| 1 | package workspacestate |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "crypto/sha256" |
| 6 | "encoding/hex" |
| 7 | "encoding/json" |
| 8 | "errors" |
| 9 | "fmt" |
| 10 | "os" |
| 11 | "path/filepath" |
| 12 | "reflect" |
| 13 | "slices" |
| 14 | "strings" |
| 15 | "time" |
| 16 | |
| 17 | "reasonix/internal/fileutil" |
| 18 | ) |
| 19 | |
| 20 | const ( |
| 21 | Active = "active" |
| 22 | Archived = "archived" |
| 23 | Deleted = "deleted" |
| 24 | ) |
| 25 | |
| 26 | type SessionState struct { |
| 27 | Lifecycle string `json:"lifecycle"` |
| 28 | Generation uint64 `json:"generation"` |
| 29 | ArchivedAt int64 `json:"archivedAt,omitempty"` |
| 30 | extra map[string]json.RawMessage |
| 31 | } |
| 32 | type SourceMapping struct { |
| 33 | RetainedArtifacts []string `json:"retainedArtifacts,omitempty"` |
| 34 | SourceKey string `json:"sourceKey"` |
| 35 | Path string `json:"path"` |
| 36 | HeadID string `json:"headId,omitempty"` |
| 37 | Format string `json:"format"` |
| 38 | Fingerprint string `json:"fingerprint"` |
| 39 | SessionID string `json:"sessionId"` |
| 40 | WorkspaceID string `json:"workspaceId"` |
| 41 | extra map[string]json.RawMessage |
| 42 | } |
| 43 | type Presentation struct { |
| 44 | TopicID string `json:"topicId,omitempty"` |
| 45 | Title string `json:"title,omitempty"` |
| 46 | Pinned bool `json:"pinned,omitempty"` |
| 47 | SortOrder int `json:"sortOrder"` |
| 48 | extra map[string]json.RawMessage |
| 49 | } |
| 50 | type RecoveryEntry struct { |
| 51 | ID string `json:"id"` |
| 52 | SourceKey string `json:"sourceKey"` |
| 53 | Path string `json:"path,omitempty"` |
| 54 | HeadID string `json:"headId,omitempty"` |
| 55 | SessionID string `json:"sessionId,omitempty"` |
| 56 | WorkspaceID string `json:"workspaceId,omitempty"` |
| 57 | Scope string `json:"scope,omitempty"` |
| 58 | WorkspaceRoot string `json:"workspaceRoot,omitempty"` |
| 59 | Format string `json:"format"` |
| 60 | Reason string `json:"reason"` |
| 61 | Status string `json:"status"` |
| 62 | Fingerprint string `json:"fingerprint,omitempty"` |
| 63 | extra map[string]json.RawMessage |
| 64 | } |
| 65 | type Operation struct { |
| 66 | RequestFingerprint string `json:"requestFingerprint,omitempty"` |
| 67 | Request json.RawMessage `json:"request,omitempty"` |
| 68 | Result json.RawMessage `json:"result,omitempty"` |
| 69 | ID string `json:"id"` |
| 70 | Kind string `json:"kind"` |
| 71 | Phase string `json:"phase"` |
| 72 | SessionIDs []string `json:"sessionIds"` |
| 73 | WorkspaceID string `json:"workspaceId,omitempty"` |
| 74 | Lifecycle string `json:"lifecycle"` |
| 75 | ExpectedGeneration uint64 `json:"expectedGeneration"` |
| 76 | ResultGeneration uint64 `json:"resultGeneration,omitempty"` |
| 77 | RecoveryEntryID string `json:"recoveryEntryId,omitempty"` |
| 78 | Mapping *SourceMapping `json:"mapping,omitempty"` |
| 79 | Presentation *Presentation `json:"presentation,omitempty"` |
| 80 | Dependencies []string `json:"dependencies,omitempty"` |
| 81 | extra map[string]json.RawMessage |
| 82 | } |
| 83 | |
| 84 | func validLifecycle(value string) bool { |
| 85 | return value == Active || value == Archived || value == Deleted |
| 86 | } |
| 87 | func setLifecycle(state *State, id, lifecycle string) { |
| 88 | current := state.SessionStates[id] |
| 89 | if lifecycle == Archived && current.Lifecycle != Archived { |
| 90 | current.ArchivedAt = time.Now().UnixMilli() |
| 91 | } |
| 92 | current.Lifecycle, current.Generation = lifecycle, state.Generation+1 |
