Migrated logging to SLF4J

pom.xml

@@ -78,6 +78,15 @@
 			<artifactId>persistence-api</artifactId>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>ch.qos.logback</groupId>
+			<artifactId>logback-classic</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>

src/main/java/org/rometools/certiorem/hub/Hub.java

@@ -25,8 +25,6 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.HttpStatusCodeException;
 import org.rometools.certiorem.hub.Notifier.SubscriptionSummaryCallback;
@@ -35,17 +33,21 @@ import org.rometools.certiorem.hub.data.HubDAO;
 import org.rometools.certiorem.hub.data.Subscriber;
 import org.rometools.certiorem.hub.data.SubscriptionSummary;
 import org.rometools.fetcher.FeedFetcher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.sun.syndication.feed.synd.SyndFeed;
 
 /**
- * The basic business logic controller for the Hub implementation. It is
+ * The basic business logic controller for the Hub implementation. It is intended to be usable under
- * intended to be usable under a very thin servlet wrapper, or other, non-HTTP
+ * a very thin servlet wrapper, or other, non-HTTP notification methods you might want to use.
- * notification methods you might want to use.
  *
  * @author robert.cooper
  */
 public class Hub {
+
+    private static final Logger LOG = LoggerFactory.getLogger(Hub.class);
+
     private static final HashSet<String> STANDARD_SCHEMES = new HashSet<String>();
 
     static {
@@ -82,12 +84,9 @@ public class Hub {
      *
      * @param dao The persistence HubDAO to use
      * @param verifier The verification strategy to use
-     * @param validSchemes A list of valid URI schemes for callbacks (default:
+     * @param validSchemes A list of valid URI schemes for callbacks (default: http, https)
-     *            http, https)
+     * @param validPorts A list of valid port numbers for callbacks (default: any)
-     * @param validPorts A list of valid port numbers for callbacks (default:
+     * @param validTopics A set of valid topic URIs which can be subscribed to (default: any)
-     *            any)
-     * @param validTopics A set of valid topic URIs which can be subscribed to
-     *            (default: any)
      */
     public Hub(final HubDAO dao, final Verifier verifier, final Notifier notifier, final FeedFetcher fetcher, final Set<String> validSchemes,
             final Set<Integer> validPorts, final Set<String> validTopics) {
@@ -118,20 +117,19 @@ public class Hub {
     /**
      * Sends a notification to the subscribers
      *
-     * @param requestHost the host name the hub is running on. (Used for the
+     * @param requestHost the host name the hub is running on. (Used for the user agent)
-     *            user agent)
      * @param topic the URL of the topic that was updated.
-     * @throws HttpStatusCodeException a wrapper exception with a recommended
+     * @throws HttpStatusCodeException a wrapper exception with a recommended status code for the
-     *             status code for the request.
+     *             request.
      */
     public void sendNotification(final String requestHost, final String topic) {
         assert validTopics.isEmpty() || validTopics.contains(topic) : "That topic is not supported by this hub. " + topic;
-        Logger.getLogger(Hub.class.getName()).log(Level.FINE, "Sending notification for {0}", topic);
+        LOG.debug("Sending notification for {}", topic);
         try {
             final List<? extends Subscriber> subscribers = dao.subscribersForTopic(topic);
 
             if (subscribers.isEmpty()) {
-                Logger.getLogger(Hub.class.getName()).log(Level.FINE, "No subscribers to notify for {0}", topic);
+                LOG.debug("No subscribers to notify for {}", topic);
                 return;
             }
 
