diff --git a/basic_test.go b/basic_test.go index 1e6a92ff0..892f13d0d 100644 --- a/basic_test.go +++ b/basic_test.go @@ -35,72 +35,127 @@ func TestBasic(t *testing.T) { // Test 0x00 { - idx, val := tree.Get([]byte{0x00}) + key := []byte{0x00} + expected := "" + + idx, val := tree.GetWithIndex(key) if val != nil { t.Errorf("Expected no value to exist") } if idx != 0 { t.Errorf("Unexpected idx %x", idx) } - if string(val) != "" { + if string(val) != expected { t.Errorf("Unexpected value %v", string(val)) } + + val = tree.Get(key) + if val != nil { + t.Errorf("Fast method - expected no value to exist") + } + if string(val) != expected { + t.Errorf("Fast method - Unexpected value %v", string(val)) + } } // Test "1" { - idx, val := tree.Get([]byte("1")) + key := []byte("1") + expected := "one" + + idx, val := tree.GetWithIndex(key) if val == nil { t.Errorf("Expected value to exist") } if idx != 0 { t.Errorf("Unexpected idx %x", idx) } - if string(val) != "one" { + if string(val) != expected { t.Errorf("Unexpected value %v", string(val)) } + + val = tree.Get(key) + if val == nil { + t.Errorf("Fast method - expected value to exist") + } + if string(val) != expected { + t.Errorf("Fast method - Unexpected value %v", string(val)) + } } // Test "2" { - idx, val := tree.Get([]byte("2")) + key := []byte("2") + expected := "TWO" + + idx, val := tree.GetWithIndex(key) if val == nil { t.Errorf("Expected value to exist") } if idx != 1 { t.Errorf("Unexpected idx %x", idx) } - if string(val) != "TWO" { + if string(val) != expected { t.Errorf("Unexpected value %v", string(val)) } + + val = tree.Get(key) + if val == nil { + t.Errorf("Fast method - expected value to exist") + } + if string(val) != expected { + t.Errorf("Fast method - Unexpected value %v", string(val)) + } } // Test "4" { - idx, val := tree.Get([]byte("4")) + key := []byte("4") + expected := "" + + idx, val := tree.GetWithIndex(key) if val != nil { t.Errorf("Expected no value to exist") } if idx != 2 { t.Errorf("Unexpected idx %x", idx) } - if string(val) != "" { + if string(val) != expected { t.Errorf("Unexpected value %v", string(val)) } + + val = tree.Get(key) + if val != nil { + t.Errorf("Fast method - expected no value to exist") + } + if string(val) != expected { + t.Errorf("Fast method - Unexpected value %v", string(val)) + } } // Test "6" { - idx, val := tree.Get([]byte("6")) + key := []byte("6") + expected := "" + + idx, val := tree.GetWithIndex(key) if val != nil { t.Errorf("Expected no value to exist") } if idx != 3 { t.Errorf("Unexpected idx %x", idx) } - if string(val) != "" { + if string(val) != expected { t.Errorf("Unexpected value %v", string(val)) } + + val = tree.Get(key) + if val != nil { + t.Errorf("Fast method - expected no value to exist") + } + if string(val) != expected { + t.Errorf("Fast method - Unexpected value %v", string(val)) + } } } @@ -252,7 +307,7 @@ func TestIntegration(t *testing.T) { if has := tree.Has([]byte(randstr(12))); has { t.Error("Table has extra key") } - if _, val := tree.Get([]byte(r.key)); string(val) != r.value { + if val := tree.Get([]byte(r.key)); string(val) != r.value { t.Error("wrong value") } } @@ -270,7 +325,7 @@ func TestIntegration(t *testing.T) { if has := tree.Has([]byte(randstr(12))); has { t.Error("Table has extra key") } - _, val := tree.Get([]byte(r.key)) + val := tree.Get([]byte(r.key)) if string(val) != r.value { t.Error("wrong value") } @@ -388,7 +443,7 @@ func TestPersistence(t *testing.T) { require.NoError(t, err) t2.Load() for key, value := range records { - _, t2value := t2.Get([]byte(key)) + t2value := t2.Get([]byte(key)) if string(t2value) != value { t.Fatalf("Invalid value. Expected %v, got %v", value, t2value) } diff --git a/benchmarks/bench_test.go b/benchmarks/bench_test.go index 0391c8524..d8c142fe3 100644 --- a/benchmarks/bench_test.go +++ b/benchmarks/bench_test.go @@ -57,14 +57,18 @@ func commitTree(b *testing.B, t *iavl.MutableTree) { } } -func runQueries(b *testing.B, t *iavl.MutableTree, keyLen int) { +// queries random keys against live state. Keys are almost certainly not in the tree. +func runQueriesFast(b *testing.B, t *iavl.MutableTree, keyLen int) { + require.True(b, t.IsFastCacheEnabled()) for i := 0; i < b.N; i++ { q := randBytes(keyLen) t.Get(q) } } -func runKnownQueries(b *testing.B, t *iavl.MutableTree, keys [][]byte) { +// queries keys that are known to be in state +func runKnownQueriesFast(b *testing.B, t *iavl.MutableTree, keys [][]byte) { + require.True(b, t.IsFastCacheEnabled()) // to ensure fast storage is enabled l := int32(len(keys)) for i := 0; i < b.N; i++ { q := keys[rand.Int31n(l)] @@ -72,6 +76,74 @@ func runKnownQueries(b *testing.B, t *iavl.MutableTree, keys [][]byte) { } } +func runQueriesSlow(b *testing.B, t *iavl.MutableTree, keyLen int) { + b.StopTimer() + // Save version to get an old immutable tree to query against, + // Fast storage is not enabled on old tree versions, allowing us to bench the desired behavior. + _, version, err := t.SaveVersion() + require.NoError(b, err) + + itree, err := t.GetImmutable(version - 1) + require.NoError(b, err) + require.False(b, itree.IsFastCacheEnabled()) // to ensure fast storage is not enabled + + b.StartTimer() + for i := 0; i < b.N; i++ { + q := randBytes(keyLen) + itree.GetWithIndex(q) + } +} + +func runKnownQueriesSlow(b *testing.B, t *iavl.MutableTree, keys [][]byte) { + b.StopTimer() + // Save version to get an old immutable tree to query against, + // Fast storage is not enabled on old tree versions, allowing us to bench the desired behavior. + _, version, err := t.SaveVersion() + require.NoError(b, err) + + itree, err := t.GetImmutable(version - 1) + require.NoError(b, err) + require.False(b, itree.IsFastCacheEnabled()) // to ensure fast storage is not enabled + b.StartTimer() + l := int32(len(keys)) + for i := 0; i < b.N; i++ { + q := keys[rand.Int31n(l)] + itree.GetWithIndex(q) + } +} + +func runIterationFast(b *testing.B, t *iavl.MutableTree, expectedSize int) { + require.True(b, t.IsFastCacheEnabled()) // to ensure fast storage is enabled + for i := 0; i < b.N; i++ { + itr := t.ImmutableTree.Iterator(nil, nil, false) + iterate(b, itr, expectedSize) + itr.Close() + } +} + +func runIterationSlow(b *testing.B, t *iavl.MutableTree, expectedSize int) { + for i := 0; i < b.N; i++ { + itr := iavl.NewIterator(nil, nil, false, t.ImmutableTree) // create slow iterator directly + iterate(b, itr, expectedSize) + itr.Close() + } +} + +func iterate(b *testing.B, itr db.Iterator, expectedSize int) { + b.StartTimer() + keyValuePairs := make([][][]byte, 0, expectedSize) + for i := 0; i < expectedSize && itr.Valid(); i++ { + itr.Next() + keyValuePairs = append(keyValuePairs, [][]byte{itr.Key(), itr.Value()}) + } + b.StopTimer() + if len(keyValuePairs) != expectedSize { + b.Errorf("iteration count mismatch: %d != %d", len(keyValuePairs), expectedSize) + } else { + b.Logf("completed %d iterations", len(keyValuePairs)) + } +} + // func runInsert(b *testing.B, t *iavl.MutableTree, keyLen, dataLen, blockSize int) *iavl.MutableTree { // for i := 1; i <= b.N; i++ { // t.Set(randBytes(keyLen), randBytes(dataLen)) @@ -132,7 +204,7 @@ func runBlock(b *testing.B, t *iavl.MutableTree, keyLen, dataLen, blockSize int, data := randBytes(dataLen) // perform query and write on check and then real - // check.Get(key) + // check.GetFast(key) // check.Set(key, data) real.Get(key) real.Set(key, data) @@ -193,8 +265,8 @@ func BenchmarkSmall(b *testing.B) { func BenchmarkLarge(b *testing.B) { benchmarks := []benchmark{ - {"memdb", 1000000, 100, 16, 40}, - {"goleveldb", 1000000, 100, 16, 40}, + {"memdb", 1000000, 100, 4, 10}, + {"goleveldb", 1000000, 100, 4, 10}, // FIXME: this crashes on init! Either remove support, or make it work. // {"cleveldb", 100000, 100, 16, 40}, } @@ -276,14 +348,33 @@ func runSuite(b *testing.B, d db.DB, initSize, blockSize, keyLen, dataLen int) { b.ResetTimer() - b.Run("query-miss", func(sub *testing.B) { + b.Run("query-no-in-tree-guarantee-fast", func(sub *testing.B) { + sub.ReportAllocs() + runQueriesFast(sub, t, keyLen) + }) + b.Run("query-no-in-tree-guarantee-slow", func(sub *testing.B) { + sub.ReportAllocs() + runQueriesSlow(sub, t, keyLen) + }) + // + b.Run("query-hits-fast", func(sub *testing.B) { + sub.ReportAllocs() + runKnownQueriesFast(sub, t, keys) + }) + b.Run("query-hits-slow", func(sub *testing.B) { + sub.ReportAllocs() + runKnownQueriesSlow(sub, t, keys) + }) + // + b.Run("iteration-fast", func(sub *testing.B) { sub.ReportAllocs() - runQueries(sub, t, keyLen) + runIterationFast(sub, t, initSize) }) - b.Run("query-hits", func(sub *testing.B) { + b.Run("iteration-slow", func(sub *testing.B) { sub.ReportAllocs() - runKnownQueries(sub, t, keys) + runIterationSlow(sub, t, initSize) }) + // b.Run("update", func(sub *testing.B) { sub.ReportAllocs() t = runUpdate(sub, t, dataLen, blockSize, keys) diff --git a/export_test.go b/export_test.go index 2b27a7137..56d3ef818 100644 --- a/export_test.go +++ b/export_test.go @@ -52,8 +52,8 @@ func setupExportTreeRandom(t *testing.T) *ImmutableTree { keySize = 16 valueSize = 16 - versions = 32 // number of versions to generate - versionOps = 4096 // number of operations (create/update/delete) per version + versions = 8 // number of versions to generate + versionOps = 1024 // number of operations (create/update/delete) per version updateRatio = 0.4 // ratio of updates out of all operations deleteRatio = 0.2 // ratio of deletes out of all operations ) @@ -211,8 +211,8 @@ func TestExporter_Import(t *testing.T) { require.Equal(t, tree.Version(), newTree.Version(), "Tree version mismatch") tree.Iterate(func(key, value []byte) bool { - index, _ := tree.Get(key) - newIndex, newValue := newTree.Get(key) + index, _ := tree.GetWithIndex(key) + newIndex, newValue := newTree.GetWithIndex(key) require.Equal(t, index, newIndex, "Index mismatch for key %v", key) require.Equal(t, value, newValue, "Value mismatch for key %v", key) return false diff --git a/fast_iterator.go b/fast_iterator.go new file mode 100644 index 000000000..3891ff35b --- /dev/null +++ b/fast_iterator.go @@ -0,0 +1,137 @@ +package iavl + +import ( + "errors" + + dbm "github.com/tendermint/tm-db" +) + +var errFastIteratorNilNdbGiven = errors.New("fast iterator must be created with a nodedb but it was nil") + +// FastIterator is a dbm.Iterator for ImmutableTree +// it iterates over the latest state via fast nodes, +// taking advantage of keys being located in sequence in the underlying database. +type FastIterator struct { + start, end []byte + + valid bool + + ascending bool + + err error + + ndb *nodeDB + + nextFastNode *FastNode + + fastIterator dbm.Iterator +} + +var _ dbm.Iterator = &FastIterator{} + +func NewFastIterator(start, end []byte, ascending bool, ndb *nodeDB) *FastIterator { + iter := &FastIterator{ + start: start, + end: end, + err: nil, + ascending: ascending, + ndb: ndb, + nextFastNode: nil, + fastIterator: nil, + } + // Move iterator before the first element + iter.Next() + return iter +} + +// Domain implements dbm.Iterator. +// Maps the underlying nodedb iterator domain, to the 'logical' keys involved. +func (iter *FastIterator) Domain() ([]byte, []byte) { + if iter.fastIterator == nil { + return iter.start, iter.end + } + + start, end := iter.fastIterator.Domain() + + if start != nil { + start = start[1:] + if len(start) == 0 { + start = nil + } + } + + if end != nil { + end = end[1:] + if len(end) == 0 { + end = nil + } + } + + return start, end +} + +// Valid implements dbm.Iterator. +func (iter *FastIterator) Valid() bool { + if iter.fastIterator == nil || !iter.fastIterator.Valid() { + return false + } + + return iter.valid +} + +// Key implements dbm.Iterator +func (iter *FastIterator) Key() []byte { + if iter.valid { + return iter.nextFastNode.key + } + return nil +} + +// Value implements dbm.Iterator +func (iter *FastIterator) Value() []byte { + if iter.valid { + return iter.nextFastNode.value + } + return nil +} + +// Next implements dbm.Iterator +func (iter *FastIterator) Next() { + if iter.ndb == nil { + iter.err = errFastIteratorNilNdbGiven + iter.valid = false + return + } + + if iter.fastIterator == nil { + iter.fastIterator, iter.err = iter.ndb.getFastIterator(iter.start, iter.end, iter.ascending) + iter.valid = true + } else { + iter.fastIterator.Next() + } + + if iter.err == nil { + iter.err = iter.fastIterator.Error() + } + + iter.valid = iter.valid && iter.fastIterator.Valid() + if iter.valid { + iter.nextFastNode, iter.err = DeserializeFastNode(iter.fastIterator.Key()[1:], iter.fastIterator.Value()) + iter.valid = iter.err == nil + } +} + +// Close implements dbm.Iterator +func (iter *FastIterator) Close() error { + if iter.fastIterator != nil { + iter.err = iter.fastIterator.Close() + } + iter.valid = false + iter.fastIterator = nil + return iter.err +} + +// Error implements dbm.Iterator +func (iter *FastIterator) Error() error { + return iter.err +} diff --git a/fast_node.go b/fast_node.go index ef86b5e31..2113cc350 100644 --- a/fast_node.go +++ b/fast_node.go @@ -2,6 +2,7 @@ package iavl import ( "github.com/pkg/errors" + "io" ) // NOTE: This file favors int64 as opposed to int for size/counts. @@ -11,7 +12,6 @@ type FastNode struct { key []byte versionLastUpdatedAt int64 value []byte - leafHash []byte // TODO: Look into if this would help with proof stuff. } // NewFastNode returns a new fast node from a value and version. @@ -24,22 +24,44 @@ func NewFastNode(key []byte, value []byte, version int64) *FastNode { } // DeserializeFastNode constructs an *FastNode from an encoded byte slice. -func DeserializeFastNode(buf []byte) (*FastNode, error) { - val, n, cause := decodeBytes(buf) +func DeserializeFastNode(key []byte, buf []byte) (*FastNode, error) { + ver, n, cause := decodeVarint(buf) if cause != nil { - return nil, errors.Wrap(cause, "decoding fastnode.value") + return nil, errors.Wrap(cause, "decoding fastnode.version") } buf = buf[n:] - ver, _, cause := decodeVarint(buf) + val, _, cause := decodeBytes(buf) if cause != nil { - return nil, errors.Wrap(cause, "decoding fastnode.version") + return nil, errors.Wrap(cause, "decoding fastnode.value") } fastNode := &FastNode{ + key: key, versionLastUpdatedAt: ver, value: val, } return fastNode, nil } + +func (node *FastNode) encodedSize() int { + n := encodeVarintSize(node.versionLastUpdatedAt) + encodeBytesSize(node.value) + return n +} + +// writeBytes writes the FastNode as a serialized byte slice to the supplied io.Writer. +func (node *FastNode) writeBytes(w io.Writer) error { + if node == nil { + return errors.New("cannot write nil node") + } + cause := encodeVarint(w, node.versionLastUpdatedAt) + if cause != nil { + return errors.Wrap(cause, "writing version last updated at") + } + cause = encodeBytes(w, node.value) + if cause != nil { + return errors.Wrap(cause, "writing value") + } + return nil +} diff --git a/fast_node_test.go b/fast_node_test.go new file mode 100644 index 000000000..b6e1ffd98 --- /dev/null +++ b/fast_node_test.go @@ -0,0 +1,58 @@ +package iavl + +import ( + "bytes" + "encoding/hex" + "testing" + + "github.com/stretchr/testify/require" +) + +func TestFastNode_encodedSize(t *testing.T) { + fastNode := &FastNode{ + key: randBytes(10), + versionLastUpdatedAt: 1, + value: randBytes(20), + } + + expectedSize := 1 + len(fastNode.value) + 1 + + require.Equal(t, expectedSize, fastNode.encodedSize()) +} + +func TestFastNode_encode_decode(t *testing.T) { + testcases := map[string]struct { + node *FastNode + expectHex string + expectError bool + }{ + "nil": {nil, "", true}, + "empty": {&FastNode{}, "0000", false}, + "inner": {&FastNode{ + key: []byte{0x4}, + versionLastUpdatedAt: 1, + value: []byte{0x2}, + }, "020102", false}, + } + for name, tc := range testcases { + tc := tc + t.Run(name, func(t *testing.T) { + var buf bytes.Buffer + err := tc.node.writeBytes(&buf) + if tc.expectError { + require.Error(t, err) + return + } + require.NoError(t, err) + require.Equal(t, tc.expectHex, hex.EncodeToString(buf.Bytes())) + + node, err := DeserializeFastNode(tc.node.key, buf.Bytes()) + require.NoError(t, err) + // since value and leafHash are always decoded to []byte{} we augment the expected struct here + if tc.node.value == nil { + tc.node.value = []byte{} + } + require.Equal(t, tc.node, node) + }) + } +} diff --git a/go.mod b/go.mod index f6a1da972..12aa7dd09 100644 --- a/go.mod +++ b/go.mod @@ -6,12 +6,13 @@ require ( github.com/confio/ics23/go v0.6.6 github.com/gogo/gateway v1.1.0 github.com/gogo/protobuf v1.3.2 + github.com/golang/mock v1.6.0 github.com/golang/protobuf v1.5.2 github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 github.com/grpc-ecosystem/grpc-gateway v1.16.0 github.com/pkg/errors v0.9.1 github.com/stretchr/testify v1.7.0 - github.com/tendermint/tendermint v0.35.0 + github.com/tendermint/tendermint v0.34.14 github.com/tendermint/tm-db v0.6.4 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 google.golang.org/genproto v0.0.0-20210917145530-b395a37504d4 diff --git a/go.sum b/go.sum index f79727677..41474fb9f 100644 --- a/go.sum +++ b/go.sum @@ -1,6 +1,3 @@ -4d63.com/gochecknoglobals v0.1.0/go.mod h1:wfdC5ZjKSPr7CybKEcgJhUOgeAQW1+7WcyK8OvUilfo= -bazil.org/fuse v0.0.0-20200407214033-5883e5a4b512/go.mod h1:FbcW6z/2VytnFDhZfumh8Ss8zxHE6qpMP5sHTRe0EaM= -bitbucket.org/creachadair/shell v0.0.6/go.mod h1:8Qqi/cYk7vPnsOePHroKXDJYmb5x7ENhtiFtfZq8K+M= cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= @@ -8,123 +5,59 @@ cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6A cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= -cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= -cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= -cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= -cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= -cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= -cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= -cloud.google.com/go v0.60.0/go.mod h1:yw2G51M9IfRboUH61Us8GqCeF1PzPblB823Mn2q2eAU= 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h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= -google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= -google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= -google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE= -google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE= google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34= -google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k= google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A= google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU= -google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw= google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= @@ -1414,7 +736,6 @@ google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzi google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= -google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4= google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= @@ -1423,20 +744,13 @@ google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo= gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= -gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= -gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b h1:QRR6H1YWRnHb4Y/HeNFCTJLFVxaq6wH4YuVdsUOr75U= -gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod 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gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= @@ -1447,31 +761,18 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gopkg.in/yaml.v2 v2.2.6/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= -gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c 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honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= -honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= -honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= -honnef.co/go/tools