Read and remove routes based on registry event deltas

network/router/default_router.go

@@ -158,28 +158,43 @@ func (r *router) watchServices(w registry.Watcher) error {
 			break
 		}
 
-		log.Logf("r.watchServices() new service event: %s", res.Service.Name)
+		log.Logf("r.watchServices() new service event: Action: %s Service: %v", res.Action, res.Service)
 
+		switch res.Action {
+		case "create":
+			// range over the flat slice of nodes
+			for _, node := range res.Service.Nodes {
+				gateway := node.Address
+				if node.Port > 0 {
+					gateway = fmt.Sprintf("%s:%d", node.Address, node.Port)
+				}
 				route := Route{
 					Destination: res.Service.Name,
+					Gateway:     gateway,
 					Router:      r.opts.Address,
 					Network:     r.opts.Network,
 					Metric:      DefaultLocalMetric,
 				}
-
-		switch res.Action {
-		case "create":
-			// only return error if the route is not duplicate, but something else has failed
 				if err := r.opts.Table.Add(route); err != nil && err != ErrDuplicateRoute {
-				return fmt.Errorf("failed adding route for service %v: %s", res.Service.Name, err)
+					return fmt.Errorf("error adding route for service %s: %s", res.Service.Name, err)
+				}
 			}
 		case "delete":
+			for _, node := range res.Service.Nodes {
+				route := Route{
+					Destination: res.Service.Name,
+					Gateway:     node.Address,
+					Router:      r.opts.Address,
+					Network:     r.opts.Network,
+					Metric:      DefaultLocalMetric,
+				}
 				// only return error if the route is not in the table, but something else has failed
 				if err := r.opts.Table.Delete(route); err != nil && err != ErrRouteNotFound {
 					return fmt.Errorf("failed adding route for service %v: %s", res.Service.Name, err)
 				}
 			}
 		}
+	}
 
 	return watchErr
 }