| 1 | package workspacestate |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "crypto/sha256" |
| 7 | "encoding/hex" |
| 8 | "encoding/json" |
| 9 | "errors" |
| 10 | "fmt" |
| 11 | "os" |
| 12 | "path/filepath" |
| 13 | "reflect" |
| 14 | "slices" |
| 15 | "strings" |
| 16 | "time" |
| 17 | |
| 18 | "reasonix/internal/fileutil" |
| 19 | ) |
| 20 | |
| 21 | const ( |
| 22 | Active = "active" |
| 23 | Archived = "archived" |
| 24 | Deleted = "deleted" |
| 25 | ) |
| 26 | |
| 27 | type SessionState struct { |
| 28 | Lifecycle string `json:"lifecycle"` |
| 29 | Generation uint64 `json:"generation"` |
| 30 | ArchivedAt int64 `json:"archivedAt,omitempty"` |
| 31 | extra map[string]json.RawMessage |
| 32 | } |
| 33 | type SourceMapping struct { |
| 34 | RetainedArtifacts []string `json:"retainedArtifacts,omitempty"` |
| 35 | SourceKey string `json:"sourceKey"` |
| 36 | Path string `json:"path"` |
| 37 | HeadID string `json:"headId,omitempty"` |
| 38 | Format string `json:"format"` |
| 39 | Fingerprint string `json:"fingerprint"` |
| 40 | SessionID string `json:"sessionId"` |
| 41 | WorkspaceID string `json:"workspaceId"` |
| 42 | extra map[string]json.RawMessage |
| 43 | } |
| 44 | type Presentation struct { |
| 45 | TopicID string `json:"topicId,omitempty"` |
| 46 | Title string `json:"title,omitempty"` |
| 47 | Pinned bool `json:"pinned,omitempty"` |
| 48 | SortOrder int `json:"sortOrder"` |
| 49 | extra map[string]json.RawMessage |
| 50 | } |
| 51 | type RecoveryEntry struct { |
| 52 | ID string `json:"id"` |
| 53 | SourceKey string `json:"sourceKey"` |
| 54 | Path string `json:"path,omitempty"` |
| 55 | HeadID string `json:"headId,omitempty"` |
| 56 | SessionID string `json:"sessionId,omitempty"` |
| 57 | WorkspaceID string `json:"workspaceId,omitempty"` |
| 58 | Scope string `json:"scope,omitempty"` |
| 59 | WorkspaceRoot string `json:"workspaceRoot,omitempty"` |
| 60 | Format string `json:"format"` |
| 61 | Reason string `json:"reason"` |
| 62 | Status string `json:"status"` |
| 63 | Fingerprint string `json:"fingerprint,omitempty"` |
| 64 | extra map[string]json.RawMessage |
| 65 | } |
| 66 | type Operation struct { |
| 67 | RequestFingerprint string `json:"requestFingerprint,omitempty"` |
| 68 | Request json.RawMessage `json:"request,omitempty"` |
| 69 | Result json.RawMessage `json:"result,omitempty"` |
| 70 | ID string `json:"id"` |
| 71 | Kind string `json:"kind"` |
| 72 | Phase string `json:"phase"` |
| 73 | SessionIDs []string `json:"sessionIds"` |
| 74 | WorkspaceID string `json:"workspaceId,omitempty"` |
| 75 | Lifecycle string `json:"lifecycle"` |
| 76 | ExpectedGeneration uint64 `json:"expectedGeneration"` |
| 77 | ResultGeneration uint64 `json:"resultGeneration,omitempty"` |
| 78 | RecoveryEntryID string `json:"recoveryEntryId,omitempty"` |
| 79 | Mapping *SourceMapping `json:"mapping,omitempty"` |
| 80 | Presentation *Presentation `json:"presentation,omitempty"` |
| 81 | Dependencies []string `json:"dependencies,omitempty"` |
| 82 | extra map[string]json.RawMessage |
| 83 | } |
| 84 | |
| 85 | type PurgeState uint8 |
| 86 | |
| 87 | const ( |
| 88 | PurgeAbsent PurgeState = iota |
| 89 | PurgePrepared |
| 90 | PurgePreparedStale |
| 91 | PurgeTombstoned |
| 92 | PurgeContentRemoved |
| 93 | PurgeCommitted |
| 94 | PurgeInvalid |
| 95 | ) |
| 96 | |
| 97 | func validLifecycle(value string) bool { |
| 98 | return value == Active || value == Archived || value == Deleted |
| 99 | } |
| 100 | func setLifecycle(state *State, id, lifecycle string) { |
| 101 | current := state.SessionStates[id] |
| 102 | if lifecycle == Archived && current.Lifecycle != Archived { |
| 103 | current.ArchivedAt = time.Now().UnixMilli() |
| 104 | } |
| 105 | current.Lifecycle, current.Generation = lifecycle, state.Generation+1 |
| 106 | state.SessionStates[id] = current |
| 107 | } |
| 108 | func validateLifecycleState(state State) error { |