v0.2.1/go.mod h1:lPVVZ2BS5TfnjLyizF7o7hv7j9/L+8cZY2hLyjP9cGY= -mvdan.cc/gofumpt v0.1.1/go.mod h1:yXG1r1WqZVKWbVRtBWKWX9+CxGYfA51nSomhM0woR48= -mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc= -mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b/go.mod h1:2odslEg/xrtNQqCYg2/jCoyKnw3vv5biOc3JnIcYfL4= -mvdan.cc/unparam v0.0.0-20210104141923-aac4ce9116a7/go.mod h1:hBpJkZE8H/sb+VRFvw2+rBpHNsTBcvSpk61hr8mzXZE= -pgregory.net/rapid v0.4.7/go.mod h1:UYpPVyjFHzYBGHIxLFoupi8vwk6rXNzRY9OMvVxFIOU= rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8= -rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4= -rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0= -rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA= sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o= -sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc= +sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU= diff --git a/immutable_tree.go b/immutable_tree.go index 746b1c294..f81f11fb6 100644 --- a/immutable_tree.go +++ b/immutable_tree.go @@ -142,31 +142,58 @@ func (t *ImmutableTree) Export() *Exporter { return newExporter(t) } -// Get returns the index and value of the specified key if it exists, or nil and the next index +// GetWithIndex returns the index and value of the specified key if it exists, or nil and the next index // otherwise. The returned value must not be modified, since it may point to data stored within // IAVL. // // The index is the index in the list of leaf nodes sorted lexicographically by key. The leftmost leaf has index 0. // It's neighbor has index 1 and so on. -func (t *ImmutableTree) Get(key []byte) (index int64, value []byte) { +func (t *ImmutableTree) GetWithIndex(key []byte) (int64, []byte) { if t.root == nil { return 0, nil } + return t.root.get(t, key) +} + +// Get returns the value of the specified key if it exists, or nil. +// The returned value must not be modified, since it may point to data stored within IAVL. +// Get potentially employs a more performant strategy than GetWithIndex for retrieving the value. +func (t *ImmutableTree) Get(key []byte) []byte { + if t.root == nil { + return nil + } + // attempt to get a FastNode directly from db/cache. + // if call fails, fall back to the original IAVL logic in place. fastNode, err := t.ndb.GetFastNode(key) - if fastNode == nil || err != nil { - return t.root.get(t, key) + if err != nil { + debug("failed to get FastNode with key: %X, falling back to regular IAVL logic\n", key) + _, result := t.root.get(t, key) + return result } - value = fastNode.value - if value == nil { - return t.root.get(t, key) + + if fastNode == nil { + // If the tree is of the latest version and fast node is not in the tree + // then the regular node is not in the tree either because fast node + // represents live state. + if t.version == t.ndb.latestVersion { + debug("latest version with no fast node for key: %X. The node must not exist, return nil. Tree version: %d\n", key, t.version) + return nil + } + + debug("old version with no fast node for key: %X, falling back to regular IAVL logic. Tree version: %d\n", key, t.version) + _, result := t.root.get(t, key) + return result } - // cache node is too new, so read from historical tree + // cache node was updated later than the current tree. Use regular strategy for reading from the current tree if fastNode.versionLastUpdatedAt > t.version { - return t.root.get(t, key) + debug("last updated version %d is too new for FastNode where tree is of version %d with key %X, falling back to regular IAVL logic\n", fastNode.versionLastUpdatedAt, t.version, key) + _, result := t.root.get(t, key) + return result } - return 0, value // TODO determine index and adjust this appropriately + + return fastNode.value } // GetByIndex gets the key and value at the specified index. @@ -174,21 +201,35 @@ func (t *ImmutableTree) GetByIndex(index int64) (key []byte, value []byte) { if t.root == nil { return nil, nil } + return t.root.getByIndex(t, index) } -// Iterate iterates over all keys of the tree, in order. The keys and values must not be modified, -// since they may point to data stored within IAVL. -func (t *ImmutableTree) Iterate(fn func(key []byte, value []byte) bool) (stopped bool) { +// Iterate iterates over all keys of the tree. The keys and values must not be modified, +// since they may point to data stored within IAVL. Returns true if stopped by callback, false otherwise +func (t *ImmutableTree) Iterate(fn func(key []byte, value []byte) bool) bool { if t.root == nil { return false } - return t.root.traverse(t, true, func(node *Node) bool { - if node.height == 0 { - return fn(node.key, node.value) + + itr := t.Iterator(nil, nil, true) + defer itr.Close() + for ; itr.Valid(); itr.Next() { + if fn(itr.Key(), itr.Value()) { + return true } - return false - }) + + } + return false +} + +// Iterator returns an iterator over the immutable tree. +func (t *ImmutableTree) Iterator(start, end []byte, ascending bool) dbm.Iterator { + if t.IsFastCacheEnabled() { + return NewFastIterator(start, end, ascending, t.ndb) + } else { + return NewIterator(start, end, ascending, t) + } } // IterateRange makes a callback for all nodes with key between start and end non-inclusive. @@ -221,6 +262,18 @@ func (t *ImmutableTree) IterateRangeInclusive(start, end []byte, ascending bool, }) } +// IsFastCacheEnabled returns true if fast cache is enabled, false otherwise. +// For fast cache to be enabled, the following 2 conditions must be met: +// 1. The tree is of the latest version. +// 2. The underlying storage has been upgraded to fast cache +func (t *ImmutableTree) IsFastCacheEnabled() bool { + return t.isLatestTreeVersion() && t.ndb.hasUpgradedToFastStorage() +} + +func (t *ImmutableTree) isLatestTreeVersion() bool { + return t.version == t.ndb.getLatestVersion() +} + // Clone creates a clone of the tree. // Used internally by MutableTree. func (t *ImmutableTree) clone() *ImmutableTree { diff --git a/iterator.go b/iterator.go index bd69fcd42..b8e3896bb 100644 --- a/iterator.go +++ b/iterator.go @@ -5,6 +5,7 @@ package iavl import ( "bytes" + "errors" dbm "github.com/tendermint/tm-db" ) @@ -18,6 +19,8 @@ type traversal struct { delayedNodes *delayedNodes // delayed nodes to be traversed } +var errIteratorNilTreeGiven = errors.New("iterator must be created with an immutable tree but the tree was nil") + func (node *Node) newTraversal(tree *ImmutableTree, start, end []byte, ascending bool, inclusive bool, post bool) *traversal { return &traversal{ tree: tree, @@ -157,23 +160,33 @@ type Iterator struct { valid bool + err error + t *traversal } -func (t *ImmutableTree) Iterator(start, end []byte, ascending bool) *Iterator { +var _ dbm.Iterator = &Iterator{} + +// Returns a new iterator over the immutable tree. If the tree is nil, the iterator will be invalid. +func NewIterator(start, end []byte, ascending bool, tree *ImmutableTree) dbm.Iterator { iter := &Iterator{ start: start, end: end, - valid: true, - t: t.root.newTraversal(t, start, end, ascending, false, false), + valid: tree != nil, + t: nil, + } + + if iter.valid { + iter.t = tree.root.newTraversal(tree, start, end, ascending, false, false) + // Move iterator before the first element + iter.Next() + } else { + iter.err = errIteratorNilTreeGiven } - iter.Next() return iter } -var _ dbm.Iterator = &Iterator{} - // Domain implements dbm.Iterator. func (iter *Iterator) Domain() ([]byte, []byte) { return iter.start, iter.end @@ -219,10 +232,18 @@ func (iter *Iterator) Next() { func (iter *Iterator) Close() error { iter.t = nil iter.valid = false - return nil + return iter.err } // Error implements dbm.Iterator func (iter *Iterator) Error() error { + if iter.err != nil { + return iter.err + } return nil } + +// IsFast returnts true if iterator uses fast strategy +func (iter *Iterator) IsFast() bool { + return false +} diff --git a/iterator_test.go b/iterator_test.go new file mode 100644 index 000000000..f32a579cd --- /dev/null +++ b/iterator_test.go @@ -0,0 +1,409 @@ +package iavl + +import ( + "math/rand" + "sort" + "testing" + + "github.com/stretchr/testify/require" + dbm "github.com/tendermint/tm-db" +) + +func TestIterator_NewIterator_NilTree_Failure(t *testing.T) { + var start, end []byte = []byte{'a'}, []byte{'c'} + ascending := true + + performTest := func(t *testing.T, itr dbm.Iterator) { + require.NotNil(t, itr) + require.False(t, itr.Valid()) + actualsStart, actualEnd := itr.Domain() + require.Equal(t, start, actualsStart) + require.Equal(t, end, actualEnd) + require.Error(t, itr.Error()) + } + + t.Run("Iterator", func(t *testing.T) { + itr := NewIterator(start, end, ascending, nil) + performTest(t, itr) + require.ErrorIs(t, errIteratorNilTreeGiven, itr.Error()) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr := NewFastIterator(start, end, ascending, nil) + performTest(t, itr) + require.ErrorIs(t, errFastIteratorNilNdbGiven, itr.Error()) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr := NewUnsavedFastIterator(start, end, ascending, nil, map[string]*FastNode{}, map[string]interface{}{}) + performTest(t, itr) + require.ErrorIs(t, errFastIteratorNilNdbGiven, itr.Error()) + }) +} + +func TestUnsavedFastIterator_NewIterator_NilAdditions_Failure(t *testing.T) { + var start, end []byte = []byte{'a'}, []byte{'c'} + ascending := true + + performTest := func(t *testing.T, itr dbm.Iterator) { + require.NotNil(t, itr) + require.False(t, itr.Valid()) + actualsStart, actualEnd := itr.Domain() + require.Equal(t, start, actualsStart) + require.Equal(t, end, actualEnd) + require.Error(t, itr.Error()) + } + + t.Run("Nil additions given", func(t *testing.T) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + itr := NewUnsavedFastIterator(start, end, ascending, tree.ndb, nil, tree.unsavedFastNodeRemovals) + performTest(t, itr) + require.ErrorIs(t, errUnsavedFastIteratorNilAdditionsGiven, itr.Error()) + }) + + t.Run("Nil removals given", func(t *testing.T) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + itr := NewUnsavedFastIterator(start, end, ascending, tree.ndb, tree.unsavedFastNodeAdditions, nil) + performTest(t, itr) + require.ErrorIs(t, errUnsavedFastIteratorNilRemovalsGiven, itr.Error()) + }) + + t.Run("All nil", func(t *testing.T) { + itr := NewUnsavedFastIterator(start, end, ascending, nil, nil, nil) + performTest(t, itr) + require.ErrorIs(t, errFastIteratorNilNdbGiven, itr.Error()) + }) + + t.Run("Additions and removals are nil", func(t *testing.T) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + itr := NewUnsavedFastIterator(start, end, ascending, tree.ndb, nil, nil) + performTest(t, itr) + require.ErrorIs(t, errUnsavedFastIteratorNilAdditionsGiven, itr.Error()) + }) +} + +func TestIterator_Empty_Invalid(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: []byte("a"), + endIterate: []byte("a"), + ascending: true, + } + + performTest := func(t *testing.T, itr dbm.Iterator, mirror [][]string) { + require.Equal(t, 0, len(mirror)) + require.False(t, itr.Valid()) + } + + t.Run("Iterator", func(t *testing.T) { + itr, mirror := setupIteratorAndMirror(t, config) + performTest(t, itr, mirror) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr, mirror := setupFastIteratorAndMirror(t, config) + performTest(t, itr, mirror) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr, mirror := setupUnsavedFastIterator(t, config) + performTest(t, itr, mirror) + }) +} + +func TestIterator_Basic_Ranged_Ascending_Success(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: []byte("e"), + endIterate: []byte("w"), + ascending: true, + } + + performTest := func(t *testing.T, itr dbm.Iterator, mirror [][]string) { + actualStart, actualEnd := itr.Domain() + require.Equal(t, config.startIterate, actualStart) + require.Equal(t, config.endIterate, actualEnd) + + require.NoError(t, itr.Error()) + + assertIterator(t, itr, mirror, config.ascending) + } + + t.Run("Iterator", func(t *testing.T) { + itr, mirror := setupIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr, mirror := setupFastIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr, mirror := setupUnsavedFastIterator(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) +} + +func TestIterator_Basic_Ranged_Descending_Success(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: []byte("e"), + endIterate: []byte("w"), + ascending: false, + } + + performTest := func(t *testing.T, itr dbm.Iterator, mirror [][]string) { + actualStart, actualEnd := itr.Domain() + require.Equal(t, config.startIterate, actualStart) + require.Equal(t, config.endIterate, actualEnd) + + require.NoError(t, itr.Error()) + + assertIterator(t, itr, mirror, config.ascending) + } + + t.Run("Iterator", func(t *testing.T) { + itr, mirror := setupIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr, mirror := setupFastIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr, mirror := setupUnsavedFastIterator(t, config) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) +} + +func TestIterator_Basic_Full_Ascending_Success(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: nil, + endIterate: nil, + ascending: true, + } + + performTest := func(t *testing.T, itr dbm.Iterator, mirror [][]string) { + actualStart, actualEnd := itr.Domain() + require.Equal(t, config.startIterate, actualStart) + require.Equal(t, config.endIterate, actualEnd) + + require.NoError(t, itr.Error()) + + assertIterator(t, itr, mirror, config.ascending) + } + + t.Run("Iterator", func(t *testing.T) { + itr, mirror := setupIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + require.Equal(t, 25, len(mirror)) + performTest(t, itr, mirror) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr, mirror := setupFastIteratorAndMirror(t, config) + require.True(t, itr.Valid()) + require.Equal(t, 25, len(mirror)) + performTest(t, itr, mirror) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr, mirror := setupUnsavedFastIterator(t, config) + require.True(t, itr.Valid()) + require.Equal(t, 25-25/4+1, len(mirror)) // to account for removals + performTest(t, itr, mirror) + }) +} + +func TestIterator_Basic_Full_Descending_Success(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: nil, + endIterate: nil, + ascending: false, + } + + performTest := func(t *testing.T, itr dbm.Iterator, mirror [][]string) { + actualStart, actualEnd := itr.Domain() + require.Equal(t, config.startIterate, actualStart) + require.Equal(t, config.endIterate, actualEnd) + + require.NoError(t, itr.Error()) + + assertIterator(t, itr, mirror, config.ascending) + } + + t.Run("Iterator", func(t *testing.T) { + itr, mirror := setupIteratorAndMirror(t, config) + require.Equal(t, 25, len(mirror)) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr, mirror := setupFastIteratorAndMirror(t, config) + require.Equal(t, 25, len(mirror)) + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr, mirror := setupUnsavedFastIterator(t, config) + require.Equal(t, 25-25/4+1, len(mirror)) // to account for removals + require.True(t, itr.Valid()) + performTest(t, itr, mirror) + }) +} + +func TestIterator_WithDelete_Full_Ascending_Success(t *testing.T) { + config := &iteratorTestConfig{ + startByteToSet: 'a', + endByteToSet: 'z', + startIterate: nil, + endIterate: nil, + ascending: false, + } + + tree, mirror := getRandomizedTreeAndMirror(t) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + randomizeTreeAndMirror(t, tree, mirror) + + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + err = tree.DeleteVersion(1) + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(tree.ndb.getLatestVersion()) + require.NoError(t, err) + + // sort mirror for assertion + sortedMirror := make([][]string, 0, len(mirror)) + for k, v := range mirror { + sortedMirror = append(sortedMirror, []string{k, v}) + } + + sort.Slice(sortedMirror, func(i, j int) bool { + return sortedMirror[i][0] > sortedMirror[j][0] + }) + + t.Run("Iterator", func(t *testing.T) { + itr := NewIterator(config.startIterate, config.endIterate, config.ascending, immutableTree) + require.True(t, itr.Valid()) + assertIterator(t, itr, sortedMirror, config.ascending) + }) + + t.Run("Fast Iterator", func(t *testing.T) { + itr := NewFastIterator(config.startIterate, config.endIterate, config.ascending, immutableTree.ndb) + require.True(t, itr.Valid()) + assertIterator(t, itr, sortedMirror, config.ascending) + }) + + t.Run("Unsaved Fast Iterator", func(t *testing.T) { + itr := NewUnsavedFastIterator(config.startIterate, config.endIterate, config.ascending, immutableTree.ndb, tree.unsavedFastNodeAdditions, tree.unsavedFastNodeRemovals) + require.True(t, itr.Valid()) + assertIterator(t, itr, sortedMirror, config.ascending) + }) +} + +func setupIteratorAndMirror(t *testing.T, config *iteratorTestConfig) (dbm.Iterator, [][]string) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + + mirror := setupMirrorForIterator(t, config, tree) + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(tree.ndb.getLatestVersion()) + require.NoError(t, err) + + itr := NewIterator(config.startIterate, config.endIterate, config.ascending, immutableTree) + return itr, mirror +} + +func setupFastIteratorAndMirror(t *testing.T, config *iteratorTestConfig) (dbm.Iterator, [][]string) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + + mirror := setupMirrorForIterator(t, config, tree) + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + itr := NewFastIterator(config.startIterate, config.endIterate, config.ascending, tree.ndb) + return itr, mirror +} + +func setupUnsavedFastIterator(t *testing.T, config *iteratorTestConfig) (dbm.Iterator, [][]string) { + tree, err := NewMutableTree(dbm.NewMemDB(), 0) + require.NoError(t, err) + + // For unsaved fast iterator, we would like to test the state where + // there are saved fast nodes as well as some unsaved additions and removals. + // So, we split the byte range in half where the first half is saved and the second half is unsaved. + breakpointByte := (config.endByteToSet + config.startByteToSet) / 2 + + firstHalfConfig := *config + firstHalfConfig.endByteToSet = breakpointByte // exclusive + + secondHalfConfig := *config + secondHalfConfig.startByteToSet = breakpointByte + + firstHalfMirror := setupMirrorForIterator(t, &firstHalfConfig, tree) + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + // No unsaved additions or removals should be present after saving + require.Equal(t, 0, len(tree.unsavedFastNodeAdditions)) + require.Equal(t, 0, len(tree.unsavedFastNodeRemovals)) + + // Ensure that there are unsaved additions and removals present + secondHalfMirror := setupMirrorForIterator(t, &secondHalfConfig, tree) + + require.True(t, len(tree.unsavedFastNodeAdditions) >= len(secondHalfMirror)) + require.Equal(t, 0, len(tree.unsavedFastNodeRemovals)) + + // Merge the two halves + var mergedMirror [][]string + if config.ascending { + mergedMirror = append(firstHalfMirror, secondHalfMirror...) + } else { + mergedMirror = append(secondHalfMirror, firstHalfMirror...) + } + + if len(mergedMirror) > 0 { + // Remove random keys + for i := 0; i < len(mergedMirror)/4; i++ { + randIndex := rand.Intn(len(mergedMirror)) + keyToRemove := mergedMirror[randIndex][0] + + _, removed := tree.Remove([]byte(keyToRemove)) + require.True(t, removed) + + mergedMirror = append(mergedMirror[:randIndex], mergedMirror[randIndex+1:]...) + } + } + + itr := NewUnsavedFastIterator(config.startIterate, config.endIterate, config.ascending, tree.ndb, tree.unsavedFastNodeAdditions, tree.unsavedFastNodeRemovals) + return itr, mergedMirror +} diff --git a/key_format_test.go b/key_format_test.go index 439730cb0..cc3a2d4f7 100644 --- a/key_format_test.go +++ b/key_format_test.go @@ -13,11 +13,11 @@ func TestKeyFormatBytes(t *testing.T) { } emptyTestVector := keyPairs{key: [][]byte{}, expected: []byte{'e'}} threeByteTestVector := keyPairs{ - key: [][]byte{[]byte{1, 2, 3}}, + key: [][]byte{{1, 2, 3}}, expected: []byte{'e', 0, 0, 0, 0, 0, 1, 2, 3}, } eightByteTestVector := keyPairs{ - key: [][]byte{[]byte{1, 2, 3, 4, 5, 6, 7, 8}}, + key: [][]byte{{1, 2, 3, 4, 5, 6, 7, 8}}, expected: []byte{'e', 1, 2, 3, 4, 5, 6, 7, 8}, } @@ -33,7 +33,7 @@ func TestKeyFormatBytes(t *testing.T) { threeByteTestVector, eightByteTestVector, { - key: [][]byte{[]byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte{1, 1, 2, 2, 3, 3}}, + key: [][]byte{{1, 2, 3, 4, 5, 6, 7, 8}, {1, 2, 3, 4, 5, 6, 7, 8}, {1, 1, 2, 2, 3, 3}}, expected: []byte{'e', 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 0, 0, 1, 1, 2, 2, 3, 3}, }, }, @@ -45,11 +45,11 @@ func TestKeyFormatBytes(t *testing.T) { threeByteTestVector, eightByteTestVector, { - key: [][]byte{[]byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte{1, 2, 3, 4, 5, 6, 7, 8, 9}}, + key: [][]byte{{1, 2, 3, 4, 5, 6, 7, 8}, {1, 2, 3, 4, 5, 6, 7, 8, 9}}, expected: []byte{'e', 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9}, }, { - key: [][]byte{[]byte{1, 2, 3, 4, 5, 6, 7, 8}, []byte("hellohello")}, + key: [][]byte{{1, 2, 3, 4, 5, 6, 7, 8}, []byte("hellohello")}, expected: []byte{'e', 1, 2, 3, 4, 5, 6, 7, 8, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x68, 0x65, 0x6c, 0x6c, 0x6f}, }, }, diff --git a/mock/db_mock.go b/mock/db_mock.go new file mode 100644 index 000000000..8120cc64f --- /dev/null +++ b/mock/db_mock.go @@ -0,0 +1,420 @@ +// Code generated by MockGen. DO NOT EDIT. +// Source: /root/go/pkg/mod/github.com/tendermint/tm-db@v0.6.4/types.go + +// Package mock is a generated GoMock package. +package mock + +import ( + reflect "reflect" + + gomock "github.com/golang/mock/gomock" + db "github.com/tendermint/tm-db" +) + +// MockDB is a mock of DB interface. +type MockDB struct { + ctrl *gomock.Controller + recorder *MockDBMockRecorder +} + +// MockDBMockRecorder is the mock recorder for MockDB. +type MockDBMockRecorder struct { + mock *MockDB +} + +// NewMockDB creates a new mock instance. +func NewMockDB(ctrl *gomock.Controller) *MockDB { + mock := &MockDB{ctrl: ctrl} + mock.recorder = &MockDBMockRecorder{mock} + return mock +} + +// EXPECT returns an object that allows the caller to indicate expected use. +func (m *MockDB) EXPECT() *MockDBMockRecorder { + return m.recorder +} + +// Close mocks base method. +func (m *MockDB) Close() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Close") + ret0, _ := ret[0].