Golang Context

package main

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

func main() {
    ctx, cancel := context.WithCancel(context.Background())

    go worker(ctx, "node01")
    go worker(ctx, "node02")
    go worker(ctx, "node03")

    time.Sleep(5 * time.Second)
    fmt.Println("stop the gorutine")
    cancel()
    time.Sleep(5 * time.Second)
}

func worker(ctx context.Context, name string) {
    for {
        select {
        case <-ctx.Done():
            fmt.Println(name, "got the stop channel")
            return
        default:
            fmt.Println(name, "still working")
            time.Sleep(1 * time.Second)
        }
    }
}

Source: blog.wu-boy.com

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