| 93 | state.SessionStates[id] = current |
| 94 | } |
| 95 | func validateLifecycleState(state State) error { |
| 96 | for id, item := range state.SessionStates { |
| 97 | if strings.TrimSpace(id) == "" || !validLifecycle(item.Lifecycle) { |
| 98 | return fmt.Errorf("%w: session lifecycle", ErrUnsupportedVersion) |
| 99 | } |
| 100 | } |
| 101 | for key, item := range state.SourceMappings { |
| 102 | if key == "" || item.SourceKey != key || item.SessionID == "" || item.Fingerprint == "" { |
| 103 | return errors.New("invalid source mapping") |
| 104 | } |
| 105 | } |
| 106 | for key, item := range state.PendingOperations { |
| 107 | if key == "" || item.ID != key || !validLifecycle(item.Lifecycle) { |
| 108 | return errors.New("invalid session operation") |
| 109 | } |
| 110 | switch item.Kind { |
| 111 | case "import", "archive-import", "archive", "purge", "restore", "command": |
| 112 | default: |
| 113 | return fmt.Errorf("%w: operation kind", ErrUnsupportedVersion) |
| 114 | } |
| 115 | switch item.Phase { |
| 116 | case "prepared", "content_ready", "committed": |
| 117 | case "tombstoned", "content_removed": |
| 118 | if item.Kind != "purge" { |
| 119 | return ErrUnsupportedVersion |
| 120 | } |
| 121 | default: |
| 122 | return fmt.Errorf("%w: operation phase", ErrUnsupportedVersion) |
| 123 | } |
| 124 | } |
| 125 | for key, item := range state.RecoveryEntries { |
| 126 | if key == "" || item.ID != key || item.SourceKey == "" { |
| 127 | return errors.New("invalid recovery entry") |
| 128 | } |
| 129 | switch item.Status { |
| 130 | case "pending", "failed", "restored": |
| 131 | default: |
| 132 | return fmt.Errorf("%w: recovery status", ErrUnsupportedVersion) |
| 133 | } |
| 134 | } |
| 135 | return nil |
| 136 | } |
| 137 | |
| 138 | func (s *Store) SetLifecycle(ctx context.Context, ids []string, lifecycle string) error { |
| 139 | return s.mutate(ctx, func(state *State) error { |
| 140 | if !validLifecycle(lifecycle) { |
| 141 | return ErrUnsupportedVersion |
| 142 | } |
| 143 | for _, id := range ids { |
| 144 | if state.SessionStates[id].Lifecycle == Deleted { |
| 145 | return ErrMutationConflict |
| 146 | } |
| 147 | if _, ok := sessionOwner(*state, id); !ok { |
| 148 | return ErrSessionNotFound |
| 149 | } |
| 150 | } |
| 151 | for _, id := range ids { |
| 152 | setLifecycle(state, id, lifecycle) |
| 153 | if lifecycle == Active { |
| 154 | owner, _ := sessionOwner(*state, id) |
| 155 | workspace := state.Workspaces[owner] |
| 156 | workspace.Visible = true |
| 157 | state.Workspaces[owner] = workspace |
| 158 | } |
| 159 | } |
| 160 | return nil |
| 161 | }) |
| 162 | } |
| 163 | |
| 164 | func (s *Store) BeginOperation(ctx context.Context, op Operation) error { |
| 165 | return s.mutate(ctx, func(state *State) error { |
| 166 | for _, id := range op.SessionIDs { |
| 167 | if state.SessionStates[id].Lifecycle == Deleted { |
| 168 | return ErrMutationConflict |
| 169 | } |
| 170 | } |
| 171 | if op.ID == "" || !validLifecycle(op.Lifecycle) { |
| 172 | return ErrMutationConflict |
| 173 | } |
| 174 | if old, ok := state.PendingOperations[op.ID]; ok { |
| 175 | if old.Kind != op.Kind || old.RecoveryEntryID != op.RecoveryEntryID || old.Lifecycle != op.Lifecycle || old.WorkspaceID != op.WorkspaceID || !slices.Equal(old.Dependencies, op.Dependencies) || (len(op.SessionIDs) != 0 && !slices.Equal(old.SessionIDs, op.SessionIDs)) { |
| 176 | return ErrMutationConflict |
| 177 | } |
| 178 | return nil |
