| 1 | package calendar |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "time" |
| 7 | |
| 8 | "amadan.net/rastrillo/rastrillo/carlos" |
| 9 | ) |
| 10 | |
| 11 | func (s *scheduledWork) matches(remote remoteSchedule) bool { |
| 12 | if remote.NextAt <= 0 || remote.Kind != "once" || remote.Path != "/jobs/reminders" { |
| 13 | return false |
| 14 | } |
| 15 | occurrence := remote.DueAt |
| 16 | if occurrence == 0 { |
| 17 | occurrence = remote.NextAt |
| 18 | } |
| 19 | if occurrence != s.registeredAt.Unix() { |
| 20 | return false |
| 21 | } |
| 22 | return remote.NextAt == occurrence || (remote.Attempts > 0 && remote.NextAt <= s.now().Add(15*time.Minute).Unix()) |
| 23 | } |
| 24 | |
| 25 | func (s *scheduledWork) restore(parent context.Context, due time.Time) (bool, error) { |
| 26 | ctx, cancel := context.WithTimeout(parent, 2*time.Second) |
| 27 | err := s.capability(ctx) |
| 28 | cancel() |
| 29 | if errors.Is(err, carlos.ErrNotOnCarlos) && s.development { |
| 30 | return false, nil |
| 31 | } |
| 32 | if err != nil { |
| 33 | return false, err |
| 34 | } |
| 35 | ctx, cancel = context.WithTimeout(parent, 2*time.Second) |
| 36 | remote, err := s.armed(ctx) |
| 37 | cancel() |
| 38 | if err != nil { |
| 39 | return false, err |
| 40 | } |
| 41 | if due.IsZero() || remote.NextAt <= 0 || remote.Kind != "once" || remote.Path != "/jobs/reminders" { |
| 42 | return false, nil |
| 43 | } |
| 44 | occurrence := remote.DueAt |
| 45 | if occurrence == 0 { |
| 46 | occurrence = remote.NextAt |
| 47 | } |
| 48 | now := s.now() |
| 49 | if remote.NextAt != occurrence && (remote.Attempts <= 0 || remote.NextAt > now.Add(15*time.Minute).Unix()) { |
| 50 | return false, nil |
| 51 | } |
| 52 | if due.After(now) { |
| 53 | at := due |
| 54 | if latest := now.Add(carlos.MaxAhead - time.Minute); at.After(latest) { |
| 55 | at = latest |
| 56 | } |
| 57 | if occurrence != at.Unix() { |
| 58 | return false, nil |
| 59 | } |
| 60 | } else { |
| 61 | if occurrence < due.Unix() || remote.NextAt > now.Add(15*time.Minute).Unix() { |
| 62 | return false, nil |
| 63 | } |
| 64 | if remote.NextAt > now.Unix() { |
| 65 | s.notBefore = time.Unix(remote.NextAt, 0) |
| 66 | due = s.notBefore |
| 67 | } |
| 68 | } |
| 69 | s.known, s.force = true, false |
| 70 | s.registered, s.observed = due, due |
| 71 | s.registeredAt = time.Unix(occurrence, 0) |
| 72 | s.checked = now |
| 73 | return true, nil |
| 74 | } |
| 75 | |
| 76 | func (s *scheduledWork) probe() time.Time { |
| 77 | if !s.mu.TryLock() { |
| 78 | return time.Now() |
| 79 | } |
| 80 | defer s.mu.Unlock() |
| 81 | ctx, cancel := context.WithTimeout(s.ctx, 4*time.Second) |
| 82 | defer cancel() |
| 83 | due, err := s.synchronizeLocked(ctx, false, true) |
| 84 | if err != nil { |
| 85 | s.request() |
| 86 | return s.now() |
| 87 | } |
| 88 | return due |
| 89 | } |
| 90 | |
amadan