container_discovery/main.go

package main

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

	"git.loafle.net/commons/logging-go"
	occp "git.loafle.net/overflow/commons-go/config/probe"
	"git.loafle.net/overflow/container_discovery/client"
)

var (
	portNumber *int
)

func init() {
	portNumber = flag.Int(occp.FlagProbePortName, 60000, "Port number of Probe")
	loggingConfigFilePath := flag.String(occp.FlagLoggingConfigFilePathName, "", "logging config path")
	flag.Parse()

	logging.InitializeLogger(*loggingConfigFilePath)
}

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

	c := client.New(*portNumber)

	err := c.Start()
	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 := c.Stop(ctx); err != nil {
		logging.Logger().Errorf("error: %v", err)
	}
}