98 lines
3.3 KiB
PHP
98 lines
3.3 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\API\Instrumentation;
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use ArrayAccess;
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use function assert;
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use function class_exists;
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use OpenTelemetry\API\Globals;
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use OpenTelemetry\API\Logs\LoggerInterface;
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use OpenTelemetry\API\Logs\LoggerProviderInterface;
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use OpenTelemetry\API\Metrics\MeterInterface;
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use OpenTelemetry\API\Metrics\MeterProviderInterface;
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use OpenTelemetry\API\Trace\TracerInterface;
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use OpenTelemetry\API\Trace\TracerProviderInterface;
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use const PHP_VERSION_ID;
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/**
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* Provides access to cached {@link TracerInterface} and {@link MeterInterface}
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* instances.
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*
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* Autoinstrumentation should prefer using a {@link CachedInstrumentation}
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* instance over repeatedly obtaining instrumentation instances from
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* {@link Globals}.
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*/
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final class CachedInstrumentation
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{
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private string $name;
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private ?string $version;
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private ?string $schemaUrl;
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private iterable $attributes;
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/** @var ArrayAccess<TracerProviderInterface, TracerInterface>|null */
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private ?ArrayAccess $tracers;
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/** @var ArrayAccess<MeterProviderInterface, MeterInterface>|null */
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private ?ArrayAccess $meters;
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/** @var ArrayAccess<LoggerProviderInterface, LoggerInterface>|null */
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private ?ArrayAccess $loggers;
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public function __construct(string $name, ?string $version = null, ?string $schemaUrl = null, iterable $attributes = [])
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{
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$this->name = $name;
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$this->version = $version;
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$this->schemaUrl = $schemaUrl;
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$this->attributes = $attributes;
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$this->tracers = self::createWeakMap();
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$this->meters = self::createWeakMap();
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$this->loggers = self::createWeakMap();
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}
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private static function createWeakMap(): ?ArrayAccess
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{
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if (PHP_VERSION_ID < 80000) {
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return null;
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}
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/** @phan-suppress-next-line PhanUndeclaredClassReference */
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assert(class_exists(\WeakMap::class, false));
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/** @phan-suppress-next-line PhanUndeclaredClassMethod */
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$map = new \WeakMap();
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assert($map instanceof ArrayAccess);
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return $map;
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}
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public function tracer(): TracerInterface
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{
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$tracerProvider = Globals::tracerProvider();
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if ($this->tracers === null) {
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return $tracerProvider->getTracer($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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return $this->tracers[$tracerProvider] ??= $tracerProvider->getTracer($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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public function meter(): MeterInterface
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{
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$meterProvider = Globals::meterProvider();
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if ($this->meters === null) {
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return $meterProvider->getMeter($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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return $this->meters[$meterProvider] ??= $meterProvider->getMeter($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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public function logger(): LoggerInterface
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{
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$loggerProvider = Globals::loggerProvider();
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if ($this->loggers === null) {
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return $loggerProvider->getLogger($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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return $this->loggers[$loggerProvider] ??= $loggerProvider->getLogger($this->name, $this->version, $this->schemaUrl, $this->attributes);
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}
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}
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