(t *testing.T)
| 39 | } |
| 40 | |
| 41 | func TestCalculateSnapshot(t *testing.T) { |
| 42 | dir := t.TempDir() |
| 43 | ds := raftwal.Init(dir) |
| 44 | defer ds.Close() |
| 45 | |
| 46 | n := newNode(ds, 1, 1, "") |
| 47 | var entries []raftpb.Entry |
| 48 | // Txn: 1 -> 5 // 5 should be the ReadTs. |
| 49 | // Txn: 2 // Should correspond to the index. Subtract 1 from the index. |
| 50 | // Txn: 3 -> 4 |
| 51 | entries = append(entries, getEntryForMutation(1, 1), getEntryForMutation(2, 3), |
| 52 | getEntryForMutation(3, 2), getEntryForCommit(4, 3, 4), getEntryForCommit(5, 1, 5)) |
| 53 | require.NoError(t, n.Store.Save(&raftpb.HardState{}, entries, &raftpb.Snapshot{})) |
| 54 | n.Applied.SetDoneUntil(5) |
| 55 | posting.Oracle().RegisterStartTs(2) |
| 56 | snap, err := n.calculateSnapshot(0, n.Applied.DoneUntil(), posting.Oracle().MinPendingStartTs()) |
| 57 | require.NoError(t, err) |
| 58 | require.Equal(t, uint64(5), snap.ReadTs) |
| 59 | require.Equal(t, uint64(1), snap.Index) |
| 60 | |
| 61 | // Check state of Raft store. |
| 62 | var cs raftpb.ConfState |
| 63 | require.NoError(t, n.Store.CreateSnapshot(snap.Index, &cs, nil)) |
| 64 | |
| 65 | first, err := n.Store.FirstIndex() |
| 66 | require.NoError(t, err) |
| 67 | require.Equal(t, uint64(2), first) |
| 68 | |
| 69 | last, err := n.Store.LastIndex() |
| 70 | require.NoError(t, err) |
| 71 | require.Equal(t, uint64(5), last) |
| 72 | |
| 73 | // This time commit all txns. |
| 74 | // Txn: 7 -> 8 |
| 75 | // Txn: 2 -> 9 |
| 76 | entries = entries[:0] |
| 77 | entries = append(entries, getEntryForMutation(6, 7), getEntryForCommit(7, 7, 8), |
| 78 | getEntryForCommit(8, 2, 9)) |
| 79 | require.NoError(t, n.Store.Save(&raftpb.HardState{}, entries, &raftpb.Snapshot{})) |
| 80 | n.Applied.SetDoneUntil(8) |
| 81 | posting.Oracle().ResetTxns() |
| 82 | snap, err = n.calculateSnapshot(0, n.Applied.DoneUntil(), posting.Oracle().MinPendingStartTs()) |
| 83 | require.NoError(t, err) |
| 84 | require.Equal(t, uint64(9), snap.ReadTs) |
| 85 | require.Equal(t, uint64(8), snap.Index) |
| 86 | |
| 87 | // Check state of Raft store. |
| 88 | require.NoError(t, n.Store.CreateSnapshot(snap.Index, &cs, nil)) |
| 89 | first, err = n.Store.FirstIndex() |
| 90 | require.NoError(t, err) |
| 91 | require.Equal(t, uint64(9), first) |
| 92 | |
| 93 | entries = entries[:0] |
| 94 | entries = append(entries, getEntryForMutation(9, 11)) |
| 95 | require.NoError(t, n.Store.Save(&raftpb.HardState{}, entries, &raftpb.Snapshot{})) |
| 96 | n.Applied.SetDoneUntil(9) |
| 97 | snap, err = n.calculateSnapshot(0, n.Applied.DoneUntil(), posting.Oracle().MinPendingStartTs()) |
| 98 | require.NoError(t, err) |
nothing calls this directly
no test coverage detected