framework:
    messenger:
        failure_transport: failed

        transports:
            # https://symfony.com/doc/current/messenger.html#transport-configuration
            async:
                dsn: '%env(MESSENGER_TRANSPORT_DSN)%'
                retry_strategy:
                    max_retries: 3
                    multiplier: 2
            failed: 'doctrine://default?queue_name=failed'
            # sync: 'sync://'

        default_bus: messenger.bus.default

        buses:
            messenger.bus.default: []

        routing:
            # Mail is deliberately NOT routed to async. Nothing starts a worker on the server --
            # deploy.php only stops them -- so a queued SendEmailMessage would be written to
            # messenger_messages and stay there, with no error anywhere and nobody notified.
            # Sending happens in the request instead; App\Email\Mailer catches a transport
            # failure so it can never fail the booking that triggered it. Route it back here
            # once a `messenger:consume async` worker actually runs.
            # Symfony\Component\Mailer\Messenger\SendEmailMessage: async
            Symfony\Component\Notifier\Message\ChatMessage: async
            Symfony\Component\Notifier\Message\SmsMessage: async

            # Route your messages to the transports
            # 'App\Message\YourMessage': async