| 179 | } |
| 180 | if op.ExpectedGeneration != 0 && op.ExpectedGeneration != state.Generation { |
| 181 | return ErrMutationConflict |
| 182 | } |
| 183 | // Bind child admission to the original command's observed state, |
| 184 | // not to a newer snapshot taken after content/ownership validation. |
| 185 | if split := strings.LastIndex(op.ID, "-"); split > 0 { |
| 186 | parent := state.PendingOperations[op.ID[:split]] |
| 187 | for _, id := range op.SessionIDs { |
| 188 | if parent.Kind == "command" && state.SessionStates[id].Generation > parent.ExpectedGeneration { |
| 189 | return ErrMutationConflict |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | op.ExpectedGeneration = state.Generation |
| 194 | op.Phase = "prepared" |
| 195 | if op.SessionIDs == nil { |
| 196 | op.SessionIDs = []string{} |
| 197 | } |
| 198 | state.PendingOperations[op.ID] = op |
| 199 | return nil |
| 200 | }) |
| 201 | } |
| 202 | |
| 203 | func (s *Store) ReserveOperationTargets(ctx context.Context, id string, ids []string, sources ...*SourceMapping) error { |
| 204 | return s.mutate(ctx, func(state *State) error { |
| 205 | op, ok := state.PendingOperations[id] |
| 206 | if !ok || len(ids) == 0 { |
| 207 | return ErrMutationConflict |
| 208 | } |
| 209 | if len(op.SessionIDs) != 0 && !slices.Equal(op.SessionIDs, ids) { |
| 210 | return ErrMutationConflict |
| 211 | } |
| 212 | if len(sources) > 0 && sources[0] != nil { |
| 213 | mapping := sources[0] |
| 214 | if op.Mapping != nil && (op.Mapping.SourceKey != mapping.SourceKey || op.Mapping.Fingerprint != mapping.Fingerprint || op.Mapping.SessionID != mapping.SessionID) { |
| 215 | return ErrMutationConflict |
| 216 | } |
| 217 | if op.Phase == "prepared" { |
| 218 | op.Mapping = mapping |
| 219 | } |
| 220 | } |
| 221 | op.SessionIDs = append([]string{}, ids...) |
| 222 | state.PendingOperations[id] = op |
| 223 | return nil |
| 224 | }) |
| 225 | } |
| 226 | |
| 227 | func (s *Store) PrepareOperationContent(ctx context.Context, id string, ids []string, mapping *SourceMapping, presentation *Presentation) error { |
| 228 | return s.mutate(ctx, func(state *State) error { |
| 229 | op, ok := state.PendingOperations[id] |
| 230 | if !ok { |
| 231 | return ErrMutationConflict |
| 232 | } |
| 233 | if op.Phase != "prepared" { |
| 234 | if !slices.Equal(op.SessionIDs, ids) || !reflect.DeepEqual(op.Mapping, mapping) || !reflect.DeepEqual(op.Presentation, presentation) { |
| 235 | return ErrMutationConflict |
| 236 | } |
| 237 | return nil |
| 238 | } |
| 239 | if len(op.SessionIDs) != 0 && !slices.Equal(op.SessionIDs, ids) { |
| 240 | return ErrMutationConflict |
| 241 | } |
| 242 | op.Phase, op.SessionIDs, op.Mapping, op.Presentation = "content_ready", append([]string{}, ids...), mapping, presentation |
| 243 | state.PendingOperations[id] = op |
| 244 | return nil |
| 245 | }) |
| 246 | } |
| 247 | |
| 248 | // CommitOperation publishes membership, lifecycle and provenance in one durable |
| 249 | // registry replacement. File publication must have been validated beforehand. |
| 250 | func (s *Store) CommitOperation(ctx context.Context, id string) error { |
| 251 | return s.mutate(ctx, func(state *State) error { |
| 252 | if op, ok := state.PendingOperations[id]; ok && op.Kind == "archive-import" { |
| 253 | return ErrMutationConflict |
| 254 | } |
| 255 | return commitOperation(state, id, map[string]bool{}) |
| 256 | }) |
| 257 | } |
| 258 | |
| 259 | // CommitHistoricalArchive publishes a standalone legacy trash import without |
