在每个请求上实例化Symfony服务

我有一个名为TennantContext的服务，它处理所有与租户相关的功能，包括跟踪用户当前活动的租户

我的印象是，一旦实例化，服务就再也不会实例化了？我说得对吗

我有以下问题：

我正在将TenantContact服务注入多个控制器和事件触发器，但每次注入时都会再次实例化，例如，构造函数正在再次运行，服务中所有以前的值都已重置：

租户上下文：

class TenantContext
{
    private $tenant;
    private $isInitialized = false;
    ...
    ...
    public function __construct(
        Security $security,
        LoggerInterface $logger,
        UserService $userService,
        EntityManagerInterface $entityManager
    )
    {
        $this->logger = $logger;
        $this->logger->info("YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY: Tenant instantiated");
        ...
        ...
    }

这首先使用my LoginEventListener进行实例化，成功登录后，my LoginEventListener将在上下文中设置租户：

class LoginListener
{
    /**
     * 
     * @var EntityManagerInterface
     */
    private $em;

    /**
     * 
     * @var TenantContext
     */
    private $tenantContext;

    /**
     * 
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(
        EntityManagerInterface $em,
        LoggerInterface $logger,
        TenantContext $tenantContext
        )
    {
        $this->em = $em;
        $this->logger = $logger;
        $this->tenantContext = $tenantContext;
    }

    public function onSecurityInteractiveLogin(InteractiveLoginEvent $event)
    {
        $this->logger->info("------------------------------------- onSecurityInteractiveLogin");
        // Get the User entity.
        /**
         * 
         * @var User $user
         */
        $user = $event->getAuthenticationToken()->getUser();
        $this->tenantContext->initialize($user->getTenant());
    }
}

但是，当我导航到另一个页面时（使用例如在Twig中的路由：{{path（'dashboard'）}），这是非常有效的

日志：

我可以从再次调用构造函数的日志中看到，每次请求都会发生这种情况

如何使TenantContext成为整个会话的一个实例

提前谢谢

编辑：

---

这似乎也发生在其他服务上，我在我拥有的另一个服务上添加了一些日志记录，它执行相同的操作。我没有注意到这一点，因为我的所有服务都不包含任何数据，只包含函数。

根据评论，我现在意识到我对服务的理解是错误的，它们在每个请求中都被实例化

---

因此，为了解决我的问题，我将在会话中存储hte ID，并在需要时使用会话中的ID检索数据。

php从请求开始一直存在到请求结束。请求之间不保留任何内容（当然，不包括写入db或硬盘或其他持久性层的内容，例如存储在会话中的内容）（主要是序列化的内容）每个请求都会产生一个新的进程。PHP与大多数其他语言（例如Python或Java）不同。PHP中有一些方法可以通过重复使用相同的过程来避免这种情况。请看一看或了解一下。使每个请求之间的数据保持一致的一种简单方法是将其存储在数据库或某些缓存机制（如redis或memcached）中。更清楚的是，这不是Symfony或PHP作为一种语言的限制。这主要是PHP的使用方式在像nginx或apache这样的大多数web服务器中，每个请求都会产生一个新的工作进程。谢谢大家，这是有道理的。我误解了文档。我只需要在会话中保存Id，这就是我所需要的。

Jan 10 14:38:11 |INFO | PHP    Matched route "dashboard".
Jan 10 14:38:11 |DEBUG| PHP    Read existing security token from the session.
Jan 10 14:38:11 |DEBUG| PHP    SELECT t0.id AS id_1, t0.first_name AS first_name_2, t0.last_name AS last_name_3, t0.email AS email_4, t0.password AS password_5, t0.status AS status_6, t0.guid AS guid_7, t0.created_date AS created_date_8, t0.modif
0, t0.user_type AS user_type_11, t0.roles AS roles_12, t0.created_by_id AS created_by_id_13, t0.modified_by_id AS modified_by_id_14 FROM user t0 WHERE t0.id = ?
Jan 10 14:38:11 |DEBUG| PHP    User was reloaded from a user provider.
Jan 10 14:38:11 |DEBUG| PHP    Checking for guard authentication credentials.
Jan 10 14:38:11 |DEBUG| PHP    Checking support on guard authenticator.
Jan 10 14:38:11 |DEBUG| PHP    Guard authenticator does not support the request.
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::configure".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ValidateRequestListener::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Nelmio\CorsBundle\EventListener\CorsListener::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::setDefaultLocale".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\RouterListener::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Bundle\FrameworkBundle\EventListener\ResolveControllerNameSubscriber::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\Filter\QueryParameterValidateListener::onKernelRequest".
Jan 10 14:38:11 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleAwareListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::configureLogoutUrlGenerator".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\EventListener\AddFormatListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\EventListener\ReadListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\Security\EventListener\DenyAccessListener::onSecurity".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\EventListener\DeserializeListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\Security\EventListener\DenyAccessListener::onSecurityPostDenormalize".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "ApiPlatform\Core\Bridge\Symfony\Bundle\EventListener\SwaggerUiListener::onKernelRequest".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.request" to listener "Knp\Bundle\PaginatorBundle\Subscriber\SlidingPaginationSubscriber::onKernelRequest".
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The "templating.locator" service is deprecated since Symfony 4.3 and will be removed in 5.0.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\Loader\TemplateLocator class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The "templating.name_parser" service is deprecated since Symfony 4.3 and will be removed in 5.0.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector::onKernelController".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Symfony\Component\HttpKernel\DataCollector\RequestDataCollector::onKernelController".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener::onKernelController".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener::onKernelController".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\HttpCacheListener::onKernelController".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelController".
Jan 10 14:38:12 |INFO | PHP    YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY: Tenant instantiated
Jan 10 14:38:12 |DEBUG| PHP    Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\SecurityListener::onKernelControllerArguments".
Jan 10 14:38:12 |DEBUG| PHP    Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\IsGrantedListener::onKernelControllerArguments".
Jan 10 14:38:12 |INFO | PHP    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX: Reinitializing tenant
Jan 10 14:38:12 |DEBUG| PHP    SELECT t0.id AS id_1, t0.default_org AS default_org_2, t0.user_id AS user_id_3, t0.organization_id AS organization_id_4 FROM user_organization t0 WHERE t0.user_id = ?
Jan 10 14:38:12 |INFO | PHP    ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ: Tenant initialized with id: 5
Jan 10 14:38:12 |INFO | PHP    User Deprecated: Using the "templating" service is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The Symfony\Bridge\Twig\TwigEngine class is deprecated since version 4.3 and will be removed in 5.0; use \Twig\Environment instead.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\EngineInterface interface is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.
Jan 10 14:38:12 |INFO | PHP    User Deprecated: The Symfony\Bundle\TwigBundle\TwigEngine class is deprecated since version 4.3 and will be removed in 5.0; use \Twig\Environment instead.