func (m *MemEngine) LatestCTime(u gregor.UID, d gregor.DeviceID) *time.Time {
m.Lock()
defer m.Unlock()
log := m.getUser(u).log
for i := len(log) - 1; i >= 0; i-- {
if log[i].i != nil && log[i].i.item != nil &&
(d == nil || log[i].i.item.Metadata() != nil &&
(log[i].i.item.Metadata().DeviceID() == nil ||
bytes.Equal(d.Bytes(),
log[i].i.item.Metadata().DeviceID().Bytes()))) {
return &log[i].ctime
}
}
return nil
}
func isMessageForDevice(m gregor.InBandMessage, d gregor.DeviceID) bool {
sum := m.ToStateUpdateMessage()
if sum == nil {
return true
}
if d == nil {
return true
}
did := sum.Metadata().DeviceID()
if did == nil {
return true
}
if bytes.Equal(did.Bytes(), d.Bytes()) {
return true
}
return false
}
func (u *user) state(now time.Time, f gregor.ObjFactory, d gregor.DeviceID, t gregor.TimeOrOffset) (gregor.State, error) {
var items []gregor.Item
table := make(map[string]gregor.Item)
for _, i := range u.items {
md := i.item.Metadata()
did := md.DeviceID()
if d != nil && did != nil && !bytes.Equal(did.Bytes(), d.Bytes()) {
continue
}
if t != nil && toTime(now, t).Before(i.ctime) {
continue
}
if i.isDismissedAt(toTime(now, t)) {
continue
}
exported, err := i.export(f)
if err != nil {
return nil, err
}
items = append(items, exported)
table[exported.Metadata().MsgID().String()] = exported
}
return f.MakeStateWithLookupTable(items, table)
}