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<?php |
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namespace League\Tactician\Bundle\DependencyInjection\Compiler; |
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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use Symfony\Component\DependencyInjection\Definition; |
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use Symfony\Component\DependencyInjection\Reference; |
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/** |
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* This compiler pass maps Handler DI tags to specific commands |
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*/ |
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class CommandHandlerPass implements CompilerPassInterface |
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{ |
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/** |
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* You can modify the container here before it is dumped to PHP code. |
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* |
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* @param ContainerBuilder $container |
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* |
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* @throws \Exception |
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* @api |
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*/ |
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public function process(ContainerBuilder $container) |
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{ |
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$defaultMapping = []; |
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$defaultBusId = $this->getDefaultBusId($container); |
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$busIdToHandlerMapping = []; |
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foreach ($container->findTaggedServiceIds('tactician.handler') as $id => $tags) { |
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foreach ($tags as $attributes) { |
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if (!isset($attributes['command'])) { |
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throw new \Exception('The tactician.handler tag must always have a command attribute'); |
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} |
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if (array_key_exists('bus', $attributes)) { |
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$this->abortIfInvalidBusId($attributes['bus'], $container); |
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} |
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$busId = array_key_exists('bus', $attributes) ? $attributes['bus'] : $defaultBusId; |
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$busIdToHandlerMapping[$busId][$attributes['command']] = $id; |
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} |
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} |
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foreach ($busIdToHandlerMapping as $busId => $handlerMapping) { |
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$locatorServiceId = 'tactician.commandbus.'.$busId.'.handler.locator'; |
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$container->setDefinition( |
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$locatorServiceId, |
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$this->buildLocatorDefinition($handlerMapping) |
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); |
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$container->setDefinition( |
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'tactician.commandbus.'.$busId.'.middleware.command_handler', |
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$this->buildCommandHandlerDefinition($locatorServiceId, $container) |
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); |
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} |
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$container->setAlias( |
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'tactician.handler.locator.symfony', |
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'tactician.commandbus.'.$defaultBusId.'.handler.locator' |
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); |
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$container->setAlias( |
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'tactician.middleware.command_handler', |
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'tactician.commandbus.'.$defaultBusId.'.middleware.command_handler' |
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); |
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} |
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protected function getDefaultBusId(ContainerBuilder $container) |
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{ |
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$config = $container->getExtensionConfig('tactician'); |
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return $config['default_bus']; |
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} |
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/** |
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* @param string $id |
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* @param ContainerBuilder $container |
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* @throws Exception |
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*/ |
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protected function abortIfInvalidBusId($id, ContainerBuilder $container) |
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{ |
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$config = $container->getExtensionConfig('tactician'); |
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if (!array_key_exists($id, $config['commandbus'])) { |
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throw new \Exception('Invalid bus id "'.$id.'". Valid buses are: '.implode(', ', array_keys($config['commandbus']))); |
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} |
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} |
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/** |
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* @param array $handlerMapping |
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* @return Definition |
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*/ |
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protected function buildLocatorDefinition(array $handlerMapping) |
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{ |
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return new Definition( |
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'League\Tactician\Bundle\Handler\ContainerBasedHandlerLocator', |
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[ |
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new Reference('service_container'), |
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$handlerMapping, |
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] |
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); |
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} |
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/** |
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* @param string $locatorServiceId |
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* @return Definition |
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*/ |
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protected function buildCommandHandlerDefinition($locatorServiceId, ContainerBuilder $container) |
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{ |
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$config = $container->getExtensionConfig('tactician'); |
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return new Definition( |
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'League\Tactician\Handler\CommandHandlerMiddleware', |
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[ |
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new Reference('tactician.handler.command_name_extractor.class_name'), |
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new Reference($locatorServiceId), |
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new Reference($config['method_inflector']) |
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] |
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); |
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} |
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123
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} |
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thephpleague /
tactician-bundle
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.