| 109 | for id, item := range state.SessionStates { |
| 110 | if strings.TrimSpace(id) == "" || !validLifecycle(item.Lifecycle) { |
| 111 | return fmt.Errorf("%w: session lifecycle", ErrUnsupportedVersion) |
| 112 | } |
| 113 | } |
| 114 | for key, item := range state.SourceMappings { |
| 115 | if key == "" || item.SourceKey != key || item.SessionID == "" || item.Fingerprint == "" { |
| 116 | return errors.New("invalid source mapping") |
| 117 | } |
| 118 | } |
| 119 | for key, item := range state.PendingOperations { |
| 120 | if key == "" || item.ID != key || !validLifecycle(item.Lifecycle) { |
| 121 | return errors.New("invalid session operation") |
| 122 | } |
| 123 | switch item.Kind { |
| 124 | case "import", "archive-import", "archive", "purge", "restore", "command": |
| 125 | default: |
| 126 | return fmt.Errorf("%w: operation kind", ErrUnsupportedVersion) |
| 127 | } |
| 128 | switch item.Phase { |
| 129 | case "prepared", "content_ready", "committed": |
| 130 | case "tombstoned", "content_removed": |
| 131 | if item.Kind != "purge" { |
| 132 | return ErrUnsupportedVersion |
| 133 | } |
| 134 | default: |
| 135 | return fmt.Errorf("%w: operation phase", ErrUnsupportedVersion) |
| 136 | } |
| 137 | } |
| 138 | for key, item := range state.RecoveryEntries { |
| 139 | if key == "" || item.ID != key || item.SourceKey == "" { |
| 140 | return errors.New("invalid recovery entry") |
| 141 | } |
| 142 | switch item.Status { |
| 143 | case "pending", "failed", "restored": |
| 144 | default: |
| 145 | return fmt.Errorf("%w: recovery status", ErrUnsupportedVersion) |
| 146 | } |
| 147 | } |
| 148 | return nil |
| 149 | } |
| 150 | |
| 151 | func (s *Store) SetLifecycle(ctx context.Context, ids []string, lifecycle string) error { |
| 152 | return s.mutate(ctx, func(state *State) error { |
| 153 | if !validLifecycle(lifecycle) { |
| 154 | return ErrUnsupportedVersion |
| 155 | } |
| 156 | for _, id := range ids { |
| 157 | if state.SessionStates[id].Lifecycle == Deleted { |
| 158 | return ErrMutationConflict |
| 159 | } |
| 160 | if _, ok := sessionOwner(*state, id); !ok { |
| 161 | return ErrSessionNotFound |
| 162 | } |
| 163 | if err := validateLifecycleSupersedesPreparedPurge(*state, id); err != nil { |
| 164 | return err |
| 165 | } |
| 166 | } |
| 167 | for _, id := range ids { |
| 168 | cancelPreparedPurge(state, id) |
| 169 | setLifecycle(state, id, lifecycle) |
| 170 | if lifecycle == Active { |
| 171 | owner, _ := sessionOwner(*state, id) |
| 172 | workspace := state.Workspaces[owner] |
| 173 | workspace.Visible = true |
| 174 | state.Workspaces[owner] = workspace |
| 175 | } |
| 176 | } |
| 177 | return nil |
| 178 | }) |
| 179 | } |
| 180 | |
| 181 | func (s *Store) BeginOperation(ctx context.Context, op Operation) error { |
| 182 | return s.mutate(ctx, func(state *State) error { |
| 183 | for _, id := range op.SessionIDs { |
| 184 | if state.SessionStates[id].Lifecycle == Deleted { |
| 185 | return ErrMutationConflict |
| 186 | } |
| 187 | } |
| 188 | if op.ID == "" || !validLifecycle(op.Lifecycle) { |
| 189 | return ErrMutationConflict |
| 190 | } |
| 191 | if old, ok := state.PendingOperations[op.ID]; ok { |
| 192 | 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)) { |
| 193 | return ErrMutationConflict |
| 194 | } |
| 195 | return nil |
| 196 | } |
| 197 | if op.ExpectedGeneration != 0 && op.ExpectedGeneration != state.Generation { |
| 198 | return ErrMutationConflict |
| 199 | } |
| 200 | if err := validateArchiveImportReservation(state, op); err != nil { |
| 201 | return err |
| 202 | } |
| 203 | // Bind child admission to the original command's observed state, |
| 204 | // not to a newer snapshot taken after content/ownership validation. |
| 205 | if split := strings.LastIndex(op.ID, "-"); split > 0 { |
| 206 | parent := state.PendingOperations[op.ID[:split]] |
