/** * Start a new span for a new client request that will be bound to current thread. The ClientTracer can decide to return * <code>null</code> in case this request should not be traced (eg sampling). * * @param requestName Request name. Should be lowercase and not <code>null</code> or empty. * @return Span id for new request or <code>null</code> in case we should not trace this new client request. */ public SpanId startNewSpan(String requestName) { Boolean sample = spanAndEndpoint().state().sample(); if (Boolean.FALSE.equals(sample)) { spanAndEndpoint().state().setCurrentClientSpan(null); return null; } SpanId newSpanId = getNewSpanId(); if (sample == null) { // No sample indication is present. if (!traceSampler().isSampled(newSpanId.traceId)) { spanAndEndpoint().state().setCurrentClientSpan(null); return null; } } Span newSpan = newSpanId.toSpan(); newSpan.setName(requestName); spanAndEndpoint().state().setCurrentClientSpan(newSpan); return newSpanId; }
Span newSpan = newSpanId.toSpan(); newSpan.setName(operation); newSpan.setTimestamp(timestamp);