configure RestClient timeouts

Signed-off-by: Peter Siegmund <developer@mars3142.org>

src/main/java/dev/mars3142/fhq/timezone_service/config/AppConfig.java

@@ -1,10 +1,15 @@
 package dev.mars3142.fhq.timezone_service.config;
 
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+import lombok.val;
 import org.springframework.cache.CacheManager;
 import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.cache.concurrent.ConcurrentMapCacheManager;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.ClientHttpRequestFactory;
+import org.springframework.http.client.SimpleClientHttpRequestFactory;
 import org.springframework.web.client.RestClient;
 
 @Configuration
@@ -12,8 +17,18 @@ import org.springframework.web.client.RestClient;
 public class AppConfig {
 
   @Bean
-  public RestClient.Builder restClientBuilder() {
+  public ClientHttpRequestFactory getClientHttpRequestFactory() {
-    return RestClient.builder();
+    val requestFactory = new SimpleClientHttpRequestFactory();
+    requestFactory.setConnectTimeout(Duration.of(6, ChronoUnit.SECONDS));
+    requestFactory.setReadTimeout(Duration.of(30, ChronoUnit.SECONDS));
+    return requestFactory;
+  }
+
+  @Bean
+  public RestClient.Builder restClientBuilder(ClientHttpRequestFactory requestFactory) {
+    return RestClient
+        .builder()
+        .requestFactory(requestFactory);
   }
 
   @Bean