| 1 | package session |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "os" |
| 8 | "path/filepath" |
| 9 | "testing" |
| 10 | |
| 11 | "reasonix/internal/projectiondb" |
| 12 | ) |
| 13 | |
| 14 | func historyBoundaryFixture(t *testing.T) (*Service, *Runtime, string, string) { |
| 15 | t.Helper() |
| 16 | root := t.TempDir() |
| 17 | s, err := NewService("local", NewFilesystemPersistence(root)) |
| 18 | if err != nil { |
| 19 | t.Fatal(err) |
| 20 | } |
| 21 | t.Cleanup(func() { _ = s.CloseAll(context.Background()) }) |
| 22 | r, err := s.Create(t.Context(), CreateOptions{SessionID: "boundary"}) |
| 23 | if err != nil { |
| 24 | t.Fatal(err) |
| 25 | } |
| 26 | appendRecoveryTestMessage(t, r.Session(), "first", "first") |
| 27 | if _, err := r.Session().Flush(t.Context()); err != nil { |
| 28 | t.Fatal(err) |
| 29 | } |
| 30 | return s, r, filepath.Join(root, r.Ref().SessionID), historyIndexPath(root, r.Ref().SessionID) |
| 31 | } |
| 32 | |
| 33 | func TestHistoryRebuildProgressMatchesScannedTransactions(t *testing.T) { |
| 34 | s, r, dir, path := historyBoundaryFixture(t) |
| 35 | // Force the startup ordering: stat, append, then scan. No timing dependency. |
| 36 | before, err := revisionOfLog(dir) |
| 37 | if err != nil { |
| 38 | t.Fatal(err) |
| 39 | } |
| 40 | appendRecoveryTestMessage(t, r.Session(), "second", "second") |
| 41 | if _, err := r.Session().Flush(t.Context()); err != nil { |
| 42 | t.Fatal(err) |
| 43 | } |
| 44 | if err := rebuildHistoryIndex(t.Context(), dir, path, r.Ref().SessionID, before); err != nil { |
| 45 | t.Fatal(err) |
| 46 | } |
| 47 | page := historyPageReady(t, s.Query(), r.Ref(), "", 100) |
| 48 | if len(page.Messages) != 2 { |
| 49 | t.Fatalf("messages = %d, want 2", len(page.Messages)) |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | func TestHistoryRepairsPersistedMismatchedProgress(t *testing.T) { |
| 54 | s, r, dir, path := historyBoundaryFixture(t) |
| 55 | before, err := revisionOfLog(dir) |
| 56 | if err != nil { |
| 57 | t.Fatal(err) |
| 58 | } |
| 59 | appendRecoveryTestMessage(t, r.Session(), "second", "second") |
| 60 | if _, err := r.Session().Flush(t.Context()); err != nil { |
| 61 | t.Fatal(err) |
| 62 | } |
| 63 | _ = historyPageReady(t, s.Query(), r.Ref(), "", 100) |
| 64 | // Reproduce the shipped index: new sequence, old byte offset. |
| 65 | h, err := projectiondb.Open(t.Context(), projectiondb.OpenOptions{Path: path, Migrations: historyMigrations, RequireDisk: true}) |
| 66 | if err != nil { |
| 67 | t.Fatal(err) |
| 68 | } |
| 69 | _, err = h.DB.ExecContext(t.Context(), "UPDATE metadata SET value=? WHERE key='log_size'", fmt.Sprint(before.Size)) |
| 70 | _ = h.DB.Close() |
| 71 | if err != nil { |
| 72 | t.Fatal(err) |
| 73 | } |
| 74 | // A new Query proves recovery survives process-local state loss. |
| 75 | restarted, err := NewService("local", s.persistence) |
| 76 | if err != nil { |
| 77 | t.Fatal(err) |
| 78 | } |
| 79 | t.Cleanup(func() { _ = restarted.CloseAll(context.Background()) }) |
| 80 | page, err := waitHistoryWindow(t, restarted.Query(), r.Ref(), HistoryWindowRequest{Anchor: "newest", Limit: 32}) |
| 81 | if err != nil || len(page.Messages) != 2 { |
| 82 | t.Fatalf("recovered window: status=%s messages=%d err=%v", page.Status, len(page.Messages), err) |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | func TestHistoryRebuildDoesNotPublishIncompleteTail(t *testing.T) { |
| 87 | s, r, dir, path := historyBoundaryFixture(t) |
| 88 | before, err := os.ReadFile(filepath.Join(dir, "events.frames")) |
| 89 | if err != nil { |
| 90 | t.Fatal(err) |
| 91 | } |
| 92 | appendRecoveryTestMessage(t, r.Session(), "second", "second") |
| 93 | if _, err := r.Session().Flush(t.Context()); err != nil { |
| 94 | t.Fatal(err) |
| 95 | } |
| 96 | logPath := filepath.Join(dir, "events.frames") |
| 97 | complete, err := os.ReadFile(logPath) |
| 98 | if err != nil { |
| 99 | t.Fatal(err) |
| 100 | } |
| 101 | if err := os.WriteFile(logPath, complete[:len(complete)-1], 0o600); err != nil { |
| 102 | t.Fatal(err) |
| 103 | } |
