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<?php
namespace Jaeger\Codec;
use Jaeger\SpanContext;
interface CodecInterface
{
/**
* Handle the logic behind injecting propagation scheme specific information into the carrier
* (e.g. http request headers, amqp message headers, etc.).
*
* This method can modify the carrier.
*
* @see \Jaeger\Tracer::inject
*
* @param SpanContext $spanContext
* @param mixed $carrier
*
* @return void
*/
public function inject(SpanContext $spanContext, &$carrier);
/**
* Handle the logic behind extracting propagation-scheme specific information from carrier
* (e.g. http request headers, amqp message headers, etc.).
*
* This method must not modify the carrier.
*
* @see \Jaeger\Tracer::extract
*
* @param mixed $carrier
* @return SpanContext|null
*/
public function extract($carrier);
}
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