| 260 | // admitting arbitrary archive-import children intended for an atomic batch. |
| 261 | func (s *Store) CommitHistoricalArchive(ctx context.Context, id string, archivedAt ...int64) error { |
| 262 | return s.mutate(ctx, func(state *State) error { |
| 263 | op, ok := state.PendingOperations[id] |
| 264 | if !ok || op.Kind != "archive-import" || op.Lifecycle != Archived || op.Mapping == nil { |
| 265 | return ErrMutationConflict |
| 266 | } |
| 267 | if op.Phase == "committed" { |
| 268 | return nil |
| 269 | } |
| 270 | if err := commitOperation(state, id, map[string]bool{}); err != nil { |
| 271 | return err |
| 272 | } |
| 273 | // No proven archive timestamp is available for these old records. |
| 274 | for _, sessionID := range op.SessionIDs { |
| 275 | status := state.SessionStates[sessionID] |
| 276 | status.ArchivedAt = 0 |
| 277 | if len(archivedAt) > 0 && archivedAt[0] > 0 { |
| 278 | status.ArchivedAt = archivedAt[0] |
| 279 | } |
| 280 | state.SessionStates[sessionID] = status |
| 281 | } |
| 282 | return nil |
| 283 | }) |
| 284 | } |
| 285 | |
| 286 | func commitOperation(state *State, id string, visiting map[string]bool) error { |
| 287 | if visiting[id] { |
| 288 | return ErrMutationConflict |
| 289 | } |
| 290 | visiting[id] = true |
| 291 | defer delete(visiting, id) |
| 292 | op, ok := state.PendingOperations[id] |
| 293 | if !ok { |
| 294 | return ErrMutationConflict |
| 295 | } |
| 296 | if op.Phase == "committed" { |
| 297 | return nil |
| 298 | } |
| 299 | if op.Phase != "content_ready" || len(op.SessionIDs) == 0 { |
| 300 | return ErrMutationConflict |
| 301 | } |
| 302 | for _, dependency := range op.Dependencies { |
| 303 | child, ok := state.PendingOperations[dependency] |
| 304 | if !ok || child.Kind != "archive-import" || child.Phase != "content_ready" { |
| 305 | return ErrMutationConflict |
| 306 | } |
| 307 | for _, target := range child.SessionIDs { |
| 308 | if !slices.Contains(op.SessionIDs, target) { |
| 309 | return ErrMutationConflict |
| 310 | } |
| 311 | } |
| 312 | if err := commitOperation(state, dependency, visiting); err != nil { |
| 313 | return err |
| 314 | } |
| 315 | } |
| 316 | for _, sessionID := range op.SessionIDs { |
| 317 | if state.SessionStates[sessionID].Lifecycle == Deleted { |
| 318 | return ErrMutationConflict |
| 319 | } |
| 320 | if current, exists := state.SessionStates[sessionID]; exists && current.Generation > op.ExpectedGeneration && current.Generation != state.Generation+1 { |
| 321 | return ErrMutationConflict |
| 322 | } |
| 323 | owner, attached := sessionOwner(*state, sessionID) |
| 324 | if attached && op.WorkspaceID != "" && owner != op.WorkspaceID { |
| 325 | return ErrMutationConflict |
| 326 | } |
| 327 | if !attached { |
| 328 | workspace, exists := state.Workspaces[op.WorkspaceID] |
| 329 | if !exists { |
| 330 | return ErrWorkspaceNotFound |
| 331 | } |
| 332 | workspace.SessionIDs = insertBefore(workspace.SessionIDs, sessionID, "") |
| 333 | workspace.UpdatedAt = time.Now().UTC() |
| 334 | state.Workspaces[workspace.ID] = workspace |
| 335 | owner = workspace.ID |
| 336 | } |
| 337 | setLifecycle(state, sessionID, op.Lifecycle) |
| 338 | if op.Lifecycle == Active { |
| 339 | workspace := state.Workspaces[owner] |
| 340 | workspace.Visible = true |
| 341 | state.Workspaces[owner] = workspace |
| 342 | } |
| 343 | if op.Presentation != nil { |
| 344 | state.Presentation[sessionID] = *op.Presentation |
| 345 | } |
