alexcheng1982

keytool -keystore mykey.jks -alias mykey -keyalg RSA -keysize 2048 -sigalg SHA256withRSA -genkey -validity 3650

alexcheng1982

package calculator

actual fun log(msg: String) = console.log(msg)

fun main(args: Array<String>) {
    Calculator.add(1, 2)
    Calculator.subtract(1, 2)
}

alexcheng1982

package calculator

actual fun log(msg: String) = System.out.println(msg)

fun main(args: Array<String>) {
    Calculator.add(1, 2)
    Calculator.subtract(1, 2)
}

alexcheng1982

package calculator

expect fun log(msg: String)

object Calculator {
    fun add(x: Int, y: Int): Int {
        log("add -> $x $y")
        return x + y
    }

alexcheng1982

id:0
event:random
data:751025203
 
id:1
event:random
data:-1591883873
 
id:2
event:random

alexcheng1982

import org.springframework.http.codec.ServerSentEvent;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Flux;
import reactor.util.function.Tuples;

import java.time.Duration;
import java.util.concurrent.ThreadLocalRandom;

alexcheng1982

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
public class FunctionalStarterApplicationTests {
  @Autowired
  private TestRestTemplate restTemplate;
  @Test
  public void calculate() {
    assertThat(doCalculate("add", "3", "5")).isEqualTo("8");
    assertThat(doCalculate("subtract", "3", "5")).isEqualTo("-2");
    assertThat(doCalculate("multiply", "3", "5")).isEqualTo("15");

alexcheng1982

@Configuration
public class Config {
  @Bean
  @Autowired
  public RouterFunction<ServerResponse> routerFunction(final CalculatorHandler calculatorHandler) {
    return RouterFunctions.route(RequestPredicates.path("/calculator"), request ->
        request.queryParam("operator").map(operator ->
            Mono.justOrEmpty(
                ReflectionUtils.findMethod(CalculatorHandler.class, operator, ServerRequest.class))
                .flatMap(method -> (Mono<ServerResponse>) ReflectionUtils

alexcheng1982

@Component
public class CalculatorHandler {
  public Mono<ServerResponse> add(final ServerRequest request) {
    return calculate(request, (v1, v2) -> v1 + v2);
  }
  public Mono<ServerResponse> subtract(final ServerRequest request) {
    return calculate(request, (v1, v2) -> v1 - v2);
  }
  public Mono<ServerResponse> multiply(final ServerRequest request) {
    return calculate(request, (v1, v2) -> v1 * v2);

alexcheng1982

FROM phusion/baseimage

CMD ["/sbin/my_init"]

RUN apt-get update && apt-get install -y --no-install-recommends \
		bzip2 \
		unzip \
		xz-utils \
	&& rm -rf /var/lib/apt/lists/*