paths should from bgp peer connect points for Internet-to-local traffic

Change-Id: I04c7f5b8efc9279ee3e15fb27435a2201cccb5f1

@@ -81,6 +81,14 @@ public interface RoutingConfigurationService {
     Set<Interface> getInterfaces();
 
     /**
+     * Retrieves the entire set of connect points connected to BGP peers in the
+     * network.
+     *
+     * @return the set of connect points connected to BGP peers
+     */
+    public Set<ConnectPoint> getBgpPeerConnectPoints();
+
+    /**
      * Retrieves the interface associated with the given connect point.
      *
      * @param connectPoint the connect point to retrieve interface information

@@ -71,6 +71,7 @@ public class RoutingConfigurationImpl implements RoutingConfigurationService {
     private Map<String, BgpSpeaker> bgpSpeakers = new ConcurrentHashMap<>();
     private Map<IpAddress, BgpPeer> bgpPeers = new ConcurrentHashMap<>();
     private Set<IpAddress> gatewayIpAddresses = new HashSet<>();
+    private Set<ConnectPoint> bgpPeerConnectPoints = new HashSet<>();
 
     private InvertedRadixTree<LocalIpPrefixEntry>
             localPrefixTable4 = new ConcurrentInvertedRadixTree<>(
@@ -108,6 +109,7 @@ public class RoutingConfigurationImpl implements RoutingConfigurationService {
             }
             for (BgpPeer peer : config.getPeers()) {
                 bgpPeers.put(peer.ipAddress(), peer);
+                bgpPeerConnectPoints.add(peer.connectPoint());
             }
 
             for (LocalIpPrefixEntry entry : config.getLocalIp4PrefixEntries()) {
@@ -154,6 +156,11 @@ public class RoutingConfigurationImpl implements RoutingConfigurationService {
     }
 
     @Override
+    public Set<ConnectPoint> getBgpPeerConnectPoints() {
+        return Collections.unmodifiableSet(bgpPeerConnectPoints);
+    }
+
+    @Override
     public Interface getInterface(ConnectPoint connectPoint) {
         return hostAdaptor.getInterface(connectPoint);
     }

@@ -381,11 +381,9 @@ public class IntentSynchronizer implements FibListener, IntentRequestListener {
     @Override
     public void setUpConnectivityInternetToHost(IpAddress hostIpAddress) {
         checkNotNull(hostIpAddress);
-        Set<ConnectPoint> ingressPoints = new HashSet<ConnectPoint>();
-        for (Interface intf : configService.getInterfaces()) {
-            ConnectPoint srcPoint = intf.connectPoint();
-            ingressPoints.add(srcPoint);
-        }
+        Set<ConnectPoint> ingressPoints =
+                configService.getBgpPeerConnectPoints();
+
         TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
 
         if (hostIpAddress.isIp4()) {