| 346 | } |
| 347 | if err := commitSourceMapping(state, op.Mapping); err != nil { |
| 348 | return err |
| 349 | } |
| 350 | if op.RecoveryEntryID != "" { |
| 351 | entry, exists := state.RecoveryEntries[op.RecoveryEntryID] |
| 352 | if !exists { |
| 353 | return ErrMutationConflict |
| 354 | } |
| 355 | entry.Status, entry.SessionID = "restored", op.SessionIDs[0] |
| 356 | state.RecoveryEntries[entry.ID] = entry |
| 357 | } |
| 358 | op.Phase, op.ResultGeneration = "committed", state.Generation+1 |
| 359 | state.PendingOperations[id] = op |
| 360 | return nil |
| 361 | } |
| 362 | |
| 363 | // BeginPurge leaves a durable tombstone before content removal. It prevents |
| 364 | // restore or source discovery from resurrecting a partially purged session. |
| 365 | func (s *Store) BeginPurge(ctx context.Context, id string, expected ...uint64) error { |
| 366 | return s.mutate(ctx, func(state *State) error { |
| 367 | key := "purge-" + id |
| 368 | if op, exists := state.PendingOperations[key]; exists { |
| 369 | if op.Kind != "purge" { |
| 370 | return ErrMutationConflict |
| 371 | } |
| 372 | return nil |
| 373 | } |
| 374 | if state.SessionStates[id].Lifecycle != Archived { |
| 375 | return ErrMutationConflict |
| 376 | } |
| 377 | if len(expected) > 0 && state.SessionStates[id].Generation > expected[0] { |
| 378 | return ErrMutationConflict |
| 379 | } |
| 380 | state.PendingOperations[key] = Operation{ID: key, Kind: "purge", Phase: "prepared", Lifecycle: Deleted, SessionIDs: []string{id}, ExpectedGeneration: state.Generation} |
| 381 | return nil |
| 382 | }) |
| 383 | } |
| 384 | |
| 385 | func (s *Store) AdvancePurge(ctx context.Context, id, phase string) error { |
| 386 | return s.mutate(ctx, func(state *State) error { |
| 387 | key := "purge-" + id |
| 388 | op, ok := state.PendingOperations[key] |
| 389 | if !ok || op.Kind != "purge" { |
| 390 | return ErrMutationConflict |
| 391 | } |
| 392 | if op.Phase == "committed" || op.Phase == phase || op.Phase == "content_removed" { |
| 393 | return nil |
| 394 | } |
| 395 | if phase == "tombstoned" && op.Phase == "prepared" { |
| 396 | if state.SessionStates[id].Lifecycle != Archived || state.SessionStates[id].Generation > op.ExpectedGeneration { |
| 397 | return ErrMutationConflict |
| 398 | } |
| 399 | setLifecycle(state, id, Deleted) |
| 400 | } else if phase != "content_removed" || op.Phase != "tombstoned" { |
| 401 | return ErrMutationConflict |
| 402 | } |
| 403 | op.Phase = phase |
| 404 | state.PendingOperations[key] = op |
| 405 | return nil |
| 406 | }) |
| 407 | } |
| 408 | |
| 409 | func (s *Store) CompletePurge(ctx context.Context, id string) error { |
| 410 | return s.mutate(ctx, func(state *State) error { |
| 411 | key := "purge-" + id |
| 412 | op, ok := state.PendingOperations[key] |
| 413 | if !ok || op.Kind != "purge" || state.SessionStates[id].Lifecycle != Deleted { |
| 414 | return ErrMutationConflict |
| 415 | } |
| 416 | if op.Phase == "committed" { |
| 417 | return nil |
| 418 | } |
| 419 | if op.Phase != "content_removed" { |
| 420 | return ErrMutationConflict |
| 421 | } |
| 422 | for key, workspace := range state.Workspaces { |
| 423 | workspace.SessionIDs = remove(workspace.SessionIDs, id) |
| 424 | state.Workspaces[key] = workspace |
| 425 | } |
| 426 | delete(state.Presentation, id) |
| 427 | op.Phase, op.ResultGeneration = "committed", state.Generation+1 |
| 428 | state.PendingOperations[key] = op |
| 429 | return nil |
| 430 | }) |
| 431 | } |
