// eventCallback will process events
func eventCallback(ie events.Event) {
// grab the container from the cache
container := Containers.Container(ie.Reference())
if container != nil {
newState := eventedState(ie.String(), container.CurrentState())
// do we have a state change
if newState != container.CurrentState() {
switch newState {
case StateStopping,
StateRunning,
StateStopped,
StateSuspended:
log.Debugf("Container(%s) state set to %s via event activity",
container.ExecConfig.ID, newState.String())
container.SetState(newState)
if newState == StateStopped {
container.onStop()
}
// container state has changed so we need to update the container attributes
// we'll do this in a go routine to avoid blocking
go func() {
ctx, cancel := context.WithTimeout(context.Background(), propertyCollectorTimeout)
defer cancel()
err := container.Refresh(ctx)
if err != nil {
log.Errorf("Event driven container update failed: %s", err.Error())
}
// regardless of update success failure publish the container event
publishContainerEvent(container.ExecConfig.ID, ie.Created(), ie.String())
}()
case StateRemoved:
log.Debugf("Container(%s) %s via event activity", container.ExecConfig.ID, newState.String())
Containers.Remove(container.ExecConfig.ID)
publishContainerEvent(container.ExecConfig.ID, ie.Created(), ie.String())
}
}
}
return
}
