package main

import (
	"context"
	"flag"
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"

	"git.loafle.net/commons/logging-go"
	ocpcc "git.loafle.net/overflow/commons-go/probe/constants"
	"git.loafle.net/overflow/container_discovery/server"
)

var (
	pidFilePath *string
)

func init() {
	pidFilePath = flag.String(ocpcc.FlagPidFilePathName, "./dist/discovery.pid", "PID file path")
	loggingConfigFilePath := flag.String(ocpcc.FlagLoggingConfigFilePathName, "", "logging config path")
	flag.Parse()

	logging.InitializeLogger(*loggingConfigFilePath)
}

func main() {
	defer logging.Logger().Sync()

	s := server.New(*pidFilePath)

	go func() {
		err := s.ListenAndServe()
		if nil != err {
			log.Printf("err: %v", err)
		}
		os.Exit(1)
	}()

	interrupt := make(chan os.Signal, 1)
	signal.Notify(interrupt,
		syscall.SIGKILL,
		syscall.SIGSTOP,
		syscall.SIGHUP,
		syscall.SIGINT,
		syscall.SIGTERM,
		syscall.SIGQUIT)

	<-interrupt
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	if err := s.Shutdown(ctx); err != nil {
		logging.Logger().Errorf("error: %v", err)
	}
}