package engine import ( "context" "errors" "fmt" "os" "path/filepath" "strconv" "testing" objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil" meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger" cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test" objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "github.com/stretchr/testify/require" "go.uber.org/zap/zaptest" ) func newEngineEvacuate(t *testing.T, shardNum int, objPerShard int) (*StorageEngine, []*shard.ID, []*objectSDK.Object) { dir, err := os.MkdirTemp("", "*") require.NoError(t, err) t.Cleanup(func() { _ = os.RemoveAll(dir) }) e := New( WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}), WithShardPoolSize(1)) ids := make([]*shard.ID, shardNum) for i := range ids { ids[i], err = e.AddShard( shard.WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}), shard.WithBlobStorOptions( blobstor.WithStorages([]blobstor.SubStorage{{ Storage: fstree.New( fstree.WithPath(filepath.Join(dir, strconv.Itoa(i))), fstree.WithDepth(1)), }})), shard.WithMetaBaseOptions( meta.WithPath(filepath.Join(dir, fmt.Sprintf("%d.metabase", i))), meta.WithPermissions(0700), meta.WithEpochState(epochState{}), )) require.NoError(t, err) } require.NoError(t, e.Open()) require.NoError(t, e.Init(context.Background())) objects := make([]*objectSDK.Object, 0, objPerShard*len(ids)) for _, sh := range ids { obj := testutil.GenerateObjectWithCID(cidtest.ID()) objects = append(objects, obj) var putPrm shard.PutPrm putPrm.SetObject(obj) _, err := e.shards[sh.String()].Put(putPrm) require.NoError(t, err) } for i := 0; ; i++ { objects = append(objects, testutil.GenerateObjectWithCID(cidtest.ID())) var putPrm PutPrm putPrm.WithObject(objects[len(objects)-1]) _, err := e.Put(putPrm) require.NoError(t, err) res, err := e.shards[ids[len(ids)-1].String()].List() require.NoError(t, err) if len(res.AddressList()) == objPerShard { break } } return e, ids, objects } func TestEvacuateShard(t *testing.T) { const objPerShard = 3 e, ids, objects := newEngineEvacuate(t, 3, objPerShard) evacuateShardID := ids[2].String() checkHasObjects := func(t *testing.T) { for i := range objects { var prm GetPrm prm.WithAddress(objectCore.AddressOf(objects[i])) _, err := e.Get(prm) require.NoError(t, err) } } checkHasObjects(t) var prm EvacuateShardPrm prm.WithShardIDList(ids[2:3]) t.Run("must be read-only", func(t *testing.T) { res, err := e.Evacuate(prm) require.ErrorIs(t, err, shard.ErrMustBeReadOnly) require.Equal(t, 0, res.Count()) }) require.NoError(t, e.shards[evacuateShardID].SetMode(mode.ReadOnly)) res, err := e.Evacuate(prm) require.NoError(t, err) require.Equal(t, objPerShard, res.count) // We check that all objects are available both before and after shard removal. // First case is a real-world use-case. It ensures that an object can be put in presense // of all metabase checks/marks. // Second case ensures that all objects are indeed moved and available. checkHasObjects(t) // Calling it again is OK, but all objects are already moved, so no new PUTs should be done. res, err = e.Evacuate(prm) require.NoError(t, err) require.Equal(t, 0, res.count) checkHasObjects(t) e.mtx.Lock() delete(e.shards, evacuateShardID) delete(e.shardPools, evacuateShardID) e.mtx.Unlock() checkHasObjects(t) } func TestEvacuateNetwork(t *testing.T) { var errReplication = errors.New("handler error") acceptOneOf := func(objects []*objectSDK.Object, max int) func(oid.Address, *objectSDK.Object) error { var n int return func(addr oid.Address, obj *objectSDK.Object) error { if n == max { return errReplication } n++ for i := range objects { if addr == objectCore.AddressOf(objects[i]) { require.Equal(t, objects[i], obj) return nil } } require.FailNow(t, "handler was called with an unexpected object: %s", addr) panic("unreachable") } } t.Run("single shard", func(t *testing.T) { e, ids, objects := newEngineEvacuate(t, 1, 3) evacuateShardID := ids[0].String() require.NoError(t, e.shards[evacuateShardID].SetMode(mode.ReadOnly)) var prm EvacuateShardPrm prm.shardID = ids[0:1] res, err := e.Evacuate(prm) require.ErrorIs(t, err, errMustHaveTwoShards) require.Equal(t, 0, res.Count()) prm.handler = acceptOneOf(objects, 2) res, err = e.Evacuate(prm) require.ErrorIs(t, err, errReplication) require.Equal(t, 2, res.Count()) }) t.Run("multiple shards, evacuate one", func(t *testing.T) { e, ids, objects := newEngineEvacuate(t, 2, 3) require.NoError(t, e.shards[ids[0].String()].SetMode(mode.ReadOnly)) require.NoError(t, e.shards[ids[1].String()].SetMode(mode.ReadOnly)) var prm EvacuateShardPrm prm.shardID = ids[1:2] prm.handler = acceptOneOf(objects, 2) res, err := e.Evacuate(prm) require.ErrorIs(t, err, errReplication) require.Equal(t, 2, res.Count()) t.Run("no errors", func(t *testing.T) { prm.handler = acceptOneOf(objects, 3) res, err := e.Evacuate(prm) require.NoError(t, err) require.Equal(t, 3, res.Count()) }) }) t.Run("multiple shards, evacuate many", func(t *testing.T) { e, ids, objects := newEngineEvacuate(t, 4, 5) evacuateIDs := ids[0:3] var totalCount int for i := range evacuateIDs { res, err := e.shards[ids[i].String()].List() require.NoError(t, err) totalCount += len(res.AddressList()) } for i := range ids { require.NoError(t, e.shards[ids[i].String()].SetMode(mode.ReadOnly)) } var prm EvacuateShardPrm prm.shardID = evacuateIDs prm.handler = acceptOneOf(objects, totalCount-1) res, err := e.Evacuate(prm) require.ErrorIs(t, err, errReplication) require.Equal(t, totalCount-1, res.Count()) t.Run("no errors", func(t *testing.T) { prm.handler = acceptOneOf(objects, totalCount) res, err := e.Evacuate(prm) require.NoError(t, err) require.Equal(t, totalCount, res.Count()) }) }) }