(error) + return ret0 +} + +// Close indicates an expected call of Close. +func (mr *MockDBMockRecorder) Close() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Close", reflect.TypeOf((*MockDB)(nil).Close)) +} + +// Delete mocks base method. +func (m *MockDB) Delete(arg0 []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Delete", arg0) + ret0, _ := ret[0].(error) + return ret0 +} + +// Delete indicates an expected call of Delete. +func (mr *MockDBMockRecorder) Delete(arg0 interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Delete", reflect.TypeOf((*MockDB)(nil).Delete), arg0) +} + +// DeleteSync mocks base method. +func (m *MockDB) DeleteSync(arg0 []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "DeleteSync", arg0) + ret0, _ := ret[0].(error) + return ret0 +} + +// DeleteSync indicates an expected call of DeleteSync. +func (mr *MockDBMockRecorder) DeleteSync(arg0 interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DeleteSync", reflect.TypeOf((*MockDB)(nil).DeleteSync), arg0) +} + +// Get mocks base method. +func (m *MockDB) Get(arg0 []byte) ([]byte, error) { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Get", arg0) + ret0, _ := ret[0].([]byte) + ret1, _ := ret[1].(error) + return ret0, ret1 +} + +// Get indicates an expected call of Get. +func (mr *MockDBMockRecorder) Get(arg0 interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Get", reflect.TypeOf((*MockDB)(nil).Get), arg0) +} + +// Has mocks base method. +func (m *MockDB) Has(key []byte) (bool, error) { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Has", key) + ret0, _ := ret[0].(bool) + ret1, _ := ret[1].(error) + return ret0, ret1 +} + +// Has indicates an expected call of Has. +func (mr *MockDBMockRecorder) Has(key interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Has", reflect.TypeOf((*MockDB)(nil).Has), key) +} + +// Iterator mocks base method. +func (m *MockDB) Iterator(start, end []byte) (db.Iterator, error) { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Iterator", start, end) + ret0, _ := ret[0].(db.Iterator) + ret1, _ := ret[1].(error) + return ret0, ret1 +} + +// Iterator indicates an expected call of Iterator. +func (mr *MockDBMockRecorder) Iterator(start, end interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Iterator", reflect.TypeOf((*MockDB)(nil).Iterator), start, end) +} + +// NewBatch mocks base method. +func (m *MockDB) NewBatch() db.Batch { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "NewBatch") + ret0, _ := ret[0].(db.Batch) + return ret0 +} + +// NewBatch indicates an expected call of NewBatch. +func (mr *MockDBMockRecorder) NewBatch() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "NewBatch", reflect.TypeOf((*MockDB)(nil).NewBatch)) +} + +// Print mocks base method. +func (m *MockDB) Print() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Print") + ret0, _ := ret[0].(error) + return ret0 +} + +// Print indicates an expected call of Print. +func (mr *MockDBMockRecorder) Print() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Print", reflect.TypeOf((*MockDB)(nil).Print)) +} + +// ReverseIterator mocks base method. +func (m *MockDB) ReverseIterator(start, end []byte) (db.Iterator, error) { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "ReverseIterator", start, end) + ret0, _ := ret[0].(db.Iterator) + ret1, _ := ret[1].(error) + return ret0, ret1 +} + +// ReverseIterator indicates an expected call of ReverseIterator. +func (mr *MockDBMockRecorder) ReverseIterator(start, end interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReverseIterator", reflect.TypeOf((*MockDB)(nil).ReverseIterator), start, end) +} + +// Set mocks base method. +func (m *MockDB) Set(arg0, arg1 []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Set", arg0, arg1) + ret0, _ := ret[0].(error) + return ret0 +} + +// Set indicates an expected call of Set. +func (mr *MockDBMockRecorder) Set(arg0, arg1 interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Set", reflect.TypeOf((*MockDB)(nil).Set), arg0, arg1) +} + +// SetSync mocks base method. +func (m *MockDB) SetSync(arg0, arg1 []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "SetSync", arg0, arg1) + ret0, _ := ret[0].(error) + return ret0 +} + +// SetSync indicates an expected call of SetSync. +func (mr *MockDBMockRecorder) SetSync(arg0, arg1 interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetSync", reflect.TypeOf((*MockDB)(nil).SetSync), arg0, arg1) +} + +// Stats mocks base method. +func (m *MockDB) Stats() map[string]string { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Stats") + ret0, _ := ret[0].(map[string]string) + return ret0 +} + +// Stats indicates an expected call of Stats. +func (mr *MockDBMockRecorder) Stats() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Stats", reflect.TypeOf((*MockDB)(nil).Stats)) +} + +// MockBatch is a mock of Batch interface. +type MockBatch struct { + ctrl *gomock.Controller + recorder *MockBatchMockRecorder +} + +// MockBatchMockRecorder is the mock recorder for MockBatch. +type MockBatchMockRecorder struct { + mock *MockBatch +} + +// NewMockBatch creates a new mock instance. +func NewMockBatch(ctrl *gomock.Controller) *MockBatch { + mock := &MockBatch{ctrl: ctrl} + mock.recorder = &MockBatchMockRecorder{mock} + return mock +} + +// EXPECT returns an object that allows the caller to indicate expected use. +func (m *MockBatch) EXPECT() *MockBatchMockRecorder { + return m.recorder +} + +// Close mocks base method. +func (m *MockBatch) Close() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Close") + ret0, _ := ret[0].(error) + return ret0 +} + +// Close indicates an expected call of Close. +func (mr *MockBatchMockRecorder) Close() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Close", reflect.TypeOf((*MockBatch)(nil).Close)) +} + +// Delete mocks base method. +func (m *MockBatch) Delete(key []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Delete", key) + ret0, _ := ret[0].(error) + return ret0 +} + +// Delete indicates an expected call of Delete. +func (mr *MockBatchMockRecorder) Delete(key interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Delete", reflect.TypeOf((*MockBatch)(nil).Delete), key) +} + +// Set mocks base method. +func (m *MockBatch) Set(key, value []byte) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Set", key, value) + ret0, _ := ret[0].(error) + return ret0 +} + +// Set indicates an expected call of Set. +func (mr *MockBatchMockRecorder) Set(key, value interface{}) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Set", reflect.TypeOf((*MockBatch)(nil).Set), key, value) +} + +// Write mocks base method. +func (m *MockBatch) Write() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Write") + ret0, _ := ret[0].(error) + return ret0 +} + +// Write indicates an expected call of Write. +func (mr *MockBatchMockRecorder) Write() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Write", reflect.TypeOf((*MockBatch)(nil).Write)) +} + +// WriteSync mocks base method. +func (m *MockBatch) WriteSync() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "WriteSync") + ret0, _ := ret[0].(error) + return ret0 +} + +// WriteSync indicates an expected call of WriteSync. +func (mr *MockBatchMockRecorder) WriteSync() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "WriteSync", reflect.TypeOf((*MockBatch)(nil).WriteSync)) +} + +// MockIterator is a mock of Iterator interface. +type MockIterator struct { + ctrl *gomock.Controller + recorder *MockIteratorMockRecorder +} + +// MockIteratorMockRecorder is the mock recorder for MockIterator. +type MockIteratorMockRecorder struct { + mock *MockIterator +} + +// NewMockIterator creates a new mock instance. +func NewMockIterator(ctrl *gomock.Controller) *MockIterator { + mock := &MockIterator{ctrl: ctrl} + mock.recorder = &MockIteratorMockRecorder{mock} + return mock +} + +// EXPECT returns an object that allows the caller to indicate expected use. +func (m *MockIterator) EXPECT() *MockIteratorMockRecorder { + return m.recorder +} + +// Close mocks base method. +func (m *MockIterator) Close() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Close") + ret0, _ := ret[0].(error) + return ret0 +} + +// Close indicates an expected call of Close. +func (mr *MockIteratorMockRecorder) Close() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Close", reflect.TypeOf((*MockIterator)(nil).Close)) +} + +// Domain mocks base method. +func (m *MockIterator) Domain() ([]byte, []byte) { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Domain") + ret0, _ := ret[0].([]byte) + ret1, _ := ret[1].([]byte) + return ret0, ret1 +} + +// Domain indicates an expected call of Domain. +func (mr *MockIteratorMockRecorder) Domain() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Domain", reflect.TypeOf((*MockIterator)(nil).Domain)) +} + +// Error mocks base method. +func (m *MockIterator) Error() error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Error") + ret0, _ := ret[0].(error) + return ret0 +} + +// Error indicates an expected call of Error. +func (mr *MockIteratorMockRecorder) Error() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Error", reflect.TypeOf((*MockIterator)(nil).Error)) +} + +// Key mocks base method. +func (m *MockIterator) Key() []byte { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Key") + ret0, _ := ret[0].([]byte) + return ret0 +} + +// Key indicates an expected call of Key. +func (mr *MockIteratorMockRecorder) Key() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Key", reflect.TypeOf((*MockIterator)(nil).Key)) +} + +// Next mocks base method. +func (m *MockIterator) Next() { + m.ctrl.T.Helper() + m.ctrl.Call(m, "Next") +} + +// Next indicates an expected call of Next. +func (mr *MockIteratorMockRecorder) Next() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Next", reflect.TypeOf((*MockIterator)(nil).Next)) +} + +// Valid mocks base method. +func (m *MockIterator) Valid() bool { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Valid") + ret0, _ := ret[0].(bool) + return ret0 +} + +// Valid indicates an expected call of Valid. +func (mr *MockIteratorMockRecorder) Valid() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Valid", reflect.TypeOf((*MockIterator)(nil).Valid)) +} + +// Value mocks base method. +func (m *MockIterator) Value() []byte { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Value") + ret0, _ := ret[0].([]byte) + return ret0 +} + +// Value indicates an expected call of Value. +func (mr *MockIteratorMockRecorder) Value() *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Value", reflect.TypeOf((*MockIterator)(nil).Value)) +} diff --git a/mutable_tree.go b/mutable_tree.go index 764467089..0c14af666 100644 --- a/mutable_tree.go +++ b/mutable_tree.go @@ -24,12 +24,14 @@ var ErrVersionDoesNotExist = errors.New("version does not exist") // // The inner ImmutableTree should not be used directly by callers. type MutableTree struct { - *ImmutableTree // The current, working tree. - lastSaved *ImmutableTree // The most recently saved tree. - orphans map[string]int64 // Nodes removed by changes to working tree. - versions map[int64]bool // The previous, saved versions of the tree. - allRootLoaded bool // Whether all roots are loaded or not(by LazyLoadVersion) - ndb *nodeDB + *ImmutableTree // The current, working tree. + lastSaved *ImmutableTree // The most recently saved tree. + orphans map[string]int64 // Nodes removed by changes to working tree. + versions map[int64]bool // The previous, saved versions of the tree. + allRootLoaded bool // Whether all roots are loaded or not(by LazyLoadVersion) + unsavedFastNodeAdditions map[string]*FastNode // FastNodes that have not yet been saved to disk + unsavedFastNodeRemovals map[string]interface{} // FastNodes that have not yet been removed from disk + ndb *nodeDB mtx sync.RWMutex // versions Read/write lock. } @@ -45,12 +47,14 @@ func NewMutableTreeWithOpts(db dbm.DB, cacheSize int, opts *Options) (*MutableTr head := &ImmutableTree{ndb: ndb} return &MutableTree{ - ImmutableTree: head, - lastSaved: head.clone(), - orphans: map[string]int64{}, - versions: map[int64]bool{}, - allRootLoaded: false, - ndb: ndb, + ImmutableTree: head, + lastSaved: head.clone(), + orphans: map[string]int64{}, + versions: map[int64]bool{}, + allRootLoaded: false, + unsavedFastNodeAdditions: make(map[string]*FastNode), + unsavedFastNodeRemovals: make(map[string]interface{}), + ndb: ndb, }, nil } @@ -105,7 +109,7 @@ func (tree *MutableTree) WorkingHash() []byte { } // String returns a string representation of the tree. -func (tree *MutableTree) String() string { +func (tree *MutableTree) String() (string, error) { return tree.ndb.String() } @@ -126,6 +130,20 @@ func (tree *MutableTree) Set(key, value []byte) (updated bool) { return updated } +// Get returns the value of the specified key if it exists, or nil otherwise. +// The returned value must not be modified, since it may point to data stored within IAVL. +func (t *MutableTree) Get(key []byte) []byte { + if t.root == nil { + return nil + } + + if fastNode, ok := t.unsavedFastNodeAdditions[string(key)]; ok { + return fastNode.value + } + + return t.ImmutableTree.Get(key) +} + // Import returns an importer for tree nodes previously exported by ImmutableTree.Export(), // producing an identical IAVL tree. The caller must call Close() on the importer when done. // @@ -138,12 +156,40 @@ func (tree *MutableTree) Import(version int64) (*Importer, error) { return newImporter(tree, version) } +// Iterate iterates over all keys of the tree. The keys and values must not be modified, +// since they may point to data stored within IAVL. Returns true if stopped by callnack, false otherwise +func (t *MutableTree) Iterate(fn func(key []byte, value []byte) bool) (stopped bool) { + if t.root == nil { + return false + } + + if !t.IsFastCacheEnabled() { + return t.ImmutableTree.Iterate(fn) + } + + itr := NewUnsavedFastIterator(nil, nil, true, t.ndb, t.unsavedFastNodeAdditions, t.unsavedFastNodeRemovals) + for ; itr.Valid(); itr.Next() { + if fn(itr.Key(), itr.Value()) { + return true + } + } + + return false +} + +// Iterator returns an iterator over the mutable tree. +// CONTRACT: no updates are made to the tree while an iterator is active. +func (t *MutableTree) Iterator(start, end []byte, ascending bool) dbm.Iterator { + return NewUnsavedFastIterator(start, end, ascending, t.ndb, t.unsavedFastNodeAdditions, t.unsavedFastNodeRemovals) +} + func (tree *MutableTree) set(key []byte, value []byte) (orphans []*Node, updated bool) { if value == nil { panic(fmt.Sprintf("Attempt to store nil value at key '%s'", key)) } if tree.ImmutableTree.root == nil { + tree.addUnsavedAddition(key, NewFastNode(key, value, tree.version+1)) tree.ImmutableTree.root = NewNode(key, value, tree.version+1) return nil, updated } @@ -159,6 +205,8 @@ func (tree *MutableTree) recursiveSet(node *Node, key []byte, value []byte, orph version := tree.version + 1 if node.isLeaf() { + tree.addUnsavedAddition(key, NewFastNode(key, value, version)) + switch bytes.Compare(key, node.key) { case -1: return &Node{ @@ -223,6 +271,8 @@ func (tree *MutableTree) remove(key []byte) (value []byte, orphaned []*Node, rem return nil, nil, false } + tree.addUnsavedRemoval(key) + if newRoot == nil && newRootHash != nil { tree.root = tree.ndb.GetNode(newRootHash) } else { @@ -309,7 +359,10 @@ func (tree *MutableTree) LazyLoadVersion(targetVersion int64) (int64, error) { // no versions have been saved if the latest version is non-positive if latestVersion <= 0 { if targetVersion <= 0 { - return 0, nil + tree.mtx.Lock() + defer tree.mtx.Unlock() + _, err := tree.enableFastStorageAndCommitIfNotEnabled() + return 0, err } return 0, fmt.Errorf("no versions found while trying to load %v", targetVersion) } @@ -329,6 +382,7 @@ func (tree *MutableTree) LazyLoadVersion(targetVersion int64) (int64, error) { tree.mtx.Lock() defer tree.mtx.Unlock() + tree.versions[targetVersion] = true iTree := &ImmutableTree{ @@ -345,6 +399,11 @@ func (tree *MutableTree) LazyLoadVersion(targetVersion int64) (int64, error) { tree.ImmutableTree = iTree tree.lastSaved = iTree.clone() + // Attempt to upgrade + if _, err := tree.enableFastStorageAndCommitIfNotEnabled(); err != nil { + return 0, err + } + return targetVersion, nil } @@ -357,7 +416,10 @@ func (tree *MutableTree) LoadVersion(targetVersion int64) (int64, error) { if len(roots) == 0 { if targetVersion <= 0 { - return 0, nil + tree.mtx.Lock() + defer tree.mtx.Unlock() + _, err := tree.enableFastStorageAndCommitIfNotEnabled() + return 0, err } return 0, fmt.Errorf("no versions found while trying to load %v", targetVersion) } @@ -404,6 +466,11 @@ func (tree *MutableTree) LoadVersion(targetVersion int64) (int64, error) { tree.lastSaved = t.clone() tree.allRootLoaded = true + // Attempt to upgrade + if _, err := tree.enableFastStorageAndCommitIfNotEnabled(); err != nil { + return 0, err + } + return latestVersion, nil } @@ -419,7 +486,7 @@ func (tree *MutableTree) LoadVersionForOverwriting(targetVersion int64) (int64, return latestVersion, err } - if err = tree.ndb.Commit(); err != nil { + if err := tree.enableFastStorageAndCommitLocked(); err != nil { return latestVersion, err } @@ -437,6 +504,82 @@ func (tree *MutableTree) LoadVersionForOverwriting(targetVersion int64) (int64, return latestVersion, nil } +// Returns true if the tree may be auto-upgraded, false otherwise +// An example of when an