@@ -149,7 +147,7 @@ public class Hub {
             final StringBuilder userAgent = new StringBuilder("ROME-Certiorem (+http://").append(requestHost).append("; ").append(total)
                     .append(" subscribers)").append(hosts);
             final SyndFeed feed = fetcher.retrieveFeed(userAgent.toString(), new URL(topic));
-            Logger.getLogger(Hub.class.getName()).log(Level.FINE, "Got feed for {0}  Sending to {1} subscribers.", new Object[] { topic, subscribers.size() });
+            LOG.debug("Got feed for {}  Sending to {} subscribers.", topic, subscribers.size());
             notifier.notifySubscribers(subscribers, feed, new SubscriptionSummaryCallback() {
                 @Override
                 public void onSummaryInfo(final SubscriptionSummary summary) {
@@ -157,7 +155,7 @@ public class Hub {
                 }
             });
         } catch (final Exception ex) {
-            Logger.getLogger(Hub.class.getName()).log(Level.SEVERE, "Exception getting " + topic, ex);
+            LOG.debug("Exception getting " + topic, ex);
             throw new HttpStatusCodeException(500, ex.getMessage(), ex);
         }
     }
@@ -171,15 +169,14 @@ public class Hub {
      * @param lease_seconds Duration of the lease
      * @param secret Secret value
      * @param verify_token verify_token;
-     * @return Boolean.TRUE if the subscription succeeded synchronously,
+     * @return Boolean.TRUE if the subscription succeeded synchronously, Boolean.FALSE if the
-     *         Boolean.FALSE if the subscription failed synchronously, or null
+     *         subscription failed synchronously, or null if the request is asynchronous.
-     *         if the request is asynchronous.
+     * @throws HttpStatusCodeException a wrapper exception with a recommended status code for the
-     * @throws HttpStatusCodeException a wrapper exception with a recommended
+     *             request.
-     *             status code for the request.
      */
     public Boolean subscribe(final String callback, final String topic, final String verify, final long lease_seconds, final String secret,
             final String verify_token) {
-        Logger.getLogger(Hub.class.getName()).log(Level.FINE, "{0} wants to subscribe to {1}", new Object[] { callback, topic });
+        LOG.debug("{} wants to subscribe to {}", callback, topic);
         try {
             try {
                 assert callback != null : "Callback URL is required.";
@@ -206,8 +203,7 @@ public class Hub {
                 @Override
                 public void onVerify(final boolean verified) {
                     if (verified) {
-                        Logger.getLogger(Hub.class.getName()).log(Level.FINE, "Verified {0} subscribed to {1}",
+                        LOG.debug("Verified {} subscribed to {}", subscriber.getCallback(), subscriber.getTopic());
-                                new Object[] { subscriber.getCallback(), subscriber.getTopic() });
                         dao.addSubscriber(subscriber);
                     }
                 }
@@ -248,8 +244,7 @@ public class Hub {
 
                 @Override
                 public void onVerify(final boolean verified) {
-                    Logger.getLogger(Hub.class.getName()).log(Level.FINE, "Unsubscribe for {0} at {1} verified {2}",
+                    LOG.debug("Unsubscribe for {} at {} verified {}", subscriber.getTopic(), subscriber.getCallback(), verified);
-                            new Object[] { subscriber.getTopic(), subscriber.getCallback(), verified });
                     if (verified) {
                         dao.removeSubscriber(topic, callback);
                     }

src/main/java/org/rometools/certiorem/hub/notify/standard/AbstractNotifier.java

@@ -26,12 +26,12 @@ import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.List;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.hub.Notifier;
 import org.rometools.certiorem.hub.data.Subscriber;
 import org.rometools.certiorem.hub.data.SubscriptionSummary;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.sun.syndication.feed.synd.SyndFeed;
 import com.sun.syndication.io.FeedException;
@@ -42,20 +42,23 @@ import com.sun.syndication.io.SyndFeedOutput;
  * @author robert.cooper
  */
 public abstract class AbstractNotifier implements Notifier {
+
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractNotifier.class);
+
     /**
-     * This method will serialize the synd feed and build Notifications for the
+     * This method will serialize the synd feed and build Notifications for the implementation class
-     * implementation class to handle.
+     * to handle.
      *
      * @see enqueueNotification
      *
      * @param subscribers List of subscribers to notify
      * @param value The SyndFeed object to send
-     * @param callback A callback that will be invoked each time a subscriber is
+     * @param callback A callback that will be invoked each time a subscriber is notified.
-     *            notified.
      *
      */
     @Override
     public void notifySubscribers(final List<? extends Subscriber> subscribers, final SyndFeed value, final SubscriptionSummaryCallback callback) {
+
         String mimeType = null;
 