| 432 | |
| 433 | func (s *Store) RecordSource(ctx context.Context, mapping SourceMapping, presentation Presentation) error { |
| 434 | return s.mutate(ctx, func(state *State) error { |
| 435 | if old, ok := state.SourceMappings[mapping.SourceKey]; ok { |
| 436 | if old.SessionID != mapping.SessionID || old.Fingerprint != mapping.Fingerprint { |
| 437 | return ErrMutationConflict |
| 438 | } |
| 439 | return nil |
| 440 | } |
| 441 | state.SourceMappings[mapping.SourceKey] = mapping |
| 442 | if _, exists := state.Presentation[mapping.SessionID]; !exists { |
| 443 | state.Presentation[mapping.SessionID] = presentation |
| 444 | } |
| 445 | return nil |
| 446 | }) |
| 447 | } |
| 448 | |
| 449 | func (s *Store) UpdatePresentation(ctx context.Context, ids []string, title *string, pinned *bool) error { |
| 450 | return s.mutate(ctx, func(state *State) error { |
| 451 | for _, id := range ids { |
| 452 | if _, ok := sessionOwner(*state, id); !ok { |
| 453 | return ErrSessionNotFound |
| 454 | } |
| 455 | value, exists := state.Presentation[id] |
| 456 | if !exists { |
| 457 | value.SortOrder = -1 |
| 458 | } |
| 459 | if title != nil { |
| 460 | value.Title = *title |
| 461 | } |
| 462 | if pinned != nil { |
| 463 | value.Pinned = *pinned |
| 464 | } |
| 465 | state.Presentation[id] = value |
| 466 | } |
| 467 | return nil |
| 468 | }) |
| 469 | } |
| 470 | |
| 471 | // EnsureSessionTopic publishes the initial display group without letting |
| 472 | // later tab rebuilds overwrite a user's persisted presentation. |
| 473 | func (s *Store) EnsureSessionTopic(ctx context.Context, id, topicID, title string) error { |
| 474 | if id == "" || topicID == "" { |
| 475 | return nil |
| 476 | } |
| 477 | return s.mutate(ctx, func(state *State) error { |
| 478 | if _, ok := sessionOwner(*state, id); !ok { |
| 479 | return ErrSessionNotFound |
| 480 | } |
| 481 | value := state.Presentation[id] |
| 482 | if value.TopicID != "" { |
| 483 | return nil |
| 484 | } |
| 485 | value.TopicID = topicID |
| 486 | if value.Title == "" { |
| 487 | value.Title = title |
| 488 | } |
| 489 | state.Presentation[id] = value |
| 490 | return nil |
| 491 | }) |
| 492 | } |
| 493 | |
| 494 | func (s *Store) RecordRecovery(ctx context.Context, entry RecoveryEntry) error { |
| 495 | return s.mutate(ctx, func(state *State) error { |
| 496 | if old, ok := state.RecoveryEntries[entry.ID]; ok { |
| 497 | if old.Status == "restored" && old.Fingerprint == entry.Fingerprint { |
| 498 | return nil |
| 499 | } |
| 500 | if strings.Contains(old.Reason, "conflict") && !strings.Contains(entry.Reason, "conflict") { |
| 501 | entry.Reason = old.Reason |
| 502 | } |
| 503 | entry.extra = old.extra |
| 504 | } |
| 505 | if entry.Status == "" { |
| 506 | entry.Status = "pending" |
| 507 | } |
| 508 | state.RecoveryEntries[entry.ID] = entry |
| 509 | return nil |
| 510 | }) |
| 511 | } |
| 512 | |
| 513 | // ReconcileDiscoveredSession rechecks ownership under the writer lock. A scan |
| 514 | // snapshot can predate a concurrent create, import, archive, or restore. |
| 515 | // Discovery must never classify those published/reserved IDs as orphans. |
| 516 | func (s *Store) ReconcileDiscoveredSession(ctx context.Context, entry RecoveryEntry, workspace *Workspace) error { |
| 517 | return s.mutate(ctx, func(state *State) error { |
| 518 | id := entry.SessionID |
| 519 | if state.SessionStates[id].Lifecycle == Deleted { |
| 520 | return nil |
| 521 | } |
| 522 | if id == "" { |