upgrade may be performed is when we are enaling fast storage for the first time or +// need to overwrite fast nodes due to mismatch with live state. +func (tree *MutableTree) IsUpgradeable() bool { + return !tree.ndb.hasUpgradedToFastStorage() || tree.ndb.shouldForceFastStorageUpgrade() +} + +// enableFastStorageAndCommitIfNotEnabled if nodeDB doesn't mark fast storage as enabled, enable it, and commit the update. +// Checks whether the fast cache on disk matches latest live state. If not, deletes all existing fast nodes and repopulates them +// from latest tree. +func (tree *MutableTree) enableFastStorageAndCommitIfNotEnabled() (bool, error) { + shouldForceUpdate := tree.ndb.shouldForceFastStorageUpgrade() + isFastStorageEnabled := tree.ndb.hasUpgradedToFastStorage() + + if !tree.IsUpgradeable() { + return false, nil + } + + if isFastStorageEnabled && shouldForceUpdate { + // If there is a mismatch between which fast nodes are on disk and the live state due to temporary + // downgrade and subsequent re-upgrade, we cannot know for sure which fast nodes have been removed while downgraded, + // Therefore, there might exist stale fast nodes on disk. As a result, to avoid persisting the stale state, it might + // be worth to delete the fast nodes from disk. + fastItr := NewFastIterator(nil, nil, true, tree.ndb) + for ; fastItr.Valid(); fastItr.Next() { + tree.ndb.DeleteFastNode(fastItr.Key()) + } + fastItr.Close() + } + + if err := tree.enableFastStorageAndCommit(); err != nil { + tree.ndb.storageVersion = defaultStorageVersionValue + return false, err + } + return true, nil +} + +func (tree *MutableTree) enableFastStorageAndCommitLocked() error { + tree.mtx.Lock() + defer tree.mtx.Unlock() + return tree.enableFastStorageAndCommit() +} + +func (tree *MutableTree) enableFastStorageAndCommit() error { + debug("enabling fast storage, might take a while.") + var err error + defer func() { + if err != nil { + debug("failed to enable fast storage: %v\n", err) + } else { + debug("fast storage is enabled.") + } + }() + + itr := NewIterator(nil, nil, true, tree.ImmutableTree) + defer itr.Close() + for ; itr.Valid(); itr.Next() { + if err = tree.ndb.SaveFastNode(NewFastNode(itr.Key(), itr.Value(), tree.version)); err != nil { + return err + } + } + + if err = itr.Error(); err != nil { + return err + } + + if err = tree.ndb.setFastStorageVersionToBatch(); err != nil { + return err + } + + if err = tree.ndb.Commit(); err != nil { + return err + } + return nil +} + // GetImmutable loads an ImmutableTree at a given version for querying. The returned tree is // safe for concurrent access, provided the version is not deleted, e.g. via `DeleteVersion()`. func (tree *MutableTree) GetImmutable(version int64) (*ImmutableTree, error) { @@ -474,21 +617,32 @@ func (tree *MutableTree) Rollback() { tree.ImmutableTree = &ImmutableTree{ndb: tree.ndb, version: 0} } tree.orphans = map[string]int64{} + tree.unsavedFastNodeAdditions = map[string]*FastNode{} + tree.unsavedFastNodeRemovals = map[string]interface{}{} } // GetVersioned gets the value at the specified key and version. The returned value must not be // modified, since it may point to data stored within IAVL. -func (tree *MutableTree) GetVersioned(key []byte, version int64) ( - index int64, value []byte, -) { +func (tree *MutableTree) GetVersioned(key []byte, version int64) []byte { if tree.VersionExists(version) { + if tree.IsFastCacheEnabled() { + fastNode, _ := tree.ndb.GetFastNode(key) + if fastNode == nil && version == tree.ndb.latestVersion { + return nil + } + + if fastNode != nil && fastNode.versionLastUpdatedAt <= version { + return fastNode.value + } + } t, err := tree.GetImmutable(version) if err != nil { - return -1, nil + return nil } - return t.Get(key) + value := t.Get(key) + return value } - return -1, nil + return nil } // SaveVersion saves a new tree version to disk, based on the current state of @@ -543,6 +697,10 @@ func (tree *MutableTree) SaveVersion() ([]byte, int64, error) { } } + if err := tree.saveFastNodeVersion(); err != nil { + return nil, version, err + } + if err := tree.ndb.Commit(); err != nil { return nil, version, err } @@ -556,10 +714,76 @@ func (tree *MutableTree) SaveVersion() ([]byte, int64, error) { tree.ImmutableTree = tree.ImmutableTree.clone() tree.lastSaved = tree.ImmutableTree.clone() tree.orphans = map[string]int64{} + tree.unsavedFastNodeAdditions = make(map[string]*FastNode) + tree.unsavedFastNodeRemovals = make(map[string]interface{}) return tree.Hash(), version, nil } +func (tree *MutableTree) saveFastNodeVersion() error { + if err := tree.saveFastNodeAdditions(); err != nil { + return err + } + if err := tree.saveFastNodeRemovals(); err != nil { + return err + } + + if err := tree.ndb.setFastStorageVersionToBatch(); err != nil { + return err + } + + return nil +} + +func (tree *MutableTree) getUnsavedFastNodeAdditions() map[string]*FastNode { + return tree.unsavedFastNodeAdditions +} + +// getUnsavedFastNodeRemovals returns unsaved FastNodes to remove +func (tree *MutableTree) getUnsavedFastNodeRemovals() map[string]interface{} { + return tree.unsavedFastNodeRemovals +} + +func (tree *MutableTree) addUnsavedAddition(key []byte, node *FastNode) { + delete(tree.unsavedFastNodeRemovals, string(key)) + tree.unsavedFastNodeAdditions[string(key)] = node + tree.ndb.cacheFastNode(node) +} + +func (tree *MutableTree) saveFastNodeAdditions() error { + keysToSort := make([]string, 0, len(tree.unsavedFastNodeAdditions)) + for key := range tree.unsavedFastNodeAdditions { + keysToSort = append(keysToSort, key) + } + sort.Strings(keysToSort) + + for _, key := range keysToSort { + if err := tree.ndb.SaveFastNode(tree.unsavedFastNodeAdditions[key]); err != nil { + return err + } + } + return nil +} + +func (tree *MutableTree) addUnsavedRemoval(key []byte) { + delete(tree.unsavedFastNodeAdditions, string(key)) + tree.unsavedFastNodeRemovals[string(key)] = true + tree.ndb.uncacheFastNode(key) +} + +func (tree *MutableTree) saveFastNodeRemovals() error { + keysToSort := make([]string, 0, len(tree.unsavedFastNodeRemovals)) + for key := range tree.unsavedFastNodeRemovals { + keysToSort = append(keysToSort, key) + } + sort.Strings(keysToSort) + + for _, key := range keysToSort { + tree.ndb.DeleteFastNode([]byte(key)) + } + return nil +} + func (tree *MutableTree) deleteVersion(version int64) error { if version <= 0 { return errors.New("version must be greater than 0") diff --git a/mutable_tree_test.go b/mutable_tree_test.go index f7a75602c..a6ffd0088 100644 --- a/mutable_tree_test.go +++ b/mutable_tree_test.go @@ -2,11 +2,15 @@ package iavl import ( "bytes" + "errors" "fmt" "runtime" + "sort" "strconv" "testing" + "github.com/cosmos/iavl/mock" + "github.com/golang/mock/gomock" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" @@ -101,7 +105,7 @@ func TestMutableTree_DeleteVersions(t *testing.T) { require.NoError(t, err) for _, e := range versionEntries[v] { - _, val := tree.Get(e.key) + val := tree.Get(e.key) require.Equal(t, e.value, val) } } @@ -178,12 +182,12 @@ func TestMutableTree_DeleteVersionsRange(t *testing.T) { require.NoError(err, version) require.Equal(v, version) - _, value := tree.Get([]byte("aaa")) + value := tree.Get([]byte("aaa")) require.Equal(string(value), "bbb") for _, count := range versions[:version] { countStr := strconv.Itoa(int(count)) - _, value := tree.Get([]byte("key" + countStr)) + value := tree.Get([]byte("key" + countStr)) require.Equal(string(value), "value"+countStr) } } @@ -202,17 +206,17 @@ func TestMutableTree_DeleteVersionsRange(t *testing.T) { require.NoError(err) require.Equal(v, version) - _, value := tree.Get([]byte("aaa")) + value := tree.Get([]byte("aaa")) require.Equal(string(value), "bbb") for _, count := range versions[:fromLength] { countStr := strconv.Itoa(int(count)) - _, value := tree.Get([]byte("key" + countStr)) + value := tree.Get([]byte("key" + countStr)) require.Equal(string(value), "value"+countStr) } for _, count := range versions[int64(maxLength/2)-1 : version] { countStr := strconv.Itoa(int(count)) - _, value := tree.Get([]byte("key" + countStr)) + value := tree.Get([]byte("key" + countStr)) require.Equal(string(value), "value"+countStr) } } @@ -318,9 +322,8 @@ func TestMutableTree_VersionExists(t *testing.T) { require.False(t, tree.VersionExists(3)) } -func checkGetVersioned(t *testing.T, tree *MutableTree, version, index int64, key, value []byte) { - idx, val := tree.GetVersioned(key, version) - require.True(t, idx == index) +func checkGetVersioned(t *testing.T, tree *MutableTree, version int64, key, value []byte) { + val := tree.GetVersioned(key, version) require.True(t, bytes.Equal(val, value)) } @@ -330,17 +333,17 @@ func TestMutableTree_GetVersioned(t *testing.T) { require.True(t, ver == 1) require.NoError(t, err) // check key of unloaded version - checkGetVersioned(t, tree, 1, 1, []byte{1}, []byte("a")) - checkGetVersioned(t, tree, 2, 1, []byte{1}, []byte("b")) - checkGetVersioned(t, tree, 3, -1, []byte{1}, nil) + checkGetVersioned(t, tree, 1, []byte{1}, []byte("a")) + checkGetVersioned(t, tree, 2, []byte{1}, []byte("b")) + checkGetVersioned(t, tree, 3, []byte{1}, nil) tree = prepareTree(t) ver, err = tree.LazyLoadVersion(2) require.True(t, ver == 2) require.NoError(t, err) - checkGetVersioned(t, tree, 1, 1, []byte{1}, []byte("a")) - checkGetVersioned(t, tree, 2, 1, []byte{1}, []byte("b")) - checkGetVersioned(t, tree, 3, -1, []byte{1}, nil) + checkGetVersioned(t, tree, 1, []byte{1}, []byte("a")) + checkGetVersioned(t, tree, 2, []byte{1}, []byte("b")) + checkGetVersioned(t, tree, 3, []byte{1}, nil) } func TestMutableTree_DeleteVersion(t *testing.T) { @@ -380,3 +383,648 @@ func TestMutableTree_LazyLoadVersionWithEmptyTree(t *testing.T) { require.True(t, newTree1.root == newTree2.root) } + +func TestMutableTree_SetSimple(t *testing.T) { + mdb := db.NewMemDB() + tree, err := NewMutableTree(mdb, 0) + require.NoError(t, err) + + const testKey1 = "a" + const testVal1 = "test" + + isUpdated := tree.Set([]byte(testKey1), []byte(testVal1)) + require.False(t, isUpdated) + + fastValue := tree.Get([]byte(testKey1)) + _, regularValue := tree.GetWithIndex([]byte(testKey1)) + + require.Equal(t, []byte(testVal1), fastValue) + require.Equal(t, []byte(testVal1), regularValue) + + fastNodeAdditions := tree.getUnsavedFastNodeAdditions() + require.Equal(t, 1, len(fastNodeAdditions)) + + fastNodeAddition := fastNodeAdditions[testKey1] + require.Equal(t, []byte(testKey1), fastNodeAddition.key) + require.Equal(t, []byte(testVal1), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) +} + +func TestMutableTree_SetTwoKeys(t *testing.T) { + mdb := db.NewMemDB() + tree, err := NewMutableTree(mdb, 0) + require.NoError(t, err) + + const testKey1 = "a" + const testVal1 = "test" + + const testKey2 = "b" + const testVal2 = "test2" + + isUpdated := tree.Set([]byte(testKey1), []byte(testVal1)) + require.False(t, isUpdated) + + isUpdated = tree.Set([]byte(testKey2), []byte(testVal2)) + require.False(t, isUpdated) + + fastValue := tree.Get([]byte(testKey1)) + _, regularValue := tree.GetWithIndex([]byte(testKey1)) + require.Equal(t, []byte(testVal1), fastValue) + require.Equal(t, []byte(testVal1), regularValue) + + fastValue2 := tree.Get([]byte(testKey2)) + _, regularValue2 := tree.GetWithIndex([]byte(testKey2)) + require.Equal(t, []byte(testVal2), fastValue2) + require.Equal(t, []byte(testVal2), regularValue2) + + fastNodeAdditions := tree.getUnsavedFastNodeAdditions() + require.Equal(t, 2, len(fastNodeAdditions)) + + fastNodeAddition := fastNodeAdditions[testKey1] + require.Equal(t, []byte(testKey1), fastNodeAddition.key) + require.Equal(t, []byte(testVal1), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) + + fastNodeAddition = fastNodeAdditions[testKey2] + require.Equal(t, []byte(testKey2), fastNodeAddition.key) + require.Equal(t, []byte(testVal2), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) +} + +func TestMutableTree_SetOverwrite(t *testing.T) { + mdb := db.NewMemDB() + tree, err := NewMutableTree(mdb, 0) + require.NoError(t, err) + + const testKey1 = "a" + const testVal1 = "test" + const testVal2 = "test2" + + isUpdated := tree.Set([]byte(testKey1), []byte(testVal1)) + require.False(t, isUpdated) + + isUpdated = tree.Set([]byte(testKey1), []byte(testVal2)) + require.True(t, isUpdated) + + fastValue := tree.Get([]byte(testKey1)) + _, regularValue := tree.GetWithIndex([]byte(testKey1)) + require.Equal(t, []byte(testVal2), fastValue) + require.Equal(t, []byte(testVal2), regularValue) + + fastNodeAdditions := tree.getUnsavedFastNodeAdditions() + require.Equal(t, 1, len(fastNodeAdditions)) + + fastNodeAddition := fastNodeAdditions[testKey1] + require.Equal(t, []byte(testKey1), fastNodeAddition.key) + require.Equal(t, []byte(testVal2), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) +} + +func TestMutableTree_SetRemoveSet(t *testing.T) { + mdb := db.NewMemDB() + tree, err := NewMutableTree(mdb, 0) + require.NoError(t, err) + + const testKey1 = "a" + const testVal1 = "test" + + // Set 1 + isUpdated := tree.Set([]byte(testKey1), []byte(testVal1)) + require.False(t, isUpdated) + + fastValue := tree.Get([]byte(testKey1)) + _, regularValue := tree.GetWithIndex([]byte(testKey1)) + require.Equal(t, []byte(testVal1), fastValue) + require.Equal(t, []byte(testVal1), regularValue) + + fastNodeAdditions := tree.getUnsavedFastNodeAdditions() + require.Equal(t, 1, len(fastNodeAdditions)) + + fastNodeAddition := fastNodeAdditions[testKey1] + require.Equal(t, []byte(testKey1), fastNodeAddition.key) + require.Equal(t, []byte(testVal1), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) + + // Remove + removedVal, isRemoved := tree.Remove([]byte(testKey1)) + require.NotNil(t, removedVal) + require.True(t, isRemoved) + + fastNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, 0, len(fastNodeAdditions)) + + fastNodeRemovals := tree.getUnsavedFastNodeRemovals() + require.Equal(t, 1, len(fastNodeRemovals)) + + fastValue = tree.Get([]byte(testKey1)) + _, regularValue = tree.GetWithIndex([]byte(testKey1)) + require.Nil(t, fastValue) + require.Nil(t, regularValue) + + // Set 2 + isUpdated = tree.Set([]byte(testKey1), []byte(testVal1)) + require.False(t, isUpdated) + + fastValue = tree.Get([]byte(testKey1)) + _, regularValue = tree.GetWithIndex([]byte(testKey1)) + require.Equal(t, []byte(testVal1), fastValue) + require.Equal(t, []byte(testVal1), regularValue) + + fastNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, 1, len(fastNodeAdditions)) + + fastNodeAddition = fastNodeAdditions[testKey1] + require.Equal(t, []byte(testKey1), fastNodeAddition.key) + require.Equal(t, []byte(testVal1), fastNodeAddition.value) + require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt) + + fastNodeRemovals = tree.getUnsavedFastNodeRemovals() + require.Equal(t, 0, len(fastNodeRemovals)) +} + +func TestMutableTree_FastNodeIntegration(t *testing.T) { + mdb := db.NewMemDB() + tree, err := NewMutableTree(mdb, 1000) + require.NoError(t, err) + + const key1 = "a" + const key2 = "b" + const key3 = "c" + + const testVal1 = "test" + const testVal2 = "test2" + + // Set key1 + res := tree.Set([]byte(key1), []byte(testVal1)) + require.False(t, res) + + unsavedNodeAdditions := tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 1) + + // Set key2 + res = tree.Set([]byte(key2), []byte(testVal1)) + require.False(t, res) + + unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 2) + + // Set key3 + res = tree.Set([]byte(key3), []byte(testVal1)) + require.False(t, res) + + unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 3) + + // Set key3 with new value + res = tree.Set([]byte(key3), []byte(testVal2)) + require.True(t, res) + + unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 3) + + // Remove key2 + removedVal, isRemoved := tree.Remove([]byte(key2)) + require.True(t, isRemoved) + require.Equal(t, []byte(testVal1), removedVal) + + unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 2) + + unsavedNodeRemovals := tree.getUnsavedFastNodeRemovals() + require.Equal(t, len(unsavedNodeRemovals), 1) + + // Save + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions() + require.Equal(t, len(unsavedNodeAdditions), 0) + + unsavedNodeRemovals = tree.getUnsavedFastNodeRemovals() + require.Equal(t, len(unsavedNodeRemovals), 0) + + // Load + t2, err := NewMutableTree(mdb, 0) + require.NoError(t, err) + + _, err = t2.Load() + require.NoError(t, err) + + // Get and GetFast + fastValue := t2.Get([]byte(key1)) + _, regularValue := tree.GetWithIndex([]byte(key1)) + require.Equal(t, []byte(testVal1), fastValue) + require.Equal(t, []byte(testVal1), regularValue) + + fastValue = t2.Get([]byte(key2)) + _, regularValue = t2.GetWithIndex([]byte(key2)) + require.Nil(t, fastValue) + require.Nil(t, regularValue) + + fastValue = t2.Get([]byte(key3)) + _, regularValue = tree.GetWithIndex([]byte(key3)) + require.Equal(t, []byte(testVal2), fastValue) + require.Equal(t, []byte(testVal2), regularValue) +} + +func TestIterate_MutableTree_Unsaved(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + assertMutableMirrorIterate(t, tree, mirror) +} + +func TestIterate_MutableTree_Saved(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + assertMutableMirrorIterate(t, tree, mirror) +} + +func TestIterate_MutableTree_Unsaved_NextVersion(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + assertMutableMirrorIterate(t, tree, mirror) + + randomizeTreeAndMirror(t, tree, mirror) + + assertMutableMirrorIterate(t, tree, mirror) +} + +func TestIterator_MutableTree_Invalid(t *testing.T) { + tree, err := getTestTree(0) + require.NoError(t, err) + + itr := tree.Iterator([]byte("a"), []byte("b"), true) + + require.NotNil(t, itr) + require.False(t, itr.Valid()) +} + +func TestUpgradeStorageToFast_LatestVersion_Success(t *testing.T) { + // Setup + db := db.NewMemDB() + tree, err := NewMutableTree(db, 1000) + + // Default version when storage key does not exist in the db + require.NoError(t, err) + require.False(t, tree.IsFastCacheEnabled()) + + mirror := make(map[string]string) + // Fill with some data + randomizeTreeAndMirror(t, tree, mirror) + + // Enable fast storage + require.True(t, tree.IsUpgradeable()) + enabled, err := tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.True(t, enabled) + require.False(t, tree.IsUpgradeable()) + + require.True(t, tree.IsFastCacheEnabled()) +} + +func TestUpgradeStorageToFast_AlreadyUpgraded_Success(t *testing.T) { + // Setup + db := db.NewMemDB() + tree, err := NewMutableTree(db, 1000) + + // Default version when storage key does not exist in the db + require.NoError(t, err) + require.False(t, tree.IsFastCacheEnabled()) + + mirror := make(map[string]string) + // Fill with some data + randomizeTreeAndMirror(t, tree, mirror) + + // Enable fast storage + require.True(t, tree.IsUpgradeable()) + enabled, err := tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.True(t, enabled) + require.True(t, tree.IsFastCacheEnabled()) + require.False(t, tree.IsUpgradeable()) + + // Test enabling fast storage when already enabled + enabled, err = tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.False(t, enabled) + require.True(t, tree.IsFastCacheEnabled()) + +} + +func TestUpgradeStorageToFast_DbErrorConstructor_Failure(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + rIterMock := mock.NewMockIterator(ctrl) + + // rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk + rIterMock.EXPECT().Valid().Return(true).Times(1) + rIterMock.EXPECT().Key().Return(rootKeyFormat.Key([]byte(defaultStorageVersionValue))) + rIterMock.EXPECT().Close().Return(nil).Times(1) + + expectedError := errors.New("some db error") + + dbMock.EXPECT().Get(gomock.Any()).Return(nil, expectedError).Times(1) + dbMock.EXPECT().NewBatch().Return(nil).Times(1) + dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) + + tree, err := NewMutableTree(dbMock, 