         if (value.getFeedType().startsWith("rss")) {
@@ -71,10 +74,10 @@ public abstract class AbstractNotifier implements Notifier {
             output.output(value, new OutputStreamWriter(baos));
             baos.close();
         } catch (final IOException ex) {
-            Logger.getLogger(AbstractNotifier.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("Unable to output the feed", ex);
             throw new RuntimeException("Unable to output the feed.", ex);
         } catch (final FeedException ex) {
-            Logger.getLogger(AbstractNotifier.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("Unable to output the feed", ex);
             throw new RuntimeException("Unable to output the feed.", ex);
         }
 
@@ -100,9 +103,8 @@ public abstract class AbstractNotifier implements Notifier {
     protected abstract void enqueueNotification(Notification not);
 
     /**
-     * POSTs the payload to the subscriber's callback and returns a
+     * POSTs the payload to the subscriber's callback and returns a SubscriptionSummary with
-     * SubscriptionSummary with subscriber counts (where possible) and the
+     * subscriber counts (where possible) and the success state of the notification.
-     * success state of the notification.
      *
      * @param subscriber subscriber data.
      * @param mimeType MIME type for the request
@@ -114,7 +116,7 @@ public abstract class AbstractNotifier implements Notifier {
 
         try {
             final URL target = new URL(subscriber.getCallback());
-            Logger.getLogger(AbstractNotifier.class.getName()).log(Level.INFO, "Posting notification to subscriber {0}", subscriber.getCallback());
+            LOG.info("Posting notification to subscriber {}", subscriber.getCallback());
             result.setHost(target.getHost());
 
             final HttpURLConnection connection = (HttpURLConnection) target.openConnection();
@@ -132,9 +134,8 @@ public abstract class AbstractNotifier implements Notifier {
             connection.disconnect();
 
             if (responseCode != 200) {
-                Logger.getLogger(AbstractNotifier.class.getName()).log(Level.WARNING, "Got code " + responseCode + " from " + target);
+                LOG.warn("Got code {} from {}", responseCode, target);
                 result.setLastPublishSuccessful(false);
-
                 return result;
             }
 
@@ -142,17 +143,17 @@ public abstract class AbstractNotifier implements Notifier {
                 try {
                     result.setSubscribers(Integer.parseInt(subscribers));
                 } catch (final NumberFormatException nfe) {
-                    Logger.getLogger(AbstractNotifier.class.getName()).log(Level.WARNING, "Invalid subscriber value " + subscribers + " " + target, nfe);
+                    LOG.warn("Invalid subscriber value " + subscribers + " " + target, nfe);
                     result.setSubscribers(-1);
                 }
             } else {
                 result.setSubscribers(-1);
             }
         } catch (final MalformedURLException ex) {
-            Logger.getLogger(AbstractNotifier.class.getName()).log(Level.WARNING, null, ex);
+            LOG.warn(null, ex);
             result.setLastPublishSuccessful(false);
         } catch (final IOException ex) {
-            Logger.getLogger(AbstractNotifier.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error(null, ex);
             result.setLastPublishSuccessful(false);
         }
 