| 207 | for _, id := range op.SessionIDs { |
| 208 | if parent.Kind == "command" && state.SessionStates[id].Generation > parent.ExpectedGeneration { |
| 209 | return ErrMutationConflict |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | op.ExpectedGeneration = state.Generation |
| 214 | op.Phase = "prepared" |
| 215 | if op.SessionIDs == nil { |
| 216 | op.SessionIDs = []string{} |
| 217 | } |
| 218 | state.PendingOperations[op.ID] = op |
| 219 | return nil |
| 220 | }) |
| 221 | } |
| 222 | |
| 223 | func (s *Store) ReserveOperationTargets(ctx context.Context, id string, ids []string, sources ...*SourceMapping) error { |
| 224 | return s.mutate(ctx, func(state *State) error { |
| 225 | op, ok := state.PendingOperations[id] |
| 226 | if !ok || len(ids) == 0 { |
| 227 | return ErrMutationConflict |
| 228 | } |
| 229 | if len(op.SessionIDs) != 0 && !slices.Equal(op.SessionIDs, ids) { |
| 230 | return ErrMutationConflict |
| 231 | } |
| 232 | if len(sources) > 0 && sources[0] != nil { |
| 233 | mapping := sources[0] |
| 234 | if op.Mapping != nil && (op.Mapping.SourceKey != mapping.SourceKey || op.Mapping.Fingerprint != mapping.Fingerprint || op.Mapping.SessionID != mapping.SessionID) { |
| 235 | return ErrMutationConflict |
| 236 | } |
| 237 | if op.Phase == "prepared" { |
| 238 | op.Mapping = mapping |
| 239 | } |
| 240 | } |
| 241 | op.SessionIDs = append([]string{}, ids...) |
| 242 | state.PendingOperations[id] = op |
| 243 | return nil |
| 244 | }) |
| 245 | } |
| 246 | |
| 247 | func (s *Store) PrepareOperationContent(ctx context.Context, id string, ids []string, mapping *SourceMapping, presentation *Presentation) error { |
| 248 | return s.mutate(ctx, func(state *State) error { |
| 249 | op, ok := state.PendingOperations[id] |
| 250 | if !ok { |
| 251 | return ErrMutationConflict |
| 252 | } |
| 253 | if op.Phase != "prepared" { |
| 254 | if !slices.Equal(op.SessionIDs, ids) || !reflect.DeepEqual(op.Mapping, mapping) || !reflect.DeepEqual(op.Presentation, presentation) { |
| 255 | return ErrMutationConflict |
| 256 | } |
| 257 | return nil |
| 258 | } |
| 259 | if len(op.SessionIDs) != 0 && !slices.Equal(op.SessionIDs, ids) { |
| 260 | return ErrMutationConflict |
| 261 | } |
| 262 | op.Phase, op.SessionIDs, op.Mapping, op.Presentation = "content_ready", append([]string{}, ids...), mapping, presentation |
| 263 | state.PendingOperations[id] = op |
| 264 | return nil |
| 265 | }) |
| 266 | } |
| 267 | |
| 268 | // CommitOperation publishes membership, lifecycle and provenance in one durable |
| 269 | // registry replacement. File publication must have been validated beforehand. |
| 270 | func (s *Store) CommitOperation(ctx context.Context, id string) error { |
| 271 | return s.mutate(ctx, func(state *State) error { |
| 272 | if op, ok := state.PendingOperations[id]; ok && op.Kind == "archive-import" { |
| 273 | return ErrMutationConflict |
| 274 | } |
| 275 | if err := validateTopicRemovalArchive(*state, state.PendingOperations[id]); err != nil { |
| 276 | return err |
| 277 | } |
| 278 | return commitOperation(state, id, map[string]bool{}) |
| 279 | }) |
| 280 | } |
| 281 | |
| 282 | // CommitHistoricalArchive publishes a standalone legacy trash import without |
| 283 | // admitting arbitrary archive-import children intended for an atomic batch. |
| 284 | func (s *Store) CommitHistoricalArchive(ctx context.Context, id string, archivedAt ...int64) error { |
| 285 | return s.mutate(ctx, func(state *State) error { |
| 286 | op, ok := state.PendingOperations[id] |
| 287 | if !ok || op.Kind != "archive-import" || op.Lifecycle != Archived || op.Mapping == nil { |
| 288 | return ErrMutationConflict |
| 289 | } |
| 290 | if op.Phase == "committed" { |
| 291 | return nil |
| 292 | } |
| 293 | if err := commitOperation(state, id, map[string]bool{}); err != nil { |
| 294 | return err |
| 295 | } |
| 296 | // No proven archive timestamp is available for these old records. |
