From f067dae87d4d95fb05de64da27c2c35a68d37c2a Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Thu, 22 Sep 2016 21:45:01 +0200
Subject: playout server use a single serial device now


diff --git a/sample-config.toml b/sample-config.toml
index 09bb5ad..5597ff2 100644
--- a/sample-config.toml
+++ b/sample-config.toml
@@ -1,6 +1,6 @@
 [audioswitch]
 dev = "/dev/ttyUSB0"
-baud = 19200
+baud = 38400
 timeout = "500ms"
 unit = 0
 inputs = [ { number = 1, server = "master", channel = "main" },
@@ -11,16 +11,12 @@ inputs = [ { number = 1, server = "master", channel = "main" },
 [servers]
 
   [servers.master]
-  ctrl_dev = "/dev/ttyUSB1"
-  ctrl_baud = 38400
-  heartbeat_dev = "/dev/ttyUSB2"
-  heartbeat_baud = 19200
+  dev = "/dev/ttyUSB1"
+  baud = 38400
 
   # [servers.standby]
-  # ctrl_dev = "/dev/ttyUSB3"
-  # ctrl_baud = 38400
-  # heartbeat_dev = "/dev/ttyUSB4"
-  # heartbeat_baud = 19200
+  # dev = "/dev/ttyUSB2"
+  # baud = 38400
 
 [clients]
 
diff --git a/src/rhctl/conf.go b/src/rhctl/conf.go
index 3cfaeac..8df11f0 100644
--- a/src/rhctl/conf.go
+++ b/src/rhctl/conf.go
@@ -67,10 +67,8 @@ type Config struct {
 	}
 
 	Servers map[string]struct {
-		ControlDevice      string   `toml:"ctrl_dev"`
-		ControlBaudrate    Baudrate `toml:"ctrl_baud"`
-		HeartbeatDevice    string   `toml:"heartbeat_dev"`
-		HeartbeatBaudrate  Baudrate `toml:"heartbeat_baud"`
+		Device             string   `toml:"dev"`
+		Baudrate           Baudrate `toml:"baud"`
 		HeartbeatTimeout   Duration `toml:"heartbeat_timeout"`
 		HeartbeatThreshold uint     `toml:"heartbeat_threshold"`
 	}
diff --git a/src/rhctl/playout_server.go b/src/rhctl/playout_server.go
index fbcfeff..5fc1dfd 100644
--- a/src/rhctl/playout_server.go
+++ b/src/rhctl/playout_server.go
@@ -53,8 +53,7 @@ type ServerState struct {
 
 type PlayoutServer struct {
 	name          string
-	control       *SerialPort
-	heartbeat     *SerialPort
+	device        *SerialPort
 	hbtimeout     time.Duration
 	hbtimer       *time.Timer
 	hbthreshold   uint
@@ -65,9 +64,33 @@ type PlayoutServer struct {
 	SwitchUpdates chan SwitchUpdate
 }
 
-func (srv *PlayoutServer) handleControl(data string) {
-	rhdl.Printf("Server(%s): got control message: %q", srv.name, data)
+func (srv *PlayoutServer) handleHeartbeat() {
+	rhdl.Printf("Server(%s): got heartbeat message", srv.name)
+	srv.hbtimer.Reset(srv.hbtimeout)
+	if (srv.hbcnt + 1) < srv.hbthreshold {
+		srv.hbcnt++
+		return
+	}
 
+	old := srv.state.Health
+	srv.state.Health = ServerAlive
+	srv.state.Changed = time.Now()
+	if old != srv.state.Health {
+		srv.StateChanges <- srv.state
+		rhl.Printf("Server(%s): is back from the dead!", srv.name)
+		if srv.state.Channel == "" {
+			srv.device.tx <- "channel ?"
+		}
+	}
+}
+
+func (srv *PlayoutServer) handleMessage(data string) {
+	rhdl.Printf("Server(%s): got message: %q", srv.name, data)
+
+	if data == "hb" {
+		srv.handleHeartbeat()
+		return
+	}
 	if strings.HasPrefix(data, "channel ") {
 		if len(data) <= 8 {
 			rhl.Printf("Server(%s) sent empty channel name", srv.name)
@@ -86,27 +109,7 @@ func (srv *PlayoutServer) handleControl(data string) {
 		// TODO: send command to swichctrl:  &Command{Type: CmdServer, Args: data[9:], Response: nil}
 		return
 	}
-	rhl.Printf("Server(%s): ignoring unknown control message: %q", srv.name, data)
-}
-
-func (srv *PlayoutServer) handleHeartbeat(data string) {
-	rhdl.Printf("Server(%s): got heartbeat message: %q", srv.name, data)
-	srv.hbtimer.Reset(srv.hbtimeout)
-	if (srv.hbcnt + 1) < srv.hbthreshold {
-		srv.hbcnt++
-		return
-	}
-
-	old := srv.state.Health
-	srv.state.Health = ServerAlive
-	srv.state.Changed = time.Now()
-	if old != srv.state.Health {
-		srv.StateChanges <- srv.state
-		rhl.Printf("Server(%s): is back from the dead!", srv.name)
-		if srv.state.Channel == "" {
-			srv.control.tx <- "channel ?"
-		}
-	}
+	rhl.Printf("Server(%s): ignoring unknown message: %q", srv.name, data)
 }
 
 func (srv *PlayoutServer) handleHBTimeout() {
@@ -119,8 +122,7 @@ func (srv *PlayoutServer) handleHBTimeout() {
 
 func (srv *PlayoutServer) Run() {
 	stop := make(chan bool)
-	srv.control.Run(stop)
-	srv.heartbeat.Run(stop)
+	srv.device.Run(stop)
 	srv.hbtimer = time.NewTimer(srv.hbtimeout)
 	srv.hbcnt = 0
 
@@ -129,20 +131,18 @@ func (srv *PlayoutServer) Run() {
 		select {
 		case <-stop:
 			return
-		case data := <-srv.control.rx:
-			srv.handleControl(data)
-		case data := <-srv.heartbeat.rx:
-			srv.handleHeartbeat(data)
+		case data := <-srv.device.rx:
+			srv.handleMessage(data)
 		case <-srv.hbtimer.C:
 			srv.handleHBTimeout()
 		case <-srv.UpdateRequest:
 			if srv.state.Health == ServerDead {
 				srv.StateChanges <- srv.state
 			} else {
-				srv.control.tx <- "channel ?"
+				srv.device.tx <- "channel ?"
 			}
 		case update := <-srv.SwitchUpdates:
-			srv.control.tx <- update.Data
+			srv.device.tx <- update.Data
 		}
 	}
 }
@@ -165,12 +165,8 @@ func ServerInit(name string, conf *Config) (srv *PlayoutServer, err error) {
 	srv.UpdateRequest = make(chan bool, 8)
 	srv.SwitchUpdates = make(chan SwitchUpdate, 32)
 
-	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, "\n"); err != nil {
-		err = fmt.Errorf("Server(%s): error opening heartbeat port: %s", srv.name, err)
+	if srv.device, err = SerialOpen(conf.Servers[name].Device, conf.Servers[name].Baudrate, "\n"); err != nil {
+		err = fmt.Errorf("Server(%s): error opening serial port: %s", srv.name, err)
 		return
 	}
 
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