removed wicket and tomee, use dropwizard instead. remove wro4j, use gulp instead

src/main/java/com/commafeed/backend/service/FeedService.java

@@ -0,0 +1,32 @@
+package com.commafeed.backend.service;
+
+import java.util.Date;
+
+import lombok.RequiredArgsConstructor;
+
+import org.apache.commons.codec.digest.DigestUtils;
+
+import com.commafeed.backend.dao.FeedDAO;
+import com.commafeed.backend.feed.FeedUtils;
+import com.commafeed.backend.model.Feed;
+
+@RequiredArgsConstructor
+public class FeedService {
+
+	private final FeedDAO feedDAO;
+
+	public synchronized Feed findOrCreate(String url) {
+		String normalized = FeedUtils.normalizeURL(url);
+		Feed feed = feedDAO.findByUrl(normalized);
+		if (feed == null) {
+			feed = new Feed();
+			feed.setUrl(url);
+			feed.setNormalizedUrl(normalized);
+			feed.setNormalizedUrlHash(DigestUtils.sha1Hex(normalized));
+			feed.setDisabledUntil(new Date(0));
+			feedDAO.saveOrUpdate(feed);
+		}
+		return feed;
+	}
+
+}