Generalize IntentSynchronizer and separate reactive routing code

 * IntentSynchronizer can now handle any intent rather than having use
   case specific APIs
 * IntentSynchronizer does not generate or store intents anymore, it only
   perform synchronization
 * SdnIpFib generates and manages the procative route-based intents
 * ReactiveRoutingFib generates and manages the reactive intents
 * Unit tests have been tightned up to only test single components, rather
   than multiple components together
 * PeerConnectivityManager uses meaningful keys when creating intents

Change-Id: I4bb036ec8d056f43ece46f7dfc71d5e5a136b77d

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.reactive.routing;
+
+/**
+ * Specifies the type of an IP address or an IP prefix location.
+ */
+enum LocationType {
+    /**
+     * The location of an IP address or an IP prefix is in local SDN network.
+     */
+    LOCAL,
+    /**
+     * The location of an IP address or an IP prefix is outside local SDN network.
+     */
+    INTERNET,
+    /**
+     * There is no route for this IP address or IP prefix.
+     */
+    NO_ROUTE
+}

@@ -25,27 +25,39 @@ import org.onlab.packet.EthType;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
 import org.onlab.packet.Ip4Address;
+import org.onlab.packet.Ip6Address;
 import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
+import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.incubator.net.intf.InterfaceService;
 import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.Host;
 import org.onosproject.net.flow.DefaultTrafficSelector;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
 import org.onosproject.net.flow.TrafficSelector;
 import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.host.HostService;
 import org.onosproject.net.packet.DefaultOutboundPacket;
 import org.onosproject.net.packet.InboundPacket;
 import org.onosproject.net.packet.OutboundPacket;
 import org.onosproject.net.packet.PacketContext;
 import org.onosproject.net.packet.PacketProcessor;
 import org.onosproject.net.packet.PacketService;
+import org.onosproject.routing.IntentRequestListener;
+import org.onosproject.routing.RouteEntry;
 import org.onosproject.routing.RoutingService;
+import org.onosproject.routing.SdnIpService;
 import org.onosproject.routing.config.RoutingConfigurationService;
 import org.slf4j.Logger;
 
 import java.nio.ByteBuffer;
+import java.util.Optional;
+import java.util.Set;
 
+import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onlab.packet.Ethernet.TYPE_ARP;
 import static org.onlab.packet.Ethernet.TYPE_IPV4;
 import static org.onosproject.net.packet.PacketPriority.REACTIVE;
@@ -74,16 +86,32 @@ public class SdnIpReactiveRouting {
     protected RoutingService routingService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected SdnIpService sdnIpService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected RoutingConfigurationService config;
 
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected InterfaceService interfaceService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected HostService hostService;
+
     private ApplicationId appId;
 
+    private IntentRequestListener intentRequestListener;
+
     private ReactiveRoutingProcessor processor =
             new ReactiveRoutingProcessor();
 
     @Activate
     public void activate() {
         appId = coreService.registerApplication(APP_NAME);
+
+        intentRequestListener = new ReactiveRoutingFib(appId, hostService,
+                config, interfaceService,
+                sdnIpService.getIntentSynchronizationService());
+
         packetService.addProcessor(processor, PacketProcessor.director(2));
         requestIntercepts();
         log.info("SDN-IP Reactive Routing Started");
@@ -168,12 +196,11 @@ public class SdnIpReactiveRouting {
                 IpAddress srcIp =
                         IpAddress.valueOf(ipv4Packet.getSourceAddress());
                 MacAddress srcMac = ethPkt.getSourceMAC();
-                routingService.packetReactiveProcessor(dstIp, srcIp,
-                                                       srcConnectPoint, srcMac);
+                packetReactiveProcessor(dstIp, srcIp, srcConnectPoint, srcMac);
 
                 // TODO emit packet first or packetReactiveProcessor first
                 ConnectPoint egressConnectPoint = null;
-                egressConnectPoint = routingService.getEgressConnectPoint(dstIp);
+                egressConnectPoint = getEgressConnectPoint(dstIp);
                 if (egressConnectPoint != null) {
                     forwardPacketToDst(context, egressConnectPoint);
                 }
@@ -185,6 +212,170 @@ public class SdnIpReactiveRouting {
     }
 
