98 lines
3.5 KiB
PHP
98 lines
3.5 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\Contrib\Otlp;
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use OpenTelemetry\API\Behavior\LogsMessagesTrait;
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use Opentelemetry\Proto\Collector\Metrics\V1\ExportMetricsServiceResponse;
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use OpenTelemetry\SDK\Common\Export\TransportInterface;
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use OpenTelemetry\SDK\Metrics\AggregationTemporalitySelectorInterface;
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use OpenTelemetry\SDK\Metrics\Data\Temporality;
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use OpenTelemetry\SDK\Metrics\MetricMetadataInterface;
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use OpenTelemetry\SDK\Metrics\PushMetricExporterInterface;
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use RuntimeException;
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use Throwable;
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/**
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* @see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk_exporters/stdout.md#opentelemetry-metrics-exporter---standard-output
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* @see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/file-exporter.md#json-file-serialization
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* @psalm-import-type SUPPORTED_CONTENT_TYPES from ProtobufSerializer
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*/
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final class MetricExporter implements PushMetricExporterInterface, AggregationTemporalitySelectorInterface
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{
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use LogsMessagesTrait;
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private TransportInterface $transport;
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private ProtobufSerializer $serializer;
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/**
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* @var string|Temporality|null
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*/
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private $temporality;
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/**
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* @param string|Temporality|null $temporality
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*
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* @psalm-param TransportInterface<SUPPORTED_CONTENT_TYPES> $transport
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*/
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public function __construct(TransportInterface $transport, $temporality = null)
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{
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if (!class_exists('\Google\Protobuf\Api')) {
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throw new RuntimeException('No protobuf implementation found (ext-protobuf or google/protobuf)');
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}
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$this->transport = $transport;
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$this->serializer = ProtobufSerializer::forTransport($transport);
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$this->temporality = $temporality;
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}
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public function temporality(MetricMetadataInterface $metric)
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{
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return $this->temporality ?? $metric->temporality();
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}
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public function export(iterable $batch): bool
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{
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return $this->transport
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->send($this->serializer->serialize((new MetricConverter($this->serializer))->convert($batch)))
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->map(function (?string $payload): bool {
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if ($payload === null) {
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return true;
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}
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$serviceResponse = new ExportMetricsServiceResponse();
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$this->serializer->hydrate($serviceResponse, $payload);
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$partialSuccess = $serviceResponse->getPartialSuccess();
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if ($partialSuccess !== null && $partialSuccess->getRejectedDataPoints()) {
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self::logError('Export partial success', [
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'rejected_data_points' => $partialSuccess->getRejectedDataPoints(),
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'error_message' => $partialSuccess->getErrorMessage(),
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]);
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return false;
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}
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if ($partialSuccess !== null && $partialSuccess->getErrorMessage()) {
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self::logWarning('Export success with warnings/suggestions', ['error_message' => $partialSuccess->getErrorMessage()]);
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}
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return true;
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})
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->catch(static function (Throwable $throwable): bool {
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self::logError('Export failure', ['exception' => $throwable]);
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return false;
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})
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->await();
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}
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public function shutdown(): bool
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{
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return $this->transport->shutdown();
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}
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public function forceFlush(): bool
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{
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return $this->transport->forceFlush();
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}
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}
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