private static Route loggingErrorHandlingGrpcRoute()

in plugin-tester-java/src/main/java/example/myapp/helloworld/LoggingErrorHandlingGreeterServer.java [79:123]
45 lines of code
3 McCabe index (conditional complexity)

  private static <ServiceImpl> Route loggingErrorHandlingGrpcRoute(
      Function<RequestContext, ServiceImpl> buildImpl,
      Function<ActorSystem, Function<Throwable, Trailers>> errorHandler,
      BiFunction<
              ServiceImpl,
              Function<ActorSystem, Function<Throwable, Trailers>>,
              org.apache.pekko.japi.function.Function<HttpRequest, CompletionStage<HttpResponse>>>
          buildHandler) {
    return logRequest(
        "loggingErrorHandlingGrpcRoute",
        Logging.InfoLevel(),
        () ->
            extractRequestContext(
                ctx -> {
                  Function<ActorSystem, Function<Throwable, Trailers>> loggingErrorHandler =
                      (actorSystem) ->
                          (throwable) -> {
                            Function<Throwable, Trailers> function =
                                errorHandler.apply(actorSystem);
                            Trailers trailers = function.apply(throwable);
                            if (trailers != null) {
                              ctx.getLog()
                                  .error(
                                      throwable, "Grpc failure handled and mapped to " + trailers);
                              return trailers;
                            } else {
                              Trailers internal = new Trailers(Status.INTERNAL);
                              ctx.getLog()
                                  .error(
                                      throwable,
                                      "Grpc failure UNHANDLED and mapped to " + internal);
                              return internal;
                            }
                          };
                  try {
                    ServiceImpl impl = buildImpl.apply(ctx);
                    org.apache.pekko.japi.function.Function<
                            HttpRequest, CompletionStage<HttpResponse>>
                        handler = buildHandler.apply(impl, loggingErrorHandler);
                    return handle(handler);
                  } catch (Exception e) {
                    return failWith(e);
                  }
                }));
  }