// VisibleForTesting
static zipkin.Span convert(Span span, Host host) {
Builder zipkinSpan = zipkin.Span.builder();
Endpoint ep =
Endpoint.create(host.getServiceName(), host.getIpv4(), host.getPort().shortValue());
// A zipkin span without any annotations cannot be queried, add special "lc" to
// avoid that.
if (notClientOrServer(span)) {
ensureLocalComponent(span, zipkinSpan, ep);
}
ZipkinMessageListener.addZipkinAnnotations(zipkinSpan, span, ep);
ZipkinMessageListener.addZipkinBinaryAnnotations(zipkinSpan, span, ep);
if (hasClientSend(span)) {
ensureServerAddr(span, zipkinSpan, ep);
}
zipkinSpan.timestamp(span.getBegin() * 1000);
zipkinSpan.duration(span.getAccumulatedMillis() * 1000);
zipkinSpan.traceId(span.getTraceId());
if (span.getParents().size() > 0) {
if (span.getParents().size() > 1) {
log.debug(
"zipkin doesn't support spans with multiple parents. Omitting "
+ "other parents for "
+ span);
}
zipkinSpan.parentId(span.getParents().get(0));
}
zipkinSpan.id(span.getSpanId());
if (StringUtils.hasText(span.getName())) {
zipkinSpan.name(span.getName());
}
return zipkinSpan.build();
}
private static void ensureLocalComponent(Span span, Builder zipkinSpan, Endpoint ep) {
if (span.tags().containsKey(Constants.LOCAL_COMPONENT)) {
return;
}
String processId =
span.getProcessId() != null
? span.getProcessId().toLowerCase()
: ZipkinMessageListener.UNKNOWN_PROCESS_ID;
zipkinSpan.addBinaryAnnotation(
BinaryAnnotation.create(Constants.LOCAL_COMPONENT, processId, ep));
}