From 59f010d9d418992e30fc9c798019a76b9d3df07b Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Tue, 29 Mar 2016 22:25:48 +0200
Subject: added telnet control interface


diff --git a/Makefile b/Makefile
index 0ac1f91..34a8e2e 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,8 @@ GOCMD := GOPATH=$(curdir) go
 EXECUTEABLE := rhctl
 
 LIBS := "github.com/schleibinger/sio" \
-        "github.com/naoina/toml"
+        "github.com/naoina/toml" \
+        "github.com/spreadspace/telgo"
 
 .PHONY: getlibs updatelibs vet format build clean distclean
 all: build
diff --git a/sample-config.toml b/sample-config.toml
index 800f764..af68f76 100644
--- a/sample-config.toml
+++ b/sample-config.toml
@@ -1,6 +1,6 @@
 [audioswitch]
 dev = "/dev/ttyUSB0"
-baud = 9600
+baud = 19200
 timeout = "500ms"
 ports = [ { name = "master_main", number = 1 },
           { name = "master_music", number = 2 },
@@ -9,11 +9,11 @@ ports = [ { name = "master_main", number = 1 },
 
 [servers]
 
-  [servers.master]
-  ctrl_dev = "/dev/ttyUSB1"
-  ctrl_baud = 38400
-  heartbeat_dev = "/dev/ttyUSB2"
-  heartbeat_baud = 19200
+  #[servers.master]
+  #ctrl_dev = "/dev/ttyUSB1"
+  #ctrl_baud = 38400
+  #heartbeat_dev = "/dev/ttyUSB2"
+  #heartbeat_baud = 19200
 
   # [servers.standby]
   # ctrl_dev = "/dev/ttyUSB3"
@@ -25,3 +25,6 @@ ports = [ { name = "master_main", number = 1 },
 
   [clients.web]
   addr = ":4080"
+
+  [clients.telnet]
+  addr = "localhost:4023"
diff --git a/src/rhctl/conf.go b/src/rhctl/conf.go
index 47a51b8..e740bde 100644
--- a/src/rhctl/conf.go
+++ b/src/rhctl/conf.go
@@ -53,6 +53,9 @@ type Config struct {
 		Web struct {
 			Address string `toml:"addr"`
 		}
+		Telnet struct {
+			Address string `toml:"addr"`
+		}
 	}
 }
 
diff --git a/src/rhctl/main.go b/src/rhctl/main.go
index 2aaf7aa..923a287 100644
--- a/src/rhctl/main.go
+++ b/src/rhctl/main.go
@@ -78,6 +78,8 @@ func main() {
 	rhl.Printf("just started...")
 	rhdl.Printf("configuration: %+v", conf)
 
+	//**************************************************
+	// initializing essential parts
 	sw, err := SwitchInit(conf)
 	if err != nil {
 		rhl.Println("error initializing audio switch: ", err)
@@ -93,13 +95,17 @@ func main() {
 		}
 		servers = append(servers, server)
 	}
-	if len(servers) <= 0 {
-		rhl.Printf("Error: there is no playout server configured...")
-		return
-	}
+	// if len(servers) <= 0 {
+	// 	rhl.Printf("Error: there is no playout server configured...")
+	// 	return
+	// }
 
 	ctrl := SwitchControlInit(conf, sw, servers)
 
+	// running non-essential parts aka clients
+	telnet := TelnetInit(conf, ctrl)
+
+	//**************************************************
 	// running essential parts
 	stop := make(chan bool)
 
@@ -126,6 +132,14 @@ func main() {
 		stop <- true
 	}()
 
+	// running non-essential parts aka clients
+	if conf.Clients.Telnet.Address != "" {
+		rhl.Printf("starting telnet interface")
+		telnet.Run()
+		rhl.Printf("telnet interface just stopped")
+	}
+
+	//**************************************************
 	<-stop
 	rhl.Printf("at least one essential part has stopped - bringing down the whole process")
 }
diff --git a/src/rhctl/telnet.go b/src/rhctl/telnet.go
new file mode 100644
index 0000000..3cc2b44
--- /dev/null
+++ b/src/rhctl/telnet.go
@@ -0,0 +1,59 @@
+//
+//  rhctl
+//
+//  Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of rhctl.
+//
+//  rhctl is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  any later version.
+//
+//  rhctl is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package main
+
+import (
+	"github.com/spreadspace/telgo"
+)
+
+type TelnetInterface struct {
+	server *telgo.Server
+}
+
+func status(c *telgo.Client, args []string, ctrl *SwitchControl) bool {
+	// TODO: get status from ctrl
+	c.Sayln("not yet implemented!")
+	return false
+}
+
+func quit(c *telgo.Client, args []string) bool {
+	return true
+}
+
+func (telnet *TelnetInterface) Run() {
+	rhdl.Printf("Telnet: handler running...")
+	if err := telnet.server.Run(); err != nil {
+		rhl.Printf("Telnet: server returned: %s", err)
+	}
+}
+
+func TelnetInit(conf *Config, ctrl *SwitchControl) (telnet *TelnetInterface) {
+	telnet = &TelnetInterface{}
+
+	cmdlist := make(telgo.CmdList)
+	cmdlist["status"] = func(c *telgo.Client, args []string) bool { return status(c, args, ctrl) }
+	cmdlist["quit"] = quit
+
+	telnet.server = telgo.NewServer(conf.Clients.Telnet.Address, "rhctl> ", cmdlist, ctrl)
+
+	return
+}
-- 
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