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<?php
namespace Guzzle\Service\Command;
use Guzzle\Common\Exception\InvalidArgumentException;
use Guzzle\Common\Exception\UnexpectedValueException;
use Guzzle\Http\Message\RequestInterface;
/**
* A ClosureCommand is a command that allows dynamic commands to be created at runtime using a closure to prepare the
* request. A closure key and \Closure value must be passed to the command in the constructor. The closure must
* accept the command object as an argument.
*/
class ClosureCommand extends AbstractCommand
{
/**
* {@inheritdoc}
* @throws InvalidArgumentException if a closure was not passed
*/
protected function init()
{
if (!$this['closure']) {
throw new InvalidArgumentException('A closure must be passed in the parameters array');
}
}
/**
* {@inheritdoc}
* @throws UnexpectedValueException If the closure does not return a request
*/
protected function build()
{
$closure = $this['closure'];
/** @var $closure \Closure */
$this->request = $closure($this, $this->operation);
if (!$this->request || !$this->request instanceof RequestInterface) {
throw new UnexpectedValueException('Closure command did not return a RequestInterface object');
}
}
}
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