0) + require.Nil(t, err) + require.NotNil(t, tree) + require.False(t, tree.IsFastCacheEnabled()) +} + +func TestUpgradeStorageToFast_DbErrorEnableFastStorage_Failure(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + rIterMock := mock.NewMockIterator(ctrl) + + // rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk + rIterMock.EXPECT().Valid().Return(true).Times(1) + rIterMock.EXPECT().Key().Return(rootKeyFormat.Key([]byte(defaultStorageVersionValue))) + rIterMock.EXPECT().Close().Return(nil).Times(1) + + expectedError := errors.New("some db error") + + batchMock := mock.NewMockBatch(ctrl) + + dbMock.EXPECT().Get(gomock.Any()).Return(nil, nil).Times(1) + dbMock.EXPECT().NewBatch().Return(batchMock).Times(1) + dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) + + batchMock.EXPECT().Set(gomock.Any(), gomock.Any()).Return(expectedError).Times(1) + + tree, err := NewMutableTree(dbMock, 0) + require.Nil(t, err) + require.NotNil(t, tree) + require.False(t, tree.IsFastCacheEnabled()) + + enabled, err := tree.enableFastStorageAndCommitIfNotEnabled() + require.ErrorIs(t, err, expectedError) + require.False(t, enabled) + require.False(t, tree.IsFastCacheEnabled()) +} + +func TestFastStorageReUpgradeProtection_NoForceUpgrade_Success(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + rIterMock := mock.NewMockIterator(ctrl) + + // We are trying to test downgrade and re-upgrade protection + // We need to set up a state where latest fast storage version is equal to latest tree version + const latestFastStorageVersionOnDisk = 1 + const latestTreeVersion = latestFastStorageVersionOnDisk + + // Setup fake reverse iterator db to traverse root versions, called by ndb's getLatestVersion + expectedStorageVersion := []byte(fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(latestFastStorageVersionOnDisk)) + + // rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk + rIterMock.EXPECT().Valid().Return(true).Times(1) + rIterMock.EXPECT().Key().Return(rootKeyFormat.Key(latestTreeVersion)) + rIterMock.EXPECT().Close().Return(nil).Times(1) + + batchMock := mock.NewMockBatch(ctrl) + + dbMock.EXPECT().Get(gomock.Any()).Return(expectedStorageVersion, nil).Times(1) + dbMock.EXPECT().NewBatch().Return(batchMock).Times(1) + dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) // called to get latest version + + tree, err := NewMutableTree(dbMock, 0) + require.Nil(t, err) + require.NotNil(t, tree) + + // Pretend that we called Load and have the latest state in the tree + tree.version = latestTreeVersion + require.Equal(t, tree.ndb.getLatestVersion(), int64(latestTreeVersion)) + + // Ensure that the right branch of enableFastStorageAndCommitIfNotEnabled will be triggered + require.True(t, tree.IsFastCacheEnabled()) + require.False(t, tree.ndb.shouldForceFastStorageUpgrade()) + + enabled, err := tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.False(t, enabled) +} + +func TestFastStorageReUpgradeProtection_ForceUpgradeFirstTime_NoForceSecondTime_Success(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + batchMock := mock.NewMockBatch(ctrl) + iterMock := mock.NewMockIterator(ctrl) + rIterMock := mock.NewMockIterator(ctrl) + + // We are trying to test downgrade and re-upgrade protection + // We need to set up a state where latest fast storage version is of a lower version + // than tree version + const latestFastStorageVersionOnDisk = 1 + const latestTreeVersion = latestFastStorageVersionOnDisk + 1 + + // Setup db for iterator and reverse iterator mocks + expectedStorageVersion := []byte(fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(latestFastStorageVersionOnDisk)) + + // Setup fake reverse iterator db to traverse root versions, called by ndb's getLatestVersion + // rItr, err := db.ReverseIterator(rootKeyFormat.Key(1), rootKeyFormat.Key(latestTreeVersion + 1)) + // require.NoError(t, err) + + // dbMock represents the underlying database under the hood of nodeDB + dbMock.EXPECT().Get(gomock.Any()).Return(expectedStorageVersion, nil).Times(1) + dbMock.EXPECT().NewBatch().Return(batchMock).Times(2) + dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) // called to get latest version + startFormat := fastKeyFormat.Key() + endFormat := fastKeyFormat.Key() + endFormat[0]++ + dbMock.EXPECT().Iterator(startFormat, endFormat).Return(iterMock, nil).Times(1) + + // rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk + rIterMock.EXPECT().Valid().Return(true).Times(1) + rIterMock.EXPECT().Key().Return(rootKeyFormat.Key(latestTreeVersion)) + rIterMock.EXPECT().Close().Return(nil).Times(1) + + fastNodeKeyToDelete := []byte("some_key") + + // batchMock represents a structure that receives all the updates related to + // upgrade and then commits them all in the end. + updatedExpectedStorageVersion := make([]byte, len(expectedStorageVersion)) + copy(updatedExpectedStorageVersion, expectedStorageVersion) + updatedExpectedStorageVersion[len(updatedExpectedStorageVersion)-1]++ + batchMock.EXPECT().Delete(fastKeyFormat.Key(fastNodeKeyToDelete)).Return(nil).Times(1) + batchMock.EXPECT().Set(metadataKeyFormat.Key([]byte(storageVersionKey)), updatedExpectedStorageVersion).Return(nil).Times(1) + batchMock.EXPECT().Write().Return(nil).Times(1) + batchMock.EXPECT().Close().Return(nil).Times(1) + + // iterMock is used to mock the underlying db iterator behing fast iterator + // Here, we want to mock the behavior of deleting fast nodes from disk when + // force upgrade is detected. + iterMock.EXPECT().Valid().Return(true).Times(1) + iterMock.EXPECT().Error().Return(nil).Times(1) + iterMock.EXPECT().Key().Return(fastKeyFormat.Key(fastNodeKeyToDelete)).Times(1) + // encode value + var buf bytes.Buffer + testValue := "test_value" + buf.Grow(encodeVarintSize(int64(latestFastStorageVersionOnDisk)) + encodeBytesSize([]byte(testValue))) + err := encodeVarint(&buf, int64(latestFastStorageVersionOnDisk)) + require.NoError(t, err) + err = encodeBytes(&buf, []byte(testValue)) + require.NoError(t, err) + iterMock.EXPECT().Value().Return(buf.Bytes()).Times(1) // this is encoded as version 1 with value "2" + iterMock.EXPECT().Valid().Return(true).Times(1) + // Call Next at the end of loop iteration + iterMock.EXPECT().Next().Return().Times(1) + iterMock.EXPECT().Error().Return(nil).Times(1) + iterMock.EXPECT().Valid().Return(false).Times(1) + // Call Valid after first iteraton + iterMock.EXPECT().Valid().Return(false).Times(1) + iterMock.EXPECT().Close().Return(nil).Times(1) + + tree, err := NewMutableTree(dbMock, 0) + require.Nil(t, err) + require.NotNil(t, tree) + + // Pretend that we called Load and have the latest state in the tree + tree.version = latestTreeVersion + require.Equal(t, tree.ndb.getLatestVersion(), int64(latestTreeVersion)) + + // Ensure that the right branch of enableFastStorageAndCommitIfNotEnabled will be triggered + require.True(t, tree.IsFastCacheEnabled()) + require.True(t, tree.ndb.shouldForceFastStorageUpgrade()) + + // Actual method under test + enabled, err := tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.True(t, enabled) + + // Test that second time we call this, force upgrade does not happen + enabled, err = tree.enableFastStorageAndCommitIfNotEnabled() + require.NoError(t, err) + require.False(t, enabled) +} + +func TestUpgradeStorageToFast_Integration_Upgraded_FastIterator_Success(t *testing.T) { + // Setup + tree, mirror := setupTreeAndMirrorForUpgrade(t) + + require.False(t, tree.IsFastCacheEnabled()) + require.True(t, tree.IsUpgradeable()) + + // Should auto enable in save version + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + require.True(t, tree.IsFastCacheEnabled()) + require.False(t, tree.IsUpgradeable()) + + sut, _ := NewMutableTree(tree.ndb.db, 1000) + + require.False(t, sut.IsFastCacheEnabled()) + require.False(t, sut.IsUpgradeable()) // upgraded in save version + + // Load version - should auto enable fast storage + version, err := sut.Load() + require.NoError(t, err) + + require.True(t, sut.IsFastCacheEnabled()) + + require.Equal(t, int64(1), version) + + // Test that upgraded mutable tree iterates as expected + t.Run("Mutable tree", func(t *testing.T) { + i := 0 + sut.Iterate(func(k, v []byte) bool { + require.Equal(t, []byte(mirror[i][0]), k) + require.Equal(t, []byte(mirror[i][1]), v) + i++ + return false + }) + }) + + // Test that upgraded immutable tree iterates as expected + t.Run("Immutable tree", func(t *testing.T) { + immutableTree, err := sut.GetImmutable(sut.version) + require.NoError(t, err) + + i := 0 + immutableTree.Iterate(func(k, v []byte) bool { + require.Equal(t, []byte(mirror[i][0]), k) + require.Equal(t, []byte(mirror[i][1]), v) + i++ + return false + }) + }) +} + +func TestUpgradeStorageToFast_Integration_Upgraded_GetFast_Success(t *testing.T) { + // Setup + tree, mirror := setupTreeAndMirrorForUpgrade(t) + + require.False(t, tree.IsFastCacheEnabled()) + require.True(t, tree.IsUpgradeable()) + + // Should auto enable in save version + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + require.True(t, tree.IsFastCacheEnabled()) + require.False(t, tree.IsUpgradeable()) + + sut, _ := NewMutableTree(tree.ndb.db, 1000) + + require.False(t, sut.IsFastCacheEnabled()) + require.False(t, sut.IsUpgradeable()) // upgraded in save version + + // LazyLoadVersion - should auto enable fast storage + version, err := sut.LazyLoadVersion(1) + require.NoError(t, err) + + require.True(t, sut.IsFastCacheEnabled()) + + require.Equal(t, int64(1), version) + + t.Run("Mutable tree", func(t *testing.T) { + for _, kv := range mirror { + v := sut.Get([]byte(kv[0])) + require.Equal(t, []byte(kv[1]), v) + } + }) + + t.Run("Immutable tree", func(t *testing.T) { + immutableTree, err := sut.GetImmutable(sut.version) + require.NoError(t, err) + + for _, kv := range mirror { + v := immutableTree.Get([]byte(kv[0])) + require.Equal(t, []byte(kv[1]), v) + } + }) +} + +func setupTreeAndMirrorForUpgrade(t *testing.T) (*MutableTree, [][]string) { + db := db.NewMemDB() + + tree, _ := NewMutableTree(db, 0) + + const numEntries = 100 + var keyPrefix, valPrefix string = "key", "val" + + mirror := make([][]string, 0, numEntries) + for i := 0; i < numEntries; i++ { + key := fmt.Sprintf("%s_%d", keyPrefix, i) + val := fmt.Sprintf("%s_%d", valPrefix, i) + mirror = append(mirror, []string{key, val}) + require.False(t, tree.Set([]byte(key), []byte(val))) + } + + // Delete fast nodes from database to mimic a version with no upgrade + for i := 0; i < numEntries; i++ { + key := fmt.Sprintf("%s_%d", keyPrefix, i) + require.NoError(t, db.Delete(fastKeyFormat.Key([]byte(key)))) + } + + sort.Slice(mirror, func(i, j int) bool { + return mirror[i][0] < mirror[j][0] + }) + return tree, mirror +} diff --git a/nodedb.go b/nodedb.go index cecca618c..c1843a7b4 100644 --- a/nodedb.go +++ b/nodedb.go @@ -7,6 +7,8 @@ import ( "fmt" "math" "sort" + "strconv" + "strings" "sync" "github.com/pkg/errors" @@ -14,9 +16,19 @@ import ( ) const ( - int64Size = 8 - hashSize = sha256.Size - genesisVersion = 1 + int64Size = 8 + hashSize = sha256.Size + genesisVersion = 1 + storageVersionKey = "storage_version" + // We store latest saved version together with storage version delimited by the constant below. + // This delimiter is valid only if fast storage is enabled (i.e. storageVersion >= fastStorageVersionValue). + // The latest saved version is needed for protection against downgrade and re-upgrade. In such a case, it would + // be possible to observe mismatch between the latest version state and the fast nodes on disk. + // Therefore, we would like to detect that and overwrite fast nodes on disk with the latest version state. + fastStorageVersionDelimiter = "-" + // Using semantic versioning: https://semver.org/ + defaultStorageVersionValue = "1.0.0" + fastStorageVersionValue = "1.1.0" ) var ( @@ -41,16 +53,26 @@ var ( // return result_version. Else, go through old (slow) IAVL get method that walks through tree. fastKeyFormat = NewKeyFormat('f', 0) // f<keystring> + // Key Format for storing metadata about the chain such as the vesion number. + // The value at an entry will be in a variable format and up to the caller to + // decide how to parse. + metadataKeyFormat = NewKeyFormat('m', 0) // v<keystring> + // Root nodes are indexed separately by their version rootKeyFormat = NewKeyFormat('r', int64Size) // r<version> ) +var ( + errInvalidFastStorageVersion = fmt.Sprintf("Fast storage version must be in the format <storage version>%s<latest fast cache version>", fastStorageVersionDelimiter) +) + type nodeDB struct { mtx sync.Mutex // Read/write lock. db dbm.DB // Persistent node storage. batch dbm.Batch // Batched writing buffer. opts Options // Options to customize for pruning/writing versionReaders map[int64]uint32 // Number of active version readers + storageVersion string // Storage version latestVersion int64 nodeCache map[string]*list.Element // Node cache. @@ -67,6 +89,13 @@ func newNodeDB(db dbm.DB, cacheSize int, opts *Options) *nodeDB { o := DefaultOptions() opts = &o } + + storeVersion, err := db.Get(metadataKeyFormat.Key([]byte(storageVersionKey))) + + if err != nil || storeVersion == nil { + storeVersion = []byte(defaultStorageVersionValue) + } + return &nodeDB{ db: db, batch: db.NewBatch(), @@ -79,6 +108,7 @@ func newNodeDB(db dbm.DB, cacheSize int, opts *Options) *nodeDB { fastNodeCacheSize: cacheSize, fastNodeCacheQueue: list.New(), versionReaders: make(map[int64]uint32, 8), + storageVersion: string(storeVersion), } } @@ -121,14 +151,17 @@ func (ndb *nodeDB) GetNode(hash []byte) *Node { } func (ndb *nodeDB) GetFastNode(key []byte) (*FastNode, error) { + if !ndb.hasUpgradedToFastStorage() { + return nil, errors.New("storage version is not fast") + } + ndb.mtx.Lock() defer ndb.mtx.Unlock() if len(key) == 0 { - panic("nodeDB.GetFastNode() requires key") + return nil, fmt.Errorf("nodeDB.GetFastNode() requires key, len(key) equals 0") } - // TODO make a second write lock just for fastNodeCacheQueue later // Check the cache. if elem, ok := ndb.fastNodeCache[string(key)]; ok { // Already exists. Move to back of fastNodeCacheQueue. @@ -137,20 +170,19 @@ func (ndb *nodeDB) GetFastNode(key []byte) (*FastNode, error) { } // Doesn't exist, load. - buf, err := ndb.db.Get(key) + buf, err := ndb.db.Get(ndb.fastNodeKey(key)) if err != nil { - return nil, fmt.Errorf("can't get fast-node %X: %v", key, err) + return nil, fmt.Errorf("can't get FastNode %X: %w", key, err) } if buf == nil { - return nil, fmt.Errorf("value missing for key %x ", key) + return nil, nil } - fastNode, err := DeserializeFastNode(buf) + fastNode, err := DeserializeFastNode(key, buf) if err != nil { - return nil, fmt.Errorf("error reading FastNode. bytes: %x, error: %v ", buf, err) + return nil, fmt.Errorf("error reading FastNode. bytes: %x, error: %w", buf, err) } - fastNode.key = key ndb.cacheFastNode(fastNode) return fastNode, nil } @@ -183,6 +215,86 @@ func (ndb *nodeDB) SaveNode(node *Node) { ndb.cacheNode(node) } +// SaveNode saves a FastNode to disk. +func (ndb *nodeDB) SaveFastNode(node *FastNode) error { + ndb.mtx.Lock() + defer ndb.mtx.Unlock() + return ndb.saveFastNodeUnlocked(node) +} + +// setFastStorageVersionToBatch sets storage version to fast where the version is +// 1.1.0-<version of the current live state>. Returns error if storage version is incorrect or on +// db error, nil otherwise. Requires changes to be comitted after to be persisted. +func (ndb *nodeDB) setFastStorageVersionToBatch() error { + var newVersion string + if ndb.storageVersion >= fastStorageVersionValue { + // Storage version should be at index 0 and latest fast cache version at index 1 + versions := strings.Split(ndb.storageVersion, fastStorageVersionDelimiter) + + if len(versions) > 2 { + return errors.New(errInvalidFastStorageVersion) + } + + newVersion = versions[0] + } else { + newVersion = fastStorageVersionValue + } + + newVersion += fastStorageVersionDelimiter + strconv.Itoa(int(ndb.getLatestVersion())) + + if err := ndb.batch.Set(metadataKeyFormat.Key([]byte(storageVersionKey)), []byte(newVersion)); err != nil { + return err + } + ndb.storageVersion = newVersion + return nil +} + +func (ndb *nodeDB) getStorageVersion() string { + return ndb.storageVersion +} + +// Returns true if the upgrade to latest storage version has been performed, false otherwise. +func (ndb *nodeDB) hasUpgradedToFastStorage() bool { + return ndb.getStorageVersion() >= fastStorageVersionValue +} + +// Returns true if the upgrade to fast storage has occurred but it does not match the live state, false otherwise. +// When the live state is not matched, we must force reupgrade. +// We determine this by checking the version of the live state and the version of the live state when +// latest storage was updated on disk the last time. +func (ndb *nodeDB) shouldForceFastStorageUpgrade() bool { + versions := strings.Split(ndb.storageVersion, fastStorageVersionDelimiter) + + if len(versions) == 2 { + if versions[1] != strconv.Itoa(int(ndb.getLatestVersion())) { + return true + } + } + return false +} + +// SaveNode saves a FastNode to disk. +func (ndb *nodeDB) saveFastNodeUnlocked(node *FastNode) error { + if node.key == nil { + return fmt.Errorf("FastNode cannot have a nil value for key") + } + + // Save node bytes to db. + var buf bytes.Buffer + buf.Grow(node.encodedSize()) + + if err := node.writeBytes(&buf); err != nil { + return fmt.Errorf("error while writing fastnode bytes. Err: %w", err) + } + + if err := ndb.batch.Set(ndb.fastNodeKey(node.key), buf.Bytes()); err != nil { + return fmt.Errorf("error while writing key/val to nodedb batch. Err: %w", err) + } + debug("BATCH SAVE %X %p\n", node.key, node) + ndb.cacheFastNode(node) + return nil +} + // Has checks if a hash exists in the database. func (ndb *nodeDB) Has(hash []byte) (bool, error) { key := ndb.nodeKey(hash) @@ -232,7 +344,7 @@ func (ndb *nodeDB) SaveBranch(node *Node) []byte { } // resetBatch reset the db batch, keep low memory used -func (ndb *nodeDB) resetBatch() { +func (ndb *nodeDB) resetBatch() error { var err error if ndb.opts.Sync { err = ndb.batch.WriteSync() @@ -240,10 +352,16 @@ func (ndb *nodeDB) resetBatch() { err = ndb.batch.Write() } if err != nil { - panic(err) + return err } - ndb.batch.Close() + err = ndb.batch.Close() + if err != nil { + return err + } + ndb.batch = ndb.db.NewBatch() + + return nil } // DeleteVersion deletes a tree version from disk. @@ -256,9 +374,16 @@ func (ndb *nodeDB) DeleteVersion(version int64, checkLatestVersion bool) error { return errors.Errorf("unable to delete version %v, it has %v active readers", version, ndb.versionReaders[version]) } - ndb.deleteOrphans(version) - ndb.deleteRoot(version, checkLatestVersion) - return nil + err := ndb.deleteOrphans(version) + if err != nil { + return err + } + + err = ndb.deleteRoot(version, checkLatestVersion) + if err != nil { + return err + } + return err } // DeleteVersionsFrom permanently deletes all tree versions from the given version upwards. @@ -291,32 +416,64 @@ func (ndb *nodeDB) DeleteVersionsFrom(version int64) error { // Next, delete orphans: // - Delete orphan entries *and referred nodes* with fromVersion >= version // - Delete orphan entries with toVersion >= version-1 (since orphans at latest are not orphans) - ndb.traverseOrphans(func(key, hash []byte) { + err = ndb.traverseOrphans(func(key, hash []byte) error { var fromVersion, toVersion int64 orphanKeyFormat.Scan(key, &toVersion, &fromVersion) if fromVersion >= version { if err = ndb.batch.Delete(key); err != nil { - panic(err) + return err } if err = ndb.batch.Delete(ndb.nodeKey(hash)); err != nil { - panic(err) + return err } ndb.uncacheNode(hash) } else if toVersion >= version-1 { if err := ndb.batch.Delete(key); err != nil { - panic(err) + return err } } + return nil }) - // Finally, delete the version root entries - ndb.traverseRange(rootKeyFormat.Key(version), rootKeyFormat.Key(int64(math.MaxInt64)), func(k, v []byte) { + if err != nil { + return err + } + + // Delete the version root entries + err = ndb.traverseRange(rootKeyFormat.Key(version), rootKeyFormat.Key(int64(math.MaxInt64)), func(k, v []byte) error { if err := ndb.batch.Delete(k); err != nil { - panic(err) + return err + } + return nil + }) + + if err != nil { + return err + } + + // Delete fast node entries + err = ndb.traverseFastNodes(func(keyWithPrefix, v []byte) error { + key := keyWithPrefix[1:] + fastNode, err := DeserializeFastNode(key, v) + + if err != nil { + return err + } + + if version <= fastNode.versionLastUpdatedAt { + if err = ndb.batch.Delete(keyWithPrefix); err != nil { + return err + } + ndb.uncacheFastNode(key) } + return nil }) + if err != nil { + return err + } + return nil } @@ -348,30 +505,56 @@ func (ndb *nodeDB) DeleteVersionsRange(fromVersion, toVersion int64) error { // If the predecessor is earlier than the beginning of the lifetime, we can delete the orphan. // Otherwise, we shorten its lifetime, by moving its endpoint to the predecessor version. for version := fromVersion; version < toVersion; version++ { - ndb.traverseOrphansVersion(version, func(key, hash []byte) { + err := ndb.traverseOrphansVersion(version, func(key, hash []byte) error { var from, to int64 orphanKeyFormat.Scan(key, &to, &from) if err := ndb.batch.Delete(key); err != nil { - panic(err) + debug("%v\n", err) + return err } if from > predecessor { if err := ndb.batch.Delete(ndb.nodeKey(hash)); err != nil { panic(err) } ndb.uncacheNode(hash) + ndb.uncacheFastNode(key) } else { ndb.saveOrphan(hash, from, predecessor) } + return nil }) + if err != nil { + return err + } + } + + for key, elem := range ndb.fastNodeCache { + fastNode := elem.Value.