DevOps lecture: Spring Boot reactive router & handler code

HelloRouter.java

import org.springframework.context.annotation.Bean;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.server.*;
import reactor.core.publisher.Mono;

@Component
public class HelloRouter {

    public Mono<ServerResponse> hello(ServerRequest serverRequest) {
        return ServerResponse
                .ok()
                .contentType(MediaType.TEXT_PLAIN)
                .body(BodyInserters.fromValue("Hello World"));
    }

    @Bean
    public RouterFunction<ServerResponse> route() {
        return RouterFunctions.route(
                RequestPredicates.GET("/hello").and(RequestPredicates.accept(MediaType.TEXT_PLAIN)),
                serverRequest -> hello(serverRequest)
        );
    }
}