Symfony：如何同时获得标记服务和已处理配置？

Question

我试图symfony配置，以确定如何连接一些标记的服务，但我遇到了问题。我试图把这个问题浓缩成尽可能少的代码来帮助解释，但是仍然——抱歉太长了！

这里是配置部分的东西。。。

class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder('acme_test');
        $treeBuilder
            ->getRootNode()
            ->addDefaultsIfNotSet()
            ->children()
                ->scalarNode('email_sender')->isRequired()->end()
                ->scalarNode('email_title')->defaultValue('Notification email')->end()
            ->end();

        return $treeBuilder;
    }
}

acme_test:
    email_sender: '[e-mail]'

我也有一个任意的服务，它需要$emailSender和$emailTitle。在services.yaml中，它被标记为任意服务标签：

class ArbitraryService
{
    protected $emailSender;

    protected $emailTitle;

    public function __construct(string $emailSender, string $emailTitle)
    {
        $this->emailSender = $emailSender;
        $this->emailTitle = $emailTitle;
    }
}

services:
    App\Acme\TestBundle\ArbitraryService:
        tags: ['arbitrary-services']

Symfony文档告诉我在CompilerPass中查找标记的服务-足够公平：

class AcmeTestCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        $configs = $container->getExtensionConfig('acme_test');

        $taggedServices = $container->findTaggedServiceIds('arbitrary-services');

        // Great - got the tagged service definitions
        // Now going to wire things passed via config into those services (e.g. via binding)

        dump('From CompilerPass:');
        dump($taggedServices);
        dump($configs);
    }
}

在我的完整用例中，我想标记不同的服务目录，使它们根据配置选项接收不同的参数（例如，使用inject.alpha标记的服务根据acme中的配置键获取参数）-

问题是，此时，虽然标记的服务返回正常，但配置尚未处理，因此我们缺少具有默认值的电子邮件标题键：

wobble@pop-os:~/test$ bin/console c:c
"From CompilerPass:"
array:1 [
  "App\Acme\TestBundle\ArbitraryService" => array:1 [
    0 => []
  ]
]
array:1 [
  0 => array:1 [
    "email_sender" => "[e-mail]"
  ]
]

另一方面，如果我检查扩展/加载（）类...

class AcmeTestExtension extends Extension
{
    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);

        $taggedServices = $container->findTaggedServiceIds('arbitrary-services');

        dump('From load()');
        dump($taggedServices);
        dump($config);
    }
}

我会发现我有完全处理过的配置（是的！）但是没有标记服务，因为我可能还太早（因此文档告诉我使用CompilerPass）：

wobble@pop-os:~/test$ bin/console c:c
"From load()"
[]
array:2 [
  "email_sender" => "[e-mail]"
  "email_title" => "Notification email"
]

有人能告诉我是否有可能同时获得处理后的配置和标记的服务吗？谢谢！

我在github repo上推送了重现我问题的测试代码：https://github.com/WubbleWobble/symfony-stack-overflow-1

Answer 1

设法想出一个解决办法。将编译器传递移到扩展类中，然后通过类属性将已处理的配置共享给扩展类：）

class AcmeTestExtension extends Extension implements CompilerPassInterface
{
    /** @var array */
    protected $processedConfig;

    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $this->processedConfig = $this->processConfiguration($configuration, $configs);
    }

    public function process(ContainerBuilder $container)
    {
        $taggedServices = $container->findTaggedServiceIds('arbitrary-services');

        // Great - got the tagged service definitions
        // Now going to wire things passed via config into those services (e.g. via binding)

        dump('From CompilerPass:');
        dump($taggedServices);
        dump($this->processedConfig);
    }
}

"From CompilerPass:"
array:2 [
    "App\Acme\TestBundle\ArbitraryService" => array:1 [
        0 => []
    ]
]
array:2 [
    "email_sender" => "[e-mail]"
    "email_title" => "Notification email"
]