| 297 | for _, sessionID := range op.SessionIDs { |
| 298 | status := state.SessionStates[sessionID] |
| 299 | status.ArchivedAt = 0 |
| 300 | if len(archivedAt) > 0 && archivedAt[0] > 0 { |
| 301 | status.ArchivedAt = archivedAt[0] |
| 302 | } |
| 303 | state.SessionStates[sessionID] = status |
| 304 | } |
| 305 | return nil |
| 306 | }) |
| 307 | } |
| 308 | |
| 309 | func commitOperation(state *State, id string, visiting map[string]bool) error { |
| 310 | if visiting[id] { |
| 311 | return ErrMutationConflict |
| 312 | } |
| 313 | visiting[id] = true |
| 314 | defer delete(visiting, id) |
| 315 | op, ok := state.PendingOperations[id] |
| 316 | if !ok { |
| 317 | return ErrMutationConflict |
| 318 | } |
| 319 | if op.Phase == "committed" { |
| 320 | return nil |
| 321 | } |
| 322 | if op.Phase != "content_ready" || len(op.SessionIDs) == 0 { |
| 323 | return ErrMutationConflict |
| 324 | } |
| 325 | for _, dependency := range op.Dependencies { |
| 326 | child, ok := state.PendingOperations[dependency] |
| 327 | if !ok || child.Kind != "archive-import" || child.Phase != "content_ready" { |
| 328 | return ErrMutationConflict |
| 329 | } |
| 330 | for _, target := range child.SessionIDs { |
| 331 | if !slices.Contains(op.SessionIDs, target) { |
| 332 | return ErrMutationConflict |
| 333 | } |
| 334 | } |
| 335 | if err := commitOperation(state, dependency, visiting); err != nil { |
| 336 | return err |
| 337 | } |
| 338 | } |
| 339 | for _, sessionID := range op.SessionIDs { |
| 340 | if err := validateLifecycleSupersedesPreparedPurge(*state, sessionID); err != nil { |
| 341 | return err |
| 342 | } |
| 343 | if state.SessionStates[sessionID].Lifecycle == Deleted { |
| 344 | return ErrMutationConflict |
| 345 | } |
| 346 | if current, exists := state.SessionStates[sessionID]; exists && current.Generation > op.ExpectedGeneration && current.Generation != state.Generation+1 { |
| 347 | return ErrMutationConflict |
| 348 | } |
| 349 | owner, attached := sessionOwner(*state, sessionID) |
| 350 | if attached && op.WorkspaceID != "" && owner != op.WorkspaceID { |
| 351 | return ErrMutationConflict |
| 352 | } |
| 353 | if !attached { |
| 354 | workspace, exists := state.Workspaces[op.WorkspaceID] |
| 355 | if !exists { |
| 356 | return ErrWorkspaceNotFound |
| 357 | } |
| 358 | workspace.SessionIDs = insertBefore(workspace.SessionIDs, sessionID, "") |
| 359 | // Source adoption replaces the imported source slot below. Publishing |
| 360 | // a canonical default first would incorrectly override that choice. |
| 361 | if op.Mapping == nil { |
| 362 | attachOrganizationSession(&workspace, sessionID, "") |
| 363 | mirrorOrganizationOrder(&workspace) |
| 364 | } |
| 365 | workspace.UpdatedAt = time.Now().UTC() |
| 366 | state.Workspaces[workspace.ID] = workspace |
| 367 | owner = workspace.ID |
| 368 | } |
| 369 | cancelPreparedPurge(state, sessionID) |
| 370 | setLifecycle(state, sessionID, op.Lifecycle) |
| 371 | if op.Lifecycle == Active { |
| 372 | workspace := state.Workspaces[owner] |
| 373 | workspace.Visible = true |
| 374 | state.Workspaces[owner] = workspace |
| 375 | } |
| 376 | if op.Presentation != nil { |
| 377 | state.Presentation[sessionID] = *op.Presentation |
| 378 | } |
| 379 | } |
| 380 | if err := commitSourceMapping(state, op.Mapping); err != nil { |
| 381 | return err |
| 382 | } |
| 383 | if op.RecoveryEntryID != "" { |
| 384 | entry, exists := state.RecoveryEntries[op.RecoveryEntryID] |
| 385 | if !exists { |
| 386 | return ErrMutationConflict |
| 387 | } |
| 388 | entry.Status, entry.SessionID = "restored", op.SessionIDs[0] |
| 389 | state.RecoveryEntries[entry.ID] = entry |
| 390 | settleRecoveryVersion(state, entry) |
| 391 | } |
| 392 | op.Phase, op.ResultGeneration = "committed", state.Generation+1 |
| 393 | state.PendingOperations[id] = op |
| 394 | return nil |
