Context Timeout Example

ctx_timeout.go

package main

import (
	"context"
	"fmt"
	"time"
)

func WorkHardOne(ctx context.Context, name string, res *chan string) {
	for sec := 0; sec < 3; sec++ {
		fmt.Println("[WorkHardOne] Still Doing...", sec+1)
		time.Sleep(time.Second * 1)
	}
	*res <- "/\\ Namaste " + name
}

func main() {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*4)
	defer cancel()
	resChan := make(chan string, 1)
	go WorkHardOne(ctx, "Manju", &resChan)
	select {
	case msg, ok := <-resChan:
		{
			if !ok {
				fmt.Println("[main] Chan closed !")
			} else {
				fmt.Println("[main]  Result from routine:", msg)
			}
		}
	case <-ctx.Done():
		fmt.Println("[main] Err:", ctx.Err())
	}
	fmt.Println("[main] Wish i did not wait for anybody !")
}