Merge pull request #21 from KU-Taverse/feat/prometheus

[Feat] prometheus를 위한 설정 추가

build.gradle

@@ -37,6 +37,10 @@ dependencies {
 	implementation 'org.springframework.cloud:spring-cloud-starter-config'
 	implementation 'org.springframework.cloud:spring-cloud-starter-bootstrap'
 	implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
+	implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j'
+	implementation 'org.springframework.cloud:spring-cloud-starter-openfeign'
+	implementation 'org.springframework.boot:spring-boot-starter-actuator'
+	implementation 'io.micrometer:micrometer-registry-prometheus'
 	compileOnly 'org.projectlombok:lombok'
 	runtimeOnly 'com.h2database:h2'
 	annotationProcessor 'org.projectlombok:lombok'

src/main/java/ku/user/UserApplication.java

@@ -2,8 +2,12 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.cloud.openfeign.EnableFeignClients;
 
 @SpringBootApplication
+@EnableDiscoveryClient
+@EnableFeignClients
 public class UserApplication {
 
 	public static void main(String[] args) {

src/main/java/ku/user/client/GameServiceClient.java

@@ -0,0 +1,11 @@
+package ku.user.client;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+
+@FeignClient(name="game-service")
+public interface GameServiceClient {
+    @GetMapping("/game-service/{userId}/games")
+    String getGameResults(@PathVariable String userId);
+}

src/main/java/ku/user/config/Resilience4JConfig.java

@@ -0,0 +1,35 @@
+package ku.user.config;
+
+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 {
+    @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()
+        );
+    }
+}

src/main/resources/application.yml

@@ -73,6 +73,12 @@ logging:
   level:
     root: info
 
+management:
+  endpoints:
+    web:
+      exposure:
+        include: prometheus
+
 token:
   expiration_time: 86400000
   secret: ${SECRET}