NoopTracer.php
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NoopTracer.php
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	<?php
	namespace Wikimedia\Telemetry;

	/**
	* A no-op tracer that creates no-op spans and persists no data.
	* Useful for scenarios where tracing is disabled.
	*
	* @since 1.43
	* @internal
	*/
	class NoopTracer implements TracerInterface {

	private SpanContext $noopSpanContext;

	public function __construct() {
	$this->noopSpanContext = new SpanContext( '', '', null, '', false );
	}

	/** @inheritDoc */
	public function createSpan( string $spanName, $parentSpan = null ): SpanInterface {
	return new NoopSpan( $this->noopSpanContext );
	}

	/** @inheritDoc */
	public function createRootSpan( string $spanName ): SpanInterface {
	return new NoopSpan( $this->noopSpanContext );
	}

	/** @inheritDoc */
	public function createSpanWithParent( string $spanName, SpanContext $parentSpanContext ): SpanInterface {
	return new NoopSpan( $this->noopSpanContext );
	}

	/** @inheritDoc */
	public function shutdown(): void {
	// no-op
	}
	}