How does Magento 2 register its console commands

dmitry_fedyuk · November 8, 2015, 9:18am

Step 1

symfony/console/blob/0e5e18ae09d3f5c06367759be940e9ed3f568359/Application.php#L91-L93


foreach ($this->getDefaultCommands() as $command) {
    $this->add($command);
}

Step 2

github.com

magento/magento2/blob/22629abe10f9c640fe47b6081d57fedccdea8e0f/lib/internal/Magento/Framework/Console/Cli.php#L82-L85


protected function getDefaultCommands()
{
    return array_merge(parent::getDefaultCommands(), $this->getApplicationCommands());
}

Step 3

github.com

magento/magento2/blob/22629abe10f9c640fe47b6081d57fedccdea8e0f/lib/internal/Magento/Framework/Console/Cli.php#L105-L108


if (class_exists('Magento\Setup\Console\CommandList')) {
    $setupCommandList = new \Magento\Setup\Console\CommandList($this->serviceManager);
    $commands = array_merge($commands, $setupCommandList->getCommands());
}

Step 4

The list of console setup commands

Step 5

github.com

magento/magento2/blob/22629abe10f9c640fe47b6081d57fedccdea8e0f/setup/src/Magento/Setup/Console/CommandList.php#L87-L93


foreach ($this->getCommandsClasses() as $class) {
    if (class_exists($class)) {
        $commands[] = $this->serviceManager->create($class);
    } else {
        throw new \Exception('Class ' . $class . ' does not exist');
    }
}

Step 6

github.com

zendframework/zend-servicemanager/blob/855294e12771b4295c26446b6ed2df2f1785f234/src/ServiceManager.php#L579-L599


public function create($name)
{
    if (is_array($name)) {
        list($cName, $rName) = $name;
    } else {
        $rName = $name;


        // inlined code from ServiceManager::canonicalizeName for performance
        if (isset($this->canonicalNames[$rName])) {
            $cName = $this->canonicalNames[$name];
        } else {
            $cName = $this->canonicalizeName($name);
        }
    }


    if (isset($this->delegators[$cName])) {
        return $this->createDelegatorFromFactory($cName, $rName);
    }


    return $this->doCreate($rName, $cName);
}