Definition : addMethodCall works but methods are never invoked - symfony

Question

I want to use custom tags on my services, so I followed the instructions in the documentation: http://symfony.com/doc/2.8/components/dependency_injection/tags.html
I have a RulesHydrator class:
<?php
namespace TestBundle\Thruway;
class RulesHydrator
{
private $container;
private $manualChecks = [];
public function __construct($container)
{
$this->container = $container;
}
public function addManualCheck($service, $rule, $method)
{
echo 'addManualCheck invoked!'.PHP_EOL;
exit;
$this->manualChecks[$rule] = $service;
}
}
Here is the compiler pass:
<?php
namespace TestBundle\Thruway;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\Reference;
class ThruwayCompilerPass implements CompilerPassInterface
{
public function process(ContainerBuilder $container)
{
if (!$container->has('thruway.rules_hydrator')) {
return;
}
$definition = $container->findDefinition('thruway.rules_hydrator');
foreach ($container->findTaggedServiceIds('thruway.manual_check') as $id => $tags) {
foreach ($tags as $attributes) {
$definition->addMethodCall('addManualCheck', [new Reference($id), $attributes['rule'], $attributes['method']]);
}
}
}
}
Here is my bundle's class:
<?php
namespace TestBundle;
use Symfony\Component\HttpKernel\Bundle\Bundle;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use TestBundle\Thruway\ThruwayCompilerPass;
class TestBundle extends Bundle
{
public function build(ContainerBuilder $container)
{
parent::build($container);
$container->addCompilerPass(new ThruwayCompilerPass());
}
}
My services.yml file look like this:
services:
thruway.rules_hydrator:
class: TestBundle\Thruway\RulesHydrator
thruway.customer_checker:
class: TestBundle\Thruway\MyChecker
tags:
- { name: thruway.manual_check, rule: some.rule1, method: someMethod1 }
- { name: thruway.manual_check, rule: some.rule2, method: someMethod2 }
The process method is called and the different calls to addMethodCall on my Definition object work fine (the property "calls" of the definition is correctly filled). The problem is that the calls to my method addManualCheck never occur. Any idea why?

Answer 1

The case could be that you did not instantiated the service. By default from what I remember the services are lazy loaded, and until you actually fetch one from the container, or it is injected into an other service, it will not be initialized.
Can you look into your appProdProjectContainer.php inside app/cache/prod for the "TestBundle\Thruway\MyChecker" and post back how it is used?
Also try a fast check by getting the thruway.customer_checker from the container.
A fast command like this could help
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class TestCommand extends ContainerAwareCommand
{
protected function configure()
{
$this->setName('service:test')->setDescription('Test service functionalities');
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$service = $this->getContainer()->get('thruway.customer_checker');
}
}