.

src/main/java/com/bookinfo/client/RatingsClient.java

-package com.bookinfo.client;
-
-
-public interface RatingsClient {
-    Object getRatings(int idProduct);
-}

src/main/java/com/bookinfo/client/ReviewsClient.java

@@ -3,5 +3,5 @@ package com.bookinfo.client;
 import java.util.List;
 
 public interface ReviewsClient {
-    List<Object> getReviews(int idProduct);
+    List<Object> getReviews(int idProduct, String endUser);
 }

src/main/java/com/bookinfo/client/impl/RatingsClientImpl.java

-package com.bookinfo.client.impl;
-
-import com.bookinfo.client.RatingsClient;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.stereotype.Service;
-import org.springframework.web.client.RestTemplate;
-
-@Service
-public class RatingsClientImpl implements RatingsClient {
-    @Autowired
-    private RestTemplate restTemplate;
-    @Value("${ratingsHostname}")
-    private String ratingsHostname;
-
-    @Override
-    public Object getRatings(int idProduct) {
-        return null;
-    }
-}

src/main/java/com/bookinfo/client/impl/ReviewsClientImpl.java

@@ -3,6 +3,9 @@ package com.bookinfo.client.impl;
 import com.bookinfo.client.ReviewsClient;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.web.client.RestClientException;
@@ -20,8 +23,16 @@ public class ReviewsClientImpl implements ReviewsClient {
     private String reviewsHostname;
 
     @Override
-    public List<Object> getReviews(int idProduct) throws RestClientException {
-        ResponseEntity<Object[]> responseEntity = restTemplate.getForEntity(reviewsHostname + "/reviews/" + idProduct, Object[].class);
+    public List<Object> getReviews(int idProduct, String endUser) throws RestClientException {
+
+        // build http headers
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("end-user",endUser);
+
+        HttpEntity<String> stringHttpEntity = new HttpEntity<>(headers);
+
+        ResponseEntity<Object[]> responseEntity = restTemplate.exchange(reviewsHostname + "/reviews/" + idProduct, HttpMethod.GET, stringHttpEntity, Object[].class);
+
         Object[] reviews = responseEntity.getBody();
         return (reviews !=null)? Arrays.asList(reviews):new ArrayList<>();
     }

src/main/java/com/bookinfo/rest/ProductPageController.java

 package com.bookinfo.rest;
 
 import com.bookinfo.client.DetailsClient;
-import com.bookinfo.client.RatingsClient;
 import com.bookinfo.client.ReviewsClient;
 import com.bookinfo.entity.Product;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -23,8 +22,6 @@ public class ProductPageController {
     private DetailsClient detailsClient;
     @Autowired
     private ReviewsClient reviewsClient;
-    @Autowired
-    private RatingsClient ratingsClient;
 
 
     @GetMapping("/health")