function MultiTextMapPropagator::extractFields

Parameters

list<TextMapPropagatorInterface> $propagators:

Return value

list<string>

1 call to MultiTextMapPropagator::extractFields()

MultiTextMapPropagator::__construct in vendor/open-telemetry/context/Propagation/MultiTextMapPropagator.php

@no-named-arguments

File

vendor/open-telemetry/context/Propagation/MultiTextMapPropagator.php, line 57

Class

MultiTextMapPropagator

Namespace

OpenTelemetry\Context\Propagation

Code

private function extractFields(array $propagators) : array {
    return array_values(array_unique(array_merge(...array_map(static fn(TextMapPropagatorInterface $propagator) => $propagator->fields(), $propagators))));
}