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main.go
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main.go
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package main
import (
"flag"
"fmt"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/betom84/kl-logger/api"
"github.com/betom84/kl-logger/klimalogg"
"github.com/betom84/kl-logger/repository"
"github.com/sirupsen/logrus"
_ "net/http/pprof"
)
var (
log *string = flag.String("log", "stdout", "Logfile")
logLevel *string = flag.String("logLevel", "info", "Log level (e.g. error, info, debug, trace)")
usbTrace *bool = flag.Bool("usbTrace", false, "Trace usb control messages")
apiPort *int = flag.Int("apiPort", 8088, "Port to serve http api requests")
)
func init() {
flag.Usage = func() {
fmt.Println("Usage of kl-logger:")
flag.PrintDefaults()
}
flag.Parse()
ll, err := logrus.ParseLevel(*logLevel)
if err != nil {
logrus.WithError(err).Panic()
}
logrus.SetLevel(ll)
if *log != "stdout" {
lf, err := os.OpenFile(*log, os.O_RDWR|os.O_CREATE, 0666)
if err != nil {
logrus.WithError(err).Panic()
}
logrus.SetOutput(lf)
}
logrus.SetFormatter(&logrus.TextFormatter{FullTimestamp: true})
logrus.Infof("log level is set to '%s'", logrus.GetLevel().String())
}
func main() {
err := run()
if err != nil {
logrus.WithError(err).Panic()
}
os.Exit(0)
}
func run() error {
t := klimalogg.NewTransceiver(0x6666, 0x5555)
err := t.Open()
if err != nil {
return err
}
if *usbTrace == true {
trace, err := os.OpenFile(fmt.Sprintf("%s_transceiver.trace", time.Now().Format("20060102_15040507")), os.O_CREATE|os.O_RDWR, 0666)
if err == nil {
t.StartTracing(trace)
defer trace.Close()
}
}
defer func() {
err = t.Close()
if err != nil {
logrus.WithError(err).Error("could not close transceiver")
}
logrus.Debug("usb transceiver disconnected")
}()
logrus.WithFields(logrus.Fields{
"vendorID": fmt.Sprintf("0x%04x", t.VendorID),
"productID": fmt.Sprintf("0x%04x", t.ProductID),
}).Info("usb transceiver connected")
c, err := klimalogg.NewConsole(t)
if err != nil {
return err
}
defer func() {
c.Close()
logrus.Debug("klimalogg console closed")
}()
c.AddListener(repository.Default.Listen())
c.StartCommunication()
if err != nil {
return err
}
logrus.Info("klimalogg console ready")
server := api.NewServer(repository.Default, c.Transceiver())
go func() {
logrus.Infof("start api http server on :%d", *apiPort)
err := http.ListenAndServe(fmt.Sprintf(":%d", *apiPort), server)
if err != nil && err != http.ErrServerClosed {
logrus.WithError(err).Error("error running api http server")
}
}()
waitForSignal()
return nil
}
func waitForSignal() bool {
var sigChan = make(chan os.Signal)
signal.Notify(sigChan, syscall.SIGTERM)
signal.Notify(sigChan, syscall.SIGINT)
logrus.Info("waiting for signal to exit")
sig := <-sigChan
logrus.Infof("exiting due to %+v\n", sig)
return true
}