     /**
+     * Routes packet reactively.
+     *
+     * @param dstIpAddress the destination IP address of a packet
+     * @param srcIpAddress the source IP address of a packet
+     * @param srcConnectPoint the connect point where a packet comes from
+     * @param srcMacAddress the source MAC address of a packet
+     */
+    private void packetReactiveProcessor(IpAddress dstIpAddress,
+                                        IpAddress srcIpAddress,
+                                        ConnectPoint srcConnectPoint,
+                                        MacAddress srcMacAddress) {
+        checkNotNull(dstIpAddress);
+        checkNotNull(srcIpAddress);
+        checkNotNull(srcConnectPoint);
+        checkNotNull(srcMacAddress);
+
+        //
+        // Step1: Try to update the existing intent first if it exists.
+        //
+        IpPrefix ipPrefix = null;
+        RouteEntry routeEntry = null;
+        if (config.isIpAddressLocal(dstIpAddress)) {
+            if (dstIpAddress.isIp4()) {
+                ipPrefix = IpPrefix.valueOf(dstIpAddress,
+                        Ip4Address.BIT_LENGTH);
+            } else {
+                ipPrefix = IpPrefix.valueOf(dstIpAddress,
+                        Ip6Address.BIT_LENGTH);
+            }
+        } else {
+            // Get IP prefix from BGP route table
+            routeEntry = routingService.getLongestMatchableRouteEntry(dstIpAddress);
+            if (routeEntry != null) {
+                ipPrefix = routeEntry.prefix();
+            }
+        }
+        if (ipPrefix != null
+                && intentRequestListener.mp2pIntentExists(ipPrefix)) {
+            intentRequestListener.updateExistingMp2pIntent(ipPrefix,
+                    srcConnectPoint);
+            return;
+        }
+
+        //
+        // Step2: There is no existing intent for the destination IP address.
+        // Check whether it is necessary to create a new one. If necessary then
+        // create a new one.
+        //
+        TrafficType trafficType =
+                trafficTypeClassifier(srcConnectPoint, dstIpAddress);
+
+        switch (trafficType) {
+        case HOST_TO_INTERNET:
+            // If the destination IP address is outside the local SDN network.
+            // The Step 1 has already handled it. We do not need to do anything here.
+            intentRequestListener.setUpConnectivityHostToInternet(srcIpAddress,
+                    ipPrefix, routeEntry.nextHop());
+            break;
+        case INTERNET_TO_HOST:
+            intentRequestListener.setUpConnectivityInternetToHost(dstIpAddress);
+            break;
+        case HOST_TO_HOST:
+            intentRequestListener.setUpConnectivityHostToHost(dstIpAddress,
+                    srcIpAddress, srcMacAddress, srcConnectPoint);
+            break;
+        case INTERNET_TO_INTERNET:
+            log.trace("This is transit traffic, "
+                    + "the intent should be preinstalled already");
+            break;
+        case DROP:
+            // TODO here should setUpDropPacketIntent(...);
+            // We need a new type of intent here.
+            break;
+        case UNKNOWN:
+            log.trace("This is unknown traffic, so we do nothing");
+            break;
+        default:
+            break;
+        }
+    }
+
+    /**
+     * Classifies the traffic and return the traffic type.
+     *
+     * @param srcConnectPoint the connect point where the packet comes from
+     * @param dstIp the destination IP address in packet
+     * @return the traffic type which this packet belongs to
+     */
+    private TrafficType trafficTypeClassifier(ConnectPoint srcConnectPoint,
+                                                             IpAddress dstIp) {
+        LocationType dstIpLocationType = getLocationType(dstIp);
+        Optional<Interface> srcInterface =
+                interfaceService.getInterfacesByPort(srcConnectPoint).stream().findFirst();
+
+        switch (dstIpLocationType) {
+        case INTERNET:
+            if (!srcInterface.isPresent()) {
+                return TrafficType.HOST_TO_INTERNET;
+            } else {
+                return TrafficType.INTERNET_TO_INTERNET;
+            }
+        case LOCAL:
+            if (!srcInterface.isPresent()) {
+                return TrafficType.HOST_TO_HOST;
+            } else {
+                // TODO Currently we only consider local public prefixes.
+                // In the future, we will consider the local private prefixes.
+                // If dstIpLocationType is a local private, we should return
+                // TrafficType.DROP.
+                return TrafficType.INTERNET_TO_HOST;
+            }
+        case NO_ROUTE:
+            return TrafficType.DROP;
+        default:
+            return TrafficType.UNKNOWN;
+        }
+    }
+
+    /**
+     * Evaluates the location of an IP address and returns the location type.
+     *
+     * @param ipAddress the IP address to evaluate
+     * @return the IP address location type
+     */
+    private LocationType getLocationType(IpAddress ipAddress) {
+        if (config.isIpAddressLocal(ipAddress)) {
+            return LocationType.LOCAL;
+        } else if (routingService.getLongestMatchableRouteEntry(ipAddress) != null) {
+            return LocationType.INTERNET;
+        } else {
+            return LocationType.NO_ROUTE;
+        }
+    }
+
+    public ConnectPoint getEgressConnectPoint(IpAddress dstIpAddress) {
+        LocationType type = getLocationType(dstIpAddress);
+        if (type == LocationType.LOCAL) {
+            Set<Host> hosts = hostService.getHostsByIp(dstIpAddress);
+            if (!hosts.isEmpty()) {
+                return hosts.iterator().next().location();
+            } else {
+                hostService.startMonitoringIp(dstIpAddress);
+                return null;
+            }
+        } else if (type == LocationType.INTERNET) {
+            IpAddress nextHopIpAddress = null;
+            RouteEntry routeEntry = routingService.getLongestMatchableRouteEntry(dstIpAddress);
+            if (routeEntry != null) {
+                nextHopIpAddress = routeEntry.nextHop();
+                Interface it = interfaceService.getMatchingInterface(nextHopIpAddress);
+                if (it != null) {
+                    return it.connectPoint();
+                } else {
+                    return null;
+                }
+            } else {
+                return null;
+            }
+        } else {
+            return null;
+        }
+    }
+
+    /**
      * Emits the specified packet onto the network.
      *
      * @param context      the packet context

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.reactive.routing;
+
+/**
+ * Specifies the type of traffic.
+ * <p>
+ * We classify traffic by the first packet of each traffic.
+ * </p>
+ */
+enum TrafficType {
+    /**
+     * Traffic from a host located in local SDN network wants to
+     * communicate with destination host located in Internet (outside
+     * local SDN network).
+     */
+    HOST_TO_INTERNET,
+    /**
+     * Traffic from Internet wants to communicate with a host located
+     * in local SDN network.
+     */
+    INTERNET_TO_HOST,
+    /**
+     * Both the source host and destination host of a traffic are in
+     * local SDN network.
+     */
+    HOST_TO_HOST,
+    /**
+     * Traffic from Internet wants to traverse local SDN network.
+     */
+    INTERNET_TO_INTERNET,
+    /**
+     * Any traffic wants to communicate with a destination which has
+     * no route, or traffic from Internet wants to access a local private
+     * IP address.
+     */
+    DROP,
+    /**
+     * Traffic does not belong to the types above.
+     */
+    UNKNOWN
+}

@@ -47,6 +47,16 @@ public interface IntentRequestListener {
                                      ConnectPoint srcConnectPoint);
 
     /**
+     * Sets up connectivity for packet from a local host to the Internet.
+     *
+     * @param hostIp IP address of the local host
+     * @param prefix external IP prefix that the host is talking to
+     * @param nextHopIpAddress IP address of the next hop router for the prefix
+     */
+    void setUpConnectivityHostToInternet(IpAddress hostIp, IpPrefix prefix,
+                                                IpAddress nextHopIpAddress);
+
+    /**
      * Adds one new ingress connect point into ingress points of an existing
      * intent and resubmits the new intent.
      * <p>

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.routing;
+
+import org.onosproject.net.intent.Intent;
+
+/**
+ * Submits and withdraws intents to the IntentService from a single point in
+ * the cluster at any one time. The provided intents will be synchronized with
+ * the IntentService on leadership change.
+ */
+public interface IntentSynchronizationService {
+
+    /**
+     * Submits and intent to the synchronizer.
+     * <p>
+     * The intent will be submitted directly to the IntentService if this node
+     * is the leader, otherwise it will be stored in the synchronizer for
+     * synchronization if this node becomes the leader.
+     * </p>
+     *
+     * @param intent intent to submit
+     */
+    void submit(Intent intent);
+
+    /**
+     * Withdraws an intent from the synchronizer.
+     * <p>
+     * The intent will be withdrawn directly from the IntentService if this node
+     * is the leader. The intent will be removed from the synchronizer's
+     * in-memory storage.
+     * </p>
+     *
+     * @param intent intent to withdraw
+     */
+    void withdraw(Intent intent);
+}

@@ -16,8 +16,6 @@
 package org.onosproject.routing;
 
 import org.onlab.packet.IpAddress;
-import org.onlab.packet.MacAddress;
-import org.onosproject.net.ConnectPoint;
 import org.onosproject.routing.config.BgpConfig;
 
 import java.util.Collection;
@@ -32,63 +30,6 @@ public interface RoutingService {
     Class<BgpConfig> CONFIG_CLASS = BgpConfig.class;
 
