forked from vmware-archive/atc
/
tracker_runner.go
60 lines (47 loc) · 1.01 KB
/
tracker_runner.go
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package builds
import (
"os"
"time"
"code.cloudfoundry.org/clock"
"code.cloudfoundry.org/lager"
)
//go:generate counterfeiter . BuildTracker
type BuildTracker interface {
Track()
Release()
}
//go:generate counterfeiter . ATCListener
type ATCListener interface {
Listen(channel string) (chan bool, error)
}
type TrackerRunner struct {
Tracker BuildTracker
ListenBus ATCListener
Interval time.Duration
Clock clock.Clock
DrainCh <-chan struct{}
Logger lager.Logger
}
func (runner TrackerRunner) Run(signals <-chan os.Signal, ready chan<- struct{}) error {
ticker := runner.Clock.NewTicker(runner.Interval)
notify, err := runner.ListenBus.Listen("atc_shutdown")
if err != nil {
return err
}
close(ready)
runner.Tracker.Track()
for {
select {
case <-runner.DrainCh:
return nil
case <-notify:
runner.Logger.Info("received-atc-shutdown-message")
runner.Tracker.Track()
case <-ticker.C():
runner.Tracker.Track()
case <-signals:
return nil
}
}
panic("unreachable")
}