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[Messenger] Add interfaces to be type-hinted even when not using a Container #28394

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Merged
merged 1 commit into from
Sep 8, 2018
Merged

[Messenger] Add interfaces to be type-hinted even when not using a Container #28394

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55 changes: 55 additions & 0 deletions src/Symfony/Component/Messenger/Handler/Locator/AbstractHandlerLocator.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,55 @@
<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\Messenger\Handler\Locator;

use Symfony\Component\Messenger\Exception\NoHandlerForMessageException;

/**
* @author Miha Vrhovnik <[email protected]>
* @author Samuel Roze <[email protected]>
*/
abstract class AbstractHandlerLocator implements HandlerLocatorInterface
{
public function resolve($message): callable
{
$messageClass = \get_class($message);

if (null === $handler = $this->resolveFromClass($messageClass)) {
throw new NoHandlerForMessageException(sprintf('No handler for message "%s".', $messageClass));
}

return $handler;
}

private function resolveFromClass(string $class): ?callable
{
if ($handler = $this->getHandler($class)) {
return $handler;
}

foreach (class_implements($class, false) as $interface) {
if ($handler = $this->getHandler($interface)) {
return $handler;
}
}

foreach (class_parents($class, false) as $parent) {
if ($handler = $this->getHandler($parent)) {
return $handler;
}
}

return null;
}

abstract protected function getHandler(string $class);
}
37 changes: 2 additions & 35 deletions src/Symfony/Component/Messenger/Handler/Locator/ContainerHandlerLocator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -12,13 +12,12 @@
namespace Symfony\Component\Messenger\Handler\Locator;

use Psr\Container\ContainerInterface;
use Symfony\Component\Messenger\Exception\NoHandlerForMessageException;

/**
* @author Miha Vrhovnik <[email protected]>
* @author Samuel Roze <[email protected]>
*/
class ContainerHandlerLocator implements HandlerLocatorInterface
class ContainerHandlerLocator extends AbstractHandlerLocator
{
private $container;

Expand All @@ -27,39 +26,7 @@ public function __construct(ContainerInterface $container)
$this->container = $container;
}

public function resolve($message): callable
{
$messageClass = \get_class($message);

if (null === $handler = $this->resolveFromClass($messageClass)) {
throw new NoHandlerForMessageException(sprintf('No handler for message "%s".', $messageClass));
}

return $handler;
}

private function resolveFromClass($class): ?callable
{
if ($handler = $this->getHandler($class)) {
return $handler;
}

foreach (class_implements($class, false) as $interface) {
if ($handler = $this->getHandler($interface)) {
return $handler;
}
}

foreach (class_parents($class, false) as $parent) {
if ($handler = $this->getHandler($parent)) {
return $handler;
}
}

return null;
}

private function getHandler($class)
protected function getHandler(string $class)
{
$handlerKey = 'handler.'.$class;

Expand Down
14 changes: 3 additions & 11 deletions src/Symfony/Component/Messenger/Handler/Locator/HandlerLocator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -11,12 +11,10 @@

namespace Symfony\Component\Messenger\Handler\Locator;

use Symfony\Component\Messenger\Exception\NoHandlerForMessageException;

/**
* @author Samuel Roze <[email protected]>
*/
class HandlerLocator implements HandlerLocatorInterface
class HandlerLocator extends AbstractHandlerLocator
{
/**
* Maps a message (its class) to a given handler.
Expand All @@ -28,14 +26,8 @@ public function __construct(array $messageToHandlerMapping = array())
$this->messageToHandlerMapping = $messageToHandlerMapping;
}

public function resolve($message): callable
protected function getHandler(string $class)
{
$messageKey = \get_class($message);

if (!isset($this->messageToHandlerMapping[$messageKey])) {
throw new NoHandlerForMessageException(sprintf('No handler for message "%s".', $messageKey));
}

return $this->messageToHandlerMapping[$messageKey];
return $this->messageToHandlerMapping[$class] ?? null;
}
}