     /**
-     * Specifies the type of an IP address or an IP prefix location.
-     */
-    enum LocationType {
-        /**
-         * The location of an IP address or an IP prefix is in local SDN network.
-         */
-        LOCAL,
-        /**
-         * The location of an IP address or an IP prefix is outside local SDN network.
-         */
-        INTERNET,
-        /**
-         * There is no route for this IP address or IP prefix.
-         */
-        NO_ROUTE
-    }
-
-    /**
-     * Specifies the type of traffic.
-     * <p>
-     * We classify traffic by the first packet of each traffic.
-     * </p>
-     */
-    enum TrafficType {
-        /**
-         * Traffic from a host located in local SDN network wants to
-         * communicate with destination host located in Internet (outside
-         * local SDN network).
-         */
-        HOST_TO_INTERNET,
-        /**
-         * Traffic from Internet wants to communicate with a host located
-         * in local SDN network.
-         */
-        INTERNET_TO_HOST,
-        /**
-         * Both the source host and destination host of a traffic are in
-         * local SDN network.
-         */
-        HOST_TO_HOST,
-        /**
-         * Traffic from Internet wants to traverse local SDN network.
-         */
-        INTERNET_TO_INTERNET,
-        /**
-         * Any traffic wants to communicate with a destination which has
-         * no route, or traffic from Internet wants to access a local private
-         * IP address.
-         */
-        DROP,
-        /**
-         * Traffic does not belong to the types above.
-         */
-        UNKNOWN
-    }
-
-    /**
      * Starts the routing service.
      */
     void start();
@@ -101,15 +42,6 @@ public interface RoutingService {
     void addFibListener(FibListener fibListener);
 
     /**
-     * Adds intent creation and submission listener.
-     *
-     * @param intentRequestListener listener to send intent creation and
-     *        submission request to
-     */
-    void addIntentRequestListener(IntentRequestListener
-                                         intentRequestListener);
-
-    /**
      * Stops the routing service.
      */
     void stop();
@@ -129,14 +61,6 @@ public interface RoutingService {
     Collection<RouteEntry> getRoutes6();
 
     /**
-     * Evaluates the location of an IP address and returns the location type.
-     *
-     * @param ipAddress the IP address to evaluate
-     * @return the IP address location type
-     */
-    LocationType getLocationType(IpAddress ipAddress);
-
-    /**
      * Finds out the route entry which has the longest matchable IP prefix.
      *
      * @param ipAddress IP address used to find out longest matchable IP prefix
@@ -145,25 +69,4 @@ public interface RoutingService {
      */
     RouteEntry getLongestMatchableRouteEntry(IpAddress ipAddress);
 
-    /**
-     * Finds out the egress connect point where to emit the first packet
-     * based on destination IP address.
-     *
-     * @param dstIpAddress the destination IP address
-     * @return the egress connect point if found, otherwise null
-     */
-    ConnectPoint getEgressConnectPoint(IpAddress dstIpAddress);
-
-    /**
-     * Routes packet reactively.
-     *
-     * @param dstIpAddress the destination IP address of a packet
-     * @param srcIpAddress the source IP address of a packet
-     * @param srcConnectPoint the connect point where a packet comes from
-     * @param srcMacAddress the source MAC address of a packet
-     */
-    void packetReactiveProcessor(IpAddress dstIpAddress,
-                                        IpAddress srcIpAddress,
-                                        ConnectPoint srcConnectPoint,
-                                        MacAddress srcMacAddress);
 }

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.onosproject.sdnip;
+package org.onosproject.routing;
 
 /**
  * Service interface exported by SDN-IP.
@@ -28,4 +28,12 @@ public interface SdnIpService {
      */
     void modifyPrimary(boolean isPrimary);
 
+    /**
+     * Gets the intent synchronization service.
+     *
+     * @return intent synchronization service
+     */
+    // TODO fix service resolution in SDN-IP
+    IntentSynchronizationService getIntentSynchronizationService();
+
 }

@@ -35,9 +35,7 @@ import org.onlab.packet.IpAddress;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onosproject.core.CoreService;
-import org.onosproject.incubator.net.intf.Interface;
 import org.onosproject.incubator.net.intf.InterfaceService;
-import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.Host;
 import org.onosproject.net.host.HostEvent;
 import org.onosproject.net.host.HostListener;
@@ -46,7 +44,6 @@ import org.onosproject.routing.BgpService;
 import org.onosproject.routing.FibEntry;
 import org.onosproject.routing.FibListener;
 import org.onosproject.routing.FibUpdate;
-import org.onosproject.routing.IntentRequestListener;
 import org.onosproject.routing.RouteEntry;
 import org.onosproject.routing.RouteListener;
 import org.onosproject.routing.RouteUpdate;
@@ -61,7 +58,6 @@ import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ConcurrentHashMap;
@@ -100,7 +96,6 @@ public class Router implements RoutingService {
     private final Map<IpAddress, MacAddress> ip2Mac = new ConcurrentHashMap<>();
 
     private FibListener fibComponent;
-    private IntentRequestListener intentRequestListener;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected CoreService coreService;
@@ -145,12 +140,6 @@ public class Router implements RoutingService {
     @Override
     public void addFibListener(FibListener fibListener) {
         this.fibComponent = checkNotNull(fibListener);
-
-    }
-
-    @Override
-    public void addIntentRequestListener(IntentRequestListener intentRequestListener) {
-        this.intentRequestListener = checkNotNull(intentRequestListener);
     }
 
     @Override
@@ -287,12 +276,10 @@ public class Router implements RoutingService {
     void addRibRoute(RouteEntry routeEntry) {
         if (routeEntry.isIp4()) {
             // IPv4
-            ribTable4.put(createBinaryString(routeEntry.prefix()),
-                    routeEntry);
+            ribTable4.put(createBinaryString(routeEntry.prefix()), routeEntry);
         } else {
             // IPv6
-            ribTable6.put(createBinaryString(routeEntry.prefix()),
-                    routeEntry);
+            ribTable6.put(createBinaryString(routeEntry.prefix()), routeEntry);
         }
     }
 
@@ -553,17 +540,6 @@ public class Router implements RoutingService {
     }
 
     @Override
-    public LocationType getLocationType(IpAddress ipAddress) {
-        if (routingConfigurationService.isIpAddressLocal(ipAddress)) {
-            return LocationType.LOCAL;
-        } else if (getLongestMatchableRouteEntry(ipAddress) != null) {
-            return LocationType.INTERNET;
-        } else {
-            return LocationType.NO_ROUTE;
-        }
-    }
-
-    @Override
     public RouteEntry getLongestMatchableRouteEntry(IpAddress ipAddress) {
         RouteEntry routeEntry = null;
         Iterable<RouteEntry> routeEntries;
@@ -587,142 +563,4 @@ public class Router implements RoutingService {
         return routeEntry;
     }
 
