context sigint

contextsigint.go

package main

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

func doSomethingAwesome(ctx context.Context, msg string) {
	for {
		select {
		case <-ctx.Done():
			// run cleanup logic here
			log.Println(ctx.Err())
			fmt.Println("shutting down gracefully - running cleanup")
			return
		default:
			time.Sleep(200 * time.Millisecond)
			fmt.Print(".")
		}
	}

}

func main() {
	// create context that listens for SIGINT from OS
	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
	defer cancel()

	doSomethingAwesome(ctx, "ello")
}