36 lines
862 B
PHP
36 lines
862 B
PHP
<?php
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declare(strict_types=1);
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namespace OpenTelemetry\Sdk\Trace;
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class RandomIdGenerator implements IdGenerator
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{
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private const TRACE_ID_HEX_LENGTH = 32;
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private const SPAN_ID_HEX_LENGTH = 16;
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public function generateTraceId(): string
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{
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return $this->randomHex(self::TRACE_ID_HEX_LENGTH);
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}
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public function generateSpanId(): string
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{
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return $this->randomHex(self::SPAN_ID_HEX_LENGTH);
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}
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private function randomHex(int $hexLength): string
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{
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try {
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return bin2hex(random_bytes(intdiv($hexLength, 2)));
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} catch (\Throwable $e) {
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return $this->fallbackAlgorithm($hexLength);
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}
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}
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private function fallbackAlgorithm(int $hexLength): string
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{
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return substr(str_shuffle(str_repeat('0123456789abcdef', $hexLength)), 1, $hexLength);
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}
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}
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