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package com.github.kristofa.brave;
import com.github.kristofa.brave.internal.Nullable;
import com.twitter.zipkin.gen.Span;
/**
* Maintains state for a single local span. This means nesting is not supported.
*
* Local spans can be at the following locations in the span tree.
*
* - The root-span of a trace originated by Brave
* - A child of a server span originated by Brave
*
*/
public interface LocalSpanState extends CommonSpanState {
/**
* Gets the Span for the local request that was started as part of current request.
*
* Should be thread-aware to support multiple parallel requests.
*
* @return Local request span for current thread.
*/
@Nullable
Span getCurrentLocalSpan();
/**
* Sets current local span.
*
* Should be thread-aware to support multiple parallel requests.
*
* @param span Local span.
*/
void setCurrentLocalSpan(Span span);
}