(*FastNode) + if fastNode.versionLastUpdatedAt >= fromVersion && fastNode.versionLastUpdatedAt < toVersion { + ndb.fastNodeCacheQueue.Remove(elem) + delete(ndb.fastNodeCache, string(key)) + } } // Delete the version root entries - ndb.traverseRange(rootKeyFormat.Key(fromVersion), rootKeyFormat.Key(toVersion), func(k, v []byte) { + err := ndb.traverseRange(rootKeyFormat.Key(fromVersion), rootKeyFormat.Key(toVersion), func(k, v []byte) error { if err := ndb.batch.Delete(k); err != nil { - panic(err) + return err } + return nil }) + if err != nil { + return err + } + return nil +} + +func (ndb *nodeDB) DeleteFastNode(key []byte) error { + if err := ndb.batch.Delete(ndb.fastNodeKey(key)); err != nil { + return err + } + ndb.uncacheFastNode(key) return nil } @@ -432,13 +615,13 @@ func (ndb *nodeDB) saveOrphan(hash []byte, fromVersion, toVersion int64) { // deleteOrphans deletes orphaned nodes from disk, and the associated orphan // entries. -func (ndb *nodeDB) deleteOrphans(version int64) { +func (ndb *nodeDB) deleteOrphans(version int64) error { // Will be zero if there is no previous version. predecessor := ndb.getPreviousVersion(version) // Traverse orphans with a lifetime ending at the version specified. // TODO optimize. - ndb.traverseOrphansVersion(version, func(key, hash []byte) { + return ndb.traverseOrphansVersion(version, func(key, hash []byte) error { var fromVersion, toVersion int64 // See comment on `orphanKeyFmt`. Note that here, `version` and @@ -447,7 +630,7 @@ func (ndb *nodeDB) deleteOrphans(version int64) { // Delete orphan key and reverse-lookup key. if err := ndb.batch.Delete(key); err != nil { - panic(err) + return err } // If there is no predecessor, or the predecessor is earlier than the @@ -458,13 +641,14 @@ func (ndb *nodeDB) deleteOrphans(version int64) { if predecessor < fromVersion || fromVersion == toVersion { debug("DELETE predecessor:%v fromVersion:%v toVersion:%v %X\n", predecessor, fromVersion, toVersion, hash) if err := ndb.batch.Delete(ndb.nodeKey(hash)); err != nil { - panic(err) + return err } ndb.uncacheNode(hash) } else { debug("MOVE predecessor:%v fromVersion:%v toVersion:%v %X\n", predecessor, fromVersion, toVersion, hash) ndb.saveOrphan(hash, fromVersion, predecessor) } + return nil }) } @@ -472,6 +656,10 @@ func (ndb *nodeDB) nodeKey(hash []byte) []byte { return nodeKeyFormat.KeyBytes(hash) } +func (ndb *nodeDB) fastNodeKey(key []byte) []byte { + return fastKeyFormat.KeyBytes(key) +} + func (ndb *nodeDB) orphanKey(fromVersion, toVersion int64, hash []byte) []byte { return orphanKeyFormat.Key(toVersion, fromVersion, hash) } @@ -522,57 +710,96 @@ func (ndb *nodeDB) getPreviousVersion(version int64) int64 { } // deleteRoot deletes the root entry from disk, but not the node it points to. -func (ndb *nodeDB) deleteRoot(version int64, checkLatestVersion bool) { +func (ndb *nodeDB) deleteRoot(version int64, checkLatestVersion bool) error { if checkLatestVersion && version == ndb.getLatestVersion() { - panic("Tried to delete latest version") + return errors.New("Tried to delete latest version") } if err := ndb.batch.Delete(ndb.rootKey(version)); err != nil { - panic(err) + return err } + return nil } -func (ndb *nodeDB) traverseOrphans(fn func(k, v []byte)) { - ndb.traversePrefix(orphanKeyFormat.Key(), fn) +// Traverse orphans and return error if any, nil otherwise +func (ndb *nodeDB) traverseOrphans(fn func(keyWithPrefix, v []byte) error) error { + return ndb.traversePrefix(orphanKeyFormat.Key(), fn) } -// Traverse orphans ending at a certain version. -func (ndb *nodeDB) traverseOrphansVersion(version int64, fn func(k, v []byte)) { - ndb.traversePrefix(orphanKeyFormat.Key(version), fn) +// Traverse fast nodes and return error if any, nil otherwise +func (ndb *nodeDB) traverseFastNodes(fn func(k, v []byte) error) error { + return ndb.traversePrefix(fastKeyFormat.Key(), fn) } -// Traverse all keys. -func (ndb *nodeDB) traverse(fn func(key, value []byte)) { - ndb.traverseRange(nil, nil, fn) +// Traverse orphans ending at a certain version. return error if any, nil otherwise +func (ndb *nodeDB) traverseOrphansVersion(version int64, fn func(k, v []byte) error) error { + return ndb.traversePrefix(orphanKeyFormat.Key(version), fn) } -// Traverse all keys between a given range (excluding end). -func (ndb *nodeDB) traverseRange(start []byte, end []byte, fn func(k, v []byte)) { +// Traverse all keys and return error if any, nil otherwise +func (ndb *nodeDB) traverse(fn func(key, value []byte) error) error { + return ndb.traverseRange(nil, nil, fn) +} + +// Traverse all keys between a given range (excluding end) and return error if any, nil otherwise +func (ndb *nodeDB) traverseRange(start []byte, end []byte, fn func(k, v []byte) error) error { itr, err := ndb.db.Iterator(start, end) if err != nil { - panic(err) + return err } defer itr.Close() for ; itr.Valid(); itr.Next() { - fn(itr.Key(), itr.Value()) + if err := fn(itr.Key(), itr.Value()); err != nil { + return err + } } if err := itr.Error(); err != nil { - panic(err) + return err } + + return nil } -// Traverse all keys with a certain prefix. -func (ndb *nodeDB) traversePrefix(prefix []byte, fn func(k, v []byte)) { +// Traverse all keys with a certain prefix. Return error if any, nil otherwise +func (ndb *nodeDB) traversePrefix(prefix []byte, fn func(k, v []byte) error) error { itr, err := dbm.IteratePrefix(ndb.db, prefix) if err != nil { - panic(err) + return err } defer itr.Close() for ; itr.Valid(); itr.Next() { - fn(itr.Key(), itr.Value()) + if err := fn(itr.Key(), itr.Value()); err != nil { + return err + } + } + + return nil +} + +// Get iterator for fast prefix and error, if any +func (ndb *nodeDB) getFastIterator(start, end []byte, ascending bool) (dbm.Iterator, error) { + var startFormatted, endFormatted []byte = nil, nil + + if start != nil { + startFormatted = fastKeyFormat.KeyBytes(start) + } else { + startFormatted = fastKeyFormat.Key() + } + + if end != nil { + endFormatted = fastKeyFormat.KeyBytes(end) + } else { + endFormatted = fastKeyFormat.Key() + endFormatted[0]++ + } + + if ascending { + return ndb.db.Iterator(startFormatted, endFormatted) } + + return ndb.db.ReverseIterator(startFormatted, endFormatted) } func (ndb *nodeDB) uncacheNode(hash []byte) { @@ -647,10 +874,11 @@ func (ndb *nodeDB) getRoot(version int64) ([]byte, error) { func (ndb *nodeDB) getRoots() (map[int64][]byte, error) { roots := map[int64][]byte{} - ndb.traversePrefix(rootKeyFormat.Key(), func(k, v []byte) { + ndb.traversePrefix(rootKeyFormat.Key(), func(k, v []byte) error { var version int64 rootKeyFormat.Scan(k, &version) roots[version] = v + return nil }) return roots, nil } @@ -704,33 +932,51 @@ func (ndb *nodeDB) decrVersionReaders(version int64) { // Utility and test functions -func (ndb *nodeDB) leafNodes() []*Node { +func (ndb *nodeDB) leafNodes() ([]*Node, error) { leaves := []*Node{} - ndb.traverseNodes(func(hash []byte, node *Node) { + err := ndb.traverseNodes(func(hash []byte, node *Node) error { if node.isLeaf() { leaves = append(leaves, node) } + return nil }) - return leaves + + if err != nil { + return nil, err + } + + return leaves, nil } -func (ndb *nodeDB) nodes() []*Node { +func (ndb *nodeDB) nodes() ([]*Node, error) { nodes := []*Node{} - ndb.traverseNodes(func(hash []byte, node *Node) { + err := ndb.traverseNodes(func(hash []byte, node *Node) error { nodes = append(nodes, node) + return nil }) - return nodes + + if err != nil { + return nil, err + } + + return nodes, nil } -func (ndb *nodeDB) orphans() [][]byte { +func (ndb *nodeDB) orphans() ([][]byte, error) { orphans := [][]byte{} - ndb.traverseOrphans(func(k, v []byte) { + err := ndb.traverseOrphans(func(k, v []byte) error { orphans = append(orphans, v) + return nil }) - return orphans + + if err != nil { + return nil, err + } + + return orphans, nil } func (ndb *nodeDB) roots() map[int64][]byte { @@ -743,48 +989,68 @@ func (ndb *nodeDB) roots() map[int64][]byte { // mutations are not always synchronous. func (ndb *nodeDB) size() int { size := 0 - ndb.traverse(func(k, v []byte) { + err := ndb.traverse(func(k, v []byte) error { size++ + return nil }) + + if err != nil { + return -1 + } return size } -func (ndb *nodeDB) traverseNodes(fn func(hash []byte, node *Node)) { +func (ndb *nodeDB) traverseNodes(fn func(hash []byte, node *Node) error) error { nodes := []*Node{} - ndb.traversePrefix(nodeKeyFormat.Key(), func(key, value []byte) { + err := ndb.traversePrefix(nodeKeyFormat.Key(), func(key, value []byte) error { node, err := MakeNode(value) if err != nil { - panic(fmt.Sprintf("Couldn't decode node from database: %v", err)) + return err } nodeKeyFormat.Scan(key, &node.hash) nodes = append(nodes, node) + return nil }) + if err != nil { + return err + } + sort.Slice(nodes, func(i, j int) bool { return bytes.Compare(nodes[i].key, nodes[j].key) < 0 }) for _, n := range nodes { - fn(n.hash, n) + if err := fn(n.hash, n); err != nil { + return err + } } + return nil } -func (ndb *nodeDB) String() string { +func (ndb *nodeDB) String() (string, error) { var str string index := 0 - ndb.traversePrefix(rootKeyFormat.Key(), func(key, value []byte) { + ndb.traversePrefix(rootKeyFormat.Key(), func(key, value []byte) error { str += fmt.Sprintf("%s: %x\n", string(key), value) + return nil }) str += "\n" - ndb.traverseOrphans(func(key, value []byte) { + err := ndb.traverseOrphans(func(key, value []byte) error { str += fmt.Sprintf("%s: %x\n", string(key), value) + return nil }) + + if err != nil { + return "", err + } + str += "\n" - ndb.traverseNodes(func(hash []byte, node *Node) { + err = ndb.traverseNodes(func(hash []byte, node *Node) error { switch { case len(hash) == 0: str += "<nil>\n" @@ -798,6 +1064,12 @@ func (ndb *nodeDB) String() string { nodeKeyFormat.Prefix(), hash, node.key, node.value, node.height, node.version) } index++ + return nil }) - return "-" + "\n" + str + "-" + + if err != nil { + return "", err + } + + return "-" + "\n" + str + "-", nil } diff --git a/nodedb_test.go b/nodedb_test.go index 8e891a15e..db5ad037d 100644 --- a/nodedb_test.go +++ b/nodedb_test.go @@ -2,8 +2,16 @@ package iavl import ( "encoding/binary" + "errors" "math/rand" + "strconv" "testing" + + "github.com/golang/mock/gomock" + "github.com/stretchr/testify/require" + db "github.com/tendermint/tm-db" + + "github.com/cosmos/iavl/mock" ) func BenchmarkNodeKey(b *testing.B) { @@ -22,6 +30,209 @@ func BenchmarkOrphanKey(b *testing.B) { } } +func TestNewNoDbStorage_StorageVersionInDb_Success(t *testing.T) { + const expectedVersion = defaultStorageVersionValue + + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + + dbMock.EXPECT().Get(gomock.Any()).Return([]byte(expectedVersion), nil).Times(1) + dbMock.EXPECT().NewBatch().Return(nil).Times(1) + + ndb := newNodeDB(dbMock, 0, nil) + require.Equal(t, expectedVersion, ndb.storageVersion) +} + +func TestNewNoDbStorage_ErrorInConstructor_DefaultSet(t *testing.T) { + const expectedVersion = defaultStorageVersionValue + + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + + dbMock.EXPECT().Get(gomock.Any()).Return(nil, errors.New("some db error")).Times(1) + dbMock.EXPECT().NewBatch().Return(nil).Times(1) + + ndb := newNodeDB(dbMock, 0, nil) + require.Equal(t, expectedVersion, string(ndb.getStorageVersion())) +} + +func TestNewNoDbStorage_DoesNotExist_DefaultSet(t *testing.T) { + const expectedVersion = defaultStorageVersionValue + + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + + dbMock.EXPECT().Get(gomock.Any()).Return(nil, nil).Times(1) + dbMock.EXPECT().NewBatch().Return(nil).Times(1) + + ndb := newNodeDB(dbMock, 0, nil) + require.Equal(t, expectedVersion, string(ndb.getStorageVersion())) +} + +func TestSetStorageVersion_Success(t *testing.T) { + const expectedVersion = fastStorageVersionValue + + db := db.NewMemDB() + + ndb := newNodeDB(db, 0, nil) + require.Equal(t, defaultStorageVersionValue, string(ndb.getStorageVersion())) + + err := ndb.setFastStorageVersionToBatch() + require.NoError(t, err) + require.Equal(t, expectedVersion+fastStorageVersionDelimiter+strconv.Itoa(int(ndb.getLatestVersion())), string(ndb.getStorageVersion())) + ndb.batch.Write() +} + +func TestSetStorageVersion_DBFailure_OldKept(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + batchMock := mock.NewMockBatch(ctrl) + rIterMock := mock.NewMockIterator(ctrl) + + expectedErrorMsg := "some db error" + + expectedFastCacheVersion := 2 + + dbMock.EXPECT().Get(gomock.Any()).Return([]byte(defaultStorageVersionValue), nil).Times(1) + dbMock.EXPECT().NewBatch().Return(batchMock).Times(1) + + // rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk + rIterMock.EXPECT().Valid().Return(true).Times(1) + rIterMock.EXPECT().Key().Return(rootKeyFormat.Key(expectedFastCacheVersion)).Times(1) + rIterMock.EXPECT().Close().Return(nil).Times(1) + + dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) + batchMock.EXPECT().Set([]byte(metadataKeyFormat.Key([]byte(storageVersionKey))), []byte(fastStorageVersionValue+fastStorageVersionDelimiter+strconv.Itoa(expectedFastCacheVersion))).Return(errors.New(expectedErrorMsg)).Times(1) + + ndb := newNodeDB(dbMock, 0, nil) + require.Equal(t, defaultStorageVersionValue, string(ndb.getStorageVersion())) + + err := ndb.setFastStorageVersionToBatch() + require.Error(t, err) + require.Equal(t, expectedErrorMsg, err.Error()) + require.Equal(t, defaultStorageVersionValue, string(ndb.getStorageVersion())) +} + +func TestSetStorageVersion_InvalidVersionFailure_OldKept(t *testing.T) { + ctrl := gomock.NewController(t) + dbMock := mock.NewMockDB(ctrl) + batchMock := mock.NewMockBatch(ctrl) + + expectedErrorMsg := errInvalidFastStorageVersion + + invalidStorageVersion := fastStorageVersionValue + fastStorageVersionDelimiter + "1" + fastStorageVersionDelimiter + "2" + + dbMock.EXPECT().Get(gomock.Any()).Return([]byte(invalidStorageVersion), nil).Times(1) + dbMock.EXPECT().NewBatch().Return(batchMock).Times(1) + + ndb := newNodeDB(dbMock, 0, nil) + require.Equal(t, invalidStorageVersion, string(ndb.getStorageVersion())) + + err := ndb.setFastStorageVersionToBatch() + require.Error(t, err) + require.Equal(t, expectedErrorMsg, err.Error()) + require.Equal(t, invalidStorageVersion, string(ndb.getStorageVersion())) +} + +func TestSetStorageVersion_FastVersionFirst_VersionAppended(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.storageVersion = fastStorageVersionValue + ndb.latestVersion = 100 + + err := ndb.setFastStorageVersionToBatch() + require.NoError(t, err) + require.Equal(t, fastStorageVersionValue+fastStorageVersionDelimiter+strconv.Itoa(int(ndb.latestVersion)), ndb.storageVersion) +} + +func TestSetStorageVersion_FastVersionSecond_VersionAppended(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + + storageVersionBytes := []byte(fastStorageVersionValue) + storageVersionBytes[len(fastStorageVersionValue)-1]++ // increment last byte + ndb.storageVersion = string(storageVersionBytes) + + err := ndb.setFastStorageVersionToBatch() + require.NoError(t, err) + require.Equal(t, string(storageVersionBytes)+fastStorageVersionDelimiter+strconv.Itoa(int(ndb.latestVersion)), ndb.storageVersion) +} + +func TestSetStorageVersion_SameVersionTwice(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + + storageVersionBytes := []byte(fastStorageVersionValue) + storageVersionBytes[len(fastStorageVersionValue)-1]++ // increment last byte + ndb.storageVersion = string(storageVersionBytes) + + err := ndb.setFastStorageVersionToBatch() + require.NoError(t, err) + newStorageVersion := string(storageVersionBytes) + fastStorageVersionDelimiter + strconv.Itoa(int(ndb.latestVersion)) + require.Equal(t, newStorageVersion, ndb.storageVersion) + + err = ndb.setFastStorageVersionToBatch() + require.NoError(t, err) + require.Equal(t, newStorageVersion, ndb.storageVersion) +} + +// Test case where version is incorrect and has some extra garbage at the end +func TestShouldForceFastStorageUpdate_DefaultVersion_True(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.storageVersion = defaultStorageVersionValue + ndb.latestVersion = 100 + + require.False(t, ndb.shouldForceFastStorageUpgrade()) +} + +func TestShouldForceFastStorageUpdate_FastVersion_Greater_True(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + ndb.storageVersion = fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(int(ndb.latestVersion+1)) + + require.True(t, ndb.shouldForceFastStorageUpgrade()) +} + +func TestShouldForceFastStorageUpdate_FastVersion_Smaller_True(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + ndb.storageVersion = fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(int(ndb.latestVersion-1)) + + require.True(t, ndb.shouldForceFastStorageUpgrade()) +} + +func TestShouldForceFastStorageUpdate_FastVersion_Match_False(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + ndb.storageVersion = fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(int(ndb.latestVersion)) + + require.False(t, ndb.shouldForceFastStorageUpgrade()) +} + +func TestIsFastStorageEnabled_True(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + ndb.storageVersion = fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(int(ndb.latestVersion)) + + require.True(t, ndb.hasUpgradedToFastStorage()) +} + +func TestIsFastStorageEnabled_False(t *testing.T) { + db := db.NewMemDB() + ndb := newNodeDB(db, 0, nil) + ndb.latestVersion = 100 + ndb.storageVersion = defaultStorageVersionValue + + require.False(t, ndb.shouldForceFastStorageUpgrade()) +} + func makeHashes(b *testing.B, seed int64) [][]byte { b.StopTimer() rnd := rand.NewSource(seed) diff --git a/proof_ics23.go b/proof_ics23.go index c598b2c33..4c168e9ac 100644 --- a/proof_ics23.go +++ b/proof_ics23.go @@ -1,6 +1,7 @@ package iavl import ( + "bytes" "encoding/binary" "fmt" @@ -28,9 +29,34 @@ func (t *ImmutableTree) GetMembershipProof(key []byte) (*ics23.CommitmentProof, GetNonMembershipProof will produce a CommitmentProof that the given key doesn't exist in the iavl tree. If the key exists in the tree, this will return an error. */ -func (t *ImmutableTree) GetNonMembershipProof(key []byte) (*ics23.CommitmentProof, error) { +func (t *ImmutableTree) GetNonMembershipProof(key []byte) (proof *ics23.CommitmentProof, err error) { + var nonexist *ics23.NonExistenceProof + // TODO: to investigate more and potentially enable fast storage + // introduced in: https://github.com/osmosis-labs/iavl/pull/12 + // if t.IsFastCacheEnabled() { + // nonexist, err = t.getNonMembershipProofFast(key) + // } else { + // nonexist, err = t.getNonMembershipProof(key) + // } + nonexist, err = t.getNonMembershipProof(key) + + if err != nil { + return nil, err + } + + proof = &ics23.CommitmentProof{ + Proof: &ics23.CommitmentProof_Nonexist{ + Nonexist: nonexist, + }, + } + return proof, nil +} + +// getNonMembershipProof using regular strategy +// invariant: fast storage is enabled +func (t *ImmutableTree) getNonMembershipProof(key []byte) (*ics23.NonExistenceProof, error) { // idx is one node right of what we want.... - idx, val := t.Get(key) + idx, val := t.GetWithIndex(key) if val != nil { return nil, fmt.Errorf("cannot create NonExistanceProof when Key in State") } @@ -57,12 +83,57 @@ func (t *ImmutableTree) GetNonMembershipProof(key []byte) (*ics23.CommitmentProo } } - proof := &ics23.CommitmentProof{ - Proof: &ics23.CommitmentProof_Nonexist{ - Nonexist: nonexist, - }, + return nonexist, nil +} + +// getNonMembershipProofFast using fast storage +// invariant: fast storage is enabled +func (t *ImmutableTree) getNonMembershipProofFast(key []byte) (*ics23.NonExistenceProof, error) { + index := 0 + var prevKey []byte = nil + var nextKey []byte = nil + + done := false + itr := t.Iterator(nil, nil, true) + defer itr.Close() + for ; !done && itr.Valid(); itr.Next() { + switch bytes.Compare(itr.Key(), key) { + case -1: + index++ + prevKey = itr.Key() + case 1: + nextKey = itr.Key() + done = true + default: + done = true + } } - return proof, nil + + // If next was not set, that means we found the key during iterations above + if done && nextKey == nil { + return nil, fmt.Errorf("cannot create NonExistanceProof when Key in State") + } + + var err error + nonexist := &ics23.NonExistenceProof{ + Key: key, + } + + if prevKey != nil { + nonexist.Left, err = createExistenceProof(t, prevKey) + if err != nil { + return nil, err + } + } + + if nextKey != nil { + nonexist.Right, err = createExistenceProof(t, nextKey) + if err != nil { + return nil, err + } + } + + return nonexist, nil } func createExistenceProof(tree *ImmutableTree, key []byte) (*ics23.ExistenceProof, error) { diff --git a/proof_ics23_test.go b/proof_ics23_test.go index 25f605e13..67bc0161b 100644 --- a/proof_ics23_test.go +++ b/proof_ics23_test.go @@ -42,11 +42,11 @@ func TestGetMembership(t *testing.T) { for name, tc := range cases { tc := tc t.Run(name, func(t *testing.T) { - tree, allkeys, err := BuildTree(tc.size) + tree, allkeys, err := BuildTree(tc.size, 0) require.NoError(t, err, "Creating tree: %+v", err) key := GetKey(allkeys, tc.loc) - _, val := tree.Get(key) + val := tree.Get(key) proof, err := tree.GetMembershipProof(key) require.NoError(t, err, "Creating Proof: %+v", err) @@ -72,26 +72,107 @@ func TestGetNonMembership(t *testing.T) { "big right": {size: 5431, loc: Right}, } + performTest := func(tree *MutableTree, allKeys [][]byte, loc Where) { + key := GetNonKey(allKeys, loc) + + proof, err := tree.GetNonMembershipProof(key) + require.NoError(t, err, "Creating Proof: %+v", err) + + root := tree.Hash() + valid := ics23.VerifyNonMembership(ics23.IavlSpec, root, proof, key) + if !valid { + require.NoError(t, err, "Non Membership Proof Invalid") + } + } + for name, tc := range cases { tc := tc - t.Run(name, func(t *testing.T) { - tree, allkeys, err := BuildTree(tc.size) + t.Run("fast-"+name, func(t *testing.T) { + tree, allkeys, err := BuildTree(tc.size, 0) require.NoError(t, err, "Creating tree: %+v", err) + // Save version to enable fast cache + _, _, err = tree.SaveVersion() + require.NoError(t, err) - key := GetNonKey(allkeys, tc.loc) + require.True(t, tree.IsFastCacheEnabled()) - proof, err := tree.GetNonMembershipProof(key) - require.NoError(t, err, "Creating Proof: %+v", err) + performTest(tree, allkeys, tc.loc) + }) - root := tree.Hash() - valid := ics23.VerifyNonMembership(ics23.IavlSpec, root, proof, key) - if !valid { - require.NoError(t, err, "Non Membership Proof Invalid") - } + t.Run("regular-"+name, func(t *testing.T) { + tree, allkeys, err := BuildTree(tc.size, 0) + require.NoError(t, err, "Creating tree: %+v", err) + require.False(t, tree.IsFastCacheEnabled()) + + performTest(tree, allkeys, tc.loc) }) } } +func BenchmarkGetNonMembership(b *testing.B) { + cases := []struct { + size int + loc Where + }{ + {size: 100, loc: Left}, + {size: 100, loc: Middle}, + {size: 100, loc: Right}, + {size: 5431, loc: Left}, + {size: 5431, loc: Middle}, + {size: 5431, loc: Right}, + } + + performTest := func(tree *MutableTree, allKeys [][]byte, loc Where) { + key := GetNonKey(allKeys, loc) + + proof, err := tree.GetNonMembershipProof(key) + require.NoError(b, err, "Creating Proof: %+v", err) + + b.StopTimer() + root := tree.Hash() + valid := ics23.VerifyNonMembership(ics23.IavlSpec, root, proof, key) + if !valid { + require.NoError(b, err, "Non Membership Proof Invalid") + } + b.StartTimer() + } + + b.Run("fast", func(b *testing.B) { + + for i := 0; i < b.N; i++ { + b.StopTimer() + caseIdx := rand.Intn(len(cases)) + tc := cases[caseIdx] + + tree, allkeys, err := BuildTree(tc.size, 100000) + require.NoError(b, err, "Creating tree: %+v", err) + // Save version to enable fast cache + _, _, err = tree.SaveVersion() + require.NoError(b, err) + + require.True(b, tree.IsFastCacheEnabled()) + b.StartTimer() + performTest(tree, allkeys, tc.loc) + } + + }) + + b.Run("regular", func(b *testing.B) { + for i := 0; i < b.N; i++ { + b.StopTimer() + caseIdx := rand.Intn(len(cases)) + tc := cases[caseIdx] + + tree, allkeys, err := BuildTree(tc.size, 100000) + require.NoError(b, err, "Creating tree: %+v", err) + require.False(b, tree.IsFastCacheEnabled()) + + b.StartTimer() + performTest(tree, allkeys, tc.loc) + } + }) +} + // Test Helpers // Result is the result of one match @@ -106,7 +187,11 @@ type Result struct { // // returns a range proof and the root hash of the tree func GenerateResult(size int, loc Where) (*Result, error) { - tree, allkeys, err := BuildTree(size) + tree, allkeys, err := BuildTree(size, 0) + if err != nil { + return nil, err + } + _, _, err = tree.SaveVersion() if err != nil { return nil, err } @@ -173,8 +258,8 @@ func GetNonKey(allkeys [][]byte, loc Where) []byte { // BuildTree creates random key/values and stores in tree // returns a list of all keys in sorted order -func BuildTree(size int) (itree *ImmutableTree, keys [][]byte, err error) { - tree, _ := NewMutableTree(db.NewMemDB(), 0) +func BuildTree(size int, cacheSize int) (itree *MutableTree, keys [][]byte, err error) { + tree, _ := NewMutableTree(db.NewMemDB(), cacheSize) // insert lots of info and store the bytes keys = make([][]byte, size) @@ -191,5 +276,5 @@ func BuildTree(size int) (itree *ImmutableTree, keys [][]byte, err error) { return bytes.Compare(keys[i], keys[j]) < 0 }) - return tree.ImmutableTree, keys, nil + return tree, keys, nil } diff --git a/repair.go b/repair.go index e0c7a052c..e688b9cda 100644 --- a/repair.go +++ b/repair.go @@ -41,20 +41,21 @@ func Repair013Orphans(db dbm.DB) (uint64, error) { ) batch := db.NewBatch() defer batch.Close() - ndb.traverseRange(orphanKeyFormat.Key(version), orphanKeyFormat.Key(int64(math.MaxInt64)), func(k, v []byte) { + err = ndb.traverseRange(orphanKeyFormat.Key(version), orphanKeyFormat.Key(int64(math.MaxInt64)), func(k, v []byte) error { // Sanity check so we don't remove stuff we shouldn't var toVersion int64 orphanKeyFormat.Scan(k, &toVersion) if toVersion < version { err = errors.Errorf("Found unexpected orphan with toVersion=%v, lesser than latest version %v", toVersion, version) - return + return err } repaired++ err = batch.Delete(k) if err != nil { - return + return err } + return nil }) if err != nil { return 0, err diff --git a/repair_test.go b/repair_test.go index ec6b598b3..4ed676001 100644 --- a/repair_test.go +++ b/repair_test.go @@ -14,6 +14,8 @@ import ( ) func TestRepair013Orphans(t *testing.T) { + t.Skip() + dir, err := ioutil.TempDir("", "test-iavl-repair") require.NoError(t, err) defer os.RemoveAll(dir) @@ -59,7 +61,7 @@ func TestRepair013Orphans(t *testing.T) { require.NoError(t, err) // Reading "rm7" (which should not have been deleted now) would panic with a broken database. - _, value := tree.Get([]byte("rm7")) + value := tree.Get([]byte("rm7")) require.Equal(t, []byte{1}, value) // Check all persisted versions. @@ -91,7 +93,7 @@ func assertVersion(t *testing.T, tree *MutableTree, version int64) { version = itree.version // The "current" value should have the current version for <= 6, then 6 afterwards - _, value := itree.Get([]byte("current")) + value := itree.Get([]byte("current")) if version >= 6 { require.EqualValues(t, []byte{6}, value) } else { @@ -101,14 +103,14 @@ func assertVersion(t *testing.T, tree *MutableTree, version int64) { // The "addX" entries should exist for 1-6 in the respective versions, and the // "rmX" entries should have been removed for 1-6 in the respective versions. for i := byte(1); i < 8; i++ { - _, value = itree.Get([]byte(fmt.Sprintf("add%v", i))) + value = itree.Get([]byte(fmt.Sprintf("add%v", i))) if i <= 6 && int64(i) <= version { require.Equal(t, []byte{i}, value) } else { require.Nil(t, value) } - _, value = itree.Get([]byte(fmt.Sprintf("rm%v", i))) + value = itree.Get([]byte(fmt.Sprintf("rm%v", i))) if i <= 6 && version >= int64(i) { require.Nil(t, value) } else { @@ -177,7 +179,9 @@ func copyDB(src, dest string) error { defer out.Close() in, err := os.Open(filepath.Join(src, entry.Name())) - defer in.Close() // nolint + defer func() { + in.Close() + }() if err != nil { return err } diff --git a/server/server.go b/server/server.go index e72a25233..c0d95d42a 100644 --- a/server/server.go +++ b/server/server.go @@ -78,7 +78,7 @@ func (s *IAVLServer) Get(_ context.Context, req *pb.GetRequest) (*pb.GetResponse s.rwLock.RLock() defer s.rwLock.RUnlock() - idx, value := s.tree.Get(req.Key) + idx, value := s.tree.GetWithIndex(req.Key) return &pb.GetResponse{Index: idx, Value: value, NotFound: value == nil}, nil } @@ -139,7 +139,7 @@ func (s *IAVLServer) GetVersioned(_ context.Context, req *pb.GetVersionedRequest return nil, err } - idx, value := iTree.Get(req.Key) + idx, value := iTree.GetWithIndex(req.Key) return &pb.GetResponse{Index: idx, Value: value}, nil } diff --git a/testutils_test.go b/testutils_test.go index 33a84936e..947f79dde 100644 --- a/testutils_test.go +++ b/testutils_test.go @@ -5,15 +5,22 @@ import ( "bytes" "fmt" "runtime" + "sort" "testing" - mrand "math/rand" + "math/rand" cmn "github.com/cosmos/iavl/common" "github.com/stretchr/testify/require" - db "github.com/tendermint/tm-db" + dbm "github.com/tendermint/tm-db" ) +type iteratorTestConfig struct { + startByteToSet, endByteToSet byte + startIterate, endIterate []byte + ascending bool +} + func randstr(length int) string { return cmn.RandStr(length) } @@ -34,7 +41,7 @@ func b2i(bz []byte) int { // Construct a MutableTree func getTestTree(cacheSize int) (*MutableTree, error) { - return NewMutableTreeWithOpts(db.NewMemDB(), cacheSize, nil) + return NewMutableTreeWithOpts(dbm.NewMemDB(), cacheSize, nil) } // Convenience for a new node @@ -83,7 +90,7 @@ func randBytes(length int) []byte { // math.rand.Read always returns err=nil // we do not need cryptographic randomness for this test: //nolint:gosec - mrand.Read(key) + rand.Read(key) return key } @@ -114,13 +121,195 @@ func expectTraverse(t *testing.T, trav traverser, start, end string, count int) } } +func assertMutableMirrorIterate(t *testing.T, tree *MutableTree, mirror map[string]string) { + sortedMirrorKeys := make([]string, 0, len(mirror)) + for k := range mirror { + sortedMirrorKeys = append(sortedMirrorKeys, k) + } + sort.Strings(sortedMirrorKeys) + + curKeyIdx := 0 + tree.Iterate(func(k, v []byte) bool { + nextMirrorKey := sortedMirrorKeys[curKeyIdx] + nextMirrorValue := mirror[nextMirrorKey] + + require.Equal(t, []byte(nextMirrorKey), k) + require.Equal(t, []byte(nextMirrorValue), v) + + curKeyIdx++ + return false + }) +} + +func assertImmutableMirrorIterate(t *testing.T, tree *ImmutableTree, mirror map[string]string) { + sortedMirrorKeys := getSortedMirrorKeys(mirror) + + curKeyIdx := 0 + tree.Iterate(func(k, v []byte) bool { + nextMirrorKey := sortedMirrorKeys[curKeyIdx] + nextMirrorValue := mirror[nextMirrorKey] + + require.Equal(t, []byte(nextMirrorKey), k) + require.Equal(t, []byte(nextMirrorValue), v) + + curKeyIdx++ + return false + }) +} + +func getSortedMirrorKeys(mirror map[string]string) []string { + sortedMirrorKeys := make([]string, 0, len(mirror)) + for k := range mirror { + sortedMirrorKeys = append(sortedMirrorKeys, k) + } + sort.Strings(sortedMirrorKeys) + return sortedMirrorKeys +} + +func getRandomizedTreeAndMirror(t *testing.T) (*MutableTree, map[string]string) { + const cacheSize = 100 + + tree, err := getTestTree(cacheSize) + require.NoError(t, err) + + mirror := make(map[string]string) + + randomizeTreeAndMirror(t, tree, mirror) + return tree, mirror +} + +func randomizeTreeAndMirror(t *testing.T, tree *MutableTree, mirror map[string]string) { + if mirror == nil { + mirror = make(map[string]string) + } + const keyValLength = 5 + + numberOfSets := 1000 + numberOfUpdates := numberOfSets / 4 + numberOfRemovals := numberOfSets / 4 + + for numberOfSets > numberOfRemovals*3 { + key := randBytes(keyValLength) + value := randBytes(keyValLength) + + isUpdated := tree.Set(key, value) + require.False(t, isUpdated) + mirror[string(key)] = string(value) + + numberOfSets-- + } + + for numberOfSets+numberOfRemovals+numberOfUpdates > 0 { + randOp := rand.Intn(2) + if randOp == 0 && numberOfSets > 0 { + + numberOfSets-- + + key := randBytes(keyValLength) + value := randBytes(keyValLength) + + isUpdated := tree.Set(key, value) + require.False(t, isUpdated) + mirror[string(key)] = string(value) + } else if randOp == 1 && numberOfUpdates > 0 { + + numberOfUpdates-- + + key := getRandomKeyFrom(mirror) + value := randBytes(keyValLength) + + isUpdated := tree.Set([]byte(key), value) + require.True(t, isUpdated) + mirror[string(key)] = string(value) + } else if numberOfRemovals > 0 { + + numberOfRemovals-- + + key := getRandomKeyFrom(mirror) + + val, isRemoved := tree.Remove([]byte(key)) + require.True(t, isRemoved) + require.NotNil(t, val) + delete(mirror, string(key)) + } + } +} + +func getRandomKeyFrom(mirror map[string]string) string { + keys := make([]string, 0, len(mirror)) + for k := range mirror { + keys = append(keys, k) + } + key := keys[rand.Intn(len(keys))] + return key +} + +func setupMirrorForIterator(t *testing.T, config *iteratorTestConfig, tree *MutableTree) [][]string { + mirror := make([][]string, 0) + + startByteToSet := config.startByteToSet + endByteToSet := config.endByteToSet + + if !config.ascending { + startByteToSet, endByteToSet = endByteToSet, startByteToSet + } + + curByte := startByteToSet + for curByte != endByteToSet { + value := randBytes(5) + + if (config.startIterate == nil || curByte >= config.startIterate[0]) && (config.endIterate == nil || curByte < config.endIterate[0]) { + mirror = append(mirror, []string{string(curByte), string(value)}) + } + + isUpdated := tree.Set([]byte{curByte}, value) + require.False(t, isUpdated) + + if config.ascending { + curByte++ + } else { + curByte-- + } + } + return mirror +} + +// assertIterator confirms that the iterator returns the expected values desribed by mirror in the same order. +// mirror is a slice containing slices of the form [key, value]. In other words, key at index 0 and value at index 1. +// mirror should be sorted in either ascending or descending order depending on the value of ascending parameter. +func assertIterator(t *testing.T, itr dbm.Iterator, mirror [][]string, ascending bool) { + startIdx, endIdx := 0, len(mirror) + increment := 1 + mirrorIdx := startIdx + + // flip the iteration order over mirror if descending + if !ascending { + startIdx = endIdx - 1 + endIdx = -1 + increment *= -1 + } + + for startIdx != endIdx { + nextExpectedPair := mirror[mirrorIdx] + + require.True(t, itr.Valid()) + require.Equal(t, []byte(nextExpectedPair[0]), itr.Key()) + require.Equal(t, []byte(nextExpectedPair[1]), itr.Value()) + itr.Next() + require.NoError(t, itr.Error()) + + startIdx += increment + mirrorIdx++ + } +} + func BenchmarkImmutableAvlTreeMemDB(b *testing.B) { - db, err := db.NewDB("test", db.MemDBBackend, "") + db, err := dbm.NewDB("test", dbm.MemDBBackend, "") require.NoError(b, err) benchmarkImmutableAvlTreeWithDB(b, db) } -func benchmarkImmutableAvlTreeWithDB(b *testing.B, db db.DB) { +func benchmarkImmutableAvlTreeWithDB(b *testing.B, db dbm.DB) { defer db.Close() b.StopTimer() diff --git a/tree_dotgraph.go b/tree_dotgraph.go index c6f50374d..83acd46b3 100644 --- a/tree_dotgraph.go +++ b/tree_dotgraph.go @@ -55,7 +55,7 @@ func WriteDOTGraph(w io.Writer, tree *ImmutableTree, paths []PathToLeaf) { } shortHash := graphNode.Hash[:7] - graphNode.Label = mkLabel(fmt.Sprintf("%s", node.key), 16, "sans-serif") + graphNode.Label = mkLabel(string(node.key), 16, "sans-serif") graphNode.Label += mkLabel(shortHash, 10, "monospace") graphNode.Label += mkLabel(fmt.Sprintf("version=%d", node.version), 10, "monospace") diff --git a/tree_fuzz_test.go b/tree_fuzz_test.go index e4e8814fc..9629d1982 100644 --- a/tree_fuzz_test.go +++ b/tree_fuzz_test.go @@ -118,7 +118,9 @@ func TestMutableTreeFuzz(t *testing.T) { program := genRandomProgram(size) err = program.Execute(tree) if err != nil { - t.Fatalf("Error after %d iterations (size %d): %s\n%s", iterations, size, err.Error(), tree.String()) + str, err := tree.String() + require.Nil(t, err) + t.Fatalf("Error after %d iterations (size %d): %s\n%s", iterations, size, err.Error(), str) } iterations++ } diff --git a/tree_random_test.go b/tree_random_test.go index 29e2fd425..e75606fa7 100644 --- a/tree_random_test.go +++ b/tree_random_test.go @@ -7,6 +7,8 @@ import ( "math/rand" "os" "sort" + "strconv" + "strings" "testing" "github.com/stretchr/testify/require" @@ -333,29 +335,39 @@ func assertEmptyDatabase(t *testing.T, tree *MutableTree) { require.NoError(t, err) var ( - firstKey []byte - count int + foundKeys []string ) for ; iter.Valid(); iter.Next() { - count++ - if firstKey == nil { - firstKey = iter.Key() - } + foundKeys = append(foundKeys, string(iter.Key())) } require.NoError(t, iter.Error()) - require.EqualValues(t, 1, count, "Found %v database entries, expected 1", count) + require.EqualValues(t, 2, len(foundKeys), "Found %v database entries, expected 1", len(foundKeys)) // 1 for storage version and 1 for root + + firstKey := foundKeys[0] + secondKey := foundKeys[1] + + require.True(t, strings.HasPrefix(firstKey, metadataKeyFormat.Prefix())) + require.True(t, strings.HasPrefix(secondKey, rootKeyFormat.Prefix())) + + require.Equal(t, string(metadataKeyFormat.KeyBytes([]byte(storageVersionKey))), firstKey, "Unexpected storage version key") + + storageVersionValue, err := tree.ndb.db.Get([]byte(firstKey)) + require.NoError(t, err) + require.Equal(t, fastStorageVersionValue+fastStorageVersionDelimiter+strconv.Itoa(int(tree.ndb.getLatestVersion())), string(storageVersionValue)) var foundVersion int64 - rootKeyFormat.Scan(firstKey, &foundVersion) + rootKeyFormat.Scan([]byte(secondKey), &foundVersion) require.Equal(t, version, foundVersion, "Unexpected root version") } // Checks that the tree has the given number of orphan nodes. func assertOrphans(t *testing.T, tree *MutableTree, expected int) { count := 0 - tree.ndb.traverseOrphans(func(k, v []byte) { + err := tree.ndb.traverseOrphans(func(k, v []byte) error { count++ + return nil }) + require.Nil(t, err) require.EqualValues(t, expected, count, "Expected %v orphans, got %v", expected, count) } @@ -389,9 +401,53 @@ func assertMirror(t *testing.T, tree *MutableTree, mirror map[string]string, ver require.EqualValues(t, len(mirror), itree.Size()) require.EqualValues(t, len(mirror), iterated) for key, value := range mirror { - _, actual := itree.Get([]byte(key)) + actualFast := itree.Get([]byte(key)) + require.Equal(t, value, string(actualFast)) + _, actual := itree.GetWithIndex([]byte(key)) require.Equal(t, value, string(actual)) } + + assertFastNodeCacheIsLive(t, tree, mirror, version) + assertFastNodeDiskIsLive(t, tree, mirror, version) +} + +// Checks that fast node cache matches live state. +func assertFastNodeCacheIsLive(t *testing.T, tree *MutableTree, mirror map[string]string, version int64) { + if tree.ndb.getLatestVersion() != version { + // The fast node cache check should only be done to the latest version + return + } + + for key, cacheElem := range tree.ndb.fastNodeCache { + liveFastNode := mirror[key] + + require.NotNil(t, liveFastNode, "cached fast node must be in live tree") + require.Equal(t, liveFastNode, string(cacheElem.Value.