59 lines
1.6 KiB
PHP
59 lines
1.6 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\SDK\Metrics;
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use OpenTelemetry\API\Metrics\ObservableCallbackInterface;
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use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricWriterInterface;
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/**
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* @internal
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*/
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final class ObservableCallback implements ObservableCallbackInterface
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{
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private MetricWriterInterface $writer;
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private ReferenceCounterInterface $referenceCounter;
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private ?int $callbackId;
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private ?ObservableCallbackDestructor $callbackDestructor;
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/** @phpstan-ignore-next-line */
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private ?object $target;
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public function __construct(MetricWriterInterface $writer, ReferenceCounterInterface $referenceCounter, int $callbackId, ?ObservableCallbackDestructor $callbackDestructor, ?object $target)
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{
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$this->writer = $writer;
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$this->referenceCounter = $referenceCounter;
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$this->callbackId = $callbackId;
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$this->callbackDestructor = $callbackDestructor;
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$this->target = $target;
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}
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public function detach(): void
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{
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if ($this->callbackId === null) {
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return;
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}
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$this->writer->unregisterCallback($this->callbackId);
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$this->referenceCounter->release();
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if ($this->callbackDestructor !== null) {
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unset($this->callbackDestructor->callbackIds[$this->callbackId]);
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}
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$this->callbackId = null;
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}
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public function __destruct()
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{
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if ($this->callbackDestructor !== null) {
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return;
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}
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if ($this->callbackId === null) {
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return;
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}
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$this->referenceCounter->acquire(true);
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$this->referenceCounter->release();
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}
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}
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