src/main/java/org/rometools/certiorem/hub/verify/standard/AbstractVerifier.java

@@ -27,19 +27,22 @@ import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.UUID;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.hub.Verifier;
 import org.rometools.certiorem.hub.data.Subscriber;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
- * An abstract verifier based on the java.net HTTP classes. This implements only
+ * An abstract verifier based on the java.net HTTP classes. This implements only synchronous
- * synchronous operations, and expects a child class to do Async ops.
+ * operations, and expects a child class to do Async ops.
  *
  * @author robert.cooper
  */
 public abstract class AbstractVerifier implements Verifier {
+
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractVerifier.class);
+
     @Override
     public boolean verifySubcribeSyncronously(final Subscriber subscriber) {
         return doOp(Verifier.MODE_SUBSCRIBE, subscriber);
@@ -55,7 +58,7 @@ public abstract class AbstractVerifier implements Verifier {
             final String challenge = UUID.randomUUID().toString();
             final StringBuilder queryString = new StringBuilder();
             queryString.append("hub.mode=").append(mode).append("&hub.topic=").append(URLEncoder.encode(subscriber.getTopic(), "UTF-8"))
-                    .append("&hub.challenge=").append(challenge);
+            .append("&hub.challenge=").append(challenge);
 
             if (subscriber.getLeaseSeconds() != -1) {
                 queryString.append("&hub.lease_seconds=").append(subscriber.getLeaseSeconds());
@@ -85,11 +88,10 @@ public abstract class AbstractVerifier implements Verifier {
                 return true;
             }
         } catch (final UnsupportedEncodingException ex) {
-            Logger.getLogger(AbstractVerifier.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("Unsupported encoding", ex);
             throw new RuntimeException("Should not happen. UTF-8 threw unsupported encoding", ex);
         } catch (final IOException ex) {
-            Logger.getLogger(AbstractVerifier.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("An IOException occured", ex);
-
             return false;
         }
     }

src/main/java/org/rometools/certiorem/pub/Publisher.java

@@ -25,8 +25,9 @@ import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.concurrent.ThreadPoolExecutor;
-import java.util.logging.Level;
+
-import java.util.logging.Logger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.sun.syndication.feed.synd.SyndFeed;
 import com.sun.syndication.feed.synd.SyndLink;
@@ -37,18 +38,19 @@ import com.sun.syndication.feed.synd.SyndLink;
  * @author robert.cooper
  */
 public class Publisher {
+
+    private static final Logger LOG = LoggerFactory.getLogger(Publisher.class);
+
     private ThreadPoolExecutor executor;
 
     /**
-     * Constructs a new publisher. This publisher will spawn a new thread for
+     * Constructs a new publisher. This publisher will spawn a new thread for each async send.
-     * each async send.
      */
     public Publisher() {
     }
 
     /**
-     * Constructs a new publisher with an optional ThreadPoolExector for sending
+     * Constructs a new publisher with an optional ThreadPoolExector for sending updates.
-     * updates.
      */
     public Publisher(final ThreadPoolExecutor executor) {
         this.executor = executor;
@@ -84,17 +86,16 @@ public class Publisher {
             }
 
         } catch (final UnsupportedEncodingException ex) {
-            Logger.getLogger(Publisher.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("Could not encode URL", ex);
             throw new NotificationException("Could not encode URL", ex);
         } catch (final IOException ex) {
-            Logger.getLogger(Publisher.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error("Communication error", ex);
             throw new NotificationException("Unable to communicate with " + hub, ex);
         }
     }
 
     /**
-     * Sends a notification for a feed located at "topic". The feed MUST contain
+     * Sends a notification for a feed located at "topic". The feed MUST contain rel="hub".
-     * rel="hub".
      *
      * @param topic URL for the feed
      * @param feed The feed itself
@@ -112,8 +113,7 @@ public class Publisher {
     }
 
     /**
-     * Sends a notification for a feed. The feed MUST contain rel="hub" and
+     * Sends a notification for a feed. The feed MUST contain rel="hub" and rel="self" links.
-     * rel="self" links.
      *
      * @param feed The feed to notify
      * @throws NotificationException Any failure
@@ -176,8 +176,8 @@ public class Publisher {
     }
 
