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<?php |
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/** |
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* |
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* KNUT7 K7F (https://marciozebedeu.com/) |
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* KNUT7 K7F (tm) : Rapid Development Framework (https://marciozebedeu.com/) |
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* |
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* Licensed under The MIT License |
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* For full copyright and license information, please see the LICENSE.txt |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @link https://github.com/knut7/framework/ for the canonical source repository |
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* @copyright (c) 2015. KNUT7 Software Technologies AO Inc. (https://marciozebedeu.com/) |
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* @license MIT License |
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* @author Beyond Code GmbH |
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* @version 1.0.7 |
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* |
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* |
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*/ |
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namespace Ballybran\Core\Http; |
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use Closure; |
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class Pipeline |
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{ |
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/** |
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* The object being passed through the pipeline. |
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* |
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* @var mixed |
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*/ |
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protected $passable; |
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/** |
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* The array of class pipes. |
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* |
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* @var array |
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*/ |
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protected $pipes = []; |
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/** |
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* The additional parameters. |
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* |
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* @var array |
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*/ |
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protected $parameters = []; |
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/** |
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* The method to call on each pipe. |
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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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* Set the object being sent through the pipeline. |
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* |
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* @param mixed $passable |
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* @return $this |
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*/ |
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public function send(...$passable) |
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{ |
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$this->passable = $passable; |
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return $this; |
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} |
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/** |
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* Set the array of pipes. |
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* |
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* @param array|mixed $pipes |
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* @return $this |
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*/ |
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public function through($pipes) |
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{ |
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$this->pipes = is_array($pipes) ? $pipes : func_get_args(); |
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return $this; |
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} |
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/** |
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* Set the method to call on the pipes. |
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* |
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* @param string $method |
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* @return $this |
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*/ |
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public function via($method) |
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{ |
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$this->method = $method; |
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return $this; |
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} |
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/** |
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* Set the additional parameters to send |
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* |
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* @param mixed $parameters |
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* @return $this |
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*/ |
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public function with(...$parameters) |
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{ |
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$this->parameters = $parameters; |
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return $this; |
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} |
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/** |
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* Run the pipeline with a final destination callback. |
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* |
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* @param \Closure $destination |
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* @return mixed |
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*/ |
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public function then(Closure $destination) |
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{ |
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$pipeline = array_reduce( |
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array_reverse($this->pipes), $this->carry(), $this->prepareDestination($destination) |
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); |
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return call_user_func_array($pipeline, $this->passable); |
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} |
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/** |
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* Get the final piece of the Closure onion. |
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* |
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* @param \Closure $destination |
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* @return \Closure |
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*/ |
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protected function prepareDestination(Closure $destination) |
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{ |
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return function () use ($destination) { |
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return call_user_func_array($destination, func_get_args()); |
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}; |
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} |
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/** |
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* Get a Closure that represents a slice of the application onion. |
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* |
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* @return \Closure |
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*/ |
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protected function carry() |
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{ |
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return function ($stack, $pipe) { |
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return function () use ($stack, $pipe) { |
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$passable = func_get_args(); |
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$passable[] = $stack; |
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$passable = array_merge($passable, $this->parameters); |
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if (is_callable($pipe)) { |
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// If the pipe is an instance of a Closure, we will just call it directly but |
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// otherwise we'll resolve the pipes out of the container and call it with |
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// the appropriate method and arguments, returning the results back out. |
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return call_user_func_array($pipe, $passable); |
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} elseif (! is_object($pipe)) { |
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list($name, $parameters) = $this->parsePipeString($pipe); |
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// If the pipe is a string we will parse the string and resolve the class out |
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// of the dependency injection container. We can then build a callable and |
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// execute the pipe function giving in the parameters that are required. |
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$pipe = new $name(); |
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$parameters = array_merge($passable, $parameters); |
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} else { |
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// If the pipe is already an object we'll just make a callable and pass it to |
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// the pipe as-is. There is no need to do any extra parsing and formatting |
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// since the object we're given was already a fully instantiated object. |
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$parameters = $passable; |
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} |
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return method_exists($pipe, $this->method) |
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? call_user_func_array([$pipe, $this->method], $parameters) |
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: $pipe(...$parameters); |
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}; |
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}; |
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} |
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/** |
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* Parse full pipe string to get name and parameters. |
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* |
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* @param string $pipe |
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* @return array |
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*/ |
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protected function parsePipeString($pipe) |
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{ |
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list($name, $parameters) = array_pad(explode(':', $pipe, 2), 2, []); |
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if (is_string($parameters)) { |
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$parameters = explode(',', $parameters); |
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} |
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return [$name, $parameters]; |
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} |
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} |
knut7 /
framework
