Pick the destination for a given message.
Pick the destination for a given message. Normally it picks one of the
passed routees, but in the end it is up to the implementation to
return whatever Routee to use for sending a specific message.
When implemented from Java it can be good to know that
routees.apply(index) can be used to get an element
from the IndexedSeq.
(routingLogic: StringAdd).self
(routingLogic: StringFormat).self
(routingLogic: ArrowAssoc[RoutingLogic]).x
(Since version 2.10.0) Use leftOfArrow instead
(routingLogic: Ensuring[RoutingLogic]).x
(Since version 2.10.0) Use resultOfEnsuring instead
The interface of the routing logic that is used in a Router to select destination routed messages.
The implementation must be thread safe.