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event.go
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/
event.go
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package systemd
import (
log "github.com/coreos/fleet/third_party/github.com/golang/glog"
"github.com/coreos/fleet/third_party/github.com/coreos/go-systemd/dbus"
"github.com/coreos/fleet/event"
"github.com/coreos/fleet/job"
)
type EventStream struct {
close chan bool
}
func NewEventStream() *EventStream {
return &EventStream{make(chan bool)}
}
func (self *EventStream) Stream(unitchan <-chan map[string]*dbus.UnitStatus, eventchan chan *event.Event) {
for true {
select {
case <-self.close:
return
case units := <-unitchan:
log.V(2).Infof("Received event from dbus")
events := translateUnitStatusEvents(units)
for i, _ := range events {
ev := events[i]
log.V(2).Infof("Translated dbus event to event(Type=%s)", ev.Type)
eventchan <- &ev
}
}
}
}
func (self *EventStream) Close() {
log.V(1).Info("Closing EventStream")
close(self.close)
}
func translateUnitStatusEvents(changes map[string]*dbus.UnitStatus) []event.Event {
events := make([]event.Event, 0)
for key, status := range changes {
jobName := key
var state *job.JobState
if status != nil {
state = job.NewJobState(status.LoadState, status.ActiveState, status.SubState, nil, nil)
}
ev := event.Event{"EventJobStateUpdated", state, jobName}
events = append(events, ev)
}
return events
}