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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
}
}
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