| 523 | return errors.New("discovery requires a session id") |
| 524 | } |
| 525 | if _, ok := sessionOwner(*state, id); ok { |
| 526 | return nil |
| 527 | } |
| 528 | if _, ok := state.PendingCreates[id]; ok { |
| 529 | return nil |
| 530 | } |
| 531 | for _, op := range state.PendingOperations { |
| 532 | if op.Phase != "committed" && slices.Contains(op.SessionIDs, id) { |
| 533 | return nil |
| 534 | } |
| 535 | } |
| 536 | if lifecycle, ok := state.SessionStates[id]; ok && lifecycle.Lifecycle != Active { |
| 537 | workspace = nil |
| 538 | entry.Reason = "historical_state_unknown" |
| 539 | } |
| 540 | if workspace == nil { |
| 541 | if old, ok := state.RecoveryEntries[entry.ID]; ok { |
| 542 | if old.Status == "restored" { |
| 543 | return nil |
| 544 | } |
| 545 | entry.extra = old.extra |
| 546 | } |
| 547 | state.RecoveryEntries[entry.ID] = entry |
| 548 | return nil |
| 549 | } |
| 550 | value, ok := state.Workspaces[workspace.ID] |
| 551 | if !ok { |
| 552 | value = *workspace |
| 553 | state.WorkspaceIDs = append(state.WorkspaceIDs, value.ID) |
| 554 | } |
| 555 | value.SessionIDs = append(value.SessionIDs, id) |
| 556 | value.UpdatedAt = time.Now().UTC() |
| 557 | state.Workspaces[value.ID] = value |
| 558 | return nil |
| 559 | }) |
| 560 | } |
| 561 | |
| 562 | // backupV1 runs under the same cross-process lock as the schema publication. |
| 563 | // Content-addressed backups are immutable: a repeat never overwrites evidence. |
| 564 | func backupV1(path string) error { |
| 565 | body, err := os.ReadFile(path) |
| 566 | if os.IsNotExist(err) { |
| 567 | return nil |
| 568 | } |
| 569 | if err != nil { |
| 570 | return err |
| 571 | } |
| 572 | var header struct { |
| 573 | Version int `json:"version"` |
| 574 | } |
| 575 | if err := json.Unmarshal(body, &header); err != nil { |
| 576 | return err |
| 577 | } |
| 578 | if header.Version != 1 { |
| 579 | return nil |
| 580 | } |
| 581 | digest := sha256.Sum256(body) |
| 582 | backup := filepath.Join(filepath.Dir(path), "upgrade-backups", "workspace-v1-"+hex.EncodeToString(digest[:])+".json") |
| 583 | if old, err := os.ReadFile(backup); err == nil { |
| 584 | if sha256.Sum256(old) != digest { |
| 585 | return errors.New("workspace upgrade backup is corrupt") |
| 586 | } |
| 587 | return nil |
| 588 | } else if !os.IsNotExist(err) { |
| 589 | return err |
| 590 | } |
| 591 | if err := os.MkdirAll(filepath.Dir(backup), 0700); err != nil { |
| 592 | return err |
| 593 | } |
| 594 | return fileutil.AtomicWriteFileStrict(backup, body, 0600) |
| 595 | } |
| 596 | |
| 597 | // unknownFields retains future, user-owned metadata during read/modify/write. |
| 598 | func unknownFields(body []byte, names ...string) (map[string]json.RawMessage, error) { |
| 599 | var fields map[string]json.RawMessage |
| 600 | if err := json.Unmarshal(body, &fields); err != nil { |
| 601 | return nil, err |
| 602 | } |
| 603 | for _, name := range names { |
| 604 | delete(fields, name) |
| 605 | } |
| 606 | return fields, nil |
| 607 | } |
| 608 | |
| 609 | func commitSourceMapping(state *State, mapping *SourceMapping) error { |
| 610 | if mapping != nil { |
| 611 | mapping := *mapping |
| 612 | if old, exists := state.SourceMappings[mapping.SourceKey]; exists && (old.SessionID != mapping.SessionID || old.Fingerprint != mapping.Fingerprint) { |
| 613 | return ErrMutationConflict |
| 614 | } |
| 615 | state.SourceMappings[mapping.SourceKey] = mapping |
| 616 | } |
| 617 | return nil |
| 618 | } |
| 619 |