NullHostProvider - check for device ownership before host creation.

This is done by literal check of NodeId, as it is encoded in the
DeviceId.

Also includes minor fixes to config file parsing.

Reference: ONOS-873

Change-Id: Id333c109c3bb752dcb78ede3a4dfd94fec189cc0

@@ -98,7 +98,7 @@ public class NullDeviceProvider extends AbstractProvider implements DeviceProvid
 
     private int numDevices = DEF_NUMDEVICES;
 
-    @Property(name = "numPorts", intValue = DEF_NUMPORTS, label = "Number of ports per devices")
+    @Property(name = "numPorts", value = "10", label = "Number of ports per devices")
     private int numPorts = DEF_NUMPORTS;
 
     private DeviceCreator creator;
@@ -159,6 +159,8 @@ public class NullDeviceProvider extends AbstractProvider implements DeviceProvid
             newPortNum = isNullOrEmpty(s) ? DEF_NUMPORTS : Integer.valueOf(s.trim());
         } catch (Exception e) {
             log.warn(e.getMessage());
+            newDevNum = numDevices;
+            newPortNum = numPorts;
         }
 
         boolean chgd = false;

@@ -22,6 +22,8 @@ import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.mastership.MastershipService;
 import org.onosproject.net.Device;
 import org.onosproject.net.Host;
 import org.onosproject.net.HostId;
@@ -41,6 +43,7 @@ import org.onosproject.net.provider.ProviderId;
 import org.slf4j.Logger;
 
 import static org.slf4j.LoggerFactory.getLogger;
+import static org.onlab.util.Tools.toHex;
 
 /**
  * Null provider to advertise fake hosts.
@@ -54,6 +57,12 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
     protected DeviceService deviceService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected MastershipService roleService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ClusterService nodeService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected HostProviderRegistry providerRegistry;
 
     private HostProviderService providerService;
@@ -90,8 +99,6 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
         log.info("Started");
     }
 
-
-
     @Deactivate
     public void deactivate() {
         providerRegistry.unregister(this);
@@ -104,6 +111,14 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
     public void triggerProbe(Host host) {}
 
     private void addHosts(Device device) {
+        String nhash = toHex(nodeService.getLocalNode().hashCode());
+        String dhash = device.id().toString();
+        // make sure this instance owns the device.
+        if (!nhash.substring(nhash.length() - 3)
+                .equals(dhash.substring(14, 17))) {
+            log.warn("Device {} is not mine. Can't add hosts.", device.id());
+            return;
+        }
         for (int i = 0; i < HOSTSPERDEVICE; i++) {
             providerService.hostDetected(
                     HostId.hostId(MacAddress.valueOf(i + device.hashCode()),
@@ -130,8 +145,9 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
     private class InternalHostProvider implements DeviceListener {
         @Override
         public void event(DeviceEvent event) {
-            if (!deviceService.getRole(event.subject().id())
-                    .equals(MastershipRole.MASTER)) {
+            Device dev = event.subject();
+            if (!deviceService.getRole(event.subject().id()).equals(
+                    MastershipRole.MASTER)) {
                 log.info("Local node is not master for device {}", event
                         .subject().id());
                 return;
@@ -139,12 +155,12 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
             switch (event.type()) {
 
                 case DEVICE_ADDED:
-                    addHosts(event.subject());
+                    addHosts(dev);
                     break;
                 case DEVICE_UPDATED:
                     break;
                 case DEVICE_REMOVED:
-                    removeHosts(event.subject());
+                    removeHosts(dev);
                     break;
                 case DEVICE_SUSPENDED:
                     break;
@@ -161,6 +177,6 @@ public class NullHostProvider extends AbstractProvider implements HostProvider {
             }
         }
 
-
     }
+
 }

@@ -103,12 +103,12 @@ public class NullLinkProvider extends AbstractProvider implements LinkProvider {
             namedThreads("onos-null-link-driver"));
 
     // If true, 'flickers' links by alternating link up/down events at eventRate
-    @Property(name = "flicker", boolValue = FLICKER,
+    @Property(name = "flicker", value = "false",
             label = "Setting to flap links")
     private boolean flicker = FLICKER;
 
     // For flicker = true, duration between events in msec.
-    @Property(name = "eventRate", intValue = DEFAULT_RATE,
+    @Property(name = "eventRate", value = "3000",
             label = "Duration between Link Event")
     private int eventRate = DEFAULT_RATE;