26 lines
684 B
PHP
26 lines
684 B
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\Context\Propagation;
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/**
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* @see https://github.com/open-telemetry/opentelemetry-specification/blob/v1.6.1/specification/context/api-propagators.md#getter-argument
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*/
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interface PropagationGetterInterface
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{
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/**
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* Returns the list of all the keys in the carrier.
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*
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* @see https://github.com/open-telemetry/opentelemetry-specification/blob/v1.6.1/specification/context/api-propagators.md#keys
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*
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* @return list<string>
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*/
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public function keys($carrier): array;
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/**
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* Gets the value of a given key from a carrier.
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*/
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public function get($carrier, string $key) : ?string;
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}
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