-    @Override
-    public ConnectPoint getEgressConnectPoint(IpAddress dstIpAddress) {
-        LocationType type = getLocationType(dstIpAddress);
-        if (type == LocationType.LOCAL) {
-            Set<Host> hosts = hostService.getHostsByIp(dstIpAddress);
-            if (!hosts.isEmpty()) {
-                return hosts.iterator().next().location();
-            } else {
-                hostService.startMonitoringIp(dstIpAddress);
-                return null;
-            }
-        } else if (type == LocationType.INTERNET) {
-            IpAddress nextHopIpAddress = null;
-            RouteEntry routeEntry = getLongestMatchableRouteEntry(dstIpAddress);
-            if (routeEntry != null) {
-                nextHopIpAddress = routeEntry.nextHop();
-                Interface it = interfaceService.getMatchingInterface(nextHopIpAddress);
-                if (it != null) {
-                    return it.connectPoint();
-                } else {
-                    return null;
-                }
-            } else {
-                return null;
-            }
-        } else {
-            return null;
-        }
-    }
-
-    @Override
-    public void packetReactiveProcessor(IpAddress dstIpAddress,
-                                        IpAddress srcIpAddress,
-                                        ConnectPoint srcConnectPoint,
-                                        MacAddress srcMacAddress) {
-        checkNotNull(dstIpAddress);
-        checkNotNull(srcIpAddress);
-        checkNotNull(srcConnectPoint);
-        checkNotNull(srcMacAddress);
-
-        //
-        // Step1: Try to update the existing intent first if it exists.
-        //
-        IpPrefix ipPrefix = null;
-        if (routingConfigurationService.isIpAddressLocal(dstIpAddress)) {
-            if (dstIpAddress.isIp4()) {
-                ipPrefix = IpPrefix.valueOf(dstIpAddress,
-                        Ip4Address.BIT_LENGTH);
-            } else {
-                ipPrefix = IpPrefix.valueOf(dstIpAddress,
-                        Ip6Address.BIT_LENGTH);
-            }
-        } else {
-            // Get IP prefix from BGP route table
-            RouteEntry routeEntry = getLongestMatchableRouteEntry(dstIpAddress);
-            if (routeEntry != null) {
-                ipPrefix = routeEntry.prefix();
-            }
-        }
-        if (ipPrefix != null
-                && intentRequestListener.mp2pIntentExists(ipPrefix)) {
-            intentRequestListener.updateExistingMp2pIntent(ipPrefix,
-                    srcConnectPoint);
-            return;
-        }
-
-        //
-        // Step2: There is no existing intent for the destination IP address.
-        // Check whether it is necessary to create a new one. If necessary then
-        // create a new one.
-        //
-        TrafficType trafficType =
-                trafficTypeClassifier(srcConnectPoint, dstIpAddress);
-
-        switch (trafficType) {
-        case HOST_TO_INTERNET:
-            // If the destination IP address is outside the local SDN network.
-            // The Step 1 has already handled it. We do not need to do anything here.
-            break;
-        case INTERNET_TO_HOST:
-            intentRequestListener.setUpConnectivityInternetToHost(dstIpAddress);
-            break;
-        case HOST_TO_HOST:
-            intentRequestListener.setUpConnectivityHostToHost(dstIpAddress,
-                    srcIpAddress, srcMacAddress, srcConnectPoint);
-            break;
-        case INTERNET_TO_INTERNET:
-            log.trace("This is transit traffic, "
-                    + "the intent should be preinstalled already");
-            break;
-        case DROP:
-            // TODO here should setUpDropPaccketIntent(...);
-            // We need a new type of intent here.
-            break;
-        case UNKNOWN:
-            log.trace("This is unknown traffic, so we do nothing");
-            break;
-        default:
-            break;
-        }
-    }
-
-    /**
-     * Classifies the traffic and return the traffic type.
-     *
-     * @param srcConnectPoint the connect point where the packet comes from
-     * @param dstIp the destination IP address in packet
-     * @return the traffic type which this packet belongs to
-     */
-    private TrafficType trafficTypeClassifier(ConnectPoint srcConnectPoint,
-                                              IpAddress dstIp) {
-        LocationType dstIpLocationType = getLocationType(dstIp);
-        Optional<Interface> srcInterface =
-                interfaceService.getInterfacesByPort(srcConnectPoint).stream().findFirst();
-
-        switch (dstIpLocationType) {
-        case INTERNET:
-            if (!srcInterface.isPresent()) {
-                return TrafficType.HOST_TO_INTERNET;
-            } else {
-                return TrafficType.INTERNET_TO_INTERNET;
-            }
-        case LOCAL:
-            if (!srcInterface.isPresent()) {
-                return TrafficType.HOST_TO_HOST;
-            } else {
-                // TODO Currently we only consider local public prefixes.
-                // In the future, we will consider the local private prefixes.
-                // If dstIpLocationType is a local private, we should return
-                // TrafficType.DROP.
-                return TrafficType.INTERNET_TO_HOST;
-            }
-        case NO_ROUTE:
-            return TrafficType.DROP;
-        default:
-            return TrafficType.UNKNOWN;
-        }
-    }
 }

@@ -18,10 +18,7 @@ package org.onosproject.routing.impl;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Service;
 import org.onlab.packet.IpAddress;
-import org.onlab.packet.MacAddress;
-import org.onosproject.net.ConnectPoint;
 import org.onosproject.routing.FibListener;
-import org.onosproject.routing.IntentRequestListener;
 import org.onosproject.routing.RouteEntry;
 import org.onosproject.routing.RoutingService;
 import org.onosproject.routing.StaticRoutingService;
@@ -49,11 +46,6 @@ public class StaticRouter implements RoutingService, StaticRoutingService {
     }
 
     @Override
-    public void addIntentRequestListener(IntentRequestListener intentRequestListener) {
-
-    }
-
-    @Override
     public void stop() {
 
     }
@@ -69,27 +61,11 @@ public class StaticRouter implements RoutingService, StaticRoutingService {
     }
 
     @Override
-    public LocationType getLocationType(IpAddress ipAddress) {
-        return null;
-    }
-
-    @Override
     public RouteEntry getLongestMatchableRouteEntry(IpAddress ipAddress) {
         return null;
     }
 
     @Override
-    public ConnectPoint getEgressConnectPoint(IpAddress dstIpAddress) {
-        return null;
-    }
-
-    @Override
-    public void packetReactiveProcessor(IpAddress dstIpAddress, IpAddress srcIpAddress,
-                                        ConnectPoint srcConnectPoint, MacAddress srcMacAddress) {
-
-    }
-
-    @Override
     public FibListener getFibListener() {
         return fibListener;
     }