| 395 | } |
| 396 | |
| 397 | func ClassifyPurge(state State, id string) PurgeState { |
| 398 | key := "purge-" + id |
| 399 | op, exists := state.PendingOperations[key] |
| 400 | if !exists { |
| 401 | return PurgeAbsent |
| 402 | } |
| 403 | status, known := state.SessionStates[id] |
| 404 | if !known || op.ID != key || op.Kind != "purge" || op.Lifecycle != Deleted || len(op.SessionIDs) != 1 || op.SessionIDs[0] != id { |
| 405 | return PurgeInvalid |
| 406 | } |
| 407 | switch op.Phase { |
| 408 | case "prepared": |
| 409 | if status.Lifecycle == Deleted { |
| 410 | return PurgeInvalid |
| 411 | } |
| 412 | if status.Lifecycle != Archived || status.Generation > op.ExpectedGeneration { |
| 413 | return PurgePreparedStale |
| 414 | } |
| 415 | return PurgePrepared |
| 416 | case "tombstoned": |
| 417 | if status.Lifecycle == Deleted { |
| 418 | return PurgeTombstoned |
| 419 | } |
| 420 | case "content_removed": |
| 421 | if status.Lifecycle == Deleted { |
| 422 | return PurgeContentRemoved |
| 423 | } |
| 424 | case "committed": |
| 425 | if status.Lifecycle == Deleted { |
| 426 | return PurgeCommitted |
| 427 | } |
| 428 | } |
| 429 | return PurgeInvalid |
| 430 | } |
| 431 | |
| 432 | func validateLifecycleSupersedesPreparedPurge(state State, id string) error { |
| 433 | switch ClassifyPurge(state, id) { |
| 434 | case PurgeAbsent, PurgePrepared, PurgePreparedStale: |
| 435 | return nil |
| 436 | default: |
| 437 | return ErrMutationConflict |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | func cancelPreparedPurge(state *State, id string) { |
| 442 | key := "purge-" + id |
| 443 | if op, exists := state.PendingOperations[key]; exists && op.Kind == "purge" && op.Phase == "prepared" { |
| 444 | delete(state.PendingOperations, key) |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | func samePurgeIdentity(left, right Operation) bool { |
| 449 | return left.ID == right.ID && left.Kind == "purge" && right.Kind == "purge" && left.Lifecycle == right.Lifecycle && |
| 450 | left.ExpectedGeneration == right.ExpectedGeneration && slices.Equal(left.SessionIDs, right.SessionIDs) && bytes.Equal(left.Request, right.Request) |
| 451 | } |
| 452 | |
| 453 | // BeginPurge atomically validates the archived generation, publishes the |
| 454 | // deletion tombstone and records the resumable purge operation. |
| 455 | func (s *Store) BeginPurge(ctx context.Context, id string, expected uint64) error { |
| 456 | return s.beginOrResumePurge(ctx, id, expected, nil, false) |
| 457 | } |
| 458 | |
| 459 | // ResumePurge continues only the observed operation. It cannot recreate a |
| 460 | // deletion intent after a restore superseded that operation. |
| 461 | func (s *Store) ResumePurge(ctx context.Context, id string, observed Operation) error { |
| 462 | return s.beginOrResumePurge(ctx, id, observed.ExpectedGeneration, &observed, false) |
| 463 | } |
| 464 | |
| 465 | // ResumePurgeForRequest keeps both the request snapshot and the observed |
| 466 | // transaction identity. Neither may be refreshed while waiting for locks. |
| 467 | func (s *Store) ResumePurgeForRequest(ctx context.Context, id string, expected uint64, observed Operation) error { |
| 468 | return s.beginOrResumePurge(ctx, id, expected, &observed, false) |
| 469 | } |
| 470 | |
| 471 | func (s *Store) beginOrResumePurge(ctx context.Context, id string, expected uint64, observed *Operation, cleanupSources bool) error { |
| 472 | stale := false |
| 473 | err := s.mutate(ctx, func(state *State) error { |
| 474 | key := "purge-" + id |
| 475 | current, exists := state.PendingOperations[key] |
| 476 | if observed != nil && (!exists || !samePurgeIdentity(current, *observed)) { |
| 477 | return fmt.Errorf("%w: observed purge was removed or replaced", ErrMutationConflict) |
| 478 | } |
| 479 | switch ClassifyPurge(*state, id) { |
| 480 | case PurgePreparedStale: |
