Merge pull request #49 from sonyxperiadev/diagnostics

Added methods to get a read only view of registered listeners

src/main/java/com/sonymobile/tools/gerrit/gerritevents/GerritConnection.java

@@ -28,6 +28,7 @@
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.Reader;
+import java.util.Collections;
 import java.util.Set;
 import java.util.concurrent.CopyOnWriteArraySet;
 
@@ -279,6 +280,16 @@ public void removeListeners() {
         listeners.clear();
     }
 
+    /**
+     * Returns an unmodifiable view of the set of {@link ConnectionListener}s.
+     *
+     * @return the set of connection listeners.
+     * @see Collections#unmodifiableSet(Set)
+     */
+    public Set<ConnectionListener> getListenersView() {
+        return Collections.unmodifiableSet(listeners);
+    }
+
     /**
      * Sets {@link AuthenticationUpdater}.
      * @param authenticationUpdater The {@link AuthenticationUpdater}.

src/main/java/com/sonymobile/tools/gerrit/gerritevents/GerritHandler.java

@@ -44,6 +44,7 @@
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -241,6 +242,16 @@ public int getEventListenersCount() {
         return gerritEventListeners.size();
     }
 
+    /**
+     * Returns an unmodifiable view of the set of {@link GerritEventListener}s.
+     *
+     * @return a list of the registered event listeners.
+     * @see Collections#unmodifiableSet(Set)
+     */
+    public Set<GerritEventListener> getGerritEventListenersView() {
+        return Collections.unmodifiableSet(gerritEventListeners);
+    }
+
     /**
      * Gets the number of event worker threads.
      *