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.sdnip;
+
+import org.onosproject.net.intent.Intent;
+import org.onosproject.net.intent.MultiPointToSinglePointIntent;
+import org.onosproject.net.intent.PointToPointIntent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * Utilities for dealing with intents.
+ */
+public final class IntentUtils {
+
+    private static final Logger log = LoggerFactory.getLogger(IntentUtils.class);
+
+    private IntentUtils() {
+
+    }
+
+    /**
+     * Checks if two intents represent the same value.
+     *
+     * <p>({@link Intent#equals(Object)} only checks ID equality)</p>
+     *
+     * <p>Both intents must be of the same type.</p>
+     *
+     * @param one first intent
+     * @param two second intent
+     * @return true if the two intents represent the same value, otherwise false
+     */
+    public static boolean equals(Intent one, Intent two) {
+        checkArgument(one.getClass() == two.getClass(),
+                "Intents are not the same type");
+
+        if (!(Objects.equals(one.appId(), two.appId()) &&
+                Objects.equals(one.key(), two.key()))) {
+            return false;
+        }
+
+        if (one instanceof MultiPointToSinglePointIntent) {
+            MultiPointToSinglePointIntent intent1 = (MultiPointToSinglePointIntent) one;
+            MultiPointToSinglePointIntent intent2 = (MultiPointToSinglePointIntent) two;
+
+            return Objects.equals(intent1.selector(), intent2.selector()) &&
+                    Objects.equals(intent1.treatment(), intent2.treatment()) &&
+                    Objects.equals(intent1.ingressPoints(), intent2.ingressPoints()) &&
+                    Objects.equals(intent1.egressPoint(), intent2.egressPoint());
+        } else if (one instanceof PointToPointIntent) {
+            PointToPointIntent intent1 = (PointToPointIntent) one;
+            PointToPointIntent intent2 = (PointToPointIntent) two;
+
+            return Objects.equals(intent1.selector(), intent2.selector()) &&
+                    Objects.equals(intent1.treatment(), intent2.treatment()) &&
+                    Objects.equals(intent1.ingressPoint(), intent2.ingressPoint()) &&
+                    Objects.equals(intent1.egressPoint(), intent2.egressPoint());
+        } else {
+            log.error("Unimplemented intent type");
+            return false;
+        }
+    }
+}

@@ -15,6 +15,8 @@
  */
 package org.onosproject.sdnip;
 
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
 import org.onlab.packet.IPv6;
@@ -22,16 +24,18 @@ import org.onlab.packet.IpAddress;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.TpPort;
 import org.onosproject.core.ApplicationId;
-import org.onosproject.net.config.NetworkConfigService;
 import org.onosproject.incubator.net.intf.Interface;
 import org.onosproject.incubator.net.intf.InterfaceService;
 import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.config.NetworkConfigService;
 import org.onosproject.net.flow.DefaultTrafficSelector;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
 import org.onosproject.net.flow.TrafficSelector;
 import org.onosproject.net.flow.TrafficTreatment;
 import org.onosproject.net.host.InterfaceIpAddress;
+import org.onosproject.net.intent.Key;
 import org.onosproject.net.intent.PointToPointIntent;
+import org.onosproject.routing.IntentSynchronizationService;
 import org.onosproject.routing.RoutingService;
 import org.onosproject.routing.config.BgpConfig;
 import org.slf4j.Logger;
@@ -49,18 +53,26 @@ import static com.google.common.base.Preconditions.checkNotNull;
 public class PeerConnectivityManager {
     private static final int PRIORITY_OFFSET = 1000;
 
+    private static final String SUFFIX_DST = "dst";
+    private static final String SUFFIX_SRC = "src";
+    private static final String SUFFIX_ICMP = "icmp";
+
     private static final Logger log = LoggerFactory.getLogger(
             PeerConnectivityManager.class);
 
     private static final short BGP_PORT = 179;
 
-    private final IntentSynchronizer intentSynchronizer;
+    private final IntentSynchronizationService intentSynchronizer;
     private final NetworkConfigService configService;
     private final InterfaceService interfaceService;
 
     private final ApplicationId appId;
     private final ApplicationId routerAppId;
 
+    // Just putting something random here for now. Figure out exactly what
+    // indexes we need when we start making use of them.
+    private final Multimap<BgpConfig.BgpSpeakerConfig, PointToPointIntent> peerIntents;
+
     /**
      * Creates a new PeerConnectivityManager.
      *
@@ -71,7 +83,7 @@ public class PeerConnectivityManager {
      * @param routerAppId        application ID
      */
     public PeerConnectivityManager(ApplicationId appId,
-                                   IntentSynchronizer intentSynchronizer,
+                                   IntentSynchronizationService intentSynchronizer,
                                    NetworkConfigService configService,
                                    ApplicationId routerAppId,
                                    InterfaceService interfaceService) {
@@ -80,6 +92,8 @@ public class PeerConnectivityManager {
         this.configService = configService;
         this.routerAppId = routerAppId;
         this.interfaceService = interfaceService;
+
+        peerIntents = HashMultimap.create();
     }
 
     /**
@@ -100,8 +114,6 @@ public class PeerConnectivityManager {
      * BGP speakers and external BGP peers.
      */
     private void setUpConnectivity() {
-        List<PointToPointIntent> intents = new ArrayList<>();
-
         BgpConfig config = configService.getConfig(routerAppId, RoutingService.CONFIG_CLASS);
 
         if (config == null) {
@@ -113,11 +125,12 @@ public class PeerConnectivityManager {
             log.debug("Start to set up BGP paths for BGP speaker: {}",
                     bgpSpeaker);
 
-            intents.addAll(buildSpeakerIntents(bgpSpeaker));
-        }
+            buildSpeakerIntents(bgpSpeaker).forEach(i -> {
+                peerIntents.put(bgpSpeaker, i);
+                intentSynchronizer.submit(i);
+            });
 
-        // Submit all the intents.
-        intentSynchronizer.submitPeerIntents(intents);
+        }
     }
 
     private Collection<PointToPointIntent> buildSpeakerIntents(BgpConfig.BgpSpeakerConfig speaker) {
@@ -167,8 +180,8 @@ public class PeerConnectivityManager {
         List<PointToPointIntent> intents = new ArrayList<>();
 
         TrafficTreatment treatment = DefaultTrafficTreatment.emptyTreatment();
-
         TrafficSelector selector;
+        Key key;
 
         byte tcpProtocol;
         byte icmpProtocol;
@@ -188,8 +201,11 @@ public class PeerConnectivityManager {
                 null,
                 BGP_PORT);
 
+        key = buildKey(ipOne, ipTwo, SUFFIX_DST);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portOne)
@@ -204,8 +220,11 @@ public class PeerConnectivityManager {
                 BGP_PORT,
                 null);
 
+        key = buildKey(ipOne, ipTwo, SUFFIX_SRC);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portOne)
@@ -220,8 +239,11 @@ public class PeerConnectivityManager {
                 null,
                 BGP_PORT);
 
+        key = buildKey(ipTwo, ipOne, SUFFIX_DST);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portTwo)
@@ -236,8 +258,11 @@ public class PeerConnectivityManager {
                 BGP_PORT,
                 null);
 
+        key = buildKey(ipTwo, ipOne, SUFFIX_SRC);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portTwo)
@@ -252,8 +277,11 @@ public class PeerConnectivityManager {
                 null,
                 null);
 
+        key = buildKey(ipOne, ipTwo, SUFFIX_ICMP);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portOne)
@@ -268,8 +296,11 @@ public class PeerConnectivityManager {
                 null,
                 null);
 
