Log Satel disconnections

filters.go

@@ -79,3 +79,17 @@ func FilterByLastSeen(ev <-chan satel.Event, dataStore *DataStore, logger *log.L
 
 	return returnChan
 }
+
+func CallWhenClosed(ev <-chan satel.Event, cbk func()) <-chan satel.Event {
+	returnChan := make(chan satel.Event)
+
+	go func() {
+		for e := range ev {
+			returnChan <- e
+		}
+		cbk()
+		close(returnChan)
+	}()
+
+	return returnChan
+}

main.go

@@ -147,7 +147,9 @@ func main() {
 	go CloseSatelOnCtrlC(s)
 
 	for e := range FilterByIndex(FilterByType(
-		FilterByLastSeen(s.Events, &dataStore, log.New(os.Stderr, "FilterByLastSeen", log.Lmicroseconds)),
+		FilterByLastSeen(
+			CallWhenClosed(s.Events, func() { logger.Print("Satel disconnected.") }),
+			&dataStore, log.New(os.Stderr, "FilterByLastSeen", log.Lmicroseconds)),
 		allowedTypes),
 		allowedIndexes) {
 		logger.Print("Received change from SATEL: ", e)