| 1 | package session |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "fmt" |
| 7 | "sort" |
| 8 | |
| 9 | "reasonix/internal/event" |
| 10 | "reasonix/internal/provider" |
| 11 | ) |
| 12 | |
| 13 | // RecoverInterrupted closes persisted runtime authority that cannot survive a |
| 14 | // process restart. It never reruns a tool or restores an approval. Callers must |
| 15 | // hold the exclusive write handle returned by Open. |
| 16 | // |
| 17 | // This is a Session operation because it derives a closure batch from the |
| 18 | // projection; the physical handle only writes the resulting commit. |
| 19 | func (s *Session) RecoverInterrupted(ctx context.Context) (Commit, bool, error) { |
| 20 | if s == nil { |
| 21 | return Commit{}, false, fmt.Errorf("session: nil session") |
| 22 | } |
| 23 | if s.readOnly { |
| 24 | return Commit{}, false, ErrReadOnly |
| 25 | } |
| 26 | // Restart recovery needs only live authority, never historical message |
| 27 | // bodies or the provider workset. Using the full compatibility Snapshot here |
| 28 | // would replay the entire durable transcript on every cold open. |
| 29 | snapshot := s.StateSnapshot() |
| 30 | turnID := snapshot.Projection.TurnID |
| 31 | if turnID == "" { |
| 32 | return Commit{}, false, nil |
| 33 | } |
| 34 | events := streamCheckpointRecoveryEvents(snapshot.Projection) |
| 35 | events = append(events, ClosureEvents(snapshot.Projection, "unavailable", "previous runtime exited before recording a result")...) |
| 36 | terminal, _ := json.Marshal(map[string]any{"status": event.TurnInterrupted}) |
| 37 | events = append(events, Event{Kind: "turn/end", Payload: terminal}) |
| 38 | commit, err := s.Append(ctx, Batch{OperationID: "turn-finalize:" + turnID, TurnID: turnID, Events: events}) |
| 39 | if err != nil { |
| 40 | return Commit{}, false, err |
| 41 | } |
| 42 | if _, err := s.Flush(ctx); err != nil { |
| 43 | return Commit{}, false, err |
| 44 | } |
| 45 | return commit, true, nil |
| 46 | } |
| 47 | |
| 48 | // ClosureEvents derives deterministic terminal facts without executing tools |
| 49 | // or changing the provider workset. Live termination and restart share it. |
| 50 | func ClosureEvents(projection Projection, interactionState, detail string) []Event { |
| 51 | events := make([]Event, 0, len(projection.ActiveTools)+len(projection.Interactions)+len(projection.ActiveSteps)) |
| 52 | toolIDs := make([]string, 0, len(projection.ActiveTools)) |
| 53 | for id := range projection.ActiveTools { |
| 54 | toolIDs = append(toolIDs, id) |
| 55 | } |
| 56 | sort.Strings(toolIDs) |
| 57 | for _, id := range toolIDs { |
| 58 | state := provider.ToolRunNotStarted |
| 59 | legacyState := "not_started" |
| 60 | if projection.StartedTools[id] { |
| 61 | state = provider.ToolRunUnknown |
| 62 | legacyState = "result_unknown" |
| 63 | } |
| 64 | payload, _ := json.Marshal(map[string]any{"id": id, "name": projection.ActiveTools[id], "state": legacyState, "runState": state, "error": detail}) |
| 65 | events = append(events, Event{Kind: "tool/result", Payload: payload}) |
| 66 | } |
| 67 | requestIDs := make([]string, 0, len(projection.Interactions)) |
| 68 | for id := range projection.Interactions { |
| 69 | requestIDs = append(requestIDs, id) |
| 70 | } |
| 71 | sort.Strings(requestIDs) |
| 72 | for _, id := range requestIDs { |
| 73 | payload, _ := json.Marshal(map[string]any{"id": id, "state": interactionState}) |
| 74 | events = append(events, Event{Kind: "interaction/resolved", Payload: payload}) |
| 75 | } |
| 76 | stepIDs := make([]string, 0, len(projection.ActiveSteps)) |
| 77 | for id := range projection.ActiveSteps { |
| 78 | stepIDs = append(stepIDs, id) |
| 79 | } |
| 80 | sort.Strings(stepIDs) |
| 81 | for _, id := range stepIDs { |
| 82 | payload, _ := json.Marshal(map[string]any{"id": id}) |
| 83 | events = append(events, Event{Kind: "step/end", Payload: payload}) |
| 84 | } |
| 85 | return events |
| 86 | } |
| 87 |