信号监听

使用OS包监听系统信号

package main

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

func main() {

	ctx, cancel := context.WithCancel(context.Background())

	ch := make(chan os.Signal, 1)
	signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
	go func() {
		<-ch
		log.Println("Received termination, signaling shutdown")
		cancel()
	}()

	go func(ctx context.Context) {
		<-ctx.Done()
		log.Println("context done")
		os.Exit(0)
	}(ctx)

	time.Sleep(time.Minute)
}