feat: restTemplate 재시도 로직 추가

Author: rjswjddn

build.gradle

@@ -63,6 +63,7 @@ dependencies {
     // caffeine
     implementation 'com.github.ben-manes.caffeine:caffeine'
 
+    implementation 'org.springframework.retry:spring-retry:2.0.12'
 }
 
 tasks.named('test') {

src/main/java/com/oronaminc/join/global/config/RestTemplateConfig.java

@@ -0,0 +1,38 @@
+package com.oronaminc.join.global.config;
+
+import java.time.Duration;
+
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.ClientHttpRequestInterceptor;
+import org.springframework.retry.policy.SimpleRetryPolicy;
+import org.springframework.retry.support.RetryTemplate;
+import org.springframework.web.client.RestTemplate;
+
+@Configuration
+class RestTemplateConfig {
+
+    @Bean
+    public RestTemplate restTemplate() {
+        return new RestTemplateBuilder()
+                .connectTimeout(Duration.ofSeconds(5))
+                .readTimeout(Duration.ofSeconds(5))
+                .additionalInterceptors(clientHttpRequestInterceptor())
+                .build();
+    }
+
+    // 3번 재시도
+    public ClientHttpRequestInterceptor clientHttpRequestInterceptor() {
+        return (request, body, execution) -> {
+            RetryTemplate retryTemplate = new RetryTemplate();
+            retryTemplate.setRetryPolicy(new SimpleRetryPolicy(3));
+            try {
+                return retryTemplate.execute(context -> execution.execute(request, body));
+            } catch (Throwable throwable) {
+                throw new RuntimeException(throwable);
+            }
+        };
+    }
+
+}