Use RouterFunction with embedded Eureka server - spring-boot

Question

I'm having an issue getting a simple web app using Spring Reactive's RouterFunction to work with an embedded Eureka server. I tried a couple of things, including using the old way of annotating #RestController which works fine. Furthermore, I tried to removing the Eureka dependency from the POM file after which the RouterFunction endpoint worked fine.
POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<groupId>com.test</groupId>
<artifactId>tds</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!--SPRING-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
</project>
Router, that does not get hit:
#Configuration
public class Router {
#Bean
public RouterFunction<ServerResponse> route(Handler handler) {
return route(GET("/test"), Handler::handle);
}
}
Controller, that get's hit fine:
#RestController
#ResponseStatus(HttpStatus.OK)
public class controller {
#GetMapping("/discovery")
public String getApplication() {
return "test2222";
}
}
Main:
#SpringBootApplication
#EnableEurekaServer
public class DiscoveryApp {
public static void main(String[] args) {
SpringApplication.run(com.test.tds.DiscoveryApp.class, args);
}
}
As stated above, after removing the dependency to Eureka the RouterFunction endpoint works fine.
Does anyone have an idea how to make this work?

Answer 1

Apparently Webflux is currently not supported by Eureka server. It is suggested to use the old spring-boot-starter-web way.
As future reference:
https://github.com/spring-cloud/spring-cloud-netflix/issues/3108#issuecomment-408262981