Support notifying components for config reload, listen for SIGHUP

src/yggdrasil/switch.go

@@ -162,6 +162,7 @@ type switchData struct {
 // All the information stored by the switch.
 type switchTable struct {
 	core              *Core
+	reconfigure       chan bool
 	key               crypto.SigPubKey           // Our own key
 	time              time.Time                  // Time when locator.tstamp was last updated
 	drop              map[crypto.SigPubKey]int64 // Tstamp associated with a dropped root
@@ -184,6 +185,7 @@ const SwitchQueueTotalMinSize = 4 * 1024 * 1024
 func (t *switchTable) init(core *Core, key crypto.SigPubKey) {
 	now := time.Now()
 	t.core = core
+	t.reconfigure = make(chan bool, 1)
 	t.key = key
 	locator := switchLocator{root: key, tstamp: now.Unix()}
 	peers := make(map[switchPort]peerInfo)
@@ -808,6 +810,11 @@ func (t *switchTable) doWorker() {
 			}
 		case f := <-t.admin:
 			f()
+		case _ = <-t.reconfigure:
+			t.core.configMutex.RLock()
+			t.core.log.Println("Notified: switchTable")
+			t.core.configMutex.RUnlock()
+			continue
 		}
 	}
 }