7mind/izumi

@redvasily
Aha, I get it now. Distage auto-factories unfortunately aren't equivalent to guice providers since they always use default class constructor, not the constructor specified in DI – we actually ended up never using auto-factories, so didn’t think of such a case.
There’s no built-in way to summon the known constructor of something, except by manually querying the structure to find it there:

class MyClass(thisGraph: LocatorRef) {
  val kafkaConstructor = thisGraph.get.plan.collect {
    // only IFF kafka is bound with a lambda as above
    case CallProvider(key, func, _) if key == DIKey.get[KafkaConsumer[String, String]].named(“transactional”) =>
      ProviderMagnet(func.provider)
  }.steps.head

  val newConsumer = thisGraph.get.run(kafkaConstructor)
}

You may open a GitHub issue or PR for this functionality

In real code i’d just make a manual factory for this case:

class KafkaFactory(
  propTransactional: Map[String, AnyRef] @Id(“transactional”),
  propNonTransactional: Map[String, AnyRef] @Id(“nonTransactional”),
) {
  def transactional: KafkaConsumer[String, String] = mkConsumer(propTransactional)
  def nonTransactional: KafkaConsumer[String, String] = mkConsumer(propNonTransactional)

  private def mkConsumer(props: Map[String, String]): KafkaConsumer[String, String]
}