1 files changed, 81 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Metrics/Aggregation/LastValueAggregation.php b/vendor/open-telemetry/sdk/Metrics/Aggregation/LastValueAggregation.php
new file mode 100644
index 000000000..aff04e315
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/Aggregation/LastValueAggregation.php
@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics\Aggregation;
+
+use OpenTelemetry\Context\ContextInterface;
+use OpenTelemetry\SDK\Common\Attribute\AttributesInterface;
+use OpenTelemetry\SDK\Metrics\AggregationInterface;
+use OpenTelemetry\SDK\Metrics\Data;
+
+/**
+ * @implements AggregationInterface<LastValueSummary>
+ */
+final class LastValueAggregation implements AggregationInterface
+{
+    public function initialize(): LastValueSummary
+    {
+        return new LastValueSummary(null, 0);
+    }
+
+    /**
+     * @param LastValueSummary $summary
+     */
+    public function record($summary, $value, AttributesInterface $attributes, ContextInterface $context, int $timestamp): void
+    {
+        if ($summary->value === null || $timestamp >= $summary->timestamp) {
+            $summary->value = $value;
+            $summary->timestamp = $timestamp;
+        }
+    }
+
+    /**
+     * @param LastValueSummary $left
+     * @param LastValueSummary $right
+     */
+    public function merge($left, $right): LastValueSummary
+    {
+        return $right->timestamp >= $left->timestamp ? $right : $left;
+    }
+
+    /**
+     * @param LastValueSummary $left
+     * @param LastValueSummary $right
+     */
+    public function diff($left, $right): LastValueSummary
+    {
+        return $right->timestamp >= $left->timestamp ? $right : $left;
+    }
+
+    /**
+     * @param array<LastValueSummary> $summaries
+     */
+    public function toData(
+        array $attributes,
+        array $summaries,
+        array $exemplars,
+        int $startTimestamp,
+        int $timestamp,
+        $temporality
+    ): Data\Gauge {
+        $dataPoints = [];
+        foreach ($attributes as $key => $dataPointAttributes) {
+            if ($summaries[$key]->value === null) {
+                continue;
+            }
+
+            $dataPoints[] = new Data\NumberDataPoint(
+                $summaries[$key]->value,
+                $dataPointAttributes,
+                $startTimestamp,
+                $timestamp,
+                $exemplars[$key] ?? [],
+            );
+        }
+
+        return new Data\Gauge(
+            $dataPoints,
+        );
+    }
+}