Feat: 외부 API 핸들러 및 리졸버 추가 (#65)

src/main/java/beforespring/socialfeed/content/service/ExternalApiHandler.java

@@ -0,0 +1,11 @@
+package beforespring.socialfeed.content.service;
+
+import beforespring.socialfeed.content.domain.ContentSourceType;
+/**
+ * 외부 API 핸들러를 정의하는 인터페이스
+ */
+public interface ExternalApiHandler {
+    ContentSourceType getSourceType();
+    void like(String contentSourceId);
+    void share(String contentSourceId);
+}

src/main/java/beforespring/socialfeed/content/service/ExternalApiHandlerResolver.java

@@ -0,0 +1,29 @@
+package beforespring.socialfeed.content.service;
+
+import beforespring.socialfeed.content.domain.ContentSourceType;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Component
+public class ExternalApiHandlerResolver {
+    private final Map<ContentSourceType, ExternalApiHandler> handlerMap = new HashMap<>();
+
+    @Autowired
+    public ExternalApiHandlerResolver(List<ExternalApiHandler> handlers) {
+        handlers.forEach(handler -> handlerMap.put(handler.getSourceType(), handler));
+    }
+    /**
+     * 핸들러를 검색하여 반환.
+     *
+     * @param sourceType sourceType
+     * @return 해당 sourceType 에 대응하는 핸들러
+     */
+
+    public ExternalApiHandler resolveHandler(ContentSourceType sourceType) {
+        return handlerMap.get(sourceType);
+    }
+}

src/main/java/beforespring/socialfeed/content/service/FacebookApiHandler.java

@@ -0,0 +1,24 @@
+package beforespring.socialfeed.content.service;
+
+import beforespring.socialfeed.content.domain.ContentSourceType;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+@Component
+@Slf4j
+public class FacebookApiHandler implements ExternalApiHandler{
+    @Override
+    public ContentSourceType getSourceType() {
+        return ContentSourceType.FACEBOOK;
+    }
+
+    @Override
+    public void like(String contentSourceId) {
+        log.info("Facebook like contentSourceId: {}", contentSourceId);
+    }
+
+    @Override
+    public void share(String contentSourceId) {
+        log.info("Facebook share contentSourceId: {}", contentSourceId);
+    }
+}