Experimenting.

@@ -7,6 +7,7 @@ import org.onlab.onos.net.flow.FlowRuleService;
 import org.onlab.onos.net.host.HostService;
 import org.onlab.onos.net.intent.IntentService;
 import org.onlab.onos.net.link.LinkService;
+import org.onlab.onos.net.topology.Topology;
 import org.onlab.onos.net.topology.TopologyService;
 
 /**
@@ -19,12 +20,14 @@ public class SummaryCommand extends AbstractShellCommand {
     @Override
     protected void execute() {
         TopologyService topologyService = get(TopologyService.class);
-        print("nodes=%d, devices=%d, links=%d, hosts=%d, clusters=%s, flows=%d, intents=%d",
+        Topology topology = topologyService.currentTopology();
+        print("nodes=%d, devices=%d, links=%d, hosts=%d, clusters=%s, paths=%d, flows=%d, intents=%d",
               get(ClusterService.class).getNodes().size(),
               get(DeviceService.class).getDeviceCount(),
               get(LinkService.class).getLinkCount(),
               get(HostService.class).getHostCount(),
-              topologyService.getClusters(topologyService.currentTopology()).size(),
+              topologyService.getClusters(topology).size(),
+              topology.pathCount(),
               get(FlowRuleService.class).getFlowRuleCount(),
               get(IntentService.class).getIntentCount());
     }

@@ -115,12 +115,7 @@ public class FlowTracker implements FlowTrackerService {
                 for (Event reason : event.reasons()) {
                     if (reason instanceof LinkEvent) {
                         LinkEvent linkEvent = (LinkEvent) reason;
-                        if (linkEvent.type() == LinkEvent.Type.LINK_ADDED ||
-                                linkEvent.type() == LinkEvent.Type.LINK_UPDATED) {
                         delegate.bumpIntents(intentsByLink.get(new LinkKey(linkEvent.subject())));
-                        } else if (linkEvent.type() == LinkEvent.Type.LINK_REMOVED) {
-                            delegate.failIntents(intentsByLink.get(new LinkKey(linkEvent.subject())));
-                        }
                     }
                 }
             }

@@ -359,13 +359,5 @@ public class IntentManager
             }
         }
 
-        @Override
-        public void failIntents(Iterable<IntentId> intentIds) {
-            for (IntentId intentId : intentIds) {
-                Intent intent = getIntent(intentId);
-                uninstallIntent(intent);
-                compileIntent(intent);
-            }
-        }
     }
 }

@@ -15,12 +15,4 @@ public interface TopologyChangeDelegate {
      */
     void bumpIntents(Iterable<IntentId> intentIds);
 
-    /**
-     * Notifies that topology has changed in such a way that the specified
-     * intents should be marked failed and then recompiled.
-     *
-     * @param intentIds intents that should be failed and recompiled
-     */
-    void failIntents(Iterable<IntentId> intentIds);
-
 }