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<?php |
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/* |
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* This file is part of the Borobudur-Bus package. |
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* |
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* (c) Hexacodelabs <http://hexacodelabs.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Borobudur\Bus; |
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use Borobudur\Bus\Exception\LogicException; |
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use Borobudur\Bus\Message\MessageInterface; |
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/** |
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* @author Iqbal Maulana <[email protected]> |
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* @created 8/17/15 |
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*/ |
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class Bus implements BusInterface |
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{ |
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/** |
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* @var GateInterface |
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*/ |
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protected $gate; |
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/** |
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* @var mixed |
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*/ |
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protected $handler; |
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/** |
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* @var array |
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*/ |
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protected $messages = array(); |
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/** |
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* @var string |
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*/ |
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protected $method = 'handle'; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return 'bus'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setMethod($method) |
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{ |
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$this->method = $method; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getGate() |
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{ |
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return $this->gate; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setGate(GateInterface $gate) |
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{ |
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$this->gate = $gate; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setHandler($handler) |
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{ |
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$this->handler = $handler; |
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} |
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/** |
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* Register messages. |
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* |
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* @param array $messages |
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*/ |
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public function registers(array $messages) |
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{ |
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foreach ($messages as $message => $handler) { |
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$this->register($message, $handler); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function register($message, $handler) |
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{ |
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$this->messages[ltrim($message, '\\')] = $handler; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isRegistered(MessageInterface $message) |
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{ |
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return array_key_exists(get_class($message), $this->messages); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dispatch(MessageInterface $message) |
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{ |
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return $this->dispatchNow($message); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dispatchNow(MessageInterface $message) |
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{ |
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$class = ltrim(get_class($message), '\\'); |
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if (!isset($this->messages[$class])) { |
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throw new LogicException(sprintf('Message "%s" does not have handler.', $class)); |
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} |
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return $this->invoke($message, $this->messages[$class], $class); |
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} |
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/** |
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* Invoke message. |
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* |
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* @param MessageInterface $message |
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* @param mixed $handler |
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* @param string $class |
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* |
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* @return mixed |
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*/ |
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protected function invoke(MessageInterface $message, $handler, $class) |
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{ |
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if (null !== $this->handler) { |
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return call_user_func_array($this->handler, func_get_args()); |
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} |
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$handler = $this->buildHandler($handler); |
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$this->assertValidHandler($class, $handler); |
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return $this->handle($message, $handler); |
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} |
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/** |
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* Default dispatcher for message. |
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* |
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* @param MessageInterface $message |
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* @param mixed $handler |
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* |
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* @return mixed |
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*/ |
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protected function handle(MessageInterface $message, $handler) |
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{ |
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if (!is_callable($handler)) { |
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return call_user_func(array($handler, $this->method), $message); |
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} |
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return call_user_func($handler, $message); |
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} |
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/** |
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* Assert valid handler. |
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* |
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* @param string $class |
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* @param mixed $handler |
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*/ |
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protected function assertValidHandler($class, $handler) |
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{ |
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if (!is_callable($handler) && !is_object($handler)) { |
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throw new LogicException(sprintf( |
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'Handler for message "%s" should be callable or object, but got "%s".', |
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$class, |
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gettype($handler) |
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)); |
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} |
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$this->assertValidObjectHandler($handler); |
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} |
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/** |
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* Assert valid object handler. |
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* |
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* @param mixed $handler |
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*/ |
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protected function assertValidObjectHandler($handler) |
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{ |
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if (!is_callable($handler) && !method_exists($handler, $this->method)) { |
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throw new LogicException(sprintf('Object handler should have method "->%s()".', $this->method)); |
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} |
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} |
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/** |
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* Build class from string. |
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* |
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* @param string $class |
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* |
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* @return mixed|null |
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*/ |
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protected function buildClassString($class) |
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{ |
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if (class_exists($class)) { |
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return new $class(); |
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} |
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return null; |
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} |
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/** |
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* Build handler. |
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* |
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* @param mixed $handler |
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* |
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* @return mixed|null |
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*/ |
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protected function buildHandler($handler) |
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{ |
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if (is_callable($handler)) { |
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return $handler; |
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} |
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if (is_string($handler)) { |
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$class = '\\' . ltrim($handler, '\\'); |
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if (null !== $object = $this->buildClassString($class)) { |
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return $object; |
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} |
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} |
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return $handler; |
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} |
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} |
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