| 481 | delete(state.PendingOperations, key) |
| 482 | stale = true |
| 483 | return nil |
| 484 | case PurgePrepared: |
| 485 | if observed == nil { |
| 486 | return ErrMutationConflict |
| 487 | } |
| 488 | status := state.SessionStates[id] |
| 489 | if status.Generation > expected { |
| 490 | return fmt.Errorf("%w: purge generation %d exceeds request %d", ErrMutationConflict, status.Generation, expected) |
| 491 | } |
| 492 | setLifecycle(state, id, Deleted) |
| 493 | current.Phase = "tombstoned" |
| 494 | state.PendingOperations[key] = current |
| 495 | return nil |
| 496 | case PurgeTombstoned, PurgeContentRemoved, PurgeCommitted: |
| 497 | return nil |
| 498 | case PurgeInvalid: |
| 499 | return fmt.Errorf("%w: inconsistent purge state", ErrMutationConflict) |
| 500 | case PurgeAbsent: |
| 501 | if observed != nil { |
| 502 | return ErrMutationConflict |
| 503 | } |
| 504 | status, known := state.SessionStates[id] |
| 505 | if !known || status.Lifecycle != Archived || status.Generation > expected { |
| 506 | return ErrMutationConflict |
| 507 | } |
| 508 | op := Operation{ID: key, Kind: "purge", Phase: "tombstoned", Lifecycle: Deleted, SessionIDs: []string{id}, ExpectedGeneration: status.Generation} |
| 509 | if cleanupSources { |
| 510 | var err error |
| 511 | op.Request, err = purgeSourceCleanupRequest(*state, id) |
| 512 | if err != nil { |
| 513 | return err |
| 514 | } |
| 515 | } |
| 516 | state.PendingOperations[key] = op |
| 517 | setLifecycle(state, id, Deleted) |
| 518 | return nil |
| 519 | default: |
| 520 | return ErrMutationConflict |
| 521 | } |
| 522 | }) |
| 523 | if err != nil { |
| 524 | return err |
| 525 | } |
| 526 | if stale { |
| 527 | return fmt.Errorf("%w: stale purge preparation removed", ErrMutationConflict) |
| 528 | } |
| 529 | return nil |
| 530 | } |
| 531 | |
| 532 | func (s *Store) AdvancePurge(ctx context.Context, id, phase string) error { |
| 533 | return s.mutate(ctx, func(state *State) error { |
| 534 | key := "purge-" + id |
| 535 | op, ok := state.PendingOperations[key] |
| 536 | if !ok || op.Kind != "purge" { |
| 537 | return ErrMutationConflict |
| 538 | } |
| 539 | if ClassifyPurge(*state, id) == PurgeInvalid { |
| 540 | return ErrMutationConflict |
| 541 | } |
| 542 | if op.Phase == "committed" || op.Phase == phase || op.Phase == "content_removed" { |
| 543 | return nil |
| 544 | } |
| 545 | if phase != "content_removed" || op.Phase != "tombstoned" { |
| 546 | return ErrMutationConflict |
| 547 | } |
| 548 | op.Phase = phase |
| 549 | state.PendingOperations[key] = op |
| 550 | return nil |
| 551 | }) |
| 552 | } |
| 553 | |
| 554 | func (s *Store) CompletePurge(ctx context.Context, id string) error { |
| 555 | return s.mutate(ctx, func(state *State) error { |
| 556 | key := "purge-" + id |
| 557 | op := state.PendingOperations[key] |
| 558 | switch ClassifyPurge(*state, id) { |
| 559 | case PurgeCommitted: |
| 560 | return nil |
| 561 | case PurgeContentRemoved: |
| 562 | default: |
| 563 | return ErrMutationConflict |
| 564 | } |
| 565 | // Keep only the consumed topic identity in the existing purge receipt. |
| 566 | // Canonical sessions and runtime-adopted sources may have no import |
| 567 | // journal from which a future display reader could recover that identity. |
| 568 | if topicID := state.Presentation[id].TopicID; topicID != "" { |
| 569 | op.WorkspaceID, _ = sessionOwner(*state, id) |
| 570 | if op.Presentation == nil { |
| 571 | op.Presentation = &Presentation{TopicID: topicID} |
| 572 | } |
| 573 | } |
| 574 | for key, workspace := range state.Workspaces { |
| 575 | if slices.Contains(workspace.SessionIDs, id) { |
| 576 | op.WorkspaceID = workspace.ID |
| 577 | } |
| 578 | workspace.SessionIDs = remove(workspace.SessionIDs, id) |
| 579 | state.Workspaces[key] = workspace |
| 580 | } |
| 581 | // The content and presentation can go, but their topic ownership must |
