Bundle的services.yaml中的Symfony 4 _instanceof

Question

I have a bundle which has interface Optimax\\HealthCheckBundle\\Service\\HealthInterface I need set tags to all services which implement this interface. I do it with the following directive:

_instanceof:
  Optimax\HealthCheckBundle\Service\HealthInterface:
    tags: ['health.service']

It works fine when I put this directive into config/services.yaml . But if I put this code into my bundle's config (which required via composer) vendor/optimax/health-check/src/Resources/config/services.yaml it doesn't work. I don't want copy-paste this directive into services.yaml every time when I require this bundle to a new project.

How can I move this directive into services.yaml which is in my Bundle's directory or at least into another file in config/packages folder of the project?

Answer 1

Did you try auto tagging all services with this interface in your Bundle extension like this:

$container->registerForAutoconfiguration(CustomInterface::class)
     ->addTag('app.custom_tag')
;

Taken from the Symfony docs: https://symfony.com/doc/current/service_container/tags.html

Answer 2

To expand on the issue for others.

_instanceof functions identically to the _defaults definition. In that the _instanceof definition only applies to the file it is used in.

This prevents third-party bundle definitions from affecting your entire application with definitions like:

_defaults: 
    public: true
    autowire: false

_instanceof:
    Psr\Log\LoggerAwareInterface:
        - method: setLogger
          arguments:
              - '@custom_logger'
        tags:
            - { name: monologer.log, channel: 'custom_channel' }

Therefor if the service you are attempting to tag with _instanceof is not declared in the same services.yml file the tag will not be added.

To tag services that implements an Interface in the entire application, you would need to use the method provided by @Jeroen