Resilience4j

.gitignore

@@ -24,6 +24,7 @@ bin/
 out/
 !**/src/main/**/out/
 !**/src/test/**/out/
+.idea
 
 ### NetBeans ###
 /nbproject/private/

d-order-service/build.gradle

@@ -7,6 +7,8 @@ dependencies {
     implementation 'org.springframework.cloud:spring-cloud-starter-config'
     implementation 'org.springframework.cloud:spring-cloud-starter-bootstrap:3.1.3'
     implementation 'org.springframework.kafka:spring-kafka:2.9.0'  //카프카
+    implementation 'org.springframework.cloud:spring-cloud-starter-sleuth:3.1.3'  //sleuth
+    implementation 'org.springframework.cloud:spring-cloud-starter-zipkin:2.2.8.RELEASE' //zipkin
 
 
     runtimeOnly 'com.h2database:h2'   //runtime scope로 실행

d-order-service/src/main/java/com/example/dorderservice/controller/OrderController.java

@@ -8,6 +8,7 @@
 import com.example.dorderservice.vo.RequestOrder;
 import com.example.dorderservice.vo.ResponseOrder;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.modelmapper.ModelMapper;
 import org.springframework.core.env.Environment;
 import org.springframework.http.HttpStatus;
@@ -17,6 +18,7 @@
 import java.util.List;
 import java.util.UUID;
 
+@Slf4j
 @RequiredArgsConstructor
 @RestController
 @RequestMapping("/")
@@ -42,31 +44,40 @@ public String status() {
     public ResponseEntity<ResponseOrder> addOrder(@PathVariable String userId
             , @RequestBody RequestOrder requestOrder) {
         requestOrder.setUserId(userId);
-
+        log.info("Before retrieved added microservice");
         OrderDto orderDto = modelMapper.map(requestOrder , OrderDto.class);
         orderDto.setOrderId(UUID.randomUUID().toString());
         orderDto.setTotalPrice(orderDto.getQty() * orderDto.getUnitPrice());
 
         //catalog 정보 업데이트
-        kafkaCatalogProducerService.send("example-catalog-topic" , orderDto);
+//        kafkaCatalogProducerService.send("example-catalog-topic" , orderDto);
 
-        kafkaOrderProducerService.send("orders" ,orderDto);
+        //order 정보 kafka로 업데이트
+//        kafkaOrderProducerService.send("orders" ,orderDto);
 
         /* jpa 이용하는 코드*/
-       // orderService.createOrder(orderDto);
-
-
+        orderService.createOrder(orderDto);
 
 
         ResponseOrder responseOrder = modelMapper.map(orderDto , ResponseOrder.class );
-
+        log.info("After retrieved added microservice");
         return ResponseEntity.status(HttpStatus.CREATED).body(responseOrder);
     }
 
     //주문 확인
     @GetMapping("/{userId}/orders")
-    public ResponseEntity< List<ResponseOrder>> findOrder(@PathVariable String userId) {
+    public ResponseEntity< List<ResponseOrder>> findOrder(@PathVariable String userId)  throws Exception{
+        log.info("Before retrieved orders microservice");
         List<ResponseOrder> responseOrder = orderService.findOrdersByUserId(userId);
+        log.info("After retrieved orders microservice");
+
+        try {
+
+            Thread.sleep(1000);
+            throw new Exception("장애발생");
+        } catch (InterruptedException e) {
+            log.warn(e.getMessage());
+        }
         return ResponseEntity.status(HttpStatus.ACCEPTED).body(responseOrder);
     }
 

d-order-service/src/main/java/com/example/dorderservice/kafka/KafkaCatalogProducerService.java

@@ -13,6 +13,8 @@
 @Service
 public class KafkaCatalogProducerService {
 
+
+    //order service => catalog service로 데이터 전송하기
     private final KafkaTemplate kafkaTemplate;
     private final ObjectMapper objectMapper;
 

d-order-service/src/main/java/com/example/dorderservice/kafka/KafkaOrderProducerService.java

@@ -15,6 +15,7 @@
 @Service
 public class KafkaOrderProducerService {
 
+    //order service => postgre 로 데이터 전송
     private final KafkaTemplate kafkaTemplate;
     private final ObjectMapper objectMapper;
 

d-order-service/src/main/resources/application.yml

@@ -1,24 +1,16 @@
-#server:
-#  port: 0
-
 spring:
   application:
     name: order-service
-#  h2:
-#    console:
-#      enabled: true
-#      settings:
-#        web-allow-others: true
-#      path: /h2-console
+  zipkin:
+    base-url: http://127.0.0.1:9411
+    compression:
+      enabled: true
+  sleuth:
+    sampler:
+      probability: 1.0   #로그 보내는 확률 1.0 => 100% 다 보내기
   jpa:
     hibernate:
       ddl-auto: update
-#  datasource:
-#    url: jdbc:postgresql://spring-boot-study.cchzqclxtrke.ap-northeast-2.rds.amazonaws.com:5432/postgres
-#    username: jylim
-#    password: "!Tjs24fkdlwm"
-#    hikari:
-#      schema: msa_study #스키마 따로 지정하기옵션
 
 eureka:
   instance:

d-user-service/build.gradle

@@ -21,8 +21,10 @@ dependencies {
    // implementation 'org.springframework.cloud:spring-cloud-starter-bus-amqp:3.1.2'
 
