simple indication of online/offline status

admin/data/index.html

@@ -61,7 +61,7 @@ <h1>Viewing All Routes</h1>
                 </tr>
               </thead>
               <tbody>
-                <tr ng-repeat="r in routes">
+                <tr ng-repeat="r in routes" ng-class="{ 'danger' : !r.Online }">
                   <td>{{r.Key}}</td>
                   <td>{{r.Patt}}</td>
                   <td>{{r.Addr}}</td>

routing/routing.go

@@ -19,6 +19,7 @@ type Route struct {
 	Addr       string         // tcp dest
 	spoolDir   string         // where to store spool files (if enabled)
 	Spool      bool           // spool metrics to disk while endpoint down?
+	Online     bool           // state of connection online/offline
 	instrument *statsd.Client // to submit stats to
 
 	// set automatically in init, passed on in copy
@@ -60,6 +61,7 @@ func (route *Route) Copy() *Route {
 		Spool:      route.Spool,
 		instrument: route.instrument,
 		Reg:        route.Reg,
+		Online:        route.Online,
 	}
 }
 
@@ -183,6 +185,7 @@ func (route *Route) relay() {
 			}
 		case new_conn := <-route.connUpdates:
 			conn = new_conn // can be nil and that's ok (it means we had to [re]connect but couldn't)
+			route.Online = conn != nil
 		case <-ticker.C: // periodically try to bring connection (back) up, if we have to, and no other connect is happening
 			if conn == nil && conn_updates == 0 {
 				go route.updateConn(route.Addr)