36 lines
1.1 KiB
PHP
36 lines
1.1 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\API\Trace;
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use function strlen;
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use function strtolower;
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class SpanContextValidator
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{
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public const VALID_SPAN = '/^[0-9a-f]{16}$/';
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public const VALID_TRACE = '/^[0-9a-f]{32}$/';
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public const INVALID_SPAN = '0000000000000000';
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public const INVALID_TRACE = '00000000000000000000000000000000';
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public const SPAN_LENGTH = 16;
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public const TRACE_LENGTH = 32;
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public const SPAN_LENGTH_BYTES = 8;
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/**
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* @return bool Returns a value that indicates whether a trace id is valid
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*/
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public static function isValidTraceId(string $traceId): bool
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{
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return ctype_xdigit($traceId) && strlen($traceId) === self::TRACE_LENGTH && $traceId !== self::INVALID_TRACE && $traceId === strtolower($traceId);
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}
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/**
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* @return bool Returns a value that indicates whether a span id is valid
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*/
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public static function isValidSpanId(string $spanId): bool
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{
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return ctype_xdigit($spanId) && strlen($spanId) === self::SPAN_LENGTH && $spanId !== self::INVALID_SPAN && $spanId === strtolower($spanId);
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}
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}
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