     //openfeign
-    implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.1.3'
-    implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j:2.1.3'
+    implementation 'org.springframework.cloud:spring-cloud-starter-openfeign:3.1.3'  //open feign
+    implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j:2.1.3' //resilience4j
+    implementation 'org.springframework.cloud:spring-cloud-starter-sleuth:3.1.3'  //sleuth
+    implementation 'org.springframework.cloud:spring-cloud-starter-zipkin:2.2.8.RELEASE' //zipkin
 
     implementation 'org.postgresql:postgresql:42.3.6'
 

d-user-service/src/main/java/com/example/duserservice/config/Resilience4JConfig.java

@@ -1,22 +1,47 @@
 package com.example.duserservice.config;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.github.resilience4j.circuitbreaker.CircuitBreakerConfig;
+import io.github.resilience4j.timelimiter.TimeLimiterConfig;
 import org.springframework.cloud.circuitbreaker.resilience4j.Resilience4JCircuitBreakerFactory;
 import org.springframework.cloud.circuitbreaker.resilience4j.Resilience4JConfigBuilder;
 import org.springframework.cloud.client.circuitbreaker.Customizer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import java.time.Duration;
+
 
 @Configuration
 public class Resilience4JConfig {
 
+
+    //얘를 만들게 되면 CircuitBreakerFactory에 자동 구현됨.
+    //Customizer :
+    @Bean
+    public Customizer<Resilience4JCircuitBreakerFactory> globalCustomConfiguration() {
+
+        CircuitBreakerConfig circuitBreakerConfig = CircuitBreakerConfig.custom()
+                .failureRateThreshold(4)
+                .waitDurationInOpenState(Duration.ofMillis(1000))
+                .slidingWindowType(CircuitBreakerConfig.SlidingWindowType.COUNT_BASED)
+                .slidingWindowSize(2)
+                .build();
+
+        TimeLimiterConfig timeLimiterConfig = TimeLimiterConfig.custom()
+                .timeoutDuration(Duration.ofSeconds(4))
+                .build();
+
+        return factory -> factory.configureDefault(id -> new Resilience4JConfigBuilder(id)
+                .timeLimiterConfig(timeLimiterConfig)
+                .circuitBreakerConfig(circuitBreakerConfig)
+                .build());
+
+    }
+
 //    @Bean
-//    public Customizer<Resilience4JCircuitBreakerFactory> globalCustomConfiguration() {
-//        return factory -> factory.configureDefault(id->new Resilience4JConfigBuilder(id)
-//                .timeLimiterConfig()
-//                .circuitBreakerConfig(circuitBreakerConfig)
-//                .build());
-//
+//    public Customizer<ObjectMapper> objectMapper() {
+//        return factory -> new ObjectMapper();
 //    }
 
 }

d-user-service/src/main/java/com/example/duserservice/service/UserServiceImpl.java

@@ -81,12 +81,14 @@ public UserDto findUserByUserId(String userId) {
 
         UserDto userDto = modelMapper.map(userEntity, UserDto.class);
 
-
+        log.info("Before call orders microservice");
         CircuitBreaker circuitBreaker = circuitBreakerFactory.create("circuitBreaker");  //서킷 브레이커 이름
 
         List<ResponseOrder> orderList = circuitBreaker.run(()-> orderServiceClient.getOrders(userId) ,
                 throwable -> new ArrayList<>());
 
+        log.info("After call orders microservice");
+
         userDto.setOrders(orderList);
 
         return userDto;

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

@@ -1,41 +1,17 @@
-#server:
-#  port: 0 # port번호 0 : 랜덤 포트를 사용하겠다는 의미
-#  #port: 9001 #클라이언트 포트
 spring:
   application:
     name: user-service
   jpa:
     hibernate:
       ddl-auto: update
-#  datasource:
-#    url: jdbc:postgresql://spring-boot-study.cchzqclxtrke.ap-northeast-2.rds.amazonaws.com:5432/postgres
-#    username: jylim
-#    password: "!Tjs24fkdlwm"
-#    hikari:
-#      schema: msa_study #스키마 따로 지정하기옵션
+  zipkin:
+    base-url: http://127.0.0.1:9411
+    compression:
+      enabled: true
+  sleuth:
+    sampler:
+      probability: 1.0   #로그 보내는 확률 1.0 => 100% 다 보내기
 
-#spring:
-#  application:
-#    name: user-service #각각 마이크로 서비스마다 부여할 고유 아이디(중복 불가)  => 유레카에 대문자로 등록됨. (대소문자 구분x)
-#  h2:
-#    console:
-#      enabled: true
-#      settings:
-#        web-allow-others: true
-#      path: /h2-console
-#  datasource:  # 암호화 후 config server에 옮김
-#    url: jdbc:h2:mem:testdb
-#    driver-class-name: org.h2.Driver
-
- # rabbitmq 정보
-
-#  rabbitmq: #호스트 정보 기술 => ms는 클라이언트
-#    host: 127.0.0.1
-#    port: 5672 # 15672 는 rabbit mq 관리 페이지 접속용
-#    username: guest
-#    password: guest
-
-#유레카 클라이언트 역할 기능 켜기
 eureka:
   instance:
     instance-id: ${spring.application.name}:${spring.application.instance_id:${random.value}} #인스턴스 id 부여해주기 (포트가 같을 때)
@@ -45,7 +21,6 @@ eureka:
     service-url:
       defaultZone: http://127.0.0.1:8761/eureka  #유레카 서버의 위치를 등록함
 
-
 logging:
   level:
     com.example.duserservice: INFO