Risky Operations

Compare different styles to handle calls to external services (aka Risky Operations™).

This is not production code

It is meant as a starting point for discussions. Play around with the code and talk to team members how it makes you feel.

RiskyService

Offers four different methods, which return "nasty" results:

• null
• throw a RuntimeException
• java.util.Optional.empty()
• io.vavr.control.Either.right()

OurService

Needs to handle the results, transform the data and pass it along to its client.

OurServiceTest

Checks that nasty results haven been handled and repackaged properly.