| 582 | // survive: otherwise a residual metadata row looks like a new topic. |
| 583 | if topicID := state.Presentation[id].TopicID; topicID != "" { |
| 584 | if op.Presentation == nil { |
| 585 | op.Presentation = &Presentation{} |
| 586 | } |
| 587 | op.Presentation.TopicID = topicID |
| 588 | } |
| 589 | delete(state.Presentation, id) |
| 590 | op.Phase, op.ResultGeneration = "committed", state.Generation+1 |
| 591 | state.PendingOperations[key] = op |
| 592 | return nil |
| 593 | }) |
| 594 | } |
| 595 | |
| 596 | func (s *Store) UpdatePresentation(ctx context.Context, ids []string, title *string, pinned *bool) error { |
| 597 | return s.mutate(ctx, func(state *State) error { |
| 598 | for _, id := range ids { |
| 599 | if _, ok := sessionOwner(*state, id); !ok { |
| 600 | return ErrSessionNotFound |
| 601 | } |
| 602 | value, exists := state.Presentation[id] |
| 603 | if !exists { |
| 604 | value.SortOrder = -1 |
| 605 | } |
| 606 | if title != nil { |
| 607 | value.Title = *title |
| 608 | } |
| 609 | if pinned != nil { |
| 610 | value.Pinned = *pinned |
| 611 | } |
| 612 | state.Presentation[id] = value |
| 613 | } |
| 614 | return nil |
| 615 | }) |
| 616 | } |
| 617 | |
| 618 | // EnsureSessionTopic publishes the initial display group without letting |
| 619 | // later tab rebuilds overwrite a user's persisted presentation. |
| 620 | func (s *Store) EnsureSessionTopic(ctx context.Context, id, topicID, title string) error { |
| 621 | if id == "" || topicID == "" { |
| 622 | return nil |
| 623 | } |
| 624 | return s.mutate(ctx, func(state *State) error { |
| 625 | if _, ok := sessionOwner(*state, id); !ok { |
| 626 | return ErrSessionNotFound |
| 627 | } |
| 628 | value := state.Presentation[id] |
| 629 | if value.TopicID != "" { |
| 630 | return nil |
| 631 | } |
| 632 | value.TopicID = topicID |
| 633 | if value.Title == "" { |
| 634 | value.Title = title |
| 635 | } |
| 636 | state.Presentation[id] = value |
| 637 | return nil |
| 638 | }) |
| 639 | } |
| 640 | |
| 641 | func (s *Store) RecordRecovery(ctx context.Context, entry RecoveryEntry) error { |
| 642 | return s.mutate(ctx, func(state *State) error { |
| 643 | if _, restored := restoredRecoveryVersion(*state, entry.SourceKey, entry.Fingerprint); restored { |
| 644 | return nil |
| 645 | } |
| 646 | if old, ok := state.RecoveryEntries[entry.ID]; ok { |
| 647 | if old.Status == "restored" && old.Fingerprint == entry.Fingerprint { |
| 648 | return nil |
| 649 | } |
| 650 | if strings.Contains(old.Reason, "conflict") && !strings.Contains(entry.Reason, "conflict") { |
| 651 | entry.Reason = old.Reason |
| 652 | } |
| 653 | entry.extra = old.extra |
| 654 | } |
| 655 | if entry.Status == "" { |
| 656 | entry.Status = "pending" |
| 657 | } |
| 658 | state.RecoveryEntries[entry.ID] = entry |
| 659 | return nil |
| 660 | }) |
| 661 | } |
| 662 | |
| 663 | // ReconcileDiscoveredSession rechecks ownership under the writer lock. A scan |
| 664 | // snapshot can predate a concurrent create, import, archive, or restore. |
| 665 | // Discovery must never classify those published/reserved IDs as orphans. |
| 666 | func (s *Store) ReconcileDiscoveredSession(ctx context.Context, entry RecoveryEntry, workspace *Workspace) error { |
| 667 | return s.mutate(ctx, func(state *State) error { |
| 668 | id := entry.SessionID |
| 669 | if state.SessionStates[id].Lifecycle == Deleted { |
| 670 | return nil |
| 671 | } |
| 672 | if id == "" { |
| 673 | return errors.New("discovery requires a session id") |
| 674 | } |
| 675 | if _, ok := sessionOwner(*state, id); ok { |
| 676 | return nil |
| 677 | } |
| 678 | if _, ok := state.PendingCreates[id]; ok { |
| 679 | return nil |
| 680 | } |
| 681 | for _, op := range state.PendingOperations { |
| 682 | if op.Phase != "committed" && slices.Contains(op.SessionIDs, id) { |
| 683 | return nil |
| 684 | } |
| 685 | } |