     /**
-     * Asynchronously sends a notification for a feed located at "topic". The
+     * Asynchronously sends a notification for a feed located at "topic". The feed MUST contain
-     * feed MUST contain rel="hub".
+     * rel="hub".
      *
      * @param topic URL for the feed
      * @param feed The feed itself
@@ -205,8 +205,8 @@ public class Publisher {
     }
 
     /**
-     * Asyncronously sends a notification for a feed. The feed MUST contain
+     * Asyncronously sends a notification for a feed. The feed MUST contain rel="hub" and rel="self"
-     * rel="hub" and rel="self" links.
+     * links.
      *
      * @param feed The feed to notify
      * @param callback A callback invoked when the notification completes.

src/main/java/org/rometools/certiorem/sub/Subscriptions.java

@@ -28,8 +28,6 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.UUID;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.HttpStatusCodeException;
 import org.rometools.certiorem.sub.Requester.RequestCallback;
@@ -38,6 +36,8 @@ import org.rometools.certiorem.sub.data.Subscription;
 import org.rometools.certiorem.sub.data.SubscriptionCallback;
 import org.rometools.fetcher.impl.FeedFetcherCache;
 import org.rometools.fetcher.impl.SyndFeedInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.sun.syndication.feed.synd.SyndFeed;
 import com.sun.syndication.feed.synd.SyndLink;
@@ -50,7 +50,7 @@ import com.sun.syndication.io.SyndFeedInput;
  */
 public class Subscriptions {
 
-    private static final Logger LOGGER = Logger.getLogger(Subscriptions.class.getName());
+    private static final Logger LOG = LoggerFactory.getLogger(Subscriptions.class);
 
     // TODO unsubscribe.
     private FeedFetcherCache cache;
@@ -72,7 +72,7 @@ public class Subscriptions {
         try {
             this.callback(callbackPath, feed.getBytes("UTF-8"));
         } catch (final UnsupportedEncodingException ex) {
-            LOGGER.log(Level.SEVERE, null, ex);
+            LOG.error("Unable to parse feed", ex);
             throw new HttpStatusCodeException(400, "Unable to parse feed.", ex);
         }
     }
@@ -83,10 +83,10 @@ public class Subscriptions {
         try {
             this.callback(callbackPath, input.build(new InputStreamReader(feed)));
         } catch (final IllegalArgumentException ex) {
-            LOGGER.log(Level.SEVERE, null, ex);
+            LOG.error("Unable to parse feed", ex);
             throw new HttpStatusCodeException(500, "Unable to parse feed.", ex);
         } catch (final FeedException ex) {
-            LOGGER.log(Level.SEVERE, null, ex);
+            LOG.error("Unable to parse feed", ex);
             throw new HttpStatusCodeException(400, "Unable to parse feed.", ex);
         }
     }
@@ -102,7 +102,7 @@ public class Subscriptions {
         }
 
         final String id = callbackPath.substring(callbackPrefix.length());
-        LOGGER.log(Level.FINE, "Got callback for {0}", id);
+        LOG.debug("Got callback for {}", id);
         final Subscription s = dao.findById(id);
 
         if (s == null) {
@@ -118,7 +118,7 @@ public class Subscriptions {
             url = new URL(s.getSourceUrl());
             info = cache.getFeedInfo(url);
         } catch (final MalformedURLException ex) {
-            LOGGER.log(Level.SEVERE, null, ex);
+            LOG.error("Malformed URL", ex);
         }
 
         if (info == null) {
@@ -196,7 +196,7 @@ public class Subscriptions {
         }
 
         final String id = callbackPath.substring(callbackPrefix.length());
-        LOGGER.log(Level.FINE, "Handling validation request for id {0}", id);
+        LOG.debug("Handling validation request for id {}", id);
         final Subscription s = dao.findById(id);
         if (s == null) {
             throw new HttpStatusCodeException(404, "Not a valid subscription id", null);
@@ -221,7 +221,7 @@ public class Subscriptions {
         } else {
             throw new HttpStatusCodeException(400, "Unsupported mode " + mode, null);
         }
-        LOGGER.log(Level.FINE, "Validated. Returning {0}", challenge);
+        LOG.debug("Validated. Returning {}", challenge);
         return challenge;
     }
 
