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• 3.7.0
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• ClientSpanState.java

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com.github.kristofa.brave.ClientSpanState Maven / Gradle / Ivy

package com.github.kristofa.brave;

import com.twitter.zipkin.gen.Span;

/**
 * Maintains state for a single client span.
 *
 * 
Client 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
 *     
A child of a local span originated by Brave
 * 
 *
 * @author kristof
 */
public interface ClientSpanState extends CommonSpanState {

    /**
     * Gets the Span for the client request that was started as part of current request.
     * 

     * Should be thread-aware to support multiple parallel requests.
     * 
     * @return Client request span for current thread.
     */
    Span getCurrentClientSpan();

    /**
     * Sets current client span.
     * 

     * Should be thread-aware to support multiple parallel requests.
     * 
     * @param span Client span.
     */
    void setCurrentClientSpan(final Span span);
}