refactor(storev2): update snapshot manager and migration manager tests

store/v2/migration/manager_test.go

@@ -79,6 +79,11 @@ func TestMigrateState(t *testing.T) {
 			err := m.Migrate(toVersion - 1)
 			require.NoError(t, err)
 
+			// expecting error for conflicting process, since Migrate trigger snapshotter create migration,
+			// which start a snapshot process already.
+			_, err = m.snapshotsManager.Create(toVersion - 1)
+			require.Error(t, err)
+
 			if m.stateCommitment != nil {
 				// check the migrated state
 				for version := uint64(1); version < toVersion; version++ {

store/v2/snapshots/manager_test.go

@@ -254,3 +254,143 @@ func TestManager_TakeError(t *testing.T) {
 	_, err = manager.Create(1)
 	require.Error(t, err)
 }
+
+func TestSnapshot_Take_Restore(t *testing.T) {
+	store := setupStore(t)
+	items := [][]byte{
+		{1, 2, 3},
+		{4, 5, 6},
+		{7, 8, 9},
+	}
+	commitSnapshotter := &mockCommitSnapshotter{
+		items: items,
+	}
+	extSnapshotter := newExtSnapshotter(10)
+
+	expectChunks := snapshotItems(items, extSnapshotter)
+	manager := snapshots.NewManager(store, opts, commitSnapshotter, &mockStorageSnapshotter{}, nil, log.NewNopLogger())
+	err := manager.RegisterExtensions(extSnapshotter)
+	require.NoError(t, err)
+
+	// creating a snapshot at a higher height should be fine, and should return it
+	snapshot, err := manager.Create(5)
+	require.NoError(t, err)
+
+	assert.Equal(t, &types.Snapshot{
+		Height: 5,
+		Format: commitSnapshotter.SnapshotFormat(),
+		Chunks: 1,
+		Hash:   []uint8{0xc5, 0xf7, 0xfe, 0xea, 0xd3, 0x4d, 0x3e, 0x87, 0xff, 0x41, 0xa2, 0x27, 0xfa, 0xcb, 0x38, 0x17, 0xa, 0x5, 0xeb, 0x27, 0x4e, 0x16, 0x5e, 0xf3, 0xb2, 0x8b, 0x47, 0xd1, 0xe6, 0x94, 0x7e, 0x8b},
+		Metadata: types.Metadata{
+			ChunkHashes: checksums(expectChunks),
+		},
+	}, snapshot)
+
+	storeSnapshot, chunks, err := store.Load(snapshot.Height, snapshot.Format)
+	require.NoError(t, err)
+	assert.Equal(t, snapshot, storeSnapshot)
+	assert.Equal(t, expectChunks, readChunks(chunks))
+
+	err = manager.Restore(*snapshot)
+	require.NoError(t, err)
+
+	// Feeding the chunks should work
+	for i, chunk := range readChunks(chunks) {
+		done, err := manager.RestoreChunk(chunk)
+		require.NoError(t, err)
+		if i == len(chunks)-1 {
+			assert.True(t, done)
+		} else {
+			assert.False(t, done)
+		}
+	}
+
+	// The snapshot is saved in local snapshot store
+	snapshots, err := store.List()
+	require.NoError(t, err)
+	require.Equal(t, uint64(5), snapshots[0].Height)
+	require.Equal(t, types.CurrentFormat, snapshots[0].Format)
+
+	// Starting a new restore should fail now, because the target already has contents.
+	err = manager.Restore(*snapshot)
+	require.Error(t, err)
+}
+
+func TestSnapshot_Take_Prune(t *testing.T) {
+	store := setupStore(t)
+
+	// Prune should error while a snapshot is being taken
+	manager := setupBusyManager(t)
+	_, err := manager.Prune(2)
+	require.Error(t, err)
+
+	items := [][]byte{
+		{1, 2, 3},
+		{4, 5, 6},
+		{7, 8, 9},
+	}
+	commitSnapshotter := &mockCommitSnapshotter{
+		items: items,
+	}
+	extSnapshotter := newExtSnapshotter(10)
+
+	expectChunks := snapshotItems(items, extSnapshotter)
+	manager = snapshots.NewManager(store, opts, commitSnapshotter, &mockStorageSnapshotter{}, nil, log.NewNopLogger())
+	err = manager.RegisterExtensions(extSnapshotter)
+	require.NoError(t, err)
+
+	// creating a snapshot at height 4
+	snapshot, err := manager.Create(4)
+	require.NoError(t, err)
+
+	assert.Equal(t, &types.Snapshot{
+		Height: 4,
+		Format: commitSnapshotter.SnapshotFormat(),
+		Chunks: 1,
+		Hash:   []uint8{0xc5, 0xf7, 0xfe, 0xea, 0xd3, 0x4d, 0x3e, 0x87, 0xff, 0x41, 0xa2, 0x27, 0xfa, 0xcb, 0x38, 0x17, 0xa, 0x5, 0xeb, 0x27, 0x4e, 0x16, 0x5e, 0xf3, 0xb2, 0x8b, 0x47, 0xd1, 0xe6, 0x94, 0x7e, 0x8b},
+		Metadata: types.Metadata{
+			ChunkHashes: checksums(expectChunks),
+		},
+	}, snapshot)
+
+	pruned, err := manager.Prune(1)
+	require.NoError(t, err)
+	assert.EqualValues(t, 4, pruned)
+
+	// creating a snapshot at a same height 4, should be error
+	// since we prune all the previous snapshot except the latest at height 4
+	_, err = manager.Create(4)
+	require.Error(t, err)
+
+	// prune all
+	pruned, err = manager.Prune(0)
+	require.NoError(t, err)
+	assert.EqualValues(t, 1, pruned)
+
+	// creating a snapshot at a same height 4, should be true since we prune all the previous snapshot
+	snapshot, err = manager.Create(4)
+	require.NoError(t, err)
+
+	assert.Equal(t, &types.Snapshot{
+		Height: 4,
+		Format: commitSnapshotter.SnapshotFormat(),
+		Chunks: 1,
+		Hash:   []uint8{0xc5, 0xf7, 0xfe, 0xea, 0xd3, 0x4d, 0x3e, 0x87, 0xff, 0x41, 0xa2, 0x27, 0xfa, 0xcb, 0x38, 0x17, 0xa, 0x5, 0xeb, 0x27, 0x4e, 0x16, 0x5e, 0xf3, 0xb2, 0x8b, 0x47, 0xd1, 0xe6, 0x94, 0x7e, 0x8b},
+		Metadata: types.Metadata{
+			ChunkHashes: checksums(expectChunks),
+		},
+	}, snapshot)
+
+	storeSnapshot, chunks, err := store.Load(snapshot.Height, snapshot.Format)
+	require.NoError(t, err)
+	assert.Equal(t, snapshot, storeSnapshot)
+	assert.Equal(t, expectChunks, readChunks(chunks))
+
+	pruned, err = manager.Prune(2)
+	require.NoError(t, err)
+	assert.EqualValues(t, 0, pruned)
+
+	list, err := manager.List()
+	require.NoError(t, err)
+	assert.Len(t, list, 1)
+}