Adding more aggressive and thorough implementation of wipe-out command.

Change-Id: I828ccdc994a490e17c2806d27aa36460da10f795

@@ -19,13 +19,13 @@ import org.apache.karaf.shell.commands.Argument;
 import org.apache.karaf.shell.commands.Command;
 import org.onosproject.net.Device;
 import org.onosproject.net.Host;
+import org.onosproject.net.Link;
 import org.onosproject.net.device.DeviceAdminService;
-import org.onosproject.net.device.DeviceService;
 import org.onosproject.net.host.HostAdminService;
-import org.onosproject.net.host.HostService;
 import org.onosproject.net.intent.Intent;
 import org.onosproject.net.intent.IntentService;
 import org.onosproject.net.intent.IntentState;
+import org.onosproject.net.link.LinkAdminService;
 
 /**
  * Wipes-out the entire network information base, i.e. devices, links, hosts, intents.
@@ -49,17 +49,40 @@ public class WipeOutCommand extends ClustersListCommand {
 
         print("Wiping devices");
         DeviceAdminService deviceAdminService = get(DeviceAdminService.class);
-        DeviceService deviceService = get(DeviceService.class);
-        for (Device device : deviceService.getDevices()) {
+        while (deviceAdminService.getDeviceCount() > 0) {
+            try {
+                for (Device device : deviceAdminService.getDevices()) {
                     deviceAdminService.removeDevice(device.id());
                 }
+            } catch (Exception e) {
+                log.warn("Unable to wipe-out devices", e);
+            }
+        }
+
+        print("Wiping links");
+        LinkAdminService linkAdminService = get(LinkAdminService.class);
+        while (linkAdminService.getLinkCount() > 0) {
+            try {
+                for (Link link : linkAdminService.getLinks()) {
+                    linkAdminService.removeLinks(link.src());
+                    linkAdminService.removeLinks(link.dst());
+                }
+            } catch (Exception e) {
+                log.warn("Unable to wipe-out links", e);
+            }
+        }
 
         print("Wiping hosts");
         HostAdminService hostAdminService = get(HostAdminService.class);
-        HostService hostService = get(HostService.class);
-        for (Host host : hostService.getHosts()) {
+        while (hostAdminService.getHostCount() > 0) {
+            try {
+                for (Host host : hostAdminService.getHosts()) {
                     hostAdminService.removeHost(host.id());
                 }
+            } catch (Exception e) {
+                log.warn("Unable to wipe-out hosts", e);
+            }
+        }
 
         print("Wiping intents");
         IntentService intentService = get(IntentService.class);
@@ -67,6 +90,7 @@ public class WipeOutCommand extends ClustersListCommand {
             if (intentService.getIntentState(intent.key()) == IntentState.INSTALLED) {
                 intentService.withdraw(intent);
             }
+            intentService.purge(intent);
         }
     }
 }

@@ -44,6 +44,10 @@ expect)
     "
     ;;
 
+attach)
+    $mininet -x
+    ;;
+
 start)
     ssh $remote "rm -f $log; echo logfile flush 1 > ~/.screenrc"
     (

@@ -16,6 +16,6 @@
 <scenario name="net-setup" description="Network teardown steps">
     <group name="Net-Teardown">
         <step name="Stop-Mininet" exec="onos-mininet stop"/>
-        <step name="Wipe-Out-Data-After" requires="~Stop-Mininet" exec="onos-wipe-out"/>
+        <XXXstep name="Wipe-Out-Data-After" requires="~Stop-Mininet" exec="onos-wipe-out"/>
     </group>
 </scenario>
\ No newline at end of file