[Messenger] Abstract handler #31417
Description
Symfony version(s) affected: ^4.2
Description
Currently, MessengerPass will compile the handler's definition that has class option. This option is needed to guess the handler's method and handles options.
If we use parent without class, then we get exception fromMessengerPass.
Proposition
If Definition implements ChildDefinition then we should get information from parent class.
Example
For global_bus will initialize correctly.
For command_bus will throw exception:
Fatal error: Uncaught Symfony\Component\DependencyInjection\Exception\RuntimeException: Invalid service "command_bus": class "" does not exist. in /app/vendor/symfony/messenger/DependencyInjection/MessengerPass.php:85
services.yaml
Symfony\Component\Messenger\MessageBus:
abstract: true
public: true
class: Symfony\Component\Messenger\MessageBus
arguments:
- [] # Filled by MessengerPass
global_bus:
parent: Symfony\Component\Messenger\MessageBus
tags:
- { name: 'messenger.bus' }
# Due to MessengerPass, service marked as handler can't be abstract
command_bus:
parent: Symfony\Component\Messenger\MessageBus
tags:
- { name: 'messenger.bus'}
- { name: 'messenger.message_handler', handles: 'Infrastructure\Command\Command', method: 'dispatch', bus: 'global_bus'}