1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Metrics/ObservableCallbackDestructor.php b/vendor/open-telemetry/sdk/Metrics/ObservableCallbackDestructor.php
new file mode 100644
index 000000000..0dfea3907
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/ObservableCallbackDestructor.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics;
+
+use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricWriterInterface;
+
+/**
+ * @internal
+ */
+final class ObservableCallbackDestructor
+{
+    /** @var array<int, int> */
+    public array $callbackIds = [];
+    private MetricWriterInterface $writer;
+    private ReferenceCounterInterface $referenceCounter;
+
+    public function __construct(MetricWriterInterface $writer, ReferenceCounterInterface $referenceCounter)
+    {
+        $this->writer = $writer;
+        $this->referenceCounter = $referenceCounter;
+    }
+
+    public function __destruct()
+    {
+        foreach ($this->callbackIds as $callbackId) {
+            $this->writer->unregisterCallback($callbackId);
+            $this->referenceCounter->release();
+        }
+    }
+}