79 lines
3.2 KiB
PHP
79 lines
3.2 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
namespace OpenTelemetry\SDK\Metrics;
|
|
|
|
use InvalidArgumentException;
|
|
use OpenTelemetry\API\Behavior\LogsMessagesTrait;
|
|
use OpenTelemetry\SDK\Common\Configuration\Configuration;
|
|
use OpenTelemetry\SDK\Common\Configuration\KnownValues;
|
|
use OpenTelemetry\SDK\Common\Configuration\Variables;
|
|
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilter\AllExemplarFilter;
|
|
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilter\NoneExemplarFilter;
|
|
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilter\WithSampledTraceExemplarFilter;
|
|
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilterInterface;
|
|
use OpenTelemetry\SDK\Metrics\MetricExporter\NoopMetricExporter;
|
|
use OpenTelemetry\SDK\Metrics\MetricReader\ExportingReader;
|
|
use OpenTelemetry\SDK\Registry;
|
|
use OpenTelemetry\SDK\Resource\ResourceInfoFactory;
|
|
use OpenTelemetry\SDK\Sdk;
|
|
|
|
class MeterProviderFactory
|
|
{
|
|
use LogsMessagesTrait;
|
|
|
|
/**
|
|
* @todo https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk_exporters/otlp.md#general
|
|
* - "The exporter MUST configure the default aggregation on the basis of instrument kind using the
|
|
* OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION variable as described below if it is implemented."
|
|
*/
|
|
public function create(): MeterProviderInterface
|
|
{
|
|
if (Sdk::isDisabled()) {
|
|
return new NoopMeterProvider();
|
|
}
|
|
$exporters = Configuration::getList(Variables::OTEL_METRICS_EXPORTER);
|
|
//TODO "The SDK MAY accept a comma-separated list to enable setting multiple exporters"
|
|
if (count($exporters) !== 1) {
|
|
throw new InvalidArgumentException(sprintf('Configuration %s requires exactly 1 exporter', Variables::OTEL_METRICS_EXPORTER));
|
|
}
|
|
$exporterName = $exporters[0];
|
|
|
|
try {
|
|
$factory = Registry::metricExporterFactory($exporterName);
|
|
$exporter = $factory->create();
|
|
} catch (\Throwable $t) {
|
|
self::logWarning(sprintf('Unable to create %s meter provider: %s', $exporterName, $t->getMessage()));
|
|
$exporter = new NoopMetricExporter();
|
|
}
|
|
|
|
// @todo "The exporter MUST be paired with a periodic exporting MetricReader"
|
|
$reader = new ExportingReader($exporter);
|
|
$resource = ResourceInfoFactory::defaultResource();
|
|
$exemplarFilter = $this->createExemplarFilter(Configuration::getEnum(Variables::OTEL_METRICS_EXEMPLAR_FILTER));
|
|
|
|
return MeterProvider::builder()
|
|
->setResource($resource)
|
|
->addReader($reader)
|
|
->setExemplarFilter($exemplarFilter)
|
|
->build();
|
|
}
|
|
|
|
private function createExemplarFilter(string $name): ExemplarFilterInterface
|
|
{
|
|
switch ($name) {
|
|
case KnownValues::VALUE_WITH_SAMPLED_TRACE:
|
|
return new WithSampledTraceExemplarFilter();
|
|
case KnownValues::VALUE_ALL:
|
|
return new AllExemplarFilter();
|
|
case KnownValues::VALUE_NONE:
|
|
return new NoneExemplarFilter();
|
|
default:
|
|
self::logWarning('Unknown exemplar filter: ' . $name);
|
|
|
|
return new NoneExemplarFilter();
|
|
}
|
|
}
|
|
}
|