@@ -248,7 +248,7 @@ public class Subscriptions {
 
                     break;
                 } catch (final URISyntaxException ex) {
-                    LOGGER.log(Level.SEVERE, null, ex);
+                    LOG.error(null, ex);
                 }
             }
         }

src/main/java/org/rometools/certiorem/sub/data/ram/InMemorySubDAO.java

@@ -25,11 +25,11 @@ package org.rometools.certiorem.sub.data.ram;
 
 import java.util.Date;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.sub.data.SubDAO;
 import org.rometools.certiorem.sub.data.Subscription;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -37,6 +37,8 @@ import org.rometools.certiorem.sub.data.Subscription;
  */
 public class InMemorySubDAO implements SubDAO {
 
+    private static final Logger LOG = LoggerFactory.getLogger(InMemorySubDAO.class);
+
     private final ConcurrentHashMap<String, Subscription> subscriptions = new ConcurrentHashMap<String, Subscription>();
 
     @Override
@@ -46,8 +48,7 @@ public class InMemorySubDAO implements SubDAO {
             return null;
         }
         if (s.getExpirationTime() > 0 && s.getExpirationTime() <= System.currentTimeMillis()) {
-            Logger.getLogger(InMemorySubDAO.class.getName()).log(Level.FINE, "Subscription {0} expired at {1}",
+            LOG.debug("Subscription {} expired at {}", s.getSourceUrl(), new Date(s.getExpirationTime()));
-                    new Object[] { s.getSourceUrl(), new Date(s.getExpirationTime()) });
             subscriptions.remove(id);
 
             return null;
@@ -58,7 +59,7 @@ public class InMemorySubDAO implements SubDAO {
     @Override
     public Subscription addSubscription(final Subscription s) {
         subscriptions.put(s.getId(), s);
-        Logger.getLogger(InMemorySubDAO.class.getName()).log(Level.FINE, "Stored subscription {0} {1}", new Object[] { s.getSourceUrl(), s.getId() });
+        LOG.debug("Stored subscription {} {}", s.getSourceUrl(), s.getId());
         return s;
     }
 

src/main/java/org/rometools/certiorem/sub/request/AsyncRequester.java

@@ -19,10 +19,10 @@
 package org.rometools.certiorem.sub.request;
 
 import java.io.IOException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.sub.data.Subscription;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A simple requester implementation that always makes requests as Async.
@@ -30,18 +30,20 @@ import org.rometools.certiorem.sub.data.Subscription;
  * @author robert.cooper
  */
 public class AsyncRequester extends AbstractRequester {
+
+    private static final Logger LOG = LoggerFactory.getLogger(AsyncRequester.class);
+
     @Override
     public void sendSubscribeRequest(final String hubUrl, final Subscription subscription, final String verifySync, final long leaseSeconds,
             final String secret, final String callbackUrl, final RequestCallback callback) {
-        Logger.getLogger(AsyncRequester.class.getName()).log(Level.FINE, "Sending subscribe request to {0} for {1} to {2}",
+        LOG.debug("Sending subscribe request to {} for {} to {}", hubUrl, subscription.getSourceUrl(), callbackUrl);
-                new Object[] { hubUrl, subscription.getSourceUrl(), callbackUrl });
         final Runnable r = new Runnable() {
             @Override
             public void run() {
                 try {
                     sendRequest(hubUrl, "subscribe", subscription, verifySync, leaseSeconds, secret, callbackUrl, callback);
                 } catch (final Exception ex) {
-                    Logger.getLogger(AsyncRequester.class.getName()).log(Level.SEVERE, null, ex);
+                    LOG.error(null, ex);
                     callback.onFailure(ex);
                 }
             }
@@ -52,15 +54,14 @@ public class AsyncRequester extends AbstractRequester {
     @Override
     public void sendUnsubscribeRequest(final String hubUrl, final Subscription subscription, final String verifySync, final String secret,
             final String callbackUrl, final RequestCallback callback) {
-        Logger.getLogger(AsyncRequester.class.getName()).log(Level.FINE, "Sending unsubscribe request to {0} for {1} to {2}",
+        LOG.debug("Sending unsubscribe request to {} for {} to {}", hubUrl, subscription.getSourceUrl(), callbackUrl);
-                new Object[] { hubUrl, subscription.getSourceUrl(), callbackUrl });
         final Runnable r = new Runnable() {
             @Override
             public void run() {
                 try {
                     sendRequest(hubUrl, "unsubscribe", subscription, verifySync, -1, secret, callbackUrl, callback);
                 } catch (final IOException ex) {
-                    Logger.getLogger(AsyncRequester.class.getName()).log(Level.SEVERE, null, ex);
+                    LOG.error(null, ex);
                     callback.onFailure(ex);
                 }
             }

