task runner2

main.go

package main

import (
	"github.com/gin-gonic/gin"
	"log"
	"time"
)

func main() {
	g := gin.Default()
	g.Handle("GET", "/task", handler)

	if err := g.Run(":8080"); err != nil {
		log.Fatal(err)
	}
}

func handler(ctx *gin.Context) {
	q := struct {
		Duration time.Duration `form:"duration"`
		Delay    time.Duration `form:"delay"`
		Message  string        `form:"message"`
	}{}
	if err := ctx.BindQuery(&q); err != nil {
		ctx.String(500, err.Error())
		return
	}

	time.AfterFunc(q.Delay, func() {
		log.Printf("task %v started", q.Message)
		time.Sleep(q.Duration)
		log.Printf("task %v finished", q.Message)
	})
}