+        key = buildKey(ipTwo, ipOne, SUFFIX_ICMP);
+
         intents.add(PointToPointIntent.builder()
                 .appId(appId)
+                .key(key)
                 .selector(selector)
                 .treatment(treatment)
                 .ingressPoint(portTwo)
@@ -316,4 +347,27 @@ public class PeerConnectivityManager {
         return builder.build();
     }
 
+    /**
+     * Builds an intent Key for a point-to-point intent based off the source
+     * and destination IP address, as well as a suffix String to distinguish
+     * between different types of intents between the same source and
+     * destination.
+     *
+     * @param srcIp source IP address
+     * @param dstIp destination IP address
+     * @param suffix suffix string
+     * @return
+     */
+    private Key buildKey(IpAddress srcIp, IpAddress dstIp, String suffix) {
+        String keyString = new StringBuilder()
+                .append(srcIp.toString())
+                .append("-")
+                .append(dstIp.toString())
+                .append("-")
+                .append(suffix)
+                .toString();
+
+        return Key.of(keyString, appId);
+    }
+
 }

@@ -32,7 +32,9 @@ import org.onosproject.net.config.NetworkConfigService;
 import org.onosproject.incubator.net.intf.InterfaceService;
 import org.onosproject.net.host.HostService;
 import org.onosproject.net.intent.IntentService;
+import org.onosproject.routing.IntentSynchronizationService;
 import org.onosproject.routing.RoutingService;
+import org.onosproject.routing.SdnIpService;
 import org.onosproject.routing.config.RoutingConfigurationService;
 import org.slf4j.Logger;
 
@@ -79,6 +81,7 @@ public class SdnIp implements SdnIpService {
 
     private IntentSynchronizer intentSynchronizer;
     private PeerConnectivityManager peerConnectivity;
+    private SdnIpFib fib;
 
     private LeadershipEventListener leadershipEventListener =
         new InnerLeadershipEventListener();
@@ -93,10 +96,7 @@ public class SdnIp implements SdnIpService {
 
         localControllerNode = clusterService.getLocalNode();
 
-        intentSynchronizer = new IntentSynchronizer(appId, intentService,
-                                                    hostService,
-                                                    config,
-                                                    interfaceService);
+        intentSynchronizer = new IntentSynchronizer(appId, intentService);
         intentSynchronizer.start();
 
         peerConnectivity = new PeerConnectivityManager(appId,
@@ -106,8 +106,9 @@ public class SdnIp implements SdnIpService {
                                                        interfaceService);
         peerConnectivity.start();
 
-        routingService.addFibListener(intentSynchronizer);
-        routingService.addIntentRequestListener(intentSynchronizer);
+        fib = new SdnIpFib(appId, interfaceService, intentSynchronizer);
+
+        routingService.addFibListener(fib);
         routingService.start();
 
         leadershipService.addListener(leadershipEventListener);
@@ -131,6 +132,11 @@ public class SdnIp implements SdnIpService {
         intentSynchronizer.leaderChanged(isPrimary);
     }
 
+    @Override
+    public IntentSynchronizationService getIntentSynchronizationService() {
+        return intentSynchronizer;
+    }
+
     /**
      * Converts DPIDs of the form xx:xx:xx:xx:xx:xx:xx to OpenFlow provider
      * device URIs.

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.sdnip;
+
+import com.google.common.collect.ImmutableList;
+import org.onlab.packet.Ethernet;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.MacAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.incubator.net.intf.Interface;
+import org.onosproject.incubator.net.intf.InterfaceService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.intent.Constraint;
+import org.onosproject.net.intent.Key;
+import org.onosproject.net.intent.MultiPointToSinglePointIntent;
+import org.onosproject.net.intent.constraint.PartialFailureConstraint;
+import org.onosproject.routing.FibListener;
+import org.onosproject.routing.FibUpdate;
+import org.onosproject.routing.IntentSynchronizationService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * FIB component of SDN-IP.
+ */
+public class SdnIpFib implements FibListener {
+    private Logger log = LoggerFactory.getLogger(getClass());
+
+    private static final int PRIORITY_OFFSET = 100;
+    private static final int PRIORITY_MULTIPLIER = 5;
+    protected static final ImmutableList<Constraint> CONSTRAINTS
+            = ImmutableList.of(new PartialFailureConstraint());
+
+    private final Map<IpPrefix, MultiPointToSinglePointIntent> routeIntents;
+
+    private final ApplicationId appId;
+    private final InterfaceService interfaceService;
+    private final IntentSynchronizationService intentSynchronizer;
+
+    /**
+     * Class constructor.
+     *
+     * @param appId application ID to use when generating intents
+     * @param interfaceService interface service
+     * @param intentSynchronizer intent synchronizer
+     */
+    public SdnIpFib(ApplicationId appId, InterfaceService interfaceService,
+                    IntentSynchronizationService intentSynchronizer) {
+        routeIntents = new ConcurrentHashMap<>();
+
+        this.appId = appId;
+        this.interfaceService = interfaceService;
+        this.intentSynchronizer = intentSynchronizer;
+    }
+
+
+    @Override
+    public void update(Collection<FibUpdate> updates, Collection<FibUpdate> withdraws) {
+        int submitCount = 0, withdrawCount = 0;
+        //
+        // NOTE: Semantically, we MUST withdraw existing intents before
+        // submitting new intents.
+        //
+        synchronized (this) {
+            MultiPointToSinglePointIntent intent;
+
+            //
+            // Prepare the Intent batch operations for the intents to withdraw
+            //
+            for (FibUpdate withdraw : withdraws) {
+                checkArgument(withdraw.type() == FibUpdate.Type.DELETE,
+                        "FibUpdate with wrong type in withdraws list");
+
+                IpPrefix prefix = withdraw.entry().prefix();
+                intent = routeIntents.remove(prefix);
+                if (intent == null) {
+                    log.trace("SDN-IP No intent in routeIntents to delete " +
+                            "for prefix: {}", prefix);
+                    continue;
+                }
+                intentSynchronizer.withdraw(intent);
+                withdrawCount++;
+            }
+
+            //
+            // Prepare the Intent batch operations for the intents to submit
+            //
+            for (FibUpdate update : updates) {
+                checkArgument(update.type() == FibUpdate.Type.UPDATE,
+                        "FibUpdate with wrong type in updates list");
+
+                IpPrefix prefix = update.entry().prefix();
+                intent = generateRouteIntent(prefix, update.entry().nextHopIp(),
+                        update.entry().nextHopMac());
+
+                if (intent == null) {
+                    // This preserves the old semantics - if an intent can't be
+                    // generated, we don't do anything with that prefix. But
+                    // perhaps we should withdraw the old intent anyway?
+                    continue;
+                }
+
+                routeIntents.put(prefix, intent);
+                intentSynchronizer.submit(intent);
+                submitCount++;
+            }
+
+            log.debug("SDN-IP submitted {}/{}, withdrew = {}/{}", submitCount,
+                    updates.size(), withdrawCount, withdraws.size());
+        }
+    }
+
+    /**
+     * Generates a route intent for a prefix, the next hop IP address, and
+     * the next hop MAC address.
+     * <p/>
+     * This method will find the egress interface for the intent.
+     * Intent will match dst IP prefix and rewrite dst MAC address at all other
+     * border switches, then forward packets according to dst MAC address.
+     *
+     * @param prefix            IP prefix of the route to add
+     * @param nextHopIpAddress  IP address of the next hop
+     * @param nextHopMacAddress MAC address of the next hop
+     * @return the generated intent, or null if no intent should be submitted
+     */
+    private MultiPointToSinglePointIntent generateRouteIntent(
+            IpPrefix prefix,
+            IpAddress nextHopIpAddress,
+            MacAddress nextHopMacAddress) {
+
+        // Find the attachment point (egress interface) of the next hop
+        Interface egressInterface = interfaceService.getMatchingInterface(nextHopIpAddress);
+        if (egressInterface == null) {
+            log.warn("No outgoing interface found for {}",
+                    nextHopIpAddress);
+            return null;
+        }
+
+        // Generate the intent itself
+        Set<ConnectPoint> ingressPorts = new HashSet<>();
+        ConnectPoint egressPort = egressInterface.connectPoint();
+        log.debug("Generating intent for prefix {}, next hop mac {}",
+                prefix, nextHopMacAddress);
+
+        for (Interface intf : interfaceService.getInterfaces()) {
+            // TODO this should be only peering interfaces
+            if (!intf.connectPoint().equals(egressInterface.connectPoint())) {
+                ConnectPoint srcPort = intf.connectPoint();
+                ingressPorts.add(srcPort);
+            }
+        }
+
+        // Match the destination IP prefix at the first hop
+        TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
+        if (prefix.isIp4()) {
+            selector.matchEthType(Ethernet.TYPE_IPV4);
+            selector.matchIPDst(prefix);
+        } else {
+            selector.matchEthType(Ethernet.TYPE_IPV6);
+            selector.matchIPv6Dst(prefix);
+        }
+
+        // Rewrite the destination MAC address
+        TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder()
+                .setEthDst(nextHopMacAddress);
+        if (!egressInterface.vlan().equals(VlanId.NONE)) {
+            treatment.setVlanId(egressInterface.vlan());
+            // If we set VLAN ID, we have to make sure a VLAN tag exists.
+            // TODO support no VLAN -> VLAN routing
+            selector.matchVlanId(VlanId.ANY);
+        }
+
+        int priority =
+                prefix.prefixLength() * PRIORITY_MULTIPLIER + PRIORITY_OFFSET;
+        Key key = Key.of(prefix.toString(), appId);
+        return MultiPointToSinglePointIntent.builder()
+                .appId(appId)
+                .key(key)
+                .selector(selector.build())
+                .treatment(treatment.build())
+                .ingressPoints(ingressPorts)
+                .egressPoint(egressPort)
+                .priority(priority)
+                .constraints(CONSTRAINTS)
+                .build();
+    }
+
+}

