1 files changed, 37 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Metrics/UpDownCounter.php b/vendor/open-telemetry/sdk/Metrics/UpDownCounter.php
new file mode 100644
index 000000000..1adf67f8a
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/UpDownCounter.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics;
+
+use OpenTelemetry\API\Metrics\UpDownCounterInterface;
+use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricWriterInterface;
+
+/**
+ * @internal
+ */
+final class UpDownCounter implements UpDownCounterInterface
+{
+    private MetricWriterInterface $writer;
+    private Instrument $instrument;
+    private ReferenceCounterInterface $referenceCounter;
+
+    public function __construct(MetricWriterInterface $writer, Instrument $instrument, ReferenceCounterInterface $referenceCounter)
+    {
+        $this->writer = $writer;
+        $this->instrument = $instrument;
+        $this->referenceCounter = $referenceCounter;
+
+        $this->referenceCounter->acquire();
+    }
+
+    public function __destruct()
+    {
+        $this->referenceCounter->release();
+    }
+
+    public function add($amount, iterable $attributes = [], $context = null): void
+    {
+        $this->writer->record($this->instrument, $amount, $attributes, $context);
+    }
+}