How does Magento\Setup\Module\Di\App\Task\Operation\Interception::doOperation() work?

Development Compilation

dmitry_fedyuk (Dmitrii Fediuk) October 13, 2017, 1:40pm 1

Context: How are the interceptors generated on setup:di:compile in Magento 2.2?

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/App/Task/Operation/Interception.php#L63-L70


/**
 * {@inheritdoc}
 */
public function doOperation()
{
    if (empty($this->data)) {
        return;
    }

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/App/Task/Operation/Interception.php#L71-L75


$this->interceptionConfigurationBuilder->addAreaCode(App\Area::AREA_GLOBAL);


foreach ($this->areaList->getCodes() as $areaCode) {
    $this->interceptionConfigurationBuilder->addAreaCode($areaCode);
}

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/App/Task/Operation/Interception.php#L77-L85


$classesList = [];
foreach ($this->data['intercepted_paths'] as $paths) {
    if (!is_array($paths)) {
        $paths = (array)$paths;
    }
    foreach ($paths as $path) {
        $classesList = array_merge($classesList, $this->classesScanner->getList($path));
    }
}

Details: How does Magento\Setup\Module\Di\Code\Reader\ClassesScanner::getList() work?

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/App/Task/Operation/Interception.php#L87-L99


$generatorIo = new \Magento\Framework\Code\Generator\Io(
    new \Magento\Framework\Filesystem\Driver\File(),
    $this->data['path_to_store']
);
$generator = $this->generatorFactory->create(
    [
        'ioObject' => $generatorIo,
        'generatedEntities' => [
            Interceptor::ENTITY_TYPE => \Magento\Setup\Module\Di\Code\Generator\Interceptor::class,
        ]
    ]
);
$configuration = $this->interceptionConfigurationBuilder->getInterceptionConfiguration($classesList);

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/App/Task/Operation/Interception.php#L100-L100


$generator->generateList($configuration);

Magento\Setup\Module\Di\Code\Generator::generateList()

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/Code/Generator.php#L58-L72


/**
 * Generates list of classes
 *
 * @param array $classesToGenerate
 * @throws \Magento\Framework\Exception\LocalizedException
 * @return void
 */
public function generateList($classesToGenerate)
{
    foreach ($classesToGenerate as $class => $methods) {
        $this->setClassMethods($methods);
        $this->generateClass($class . '\\Interceptor');
        $this->clearClassMethods();
    }
}

How are the interceptors generated on «setup:di:compile» in Magento 2.2?