Add listeners that launch on particular firewalls

FirewallListenerCompilerPass.php

<?php

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;

/**
 * Class FirewallListenerCompilerPass
 *
 * @author Berny Cantos <be@rny.cc>
 */
class FirewallListenerCompilerPass implements CompilerPassInterface
{
    /**
     * You can modify the container here before it is dumped to PHP code.
     *
     * @param ContainerBuilder $container
     *
     * @api
     */
    public function process(ContainerBuilder $container)
    {
        if (!$container->has('security.firewall.context')) {
            return;
        }

        $listenersByContext = $this->collectListenersByContext($container);

        foreach ($listenersByContext as $context_id => $listeners) {
            $context_definition = $container->findDefinition($context_id);

            $arguments = $context_definition->getArgument(0);
            $arguments = array_merge($arguments, $listeners);
            $context_definition->replaceArgument(0, $arguments);
        }
    }

    /**
     * @param  ContainerBuilder $container
     *
     * @return array
     */
    protected function collectListenersByContext(ContainerBuilder $container)
    {
        $listenersByContext = array();
        $taggedListeners = $container->findTaggedServiceIds('firewall_listener');
        foreach ($taggedListeners as $listener_id => $tags) {
            foreach ($tags as $tag) {

                if (!isset($tag['firewall'])) {
                    throw new \RuntimeException(sprintf(
                        'Must define "firewall" in "firewall_listener" tag of "%s" definition.',
                        $listener_id
                    ));
                }

                $firewall_id = $tag['firewall'];
                $context_id = 'security.firewall.map.context.' . $firewall_id;

                if (!$container->has($context_id)) {
                    throw new \RuntimeException(sprintf(
                        'Context for firewall "%s" does not exist for "%s" definition.',
                        $firewall_id,
                        $listener_id
                    ));
                }

                $listenersByContext[$context_id][] = new Reference($listener_id);
            }
        }

        return $listenersByContext;
    }
}

services.yml

services:

    #
    # Event Listeners
    #
    store.core.event_listener.store_disabled:
        class: %store.core.event_listener.store_disabled.class%
        tags:
            - { name: firewall_listener, firewall: secured_area }

    store.core.event_listener.store_under_construction:
        class: %store.core.event_listener.store_under_construction.class%
        tags:
            - { name: firewall_listener, firewall: secured_area }