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jfa-go/daemon.go
Harvey Tindall fd766e7b1a
use app identifier instead of ctx
changing this because ctx is commonly used with the context package.
2020-08-16 13:36:54 +01:00

51 lines
1.1 KiB
Go

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)
}