我想创建一个调度程序，以便它每秒执行一个任务，但也希望有一个和http接口来停止/启动调度程序并获得更多的统计信息/信息，在阅读更多关于计时器和代码 ， 通道和gorutines我出来了： 
 
 https://gist.github.com/nbari/483c5b382c795bf290b5 
 
package main

import (
    "fmt"
    "log"
    "net/http"
    "time"
)

var timer *time.Ticker

func scheduler(seconds time.Duration) *time.Ticker {
    ticker := time.NewTicker(seconds * time.Second)
    go func() {
        for t := range ticker.C {
            // do stuff
            fmt.Println(t)
        }
    }()
    return ticker
}

func Start(timer *time.Ticker) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        timer = scheduler(1)
        w.Write([]byte("Starting scheduler"))
    })
}

func Stop(timer *time.Ticker) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        timer.Stop()
        w.Write([]byte("Stoping scheduler"))
    })
}

func main() {
    timer = scheduler(1)
    http.Handle("/start", Start(timer))
    http.Handle("/stop", Stop(timer))
    log.Fatal(http.ListenAndServe(":8080", nil))
}
 
 上面的代码工作，但我有一个全局“计时器”变量，我想知道是否有更好的方法来实现这个，也是一种方法来处理超过1个调度程序，目前正在考虑可能实现一个容器的类型所有的调度程序，但希望有一些反馈，可以帮助我找到聪明的解决方案。 

I want to create a scheduler so that it executes a task every second for example, but also would like to have and http interface to stop/start the scheduler and get more stats/info, after reading more about timers & tickers, channels and gorutines I came out with this: 
 
https://gist.github.com/nbari/483c5b382c795bf290b5 
 
package main

import (
    "fmt"
    "log"
    "net/http"
    "time"
)

var timer *time.Ticker

func scheduler(seconds time.Duration) *time.Ticker {
    ticker := time.NewTicker(seconds * time.Second)
    go func() {
        for t := range ticker.C {
            // do stuff
            fmt.Println(t)
        }
    }()
    return ticker
}

func Start(timer *time.Ticker) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        timer = scheduler(1)
        w.Write([]byte("Starting scheduler"))
    })
}

func Stop(timer *time.Ticker) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        timer.Stop()
        w.Write([]byte("Stoping scheduler"))
    })
}

func main() {
    timer = scheduler(1)
    http.Handle("/start", Start(timer))
    http.Handle("/stop", Stop(timer))
    log.Fatal(http.ListenAndServe(":8080", nil))
}
 
The above code is working but I have a global "timer" variable, I would like to know if there is a better way to implement this and also a way for handle more than 1 scheduler, currently thinking on probably implementing kind of a container for all the scheduler but would like to have some feedbacks that could help me find clever solutions.

原文：https://stackoverflow.com/questions/33413105