package main import "time" // https://bbengfort.github.io/snippets/2016/06/26/background-work-goroutines-timer.html THANKS type Repeater struct { Stopped bool ShutdownChannel chan string Interval time.Duration period time.Duration app *appContext } func NewRepeater(interval time.Duration, app *appContext) *Repeater { return &Repeater{ Stopped: false, ShutdownChannel: make(chan string), Interval: interval, period: interval, app: app, } } func (rt *Repeater) Run() { rt.app.info.Println("Invite daemon started") for { select { case <-rt.ShutdownChannel: rt.ShutdownChannel <- "Down" return case <-time.After(rt.period): break } started := time.Now() rt.app.storage.loadInvites() rt.app.debug.Println("Daemon: Checking invites") rt.app.checkInvites() finished := time.Now() duration := finished.Sub(started) rt.period = rt.Interval - duration } } func (rt *Repeater) Shutdown() { rt.Stopped = true rt.ShutdownChannel <- "Down" <-rt.ShutdownChannel close(rt.ShutdownChannel) }