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<?php |
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namespace SamuelBednarcik\ElasticAPMAgent; |
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use SamuelBednarcik\ElasticAPMAgent\Exception\InvalidTraceContextHeaderException; |
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class TraceParent |
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{ |
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const HEADER_NAME = 'elastic-apm-traceparent'; |
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/** |
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* @var string |
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*/ |
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private $traceId; |
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/** |
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* @var string |
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*/ |
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private $spanId; |
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/** |
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* @var string |
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*/ |
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private $traceFlags; |
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/** |
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* @param string $traceId |
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* @param string $spanId |
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* @param string $traceFlags |
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*/ |
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public function __construct(string $traceId, string $spanId, string $traceFlags) |
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{ |
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$this->traceId = $traceId; |
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$this->spanId = $spanId; |
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$this->traceFlags = $traceFlags; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTraceId(): string |
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{ |
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return $this->traceId; |
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} |
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/** |
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* @param string $traceId |
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*/ |
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public function setTraceId(string $traceId): void |
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{ |
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$this->traceId = $traceId; |
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} |
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/** |
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* @return string |
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*/ |
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public function getSpanId(): string |
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{ |
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return $this->spanId; |
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} |
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/** |
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* @param string $spanId |
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*/ |
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public function setSpanId(string $spanId): void |
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{ |
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$this->spanId = $spanId; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTraceFlags(): string |
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{ |
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return $this->traceFlags; |
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} |
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/** |
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* @param string $traceFlags |
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*/ |
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public function setTraceFlags(string $traceFlags): void |
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{ |
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$this->traceFlags = $traceFlags; |
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} |
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/** |
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* @param string $header |
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* @return bool |
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*/ |
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public static function isValidHeader(string $header): bool |
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{ |
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return preg_match('/^00-[\da-f]{32}-[\da-f]{16}-[\da-f]{2}$/', $header) === 1; |
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} |
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/** |
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* @param string $header |
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* @return TraceParent |
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* @throws InvalidTraceContextHeaderException |
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*/ |
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public static function createFromHeader(string $header): TraceParent |
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{ |
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if (!self::isValidHeader($header)) { |
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throw new InvalidTraceContextHeaderException(); |
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} |
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$parsed = explode('-', $header); |
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return new TraceParent($parsed[1], $parsed[2], $parsed[3]); |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString(): string |
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{ |
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return sprintf( |
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'%s-%s-%s-%s', |
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'00', |
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$this->getTraceId(), |
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$this->getSpanId(), |
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$this->getTraceFlags() |
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); |
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} |
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} |
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samuelbednarcik /
elastic-apm-php-agent
