSavedSpan().tags()!=null){
    for (Entry<String, String> stringStringEntry : span.getSavedSpan().tags().entrySet()) {
      setHeader(request, stringStringEntry.getKey(), stringStringEntry.getValue());
    }
  }
  /*spanInjector.inject(span,null);
  tracer.inject(span.context(), Format.Builtin.TEXT_MAP, new TextMap() {
    @Override
    public void put(String key, String value) {
      request.setAttachment(key, value);
    }
    @Override
    public Iterator<Entry<String, String>> iterator() {
      throw new UnsupportedOperationException("TextMapInjectAdapter should only be used with Tracer.inject()");
    }
  });*/
}

        + "other parents for " + convertedSpan);
  zipkinSpan.parentId(Span.idToHex(convertedSpan.getParents().get(0)));
zipkinSpan.id(Span.idToHex(convertedSpan.getSpanId()));
if (StringUtils.hasText(convertedSpan.getName())) {
  zipkinSpan.name(convertedSpan.getName());