@@ -18,7 +18,7 @@ package org.onosproject.sdnip.cli;
 import org.apache.karaf.shell.commands.Argument;
 import org.apache.karaf.shell.commands.Command;
 import org.onosproject.cli.AbstractShellCommand;
-import org.onosproject.sdnip.SdnIpService;
+import org.onosproject.routing.SdnIpService;
 
 /**
  * Command to change whether this SDNIP instance is primary or not.

@@ -19,7 +19,6 @@ import com.google.common.collect.Sets;
 import org.junit.Before;
 import org.junit.Ignore;
 import org.junit.Test;
-import org.onlab.junit.TestUtils;
 import org.onlab.junit.TestUtils.TestUtilsException;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
@@ -28,13 +27,14 @@ import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.TpPort;
 import org.onlab.packet.VlanId;
+import org.onosproject.TestApplicationId;
 import org.onosproject.core.ApplicationId;
-import org.onosproject.net.config.NetworkConfigService;
 import org.onosproject.incubator.net.intf.Interface;
 import org.onosproject.incubator.net.intf.InterfaceService;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.PortNumber;
+import org.onosproject.net.config.NetworkConfigService;
 import org.onosproject.net.flow.DefaultTrafficSelector;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
 import org.onosproject.net.flow.TrafficSelector;
@@ -42,8 +42,9 @@ import org.onosproject.net.flow.TrafficTreatment;
 import org.onosproject.net.host.InterfaceIpAddress;
 import org.onosproject.net.intent.AbstractIntentTest;
 import org.onosproject.net.intent.Intent;
-import org.onosproject.net.intent.IntentService;
+import org.onosproject.net.intent.Key;
 import org.onosproject.net.intent.PointToPointIntent;
+import org.onosproject.routing.IntentSynchronizationService;
 import org.onosproject.routing.config.BgpConfig;
 import org.onosproject.routing.config.BgpPeer;
 import org.onosproject.routing.config.BgpSpeaker;
@@ -71,26 +72,15 @@ import static org.onosproject.sdnip.TestIntentServiceHelper.eqExceptId;
  */
 public class PeerConnectivityManagerTest extends AbstractIntentTest {
 
-    private static final ApplicationId APPID = new ApplicationId() {
-        @Override
-        public short id() {
-            return 0;
-        }
-
-        @Override
-        public String name() {
-            return "foo";
-        }
-    };
+    private static final ApplicationId APPID = TestApplicationId.create("foo");
 
     private static final ApplicationId CONFIG_APP_ID = APPID;
 
     private PeerConnectivityManager peerConnectivityManager;
-    private IntentSynchronizer intentSynchronizer;
+    private IntentSynchronizationService intentSynchronizer;
     private RoutingConfigurationService routingConfig;
     private InterfaceService interfaceService;
     private NetworkConfigService networkConfigService;
-    private IntentService intentService;
 
     private Set<BgpConfig.BgpSpeakerConfig> bgpSpeakers;
     private Map<String, Interface> interfaces;
@@ -98,8 +88,6 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
 
     private BgpConfig bgpConfig;
 
-    private Map<String, Interface> configuredInterfaces;
-    private Map<IpAddress, BgpPeer> configuredPeers;
     private List<PointToPointIntent> intentList;
 
     private final String dpid1 = "00:00:00:00:00:00:00:01";
@@ -136,7 +124,7 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
         // These will set expectations on routingConfig and interfaceService
         bgpSpeakers = setUpBgpSpeakers();
         interfaces = Collections.unmodifiableMap(setUpInterfaces());
-        peers = Collections.unmodifiableMap(setUpPeers());
+        peers = setUpPeers();
 
         initPeerConnectivity();
         intentList = setUpIntentList();
@@ -169,11 +157,11 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
      * Sets up logical interfaces, which emulate the configured interfaces
      * in SDN-IP application.
      *
-     * @return configured interfaces as a MAP from Interface name to Interface
+     * @return configured interfaces as a map from interface name to Interface
      */
     private Map<String, Interface> setUpInterfaces() {
 
-        configuredInterfaces = new HashMap<>();
+        Map<String, Interface> configuredInterfaces = new HashMap<>();
 
