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<?php |
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namespace Http\Client\Common; |
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use Http\Client\Exception; |
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use Http\Promise\Promise; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* A deferred allow to return a promise which has not been resolved yet. |
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*/ |
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class Deferred implements Promise |
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{ |
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private $value; |
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private $failure; |
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private $state; |
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private $waitCallback; |
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private $onFulfilledCallbacks; |
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private $onRejectedCallbacks; |
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public function __construct(callable $waitCallback) |
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{ |
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$this->waitCallback = $waitCallback; |
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$this->state = Promise::PENDING; |
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$this->onFulfilledCallbacks = []; |
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$this->onRejectedCallbacks = []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function then(callable $onFulfilled = null, callable $onRejected = null) |
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{ |
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$deferred = new self($this->waitCallback); |
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View Code Duplication |
$this->onFulfilledCallbacks[] = function (ResponseInterface $response) use ($onFulfilled, $deferred) { |
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try { |
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if (null !== $onFulfilled) { |
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$response = $onFulfilled($response); |
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} |
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$deferred->resolve($response); |
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} catch (Exception $exception) { |
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$deferred->reject($exception); |
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} |
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}; |
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View Code Duplication |
$this->onRejectedCallbacks[] = function (Exception $exception) use ($onRejected, $deferred) { |
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try { |
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if (null !== $onRejected) { |
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$response = $onRejected($exception); |
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$deferred->resolve($response); |
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return; |
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} |
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$deferred->reject($exception); |
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} catch (Exception $newException) { |
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$deferred->reject($newException); |
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} |
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}; |
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return $deferred; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getState() |
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{ |
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return $this->state; |
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} |
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/** |
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* Resolve this deferred with a Response. |
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*/ |
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public function resolve(ResponseInterface $response) |
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{ |
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if (self::PENDING !== $this->state) { |
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return; |
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} |
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$this->value = $response; |
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$this->state = self::FULFILLED; |
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foreach ($this->onFulfilledCallbacks as $onFulfilledCallback) { |
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$onFulfilledCallback($response); |
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} |
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} |
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/** |
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* Reject this deferred with an Exception. |
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*/ |
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public function reject(Exception $exception) |
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{ |
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if (self::PENDING !== $this->state) { |
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return; |
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} |
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$this->failure = $exception; |
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$this->state = self::REJECTED; |
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foreach ($this->onRejectedCallbacks as $onRejectedCallback) { |
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$onRejectedCallback($exception); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function wait($unwrap = true) |
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{ |
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if (self::PENDING === $this->state) { |
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$callback = $this->waitCallback; |
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$callback(); |
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} |
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if (!$unwrap) { |
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return; |
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} |
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if (self::FULFILLED === $this->state) { |
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return $this->value; |
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} |
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throw $this->failure; |
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} |
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} |
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php-http /
client-common
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.