1 files changed, 78 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Metrics/MetricExporter/InMemoryExporter.php b/vendor/open-telemetry/sdk/Metrics/MetricExporter/InMemoryExporter.php
new file mode 100644
index 000000000..6bbab8b79
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/MetricExporter/InMemoryExporter.php
@@ -0,0 +1,78 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics\MetricExporter;
+
+use function array_push;
+use OpenTelemetry\SDK\Metrics\AggregationTemporalitySelectorInterface;
+use OpenTelemetry\SDK\Metrics\Data\Metric;
+use OpenTelemetry\SDK\Metrics\Data\Temporality;
+use OpenTelemetry\SDK\Metrics\MetricExporterInterface;
+use OpenTelemetry\SDK\Metrics\MetricMetadataInterface;
+
+/**
+ * @see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk_exporters/in-memory.md
+ */
+final class InMemoryExporter implements MetricExporterInterface, AggregationTemporalitySelectorInterface
+{
+    /**
+     * @var list<Metric>
+     */
+    private array $metrics = [];
+    /**
+     * @var string|Temporality|null
+     */
+    private $temporality;
+
+    private bool $closed = false;
+
+    /**
+     * @param string|Temporality|null $temporality
+     */
+    public function __construct($temporality = null)
+    {
+        $this->temporality = $temporality;
+    }
+
+    public function temporality(MetricMetadataInterface $metric)
+    {
+        return $this->temporality ?? $metric->temporality();
+    }
+
+    /**
+     * @return list<Metric>
+     */
+    public function collect(bool $reset = false): array
+    {
+        $metrics = $this->metrics;
+        if ($reset) {
+            $this->metrics = [];
+        }
+
+        return $metrics;
+    }
+
+    public function export(iterable $batch): bool
+    {
+        if ($this->closed) {
+            return false;
+        }
+
+        /** @psalm-suppress InvalidPropertyAssignmentValue */
+        array_push($this->metrics, ...$batch);
+
+        return true;
+    }
+
+    public function shutdown(): bool
+    {
+        if ($this->closed) {
+            return false;
+        }
+
+        $this->closed = true;
+
+        return true;
+    }
+}