         String interfaceSw1Eth1 = "s1-eth1";
         InterfaceIpAddress ia1 =
@@ -242,7 +230,7 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
      */
     private Map<IpAddress, BgpPeer> setUpPeers() {
 
-        configuredPeers = new HashMap<>();
+        Map<IpAddress, BgpPeer> configuredPeers = new HashMap<>();
 
         String peerSw1Eth1 = "192.168.10.1";
         configuredPeers.put(IpAddress.valueOf(peerSw1Eth1),
@@ -266,14 +254,12 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
      * @return point to point intent list
      */
     private List<PointToPointIntent> setUpIntentList() {
-
         intentList = new ArrayList<>();
 
         setUpBgpIntents();
         setUpIcmpIntents();
 
         return intentList;
-
     }
 
     /**
@@ -306,8 +292,12 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
             builder.matchTcpDst(TpPort.tpPort(dstTcpPort));
         }
 
+        Key key = Key.of(srcPrefix.split("/")[0] + "-" + dstPrefix.split("/")[0]
+                + "-" + ((srcTcpPort == null) ? "dst" : "src"), APPID);
+
         PointToPointIntent intent = PointToPointIntent.builder()
                 .appId(APPID)
+                .key(key)
                 .selector(builder.build())
                 .treatment(noTreatment)
                 .ingressPoint(srcConnectPoint)
@@ -392,8 +382,12 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
                 .matchIPDst(IpPrefix.valueOf(dstPrefix))
                 .build();
 
+        Key key = Key.of(srcPrefix.split("/")[0] + "-" + dstPrefix.split("/")[0]
+                + "-" + "icmp", APPID);
+
         PointToPointIntent intent = PointToPointIntent.builder()
                 .appId(APPID)
+                .key(key)
                 .selector(selector)
                 .treatment(noTreatment)
                 .ingressPoint(srcConnectPoint)
@@ -434,19 +428,14 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
         expect(routingConfig.getBgpPeers()).andReturn(peers).anyTimes();
         expect(bgpConfig.bgpSpeakers()).andReturn(bgpSpeakers).anyTimes();
         replay(bgpConfig);
-        expect(networkConfigService.getConfig(APPID, BgpConfig.class)).andReturn(bgpConfig).anyTimes();
+        expect(networkConfigService.getConfig(APPID, BgpConfig.class))
+                .andReturn(bgpConfig).anyTimes();
         replay(networkConfigService);
         replay(routingConfig);
         replay(interfaceService);
 
-        intentService = createMock(IntentService.class);
-        replay(intentService);
-
-        intentSynchronizer = new IntentSynchronizer(APPID, intentService,
-                                                    null, routingConfig,
-                                                    interfaceService);
-        intentSynchronizer.leaderChanged(true);
-        TestUtils.setField(intentSynchronizer, "isActivatedLeader", true);
+        intentSynchronizer = createMock(IntentSynchronizationService.class);
+        replay(intentSynchronizer);
 
         peerConnectivityManager =
             new PeerConnectivityManager(APPID, intentSynchronizer,
@@ -464,20 +453,18 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
      */
     @Test
     public void testConnectionSetup() {
-
-        reset(intentService);
+        reset(intentSynchronizer);
 
         // Setup the expected intents
         for (Intent intent : intentList) {
-            intentService.submit(eqExceptId(intent));
+            intentSynchronizer.submit(eqExceptId(intent));
         }
-        replay(intentService);
+        replay(intentSynchronizer);
 
         // Running the interface to be tested.
         peerConnectivityManager.start();
 
-        verify(intentService);
-
+        verify(intentSynchronizer);
     }
 
     /**
@@ -488,7 +475,7 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
         reset(interfaceService);
 
         expect(interfaceService.getInterfaces()).andReturn(
-                Sets.<Interface>newHashSet()).anyTimes();
+                Sets.newHashSet()).anyTimes();
         expect(interfaceService.getInterfacesByPort(s2Eth1))
                 .andReturn(Collections.emptySet()).anyTimes();
         expect(interfaceService.getInterfacesByPort(s1Eth1))
@@ -508,10 +495,10 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
 
         replay(interfaceService);
 
-        reset(intentService);
-        replay(intentService);
+        reset(intentSynchronizer);
+        replay(intentSynchronizer);
         peerConnectivityManager.start();
-        verify(intentService);
+        verify(intentSynchronizer);
     }
 
     /**
@@ -527,10 +514,10 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
         expect(routingConfig.getBgpPeers()).andReturn(peers).anyTimes();
         replay(routingConfig);
 
-        reset(intentService);
-        replay(intentService);
+        reset(intentSynchronizer);
+        replay(intentSynchronizer);
         peerConnectivityManager.start();
-        verify(intentService);
+        verify(intentSynchronizer);
     }
 
     /**
@@ -540,7 +527,7 @@ public class PeerConnectivityManagerTest extends AbstractIntentTest {
     @Test
     public void testNoPeerInterface() {
         String peerSw100Eth1 = "192.168.200.1";
-        configuredPeers.put(IpAddress.valueOf(peerSw100Eth1),
+        peers.put(IpAddress.valueOf(peerSw100Eth1),
                 new BgpPeer("00:00:00:00:00:00:01:00", 1, peerSw100Eth1));
         testConnectionSetup();
     }

@@ -17,7 +17,6 @@ package org.onosproject.sdnip;
 
 import org.easymock.IArgumentMatcher;
 import org.onosproject.net.intent.Intent;
-import org.onosproject.sdnip.IntentSynchronizer.IntentKey;
 
 import static org.easymock.EasyMock.reportMatcher;
 
@@ -53,8 +52,6 @@ public final class TestIntentServiceHelper {
      * the solution is to use an EasyMock matcher that verifies that all the
      * value properties of the provided intent match the expected values, but
      * ignores the intent ID when testing equality.
-     *
-     * FIXME this currently does not take key into account
      */
     private static final class IdAgnosticIntentMatcher implements
                 IArgumentMatcher {
@@ -86,9 +83,7 @@ public final class TestIntentServiceHelper {
             Intent providedIntent = (Intent) object;
             providedString = providedIntent.toString();
 
-            IntentKey thisIntentKey = new IntentKey(intent);
-            IntentKey providedIntentKey = new IntentKey(providedIntent);
-            return thisIntentKey.equals(providedIntentKey);
+            return IntentUtils.equals(intent, providedIntent);
         }
     }
 

@@ -574,8 +574,10 @@ public class EventuallyConsistentMapImpl<K, V>
             return;
         }
         try {
-            log.debug("Received anti-entropy advertisement from {} for {} with {} entries in it",
+            if (log.isTraceEnabled()) {
+                log.trace("Received anti-entropy advertisement from {} for {} with {} entries in it",
                         mapName, ad.sender(), ad.digest().size());
+            }
             antiEntropyCheckLocalItems(ad).forEach(this::notifyListeners);
 
             if (!lightweightAntiEntropy) {