#25 user-service: sleuth + zipkin

springcloud/user-service/build.gradle

@@ -34,6 +34,9 @@ dependencies {
     implementation 'org.springframework.cloud:spring-cloud-starter-openfeign'
     implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j'
 
+    implementation 'org.springframework.cloud:spring-cloud-starter-sleuth'
+    implementation 'org.springframework.cloud:spring-cloud-starter-zipkin:2.2.3.RELEASE'
+
     implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
 
     implementation group: 'org.modelmapper', name: 'modelmapper', version: '2.4.4'

springcloud/user-service/src/main/java/com/example/userservice/service/UserServiceImpl.java

@@ -74,11 +74,13 @@ public class UserServiceImpl implements UserService {
         /**
          * circuit breaker
          */
+        log.info("Before call orders microservice");
         CircuitBreaker circuitbreaker = circuitBreakerFactory.create("circuitbreaker");
         List<ResponseOrder> orderList = circuitbreaker.run(
                 () -> orderServiceClient.getOrders(userId),
                 throwable -> new ArrayList<>()
         );
+        log.info("After call orders microservice");
 
         userDto.setOrders(orderList);
         return userDto;

springcloud/user-service/src/main/resources/application.yml

@@ -4,6 +4,11 @@ server:
 spring:
   application:
     name: user-service
+  zipkin:
+    base-url: http://127.0.0.1:9411
+  sleuth:
+    sampler:
+      probability: 1.0
 
   rabbitmq:
     host: 127.0.0.1