Service Container Troubleshooting and FAQs

FAQs:

Should I override or decorate services in my Project?

When overriding a Symfony Service, you replace the whole service definition in such a way that the original service is lost. Although there might be use-cases for such drastic modification, whenever you just need to extend the existing functionality, you should use the less destructive Decorator Pattern instead

Cane I reconfigure a public service as private in my Project?

Technically yes, but it’s better to avoid changing visibility of the service from public to private. Such configuration modification will make this service inaccessible via the Service Locator pattern E.g. this code in one of the modules:

ContainerFacade::get(\OxidEsales\Internal\OxidPublicService::class)->doSomething();

that was working before, will start throwing a ServiceNotFound exception after the change!

Troubleshooting guide:

I deactivated my module in the Admin and want to refresh the application caches 

Problem:: Programmatic configuration change.
Description:: Every critical configuration change in the application triggers its full Container Cache rebuild automatically.
Solution:: No additional user interaction is normally needed.

I changed var/configuration YAML manually and want to refresh the application caches 

Problem:

Manual configuration change.

Description:

Despite the configuration change, the application (Service Container) is still functional.

Solution:

Cache can be cleared manually by executing the following command:

vendor/bin/oe-console oe:cache:clear

I’ve made some manual configuration change and now oe:cache:clear console command is broken (an error occurs)

Problem:

Application malfunction.