From fef133ba130d6d78b58ce0b42b351b06e89d6a82 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 27 Mar 2016 21:20:55 +0200
Subject: added channel to request server status updates


diff --git a/src/rhctl/playout_server.go b/src/rhctl/playout_server.go
index 96e6fb7..bc31019 100644
--- a/src/rhctl/playout_server.go
+++ b/src/rhctl/playout_server.go
@@ -50,15 +50,16 @@ type ServerStatus struct {
 }
 
 type PlayoutServer struct {
-	name        string
-	control     *SerialPort
-	heartbeat   *SerialPort
-	hbtimeout   time.Duration
-	hbtimer     *time.Timer
-	hbthreshold uint
-	hbcnt       uint
-	status      ServerStatus
-	Updates     chan ServerStatus
+	name          string
+	control       *SerialPort
+	heartbeat     *SerialPort
+	hbtimeout     time.Duration
+	hbtimer       *time.Timer
+	hbthreshold   uint
+	hbcnt         uint
+	status        ServerStatus
+	Updates       chan ServerStatus
+	UpdateRequest chan bool
 }
 
 func (srv *PlayoutServer) handleControl(data string) {
@@ -89,6 +90,9 @@ func (srv *PlayoutServer) handleHeartbeat(data string) {
 	if old != srv.status.Health {
 		srv.Updates <- srv.status
 		rhl.Printf("Server(%s): is back from the dead!", srv.name)
+		if srv.status.Channel == "" {
+			srv.control.tx <- "channel ?"
+		}
 	}
 }
 
@@ -117,6 +121,12 @@ func (srv *PlayoutServer) Run() {
 			srv.handleHeartbeat(data)
 		case <-srv.hbtimer.C:
 			srv.handleHBTimeout()
+		case <-srv.UpdateRequest:
+			if srv.status.Health == ServerDead {
+				srv.Updates <- srv.status
+			} else {
+				srv.control.tx <- "channel ?"
+			}
 		}
 	}
 }
@@ -135,12 +145,13 @@ func ServerInit(name string, conf *Config) (srv *PlayoutServer, err error) {
 	srv.status.Health = ServerDead
 	srv.status.Channel = ""
 	srv.Updates = make(chan ServerStatus, 8)
+	srv.UpdateRequest = make(chan bool, 8)
 
-	if srv.control, err = SerialOpen(conf.Servers[name].ControlDevice, conf.Servers[name].ControlBaudrate, "\r\n"); err != nil {
+	if srv.control, err = SerialOpen(conf.Servers[name].ControlDevice, conf.Servers[name].ControlBaudrate, "\n"); err != nil {
 		err = fmt.Errorf("Server(%s): error opening control port: %s", srv.name, err)
 		return
 	}
-	if srv.heartbeat, err = SerialOpen(conf.Servers[name].HeartbeatDevice, conf.Servers[name].HeartbeatBaudrate, "\r\n"); err != nil {
+	if srv.heartbeat, err = SerialOpen(conf.Servers[name].HeartbeatDevice, conf.Servers[name].HeartbeatBaudrate, "\n"); err != nil {
 		err = fmt.Errorf("Server(%s): error opening heartbeat port: %s", srv.name, err)
 		return
 	}
-- 
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