File Guzzle/Service/Command/ClosureCommand.php

 1: <?php
 2: 
 3: namespace Guzzle\Service\Command;
 4: 
 5: use Guzzle\Common\Exception\InvalidArgumentException;
 6: use Guzzle\Common\Exception\UnexpectedValueException;
 7: use Guzzle\Http\Message\RequestInterface;
 8: 
 9: /**
10:  * A ClosureCommand is a command that allows dynamic commands to be created at runtime using a closure to prepare the
11:  * request. A closure key and \Closure value must be passed to the command in the constructor. The closure must
12:  * accept the command object as an argument.
13:  */
14: class ClosureCommand extends AbstractCommand
15: {
16:     /**
17:      * {@inheritdoc}
18:      * @throws InvalidArgumentException if a closure was not passed
19:      */
20:     protected function init()
21:     {
22:         if (!$this->get('closure')) {
23:             throw new InvalidArgumentException('A closure must be passed in the parameters array');
24:         }
25:     }
26: 
27:     /**
28:      * {@inheritdoc}
29:      * @throws UnexpectedValueException If the closure does not return a request
30:      */
31:     protected function build()
32:     {
33:         $closure = $this->get('closure');
34:         /** @var $closure \Closure */
35:         $this->request = $closure($this, $this->operation);
36: 
37:         if (!$this->request || !$this->request instanceof RequestInterface) {
38:             throw new UnexpectedValueException('Closure command did not return a RequestInterface object');
39:         }
40:     }
41: }
42:
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