85 lines
2.1 KiB
PHP
85 lines
2.1 KiB
PHP
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<?php
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/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection */
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declare(strict_types=1);
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namespace OpenTelemetry\Context;
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use function assert;
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use function class_exists;
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use const E_USER_WARNING;
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use Fiber;
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use function trigger_error;
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/**
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* @internal
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*
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* @phan-file-suppress PhanUndeclaredClassReference
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* @phan-file-suppress PhanUndeclaredClassMethod
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*/
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final class FiberBoundContextStorage implements ContextStorageInterface, ExecutionContextAwareInterface
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{
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/** @var ContextStorageInterface&ExecutionContextAwareInterface */
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private ContextStorageInterface $storage;
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/**
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* @param ContextStorageInterface&ExecutionContextAwareInterface $storage
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*/
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public function __construct(ContextStorageInterface $storage)
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{
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$this->storage = $storage;
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}
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public function fork($id): void
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{
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$this->storage->fork($id);
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}
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public function switch($id): void
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{
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$this->storage->switch($id);
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}
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public function destroy($id): void
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{
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$this->storage->destroy($id);
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}
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public function scope(): ?ContextStorageScopeInterface
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{
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$this->checkFiberMismatch();
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if (($scope = $this->storage->scope()) === null) {
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return null;
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}
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return new FiberBoundContextStorageScope($scope);
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}
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public function current(): ContextInterface
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{
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$this->checkFiberMismatch();
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return $this->storage->current();
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}
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public function attach(ContextInterface $context): ContextStorageScopeInterface
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{
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$scope = $this->storage->attach($context);
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assert(class_exists(Fiber::class, false));
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$scope[Fiber::class] = Fiber::getCurrent();
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return new FiberBoundContextStorageScope($scope);
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}
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private function checkFiberMismatch(): void
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{
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$scope = $this->storage->scope();
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assert(class_exists(Fiber::class, false));
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if ($scope && $scope[Fiber::class] !== Fiber::getCurrent()) {
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trigger_error('Fiber context switching not supported', E_USER_WARNING);
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}
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}
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}
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