1 files changed, 49 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Trace/RandomIdGenerator.php b/vendor/open-telemetry/sdk/Trace/RandomIdGenerator.php
new file mode 100644
index 000000000..39767fb0f
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Trace/RandomIdGenerator.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Trace;
+
+use OpenTelemetry\API\Trace\SpanContextValidator;
+use Throwable;
+
+class RandomIdGenerator implements IdGeneratorInterface
+{
+    private const TRACE_ID_HEX_LENGTH = 32;
+    private const SPAN_ID_HEX_LENGTH = 16;
+
+    public function generateTraceId(): string
+    {
+        do {
+            $traceId = $this->randomHex(self::TRACE_ID_HEX_LENGTH);
+        } while (!SpanContextValidator::isValidTraceId($traceId));
+
+        return $traceId;
+    }
+
+    public function generateSpanId(): string
+    {
+        do {
+            $spanId = $this->randomHex(self::SPAN_ID_HEX_LENGTH);
+        } while (!SpanContextValidator::isValidSpanId($spanId));
+
+        return $spanId;
+    }
+
+    /**
+     * @psalm-suppress ArgumentTypeCoercion $hexLength is always a positive integer
+     */
+    private function randomHex(int $hexLength): string
+    {
+        try {
+            return bin2hex(random_bytes(intdiv($hexLength, 2)));
+        } catch (Throwable $e) {
+            return $this->fallbackAlgorithm($hexLength);
+        }
+    }
+
+    private function fallbackAlgorithm(int $hexLength): string
+    {
+        return substr(str_shuffle(str_repeat('0123456789abcdef', $hexLength)), 1, $hexLength);
+    }
+}