| 686 | if lifecycle, ok := state.SessionStates[id]; ok && lifecycle.Lifecycle != Active { |
| 687 | workspace = nil |
| 688 | entry.Reason = "historical_state_unknown" |
| 689 | } |
| 690 | if workspace == nil { |
| 691 | if old, ok := state.RecoveryEntries[entry.ID]; ok { |
| 692 | if old.Status == "restored" { |
| 693 | return nil |
| 694 | } |
| 695 | entry.extra = old.extra |
| 696 | } |
| 697 | state.RecoveryEntries[entry.ID] = entry |
| 698 | return nil |
| 699 | } |
| 700 | // A discovery snapshot can predate another process registering this |
| 701 | // directory. Resolve its owner under the writer lock, just like session |
| 702 | // ownership above, and preserve the owner's title and visibility. |
| 703 | workspaceID, found, err := ResolveWorkspaceID(*state, workspace.Root) |
| 704 | if err != nil { |
| 705 | return err |
| 706 | } |
| 707 | if !found { |
| 708 | workspaceID = workspace.ID |
| 709 | if existing, exists := state.Workspaces[workspaceID]; exists && existing.Root != workspace.Root { |
| 710 | if workspaceID != GlobalWorkspaceID || strings.TrimSpace(workspace.Root) == "" { |
| 711 | return ErrMutationConflict |
| 712 | } |
| 713 | rebindGlobalRoot(state, workspace.Root, time.Now().UTC()) |
| 714 | } |
| 715 | } |
| 716 | value, ok := state.Workspaces[workspaceID] |
| 717 | if !ok { |
| 718 | value = *workspace |
| 719 | state.WorkspaceIDs = append(state.WorkspaceIDs, value.ID) |
| 720 | } |
| 721 | value.SessionIDs = append(value.SessionIDs, id) |
| 722 | value.UpdatedAt = time.Now().UTC() |
| 723 | state.Workspaces[value.ID] = value |
| 724 | return nil |
| 725 | }) |
| 726 | } |
| 727 | |
| 728 | // backupV1 runs under the same cross-process lock as the schema publication. |
| 729 | // Content-addressed backups are immutable: a repeat never overwrites evidence. |
| 730 | func backupV1(path string) error { |
| 731 | body, err := os.ReadFile(path) |
| 732 | if os.IsNotExist(err) { |
| 733 | return nil |
| 734 | } |
| 735 | if err != nil { |
| 736 | return err |
| 737 | } |
| 738 | var header struct { |
| 739 | Version int `json:"version"` |
| 740 | } |
| 741 | if err := json.Unmarshal(body, &header); err != nil { |
| 742 | return err |
| 743 | } |
| 744 | if header.Version != 1 { |
| 745 | return nil |
| 746 | } |
| 747 | digest := sha256.Sum256(body) |
| 748 | backup := filepath.Join(filepath.Dir(path), "upgrade-backups", "workspace-v1-"+hex.EncodeToString(digest[:])+".json") |
| 749 | if old, err := os.ReadFile(backup); err == nil { |
| 750 | if sha256.Sum256(old) != digest { |
| 751 | return errors.New("workspace upgrade backup is corrupt") |
| 752 | } |
| 753 | return nil |
| 754 | } else if !os.IsNotExist(err) { |
| 755 | return err |
| 756 | } |
| 757 | if err := os.MkdirAll(filepath.Dir(backup), 0700); err != nil { |
| 758 | return err |
| 759 | } |
| 760 | return fileutil.AtomicWriteFileStrict(backup, body, 0600) |
| 761 | } |
| 762 | |
| 763 | // unknownFields retains future, user-owned metadata during read/modify/write. |
| 764 | func unknownFields(body []byte, names ...string) (map[string]json.RawMessage, error) { |
| 765 | var fields map[string]json.RawMessage |
| 766 | if err := json.Unmarshal(body, &fields); err != nil { |
| 767 | return nil, err |
| 768 | } |
| 769 | for _, name := range names { |
| 770 | delete(fields, name) |
| 771 | } |
| 772 | return fields, nil |
| 773 | } |
| 774 | |
| 775 | func commitSourceMapping(state *State, mapping *SourceMapping) error { |
| 776 | if mapping != nil { |
| 777 | mapping := *mapping |
| 778 | if old, exists := state.SourceMappings[mapping.SourceKey]; exists && (old.SessionID != mapping.SessionID || old.Fingerprint != mapping.Fingerprint) { |
| 779 | return ErrMutationConflict |
| 780 | } |
| 781 | state.SourceMappings[mapping.SourceKey] = mapping |
| 782 | adoptOrganizationSource(state, mapping) |
| 783 | } |
| 784 | return nil |
| 785 | } |
| 786 |