Spring Cloud Netflix How do I change user/password for Feign at runtime?

Hi all,

I have the following problem with Feign / Spring Boot.

First I had built an page where the users are logged in. The logindata will send from Angular to my SpringBoot Tomcat. With that logindata, I logged in a WebService and that WebService generate the needed data.

At the moment my servercode includes my credentials hardcodet. With this credentials I ask the Webservice and he answered me. Thats ok. But my feign-client established the authorisation during he startet. And I cant set new credential during runtime. So I always use the harcodet credentials.

@Data
@Configuration
public class MyFeignClient {

  public String user = "name";
  public String password = "passwort";

  @Bean({"mybean"})
  public BasicAuthRequestInterceptor basicAuthRequestInterceptor() {
    return new BasicAuthRequestInterceptor( user, password );
  }
}

@Component
@FeignClient(name = "service", configuration = MyFeignClient.class, url = "http://middleware:8080/web/rest/")
public interface ArticleDataService {

  @GetMapping(path = "")
  List<ArticleData> getAllArticleData();
}

Comment From: ryanjbaxter

So you want to change the credentials while the app is running?

Comment From: RayBausch

Yes, I want it.

Comment From: eacdy

@RayBausch Here goes the demo you want. https://gitee.com/itmuch/spring-cloud-yes/blob/master/ms-consumer-sample/src/main/java/com/itmuch/yes/consumer/feign/config/KeycloakRequestInterceptor.java

B.T.W, if you use thread isolation , you must write a hystrix concurrent strategy. otherwise you will never get the ThreadLocal context. The hystrix concurrent strategy demo code is here: https://gitee.com/itmuch/spring-cloud-yes/tree/master/ms-consumer-sample/src/main/java/com/itmuch/yes/consumer/hystrix/request, I hope it helps.

Comment From: RayBausch

Hallo eacd,

thank you for answering. That's an intresting solution. But unfortunatly the middleware where I asked didn't use keycloak.

Thanks Ray

Comment From: ryanjbaxter

Why doesnt using the configuration server and refresh work for you?

Comment From: eacdy

@RayBausch The point is not keycloak, but the code below:

ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();

Since you get the request, you can put your dynamic username/password into the request , and use the code above to get username/password .

Comment From: spring-projects-issues

Closing due to age of the question. If you would like us to look at this issue, please comment and we will look at re-opening the issue.