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<?php
declare(strict_types=1);
namespace OpenTelemetry\SDK\Metrics;
use OpenTelemetry\SDK\Common\Attribute\Attributes;
use OpenTelemetry\SDK\Common\Instrumentation\InstrumentationScopeFactory;
use OpenTelemetry\SDK\Common\Time\ClockFactory;
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilter\WithSampledTraceExemplarFilter;
use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilterInterface;
use OpenTelemetry\SDK\Metrics\StalenessHandler\NoopStalenessHandlerFactory;
use OpenTelemetry\SDK\Metrics\View\CriteriaViewRegistry;
use OpenTelemetry\SDK\Resource\ResourceInfo;
use OpenTelemetry\SDK\Resource\ResourceInfoFactory;
class MeterProviderBuilder
{
// @var array<MetricReaderInterface>
private array $metricReaders = [];
private ?ResourceInfo $resource = null;
private ?ExemplarFilterInterface $exemplarFilter = null;
public function setResource(ResourceInfo $resource): self
{
$this->resource = $resource;
return $this;
}
public function setExemplarFilter(ExemplarFilterInterface $exemplarFilter): self
{
$this->exemplarFilter = $exemplarFilter;
return $this;
}
public function addReader(MetricReaderInterface $reader): self
{
$this->metricReaders[] = $reader;
return $this;
}
/**
* @psalm-suppress PossiblyInvalidArgument
*/
public function build(): MeterProviderInterface
{
return new MeterProvider(
null,
$this->resource ?? ResourceInfoFactory::emptyResource(),
ClockFactory::getDefault(),
Attributes::factory(),
new InstrumentationScopeFactory(Attributes::factory()),
$this->metricReaders,
new CriteriaViewRegistry(),
$this->exemplarFilter ?? new WithSampledTraceExemplarFilter(),
new NoopStalenessHandlerFactory(),
);
}
}
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