src/main/java/org/rometools/certiorem/sub/request/SyncRequester.java

@@ -23,10 +23,10 @@
 package org.rometools.certiorem.sub.request;
 
 import java.io.IOException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.rometools.certiorem.sub.data.Subscription;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * A simple requester implementation that always makes requests as Async.
@@ -34,16 +34,18 @@ import org.rometools.certiorem.sub.data.Subscription;
  * @author Farrukh Najmi
  */
 public class SyncRequester extends AbstractRequester {
+
+    private static final Logger LOG = LoggerFactory.getLogger(SyncRequester.class);
+
     @Override
     public void sendSubscribeRequest(final String hubUrl, final Subscription subscription, final String verifySync, final long leaseSeconds,
             final String secret, final String callbackUrl, final RequestCallback callback) {
-        Logger.getLogger(SyncRequester.class.getName()).log(Level.INFO, "Sending subscribe request to {0} for {1} to {2}",
+        LOG.info("Sending subscribe request to {} for {} to {}", hubUrl, subscription.getSourceUrl(), callbackUrl);
-                new Object[] { hubUrl, subscription.getSourceUrl(), callbackUrl });
         try {
             sendRequest(hubUrl, "subscribe", subscription, verifySync, leaseSeconds, secret, callbackUrl, callback);
             callback.onSuccess();
         } catch (final Exception ex) {
-            Logger.getLogger(SyncRequester.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error(null, ex);
             callback.onFailure(ex);
         }
     }
@@ -51,13 +53,12 @@ public class SyncRequester extends AbstractRequester {
     @Override
     public void sendUnsubscribeRequest(final String hubUrl, final Subscription subscription, final String verifySync, final String secret,
             final String callbackUrl, final RequestCallback callback) {
-        Logger.getLogger(SyncRequester.class.getName()).log(Level.INFO, "Sending unsubscribe request to {0} for {1} to {2}",
+        LOG.info("Sending unsubscribe request to {} for {} to {}", hubUrl, subscription.getSourceUrl(), callbackUrl);
-                new Object[] { hubUrl, subscription.getSourceUrl(), callbackUrl });
         try {
             sendRequest(hubUrl, "unsubscribe", subscription, verifySync, -1, secret, callbackUrl, callback);
             callback.onSuccess();
         } catch (final IOException ex) {
-            Logger.getLogger(SyncRequester.class.getName()).log(Level.SEVERE, null, ex);
+            LOG.error(null, ex);
             callback.onFailure(ex);
         }
     }

src/test/java/org/rometools/certiorem/hub/ControllerTest.java

@@ -21,8 +21,6 @@ package org.rometools.certiorem.hub;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
 
-import java.util.logging.Logger;
-
 import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.Before;
@@ -34,12 +32,17 @@ import org.rometools.certiorem.hub.data.ram.InMemoryHubDAO;
 import org.rometools.fetcher.FeedFetcher;
 import org.rometools.fetcher.impl.HashMapFeedInfoCache;
 import org.rometools.fetcher.impl.HttpURLFeedFetcher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
  * @author robert.cooper
  */
 public class ControllerTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(ControllerTest.class);
+
     public ControllerTest() {
     }
 
