class MultiTextMapPropagator

Hierarchy

class \OpenTelemetry\Context\Propagation\MultiTextMapPropagator implements \OpenTelemetry\Context\Propagation\TextMapPropagatorInterface

Expanded class hierarchy of MultiTextMapPropagator

1 file declares its use of MultiTextMapPropagator

PropagatorFactory.php in vendor/open-telemetry/sdk/Propagation/PropagatorFactory.php

File

vendor/open-telemetry/context/Propagation/MultiTextMapPropagator.php, line 14

Namespace

OpenTelemetry\Context\Propagation

View source

final class MultiTextMapPropagator implements TextMapPropagatorInterface {
    
    /** @var list<string> */
    private readonly array $fields;
    
    /**
     * @no-named-arguments
     *
     * @param list<TextMapPropagatorInterface> $propagators
     */
    public function __construct(array $propagators) {
        $this->fields = $this->extractFields($this->propagators);
    }
    public function fields() : array {
        return $this->fields;
    }
    public function inject(&$carrier, ?PropagationSetterInterface $setter = null, ?ContextInterface $context = null) : void {
        foreach ($this->propagators as $propagator) {
            $propagator->inject($carrier, $setter, $context);
        }
    }
    public function extract($carrier, ?PropagationGetterInterface $getter = null, ?ContextInterface $context = null) : ContextInterface {
        $context ??= Context::getCurrent();
        foreach ($this->propagators as $propagator) {
            $context = $propagator->extract($carrier, $getter, $context);
        }
        return $context;
    }
    
    /**
     * @param list<TextMapPropagatorInterface> $propagators
     * @return list<string>
     */
    private function extractFields(array $propagators) : array {
        return array_values(array_unique(array_merge(...array_map(static fn(TextMapPropagatorInterface $propagator) => $propagator->fields(), $propagators))));
    }

}

Members

Title Sort descending	Modifiers	Object type	Summary	Overriden Title
MultiTextMapPropagator::$fields	private	property	@var list<string>
MultiTextMapPropagator::extract	public	function	Extracts specific values from the provided carrier into the provided {via an {	Overrides TextMapPropagatorInterface::extract
MultiTextMapPropagator::extractFields	private	function
MultiTextMapPropagator::fields	public	function	Returns list of fields that will be used by this propagator.	Overrides TextMapPropagatorInterface::fields
MultiTextMapPropagator::inject	public	function	Injects specific values from the provided {via an {	Overrides TextMapPropagatorInterface::inject
MultiTextMapPropagator::__construct	public	function	@no-named-arguments