// Delete stopped containers
//
// We do this because Docker Swarm will account for stopped containers
// when using its affinity filter, where our semantics don't consider
// stopped containers in its scheduling decisions.
func delStopped(dk docker.Client) error {
containers, err := dk.List(map[string][]string{"status": {"exited"}})
if err != nil {
return fmt.Errorf("error listing stopped containers: %s", err)
}
for _, dkc := range containers {
// Stopped containers show up with a "/" in front of the name
name := dkc.Name[1:]
if err := dk.Remove(name); err != nil {
log.WithFields(log.Fields{
"name": name,
"err": err,
}).Error("error removing container")
continue
}
}
return nil
}
func runWorker(conn db.Conn, dk docker.Client, myIP string, subnet net.IPNet) {
if myIP == "" {
return
}
filter := map[string][]string{"label": {labelPair}}
var toBoot, toKill []interface{}
for i := 0; i < 2; i++ {
dkcs, err := dk.List(filter)
if err != nil {
log.WithError(err).Warning("Failed to list docker containers.")
return
}
conn.Transact(func(view db.Database) error {
_, err := view.MinionSelf()
if err != nil {
return nil
}
dbcs := view.SelectFromContainer(func(dbc db.Container) bool {
return dbc.Minion == myIP
})
dkcs, badDcks := filterOnSubnet(subnet, dkcs)
var changed []db.Container
changed, toBoot, toKill = syncWorker(dbcs, dkcs, subnet)
for _, dbc := range changed {
view.Commit(dbc)
}
toKill = append(toKill, badDcks...)
return nil
})
doContainers(dk, toBoot, dockerRun)
doContainers(dk, toKill, dockerKill)
}
}
