Setting global configurations

At this moment, there is no way of setting global configuration for producers/consumers, but you can use laravel macro functionality to achieve that. Here's an example:

// In a service provider:

\Junges\Kafka\Facades\Kafka::macro('myProducer', function () {
    return $this->publish('broker')
        ->onTopic('my-awesome-topic')
        ->withConfigOption('key', 'value');
});

Now, you can call \Junges\Kafka\Facades\Kafka::myProducer(), which will always apply the configs you defined in your service provider.