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<?php
declare(strict_types=1);
namespace Sentry\Tracing;
final class TransactionContext extends SpanContext
{
private const TRACEPARENT_HEADER_REGEX = '/^[ \\t]*(?<trace_id>[0-9a-f]{32})?-?(?<span_id>[0-9a-f]{16})?-?(?<sampled>[01])?[ \\t]*$/i';
public const DEFAULT_NAME = '<unlabeled transaction>';
/**
* @var string Name of the transaction
*/
private $name;
/**
* @var bool|null The parent's sampling decision
*/
private $parentSampled;
/**
* Constructor.
*
* @param string $name The name of the transaction
* @param bool|null $parentSampled The parent's sampling decision
*/
public function __construct(string $name = self::DEFAULT_NAME, ?bool $parentSampled = null)
{
$this->name = $name;
$this->parentSampled = $parentSampled;
}
/**
* Gets the name of the transaction.
*/
public function getName(): string
{
return $this->name;
}
/**
* Sets the name of the transaction.
*
* @param string $name The name
*/
public function setName(string $name): void
{
$this->name = $name;
}
/**
* Gets the parent's sampling decision.
*/
public function getParentSampled(): ?bool
{
return $this->parentSampled;
}
/**
* Sets the parent's sampling decision.
*
* @param bool|null $parentSampled The decision
*/
public function setParentSampled(?bool $parentSampled): void
{
$this->parentSampled = $parentSampled;
}
/**
* Returns a context populated with the data of the given header.
*
* @param string $header The sentry-trace header from the request
*
* @return self
*/
public static function fromSentryTrace(string $header)
{
$context = new self();
if (!preg_match(self::TRACEPARENT_HEADER_REGEX, $header, $matches)) {
return $context;
}
if (!empty($matches['trace_id'])) {
$context->traceId = new TraceId($matches['trace_id']);
}
if (!empty($matches['span_id'])) {
$context->parentSpanId = new SpanId($matches['span_id']);
}
if (isset($matches['sampled'])) {
$context->parentSampled = '1' === $matches['sampled'];
}
return $context;
}
}