@@ -64,7 +67,8 @@ public class ControllerTest {
      */
     @Test
     public void testSubscribe() {
-        Logger.getLogger(ControllerTest.class.getName()).info("subscribe");
+
+        LOG.info("subscribe");
 
         final String callback = "http://localhost/doNothing";
         final String topic = "http://feeds.feedburner.com/screaming-penguin";
@@ -92,7 +96,7 @@ public class ControllerTest {
             fail();
         } catch (final HttpStatusCodeException e) {
             assertEquals(400, e.getStatus());
-            Logger.getLogger(ControllerTest.class.getName()).info(e.getMessage());
+            LOG.info(e.getMessage());
         }
 
         try {
@@ -100,7 +104,7 @@ public class ControllerTest {
             fail();
         } catch (final HttpStatusCodeException e) {
             assertEquals(400, e.getStatus());
-            Logger.getLogger(ControllerTest.class.getName()).info(e.getMessage());
+            LOG.info(e.getMessage());
         }
 
         try {
@@ -108,7 +112,7 @@ public class ControllerTest {
             fail();
         } catch (final HttpStatusCodeException e) {
             assertEquals(400, e.getStatus());
-            Logger.getLogger(ControllerTest.class.getName()).info(e.getMessage());
+            LOG.info(e.getMessage());
         }
 
         // test general exception

src/test/java/org/rometools/certiorem/hub/data/AbstractDAOTest.java

@@ -19,10 +19,10 @@
 package org.rometools.certiorem.hub.data;
 
 import java.util.List;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -30,14 +30,14 @@ import org.junit.Test;
  */
 public abstract class AbstractDAOTest {
 
-    private static final Logger LOGGER = Logger.getLogger(AbstractDAOTest.class.getName());
+    private static final Logger LOG = LoggerFactory.getLogger(AbstractDAOTest.class);
 
     protected abstract HubDAO get();
 
     @Test
     public void testSubscribe() {
         final HubDAO instance = get();
-        LOGGER.log(Level.INFO, "{0} testSubscribe", instance.getClass().getName());
+        LOG.info("{} testSubscribe", instance.getClass().getName());
         final Subscriber subscriber = new Subscriber();
         subscriber.setCallback("http://localhost:9797/noop");
         subscriber.setTopic("http://feeds.feedburner.com/screaming-penguin");
@@ -56,7 +56,7 @@ public abstract class AbstractDAOTest {
     @Test
     public void testLeaseExpire() throws InterruptedException {
         final HubDAO instance = get();
-        LOGGER.log(Level.INFO, "{0} testLeaseExpire", instance.getClass().getName());
+        LOG.info("{} testLeaseExpire", instance.getClass().getName());
         final Subscriber subscriber = new Subscriber();
         subscriber.setCallback("http://localhost:9797/noop");
         subscriber.setTopic("http://feeds.feedburner.com/screaming-penguin");
@@ -78,7 +78,7 @@ public abstract class AbstractDAOTest {
     @Test
     public void testUnsubscribe() throws InterruptedException {
         final HubDAO instance = get();
-        LOGGER.log(Level.INFO, "{0} testUnsubscribe", instance.getClass().getName());
+        LOG.info("{} testUnsubscribe", instance.getClass().getName());
         final Subscriber subscriber = new Subscriber();
         subscriber.setCallback("http://localhost:9797/noop");
         subscriber.setTopic("http://feeds.feedburner.com/screaming-penguin");

src/test/resources/logback-test.xml

@@ -0,0 +1,13 @@
+<configuration>
+
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
+		</encoder>
+	</appender>
+
+	<root level="warn">
+		<appender-ref ref="STDOUT" />
+	</root>
+
+</configuration>