| 104 | revision, err := revisionOfLog(dir) |
| 105 | if err != nil { |
| 106 | t.Fatal(err) |
| 107 | } |
| 108 | if err := rebuildHistoryIndex(t.Context(), dir, path, r.Ref().SessionID, revision); err != nil { |
| 109 | t.Fatal(err) |
| 110 | } |
| 111 | h, err := projectiondb.Open(t.Context(), projectiondb.OpenOptions{Path: path, Migrations: historyMigrations, RequireDisk: true}) |
| 112 | if err != nil { |
| 113 | t.Fatal(err) |
| 114 | } |
| 115 | metadata, err := readHistoryIndexMetadata(t.Context(), h.DB) |
| 116 | _ = h.DB.Close() |
| 117 | if err != nil { |
| 118 | t.Fatal(err) |
| 119 | } |
| 120 | if metadata.logSize != int64(len(before)) { |
| 121 | t.Fatalf("published offset=%d, last complete transaction ends at %d", metadata.logSize, len(before)) |
| 122 | } |
| 123 | if err := os.WriteFile(logPath, complete, 0o600); err != nil { |
| 124 | t.Fatal(err) |
| 125 | } |
| 126 | page := historyPageReady(t, s.Query(), r.Ref(), "", 100) |
| 127 | if len(page.Messages) != 2 { |
| 128 | t.Fatalf("completed tail messages=%d", len(page.Messages)) |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | func TestHistoryRepairDoesNotHideDamagedLog(t *testing.T) { |
| 133 | s, r, dir, _ := historyBoundaryFixture(t) |
| 134 | _ = historyPageReady(t, s.Query(), r.Ref(), "", 100) |
| 135 | log, err := os.OpenFile(filepath.Join(dir, "events.frames"), os.O_WRONLY|os.O_APPEND, 0o600) |
| 136 | if err != nil { |
| 137 | t.Fatal(err) |
| 138 | } |
| 139 | _, err = log.Write([]byte("invalid frame header")) |
| 140 | _ = log.Close() |
| 141 | if err != nil { |
| 142 | t.Fatal(err) |
| 143 | } |
| 144 | _, err = waitHistoryWindow(t, s.Query(), r.Ref(), HistoryWindowRequest{Anchor: "newest"}) |
| 145 | if !errors.Is(err, ErrDamagedStore) { |
| 146 | t.Fatalf("corruption error=%v", err) |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | func TestHistoryScanStopsAtCapturedSnapshot(t *testing.T) { |
| 151 | _, r, dir, _ := historyBoundaryFixture(t) |
| 152 | log, err := os.Open(filepath.Join(dir, "events.frames")) |
| 153 | if err != nil { |
| 154 | t.Fatal(err) |
| 155 | } |
| 156 | defer log.Close() |
| 157 | before, err := log.Stat() |
| 158 | if err != nil { |
| 159 | t.Fatal(err) |
| 160 | } |
| 161 | visited := 0 |
| 162 | progress, err := scanHistoryLog(t.Context(), log, 0, 1, before.Size(), contentStoreForSessionDir(dir), func(commit Commit) bool { |
| 163 | visited++ |
| 164 | appendRecoveryTestMessage(t, r.Session(), "during-scan", "during scan") |
| 165 | if _, err := r.Session().Flush(t.Context()); err != nil { |
| 166 | t.Fatal(err) |
| 167 | } |
| 168 | return true |
| 169 | }) |
| 170 | if err != nil { |
| 171 | t.Fatal(err) |
| 172 | } |
| 173 | if visited != 1 || progress.end != before.Size() || progress.sequence != 1 { |
| 174 | t.Fatalf("scan followed concurrent append: visited=%d progress=%+v", visited, progress) |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | func TestHistoryScanRejectsReplacedFile(t *testing.T) { |
| 179 | _, _, dir, _ := historyBoundaryFixture(t) |
| 180 | path := filepath.Join(dir, "events.frames") |
| 181 | generation, err := historyProjectionGeneration(dir, 0) |
| 182 | if err != nil { |
| 183 | t.Fatal(err) |
| 184 | } |
| 185 | data, err := os.ReadFile(path) |
| 186 | if err != nil { |
| 187 | t.Fatal(err) |
| 188 | } |
| 189 | // Model the reader retained after a replacement: identical bytes, but a |
| 190 | // different file identity from the manifest's current log. Windows prevents |
| 191 | // renaming over an open file, so construct that state without a live rename. |
| 192 | previousPath := filepath.Join(t.TempDir(), "previous.frames") |
| 193 | if err := os.WriteFile(previousPath, data, 0o600); err != nil { |
| 194 | t.Fatal(err) |
| 195 | } |
| 196 | log, err := os.Open(previousPath) |
| 197 | if err != nil { |
| 198 | t.Fatal(err) |
| 199 | } |
| 200 | defer log.Close() |
| 201 | if err := validateHistoryLog(t.Context(), dir, log, generation); !errors.Is(err, ErrStaleGeneration) { |
| 202 | t.Fatalf("replacement accepted: %v", err) |
| 203 | } |
| 204 | } |
| 205 |