GetUsers.groovy

@Component
@Log4j
@CompileStatic
class GetUsers implements Handler {

  @Autowired
  private UserRepository userRepository

  @Override
  boolean route(final Request request) {
    request.resourcePath() == '/users' && request.httpMethod() == 'GET'
  }

  @Override
  Response respond(final Request request) {
    def allCustomers = userRepository.findAll()
    Response.builder()
        .statusCode(200)
        .body(JsonOutput.prettyPrint(JsonOutput.toJson(allCustomers)))
        .build()
  }
}