1 files changed, 105 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Metrics/MetricExporter/ConsoleMetricExporter.php b/vendor/open-telemetry/sdk/Metrics/MetricExporter/ConsoleMetricExporter.php
new file mode 100644
index 000000000..62ea7b535
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/MetricExporter/ConsoleMetricExporter.php
@@ -0,0 +1,105 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics\MetricExporter;
+
+use OpenTelemetry\SDK\Common\Instrumentation\InstrumentationScopeInterface;
+use OpenTelemetry\SDK\Metrics\AggregationTemporalitySelectorInterface;
+use OpenTelemetry\SDK\Metrics\Data\Metric;
+use OpenTelemetry\SDK\Metrics\Data\Temporality;
+use OpenTelemetry\SDK\Metrics\MetricMetadataInterface;
+use OpenTelemetry\SDK\Metrics\PushMetricExporterInterface;
+use OpenTelemetry\SDK\Resource\ResourceInfo;
+
+/**
+ * Console metrics exporter.
+ * Note that the output is human-readable JSON, not compatible with OTLP.
+ */
+class ConsoleMetricExporter implements PushMetricExporterInterface, AggregationTemporalitySelectorInterface
+{
+    /**
+     * @var string|Temporality|null
+     */
+    private $temporality;
+
+    /**
+     * @param string|Temporality|null $temporality
+     */
+    public function __construct($temporality = null)
+    {
+        $this->temporality = $temporality;
+    }
+    /**
+     * @inheritDoc
+     */
+    public function temporality(MetricMetadataInterface $metric)
+    {
+        return $this->temporality ?? $metric->temporality();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function export(iterable $batch): bool
+    {
+        $resource = null;
+        $scope = null;
+        foreach ($batch as $metric) {
+            /** @var Metric $metric */
+            if (!$resource) {
+                $resource = $this->convertResource($metric->resource);
+            }
+            if (!$scope) {
+                $scope = $this->convertInstrumentationScope($metric->instrumentationScope);
+                $scope['metrics'] = [];
+            }
+            $scope['metrics'][] = $this->convertMetric($metric);
+        }
+        $output = [
+            'resource' => $resource,
+            'scope' => $scope,
+        ];
+        echo json_encode($output, JSON_PRETTY_PRINT) . PHP_EOL;
+
+        return true;
+    }
+
+    public function shutdown(): bool
+    {
+        return true;
+    }
+
+    public function forceFlush(): bool
+    {
+        return true;
+    }
+
+    private function convertMetric(Metric $metric): array
+    {
+        return [
+            'name' => $metric->name,
+            'description' => $metric->description,
+            'unit' => $metric->unit,
+            'data' => $metric->data,
+        ];
+    }
+
+    private function convertResource(ResourceInfo $resource): array
+    {
+        return [
+            'attributes' => $resource->getAttributes()->toArray(),
+            'dropped_attributes_count' => $resource->getAttributes()->getDroppedAttributesCount(),
+        ];
+    }
+    private function convertInstrumentationScope(InstrumentationScopeInterface $scope): array
+    {
+        return [
+            'name' => $scope->getName(),
+            'version' => $scope->getVersion(),
+            'attributes' => $scope->getAttributes()->toArray(),
+            'dropped_attributes_count' => $scope->getAttributes()->getDroppedAttributesCount(),
+            'schema_url' => $scope->getSchemaUrl(),
+        ];
+    }
+}