"fmt"
"os"
"flag"
+ "time"
+ "log/syslog"
"log"
)
// ---------- Main Code -------------
-func usage() {
- fmt.Fprintf(os.Stderr, "Usage: door_daemon_0mq <door tty device>\n")
- flag.PrintDefaults()
+var (
+ cmd_port_ string
+ pub_port_ string
+ door_tty_path_ string
+ use_syslog_ bool
+ Syslog_ *log.Logger
+)
+
+func init() {
+ flag.StringVar(&cmd_port_, "cmdport", "ipc:///run/tuer/door_cmd.ipc", "zmq command socket path")
+ flag.StringVar(&pub_port_, "pubport", "tcp://*:4242", "zmq public/listen socket path")
+ flag.StringVar(&door_tty_path_, "device", "/dev/door", "door tty device path")
+ flag.BoolVar(&use_syslog_, "syslog", false, "log to syslog local1 facility")
+ flag.Parse()
}
func main() {
- flag.Usage = usage
- flag.Parse()
+ zmqctx, cmd_chans, pub_chans := ZmqsInit(cmd_port_, pub_port_)
+ defer cmd_chans.Close()
+ defer pub_chans.Close()
+ defer zmqctx.Close()
- args := flag.Args()
- if len(args) < 1 {
- fmt.Fprintf(os.Stderr, "Input file is missing!\n");
- usage()
- os.Exit(1);
- }
-
- cmd_chans, pub_chans := ZmqsInit("tcp://localhost:5555", "gmp://*:6666")
-
- serial_wr, serial_rd, err := OpenAndHandleSerial(args[0], pub_chans.Out())
+ serial_wr, serial_rd, err := OpenAndHandleSerial(door_tty_path_)
+ defer close(serial_wr)
if err != nil {
- close(serial_wr)
panic(err)
}
-
- serial_wr <- "f"
- firmware_version := <- serial_rd
- log.Print("Firmware version:", firmware_version)
-
- for incoming_request := range cmd_chans.In() {
- reply, err := HandleCommand(incoming_request, pub_chans.Out(), serial_wr, serial_rd)
- if err != nil {
- cmd_chans.Out() <- [][]byte{[]byte("ERROR"), []byte(err.Error())}
- log.Print(err)
- } else {
- cmd_chans.Out() <- reply
- }
+
+ if use_syslog_ {
+ var logerr error
+ Syslog_, logerr = syslog.NewLogger(syslog.LOG_INFO | syslog.LOG_LOCAL1, 0)
+ if logerr != nil { panic(logerr) }
+ Syslog_.Print("started")
+ defer Syslog_.Print("exiting")
+ }
+
+ //~ serial_wr <- "f"
+ //~ firmware_version := <- serial_rd
+ //~ log.Print("Firmware version:", firmware_version)
+ var next_incoming_serial_is_client_reply bool
+ timeout_chan := make(chan bool)
+ defer close(timeout_chan)
+ for {
+ select {
+ case incoming_ser_line, is_notclosed := <- serial_rd:
+ if is_notclosed {
+ //~ if Syslog_ != nil { Syslog_.Print(ByteArrayToString(incoming_ser_line)) }
+ if Syslog_ != nil { Syslog_.Printf("%s",incoming_ser_line) }
+ if next_incoming_serial_is_client_reply {
+ next_incoming_serial_is_client_reply = false
+ cmd_chans.Out() <- incoming_ser_line
+ }
+ pub_chans.Out() <- incoming_ser_line
+ } else {
+ Syslog_.Print("serial device disappeared, exiting")
+ os.Exit(1)
+ }
+ case tv, timeout_notclosed := <- timeout_chan:
+ if timeout_notclosed && tv && next_incoming_serial_is_client_reply {
+ next_incoming_serial_is_client_reply = false
+ cmd_chans.Out() <- [][]byte{[]byte("ERROR"), []byte("No reply from firmware")}
+ }
+ case incoming_request, ic_notclosed := <- cmd_chans.In():
+ if ! ic_notclosed {
+ Syslog_.Print("zmq socket died, exiting")
+ os.Exit(2)
+ }
+ if string(incoming_request[0]) == "log" {
+ if len(incoming_request) < 2 {
+ cmd_chans.Out() <- [][]byte{[]byte("ERROR"), []byte("argument missing")}
+ continue
+ }
+ if Syslog_ == nil {
+ cmd_chans.Out() <- [][]byte{[]byte("ERROR"), []byte("syslog logging not enabled")}
+ continue
+ }
+ Syslog_.Printf("Log: %s",incoming_request[1:])
+ cmd_chans.Out() <- [][]byte{[]byte("Ok")}
+ continue
+ }
+ if Syslog_ != nil { Syslog_.Printf("%s",incoming_request) }
+ if err := HandleCommand(incoming_request, serial_wr, serial_rd); err != nil {
+ out_msg := [][]byte{[]byte("ERROR"), []byte(err.Error())}
+ cmd_chans.Out() <- out_msg
+ } else {
+ pub_chans.Out() <- incoming_request
+ next_incoming_serial_is_client_reply = true
+ go func(){time.Sleep(3*time.Second); timeout_chan <- true;}()
+ }
+ }
}
}