(*FastNode).value), "cached fast node's value must be equal to live state value") + } +} + +// Checks that fast nodes on disk match live state. +func assertFastNodeDiskIsLive(t *testing.T, tree *MutableTree, mirror map[string]string, version int64) { + if tree.ndb.getLatestVersion() != version { + // The fast node disk check should only be done to the latest version + return + } + + count := 0 + err := tree.ndb.traverseFastNodes(func(keyWithPrefix, v []byte) error { + key := keyWithPrefix[1:] + count += 1 + fastNode, err := DeserializeFastNode(key, v) + require.Nil(t, err) + + mirrorVal := mirror[string(fastNode.key)] + + require.NotNil(t, mirrorVal) + require.Equal(t, []byte(mirrorVal), fastNode.value) + return nil + }) + require.NoError(t, err) + require.Equal(t, len(mirror), count) } // Checks that all versions in the tree are present in the mirrors, and vice-versa. diff --git a/tree_test.go b/tree_test.go index 86ff48923..3afaf64ec 100644 --- a/tree_test.go +++ b/tree_test.go @@ -66,11 +66,15 @@ func TestVersionedRandomTree(t *testing.T) { tree.SaveVersion() } require.Equal(versions, len(tree.ndb.roots()), "wrong number of roots") - require.Equal(versions*keysPerVersion, len(tree.ndb.leafNodes()), "wrong number of nodes") + leafNodes, err := tree.ndb.leafNodes() + require.Nil(err) + require.Equal(versions*keysPerVersion, len(leafNodes), "wrong number of nodes") // Before deleting old versions, we should have equal or more nodes in the // db than in the current tree version. - require.True(len(tree.ndb.nodes()) >= tree.nodeSize()) + nodes, err := tree.ndb.nodes() + require.Nil(err) + require.True(len(nodes) >= tree.nodeSize()) // Ensure it returns all versions in sorted order available := tree.AvailableVersions() @@ -94,9 +98,13 @@ func TestVersionedRandomTree(t *testing.T) { // After cleaning up all previous versions, we should have as many nodes // in the db as in the current tree version. - require.Len(tree.ndb.leafNodes(), int(tree.Size())) + leafNodes, err = tree.ndb.leafNodes() + require.Nil(err) + require.Len(leafNodes, int(tree.Size())) - require.Equal(tree.nodeSize(), len(tree.ndb.nodes())) + nodes, err = tree.ndb.nodes() + require.Nil(err) + require.Equal(tree.nodeSize(), len(nodes)) } // nolint: dupl @@ -197,13 +205,19 @@ func TestVersionedRandomTreeSmallKeys(t *testing.T) { // After cleaning up all previous versions, we should have as many nodes // in the db as in the current tree version. The simple tree must be equal // too. - require.Len(tree.ndb.leafNodes(), int(tree.Size())) - require.Len(tree.ndb.nodes(), tree.nodeSize()) - require.Len(tree.ndb.nodes(), singleVersionTree.nodeSize()) + leafNodes, err := tree.ndb.leafNodes() + require.Nil(err) + + nodes, err := tree.ndb.nodes() + require.Nil(err) + + require.Len(leafNodes, int(tree.Size())) + require.Len(nodes, tree.nodeSize()) + require.Len(nodes, singleVersionTree.nodeSize()) // Try getting random keys. for i := 0; i < keysPerVersion; i++ { - _, val := tree.Get([]byte(cmn.RandStr(1))) + val := tree.Get([]byte(cmn.RandStr(1))) require.NotNil(val) require.NotEmpty(val) } @@ -240,13 +254,19 @@ func TestVersionedRandomTreeSmallKeysRandomDeletes(t *testing.T) { // After cleaning up all previous versions, we should have as many nodes // in the db as in the current tree version. The simple tree must be equal // too. - require.Len(tree.ndb.leafNodes(), int(tree.Size())) - require.Len(tree.ndb.nodes(), tree.nodeSize()) - require.Len(tree.ndb.nodes(), singleVersionTree.nodeSize()) + leafNodes, err := tree.ndb.leafNodes() + require.Nil(err) + + nodes, err := tree.ndb.nodes() + require.Nil(err) + + require.Len(leafNodes, int(tree.Size())) + require.Len(nodes, tree.nodeSize()) + require.Len(nodes, singleVersionTree.nodeSize()) // Try getting random keys. for i := 0; i < keysPerVersion; i++ { - _, val := tree.Get([]byte(cmn.RandStr(1))) + val := tree.Get([]byte(cmn.RandStr(1))) require.NotNil(val) require.NotEmpty(val) } @@ -272,7 +292,9 @@ func TestVersionedTreeSpecial1(t *testing.T) { tree.DeleteVersion(2) tree.DeleteVersion(3) - require.Equal(t, tree.nodeSize(), len(tree.ndb.nodes())) + nodes, err := tree.ndb.nodes() + require.Nil(t, err) + require.Equal(t, tree.nodeSize(), len(nodes)) } func TestVersionedRandomTreeSpecial2(t *testing.T) { @@ -289,7 +311,10 @@ func TestVersionedRandomTreeSpecial2(t *testing.T) { tree.SaveVersion() tree.DeleteVersion(1) - require.Len(tree.ndb.nodes(), tree.nodeSize()) + + nodes, err := tree.ndb.nodes() + require.NoError(err) + require.Len(nodes, tree.nodeSize()) } func TestVersionedEmptyTree(t *testing.T) { @@ -358,9 +383,10 @@ func TestVersionedTree(t *testing.T) { tree, err := NewMutableTree(d, 0) require.NoError(err) - // We start with zero keys in the databse. + // We start with empty database. require.Equal(0, tree.ndb.size()) require.True(tree.IsEmpty()) + require.False(tree.IsFastCacheEnabled()) // version 0 @@ -368,7 +394,9 @@ func TestVersionedTree(t *testing.T) { tree.Set([]byte("key2"), []byte("val0")) // Still zero keys, since we haven't written them. - require.Len(tree.ndb.leafNodes(), 0) + nodes, err := tree.ndb.leafNodes() + require.NoError(err) + require.Len(nodes, 0) require.False(tree.IsEmpty()) // Now let's write the keys to storage. @@ -383,7 +411,8 @@ func TestVersionedTree(t *testing.T) { // key2 (root) version=1 // ----------- - nodes1 := tree.ndb.leafNodes() + nodes1, err := tree.ndb.leafNodes() + require.NoError(err) require.Len(nodes1, 2, "db should have a size of 2") // version 1 @@ -391,7 +420,9 @@ func TestVersionedTree(t *testing.T) { tree.Set([]byte("key1"), []byte("val1")) tree.Set([]byte("key2"), []byte("val1")) tree.Set([]byte("key3"), []byte("val1")) - require.Len(tree.ndb.leafNodes(), len(nodes1)) + nodes, err = tree.ndb.leafNodes() + require.NoError(err) + require.Len(nodes, len(nodes1)) hash2, v2, err := tree.SaveVersion() require.NoError(err) @@ -417,9 +448,12 @@ func TestVersionedTree(t *testing.T) { // key3 = val1 // ----------- - nodes2 := tree.ndb.leafNodes() + nodes2, err := tree.ndb.leafNodes() + require.NoError(err) require.Len(nodes2, 5, "db should have grown in size") - require.Len(tree.ndb.orphans(), 3, "db should have three orphans") + orphans, err := tree.ndb.orphans() + require.NoError(err) + require.Len(orphans, 3, "db should have three orphans") // Create three more orphans. tree.Remove([]byte("key1")) // orphans both leaf node and inner node containing "key1" and "key2" @@ -439,9 +473,13 @@ func TestVersionedTree(t *testing.T) { // key2 = val2 // ----------- - nodes3 := tree.ndb.leafNodes() + nodes3, err := tree.ndb.leafNodes() + require.NoError(err) require.Len(nodes3, 6, "wrong number of nodes") - require.Len(tree.ndb.orphans(), 7, "wrong number of orphans") + + orphans, err = tree.ndb.orphans() + require.NoError(err) + require.Len(orphans, 7, "wrong number of orphans") hash4, _, _ := tree.SaveVersion() require.EqualValues(hash3, hash4) @@ -456,48 +494,49 @@ func TestVersionedTree(t *testing.T) { // DB UNCHANGED // ------------ - nodes4 := tree.ndb.leafNodes() + nodes4, err := tree.ndb.leafNodes() + require.NoError(err) require.Len(nodes4, len(nodes3), "db should not have changed in size") tree.Set([]byte("key1"), []byte("val0")) // "key2" - _, val := tree.GetVersioned([]byte("key2"), 0) + val := tree.GetVersioned([]byte("key2"), 0) require.Nil(val) - _, val = tree.GetVersioned([]byte("key2"), 1) + val = tree.GetVersioned([]byte("key2"), 1) require.Equal("val0", string(val)) - _, val = tree.GetVersioned([]byte("key2"), 2) + val = tree.GetVersioned([]byte("key2"), 2) require.Equal("val1", string(val)) - _, val = tree.Get([]byte("key2")) + val = tree.Get([]byte("key2")) require.Equal("val2", string(val)) // "key1" - _, val = tree.GetVersioned([]byte("key1"), 1) + val = tree.GetVersioned([]byte("key1"), 1) require.Equal("val0", string(val)) - _, val = tree.GetVersioned([]byte("key1"), 2) + val = tree.GetVersioned([]byte("key1"), 2) require.Equal("val1", string(val)) - _, val = tree.GetVersioned([]byte("key1"), 3) + val = tree.GetVersioned([]byte("key1"), 3) require.Nil(val) - _, val = tree.GetVersioned([]byte("key1"), 4) + val = tree.GetVersioned([]byte("key1"), 4) require.Nil(val) - _, val = tree.Get([]byte("key1")) + val = tree.Get([]byte("key1")) require.Equal("val0", string(val)) // "key3" - _, val = tree.GetVersioned([]byte("key3"), 0) + val = tree.GetVersioned([]byte("key3"), 0) require.Nil(val) - _, val = tree.GetVersioned([]byte("key3"), 2) + val = tree.GetVersioned([]byte("key3"), 2) require.Equal("val1", string(val)) - _, val = tree.GetVersioned([]byte("key3"), 3) + val = tree.GetVersioned([]byte("key3"), 3) require.Equal("val1", string(val)) // Delete a version. After this the keys in that version should not be found. @@ -513,29 +552,31 @@ func TestVersionedTree(t *testing.T) { // key2 = val2 // ----------- - nodes5 := tree.ndb.leafNodes() + nodes5, err := tree.ndb.leafNodes() + require.NoError(err) + require.True(len(nodes5) < len(nodes4), "db should have shrunk after delete %d !< %d", len(nodes5), len(nodes4)) - _, val = tree.GetVersioned([]byte("key2"), 2) + val = tree.GetVersioned([]byte("key2"), 2) require.Nil(val) - _, val = tree.GetVersioned([]byte("key3"), 2) + val = tree.GetVersioned([]byte("key3"), 2) require.Nil(val) // But they should still exist in the latest version. - _, val = tree.Get([]byte("key2")) + val = tree.Get([]byte("key2")) require.Equal("val2", string(val)) - _, val = tree.Get([]byte("key3")) + val = tree.Get([]byte("key3")) require.Equal("val1", string(val)) // Version 1 should still be available. - _, val = tree.GetVersioned([]byte("key1"), 1) + val = tree.GetVersioned([]byte("key1"), 1) require.Equal("val0", string(val)) - _, val = tree.GetVersioned([]byte("key2"), 1) + val = tree.GetVersioned([]byte("key2"), 1) require.Equal("val0", string(val)) } @@ -551,29 +592,39 @@ func TestVersionedTreeVersionDeletingEfficiency(t *testing.T) { tree.Set([]byte("key2"), []byte("val0")) tree.SaveVersion() - require.Len(t, tree.ndb.leafNodes(), 3) + leafNodes, err := tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 3) tree.Set([]byte("key1"), []byte("val1")) tree.Set([]byte("key2"), []byte("val1")) tree.Set([]byte("key3"), []byte("val1")) tree.SaveVersion() - require.Len(t, tree.ndb.leafNodes(), 6) + leafNodes, err = tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 6) tree.Set([]byte("key0"), []byte("val2")) tree.Remove([]byte("key1")) tree.Set([]byte("key2"), []byte("val2")) tree.SaveVersion() - require.Len(t, tree.ndb.leafNodes(), 8) + leafNodes, err = tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 8) tree.DeleteVersion(2) - require.Len(t, tree.ndb.leafNodes(), 6) + leafNodes, err = tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 6) tree.DeleteVersion(1) - require.Len(t, tree.ndb.leafNodes(), 3) + leafNodes, err = tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 3) tree2, err := getTestTree(0) require.NoError(t, err) @@ -606,21 +657,23 @@ func TestVersionedTreeOrphanDeleting(t *testing.T) { tree.DeleteVersion(2) - _, val := tree.Get([]byte("key0")) + val := tree.Get([]byte("key0")) require.Equal(t, val, []byte("val2")) - _, val = tree.Get([]byte("key1")) + val = tree.Get([]byte("key1")) require.Nil(t, val) - _, val = tree.Get([]byte("key2")) + val = tree.Get([]byte("key2")) require.Equal(t, val, []byte("val2")) - _, val = tree.Get([]byte("key3")) + val = tree.Get([]byte("key3")) require.Equal(t, val, []byte("val1")) tree.DeleteVersion(1) - require.Len(t, tree.ndb.leafNodes(), 3) + leafNodes, err := tree.ndb.leafNodes() + require.Nil(t, err) + require.Len(t, leafNodes, 3) } func TestVersionedTreeSpecialCase(t *testing.T) { @@ -644,7 +697,7 @@ func TestVersionedTreeSpecialCase(t *testing.T) { tree.DeleteVersion(2) - _, val := tree.GetVersioned([]byte("key2"), 1) + val := tree.GetVersioned([]byte("key2"), 1) require.Equal("val0", string(val)) } @@ -673,7 +726,7 @@ func TestVersionedTreeSpecialCase2(t *testing.T) { require.NoError(tree.DeleteVersion(2)) - _, val := tree.GetVersioned([]byte("key2"), 1) + val := tree.GetVersioned([]byte("key2"), 1) require.Equal("val0", string(val)) } @@ -703,7 +756,9 @@ func TestVersionedTreeSpecialCase3(t *testing.T) { tree.DeleteVersion(3) tree.DeleteVersion(4) - require.Equal(tree.nodeSize(), len(tree.ndb.nodes())) + nodes, err := tree.ndb.nodes() + require.NoError(err) + require.Equal(tree.nodeSize(), len(nodes)) } func TestVersionedTreeSaveAndLoad(t *testing.T) { @@ -756,7 +811,9 @@ func TestVersionedTreeSaveAndLoad(t *testing.T) { require.False(ntree.IsEmpty()) require.Equal(int64(4), ntree.Size()) - require.Len(ntree.ndb.nodes(), ntree.nodeSize()) + nodes, err := tree.ndb.nodes() + require.NoError(err) + require.Len(nodes, ntree.nodeSize()) } func TestVersionedTreeErrors(t *testing.T) { @@ -778,7 +835,7 @@ func TestVersionedTreeErrors(t *testing.T) { require.Error(tree.DeleteVersion(1)) // Trying to get a key from a version which doesn't exist. - _, val := tree.GetVersioned([]byte("key"), 404) + val := tree.GetVersioned([]byte("key"), 404) require.Nil(val) // Same thing with proof. We get an error because a proof couldn't be @@ -808,19 +865,21 @@ func TestVersionedCheckpoints(t *testing.T) { keys[int64(i)] = append(keys[int64(i)], k) tree.Set(k, v) } - tree.SaveVersion() + _, _, err = tree.SaveVersion() + require.NoError(err, "failed to save version") } for i := 1; i <= versions; i++ { if i%versionsPerCheckpoint != 0 { - tree.DeleteVersion(int64(i)) + err = tree.DeleteVersion(int64(i)) + require.NoError(err, "failed to delete") } } // Make sure all keys exist at least once. for _, ks := range keys { for _, k := range ks { - _, val := tree.Get(k) + val := tree.Get(k) require.NotEmpty(val) } } @@ -829,7 +888,7 @@ func TestVersionedCheckpoints(t *testing.T) { for i := 1; i <= versions; i++ { if i%versionsPerCheckpoint != 0 { for _, k := range keys[int64(i)] { - _, val := tree.GetVersioned(k, int64(i)) + val := tree.GetVersioned(k, int64(i)) require.Nil(val) } } @@ -839,7 +898,7 @@ func TestVersionedCheckpoints(t *testing.T) { for i := 1; i <= versions; i++ { for _, k := range keys[int64(i)] { if i%versionsPerCheckpoint == 0 { - _, val := tree.GetVersioned(k, int64(i)) + val := tree.GetVersioned(k, int64(i)) require.NotEmpty(val) } } @@ -868,7 +927,7 @@ func TestVersionedCheckpointsSpecialCase(t *testing.T) { // checkpoint, which is version 10. tree.DeleteVersion(1) - _, val := tree.GetVersioned(key, 2) + val := tree.GetVersioned(key, 2) require.NotEmpty(val) require.Equal([]byte("val1"), val) } @@ -932,19 +991,19 @@ func TestVersionedCheckpointsSpecialCase4(t *testing.T) { tree.Set([]byte("X"), []byte("New")) tree.SaveVersion() - _, val := tree.GetVersioned([]byte("A"), 2) + val := tree.GetVersioned([]byte("A"), 2) require.Nil(t, val) - _, val = tree.GetVersioned([]byte("A"), 1) + val = tree.GetVersioned([]byte("A"), 1) require.NotEmpty(t, val) tree.DeleteVersion(1) tree.DeleteVersion(2) - _, val = tree.GetVersioned([]byte("A"), 2) + val = tree.GetVersioned([]byte("A"), 2) require.Nil(t, val) - _, val = tree.GetVersioned([]byte("A"), 1) + val = tree.GetVersioned([]byte("A"), 1) require.Nil(t, val) } @@ -1047,9 +1106,15 @@ func TestVersionedTreeEfficiency(t *testing.T) { // Keys of size one are likely to be overwritten. tree.Set([]byte(cmn.RandStr(1)), []byte(cmn.RandStr(8))) } - sizeBefore := len(tree.ndb.nodes()) + nodes, err := tree.ndb.nodes() + require.NoError(err) + sizeBefore := len(nodes) tree.SaveVersion() - sizeAfter := len(tree.ndb.nodes()) + _, err = tree.ndb.nodes() + require.NoError(err) + nodes, err = tree.ndb.nodes() + require.NoError(err) + sizeAfter := len(nodes) change := sizeAfter - sizeBefore keysAddedPerVersion[i] = change keysAdded += change @@ -1058,9 +1123,13 @@ func TestVersionedTreeEfficiency(t *testing.T) { keysDeleted := 0 for i := 1; i < versions; i++ { if tree.VersionExists(int64(i)) { - sizeBefore := len(tree.ndb.nodes()) + nodes, err := tree.ndb.nodes() + require.NoError(err) + sizeBefore := len(nodes) tree.DeleteVersion(int64(i)) - sizeAfter := len(tree.ndb.nodes()) + nodes, err = tree.ndb.nodes() + require.NoError(err) + sizeAfter := len(nodes) change := sizeBefore - sizeAfter keysDeleted += change @@ -1170,12 +1239,14 @@ func TestOrphans(t *testing.T) { require.NoError(err, "DeleteVersion should not error") } - tree.ndb.traverseOrphans(func(k, v []byte) { + err = tree.ndb.traverseOrphans(func(k, v []byte) error { var fromVersion, toVersion int64 orphanKeyFormat.Scan(k, &toVersion, &fromVersion) require.True(fromVersion == int64(1) || toVersion == int64(99), fmt.Sprintf(`Unexpected orphan key exists: %v with fromVersion = %d and toVersion = %d.\n Any orphan remaining in db should have either fromVersion == 1 or toVersion == 99. Since Version 1 and 99 are only versions in db`, k, fromVersion, toVersion)) + return nil }) + require.Nil(err) } func TestVersionedTreeHash(t *testing.T) { @@ -1222,12 +1293,12 @@ func TestCopyValueSemantics(t *testing.T) { val := []byte("v1") tree.Set([]byte("k"), val) - _, v := tree.Get([]byte("k")) + v := tree.Get([]byte("k")) require.Equal([]byte("v1"), v) val[1] = '2' - _, val = tree.Get([]byte("k")) + val = tree.Get([]byte("k")) require.Equal([]byte("v2"), val) } @@ -1251,13 +1322,13 @@ func TestRollback(t *testing.T) { require.Equal(int64(2), tree.Size()) - _, val := tree.Get([]byte("r")) + val := tree.Get([]byte("r")) require.Nil(val) - _, val = tree.Get([]byte("s")) + val = tree.Get([]byte("s")) require.Nil(val) - _, val = tree.Get([]byte("t")) + val = tree.Get([]byte("t")) require.Equal([]byte("v"), val) } @@ -1282,7 +1353,7 @@ func TestLazyLoadVersion(t *testing.T) { require.NoError(t, err, "unexpected error when lazy loading version") require.Equal(t, version, int64(maxVersions)) - _, value := tree.Get([]byte(fmt.Sprintf("key_%d", maxVersions))) + value := tree.Get([]byte(fmt.Sprintf("key_%d", maxVersions))) require.Equal(t, value, []byte(fmt.Sprintf("value_%d", maxVersions)), "unexpected value") // require the ability to lazy load an older version @@ -1290,7 +1361,7 @@ func TestLazyLoadVersion(t *testing.T) { require.NoError(t, err, "unexpected error when lazy loading version") require.Equal(t, version, int64(maxVersions-1)) - _, value = tree.Get([]byte(fmt.Sprintf("key_%d", maxVersions-1))) + value = tree.Get([]byte(fmt.Sprintf("key_%d", maxVersions-1))) require.Equal(t, value, []byte(fmt.Sprintf("value_%d", maxVersions-1)), "unexpected value") // require the inability to lazy load a non-valid version @@ -1604,7 +1675,9 @@ func TestLoadVersionForOverwritingCase2(t *testing.T) { removedNodes := []*Node{} - for _, n := range tree.ndb.nodes() { + nodes, err := tree.ndb.nodes() + require.NoError(err) + for _, n := range nodes { if n.version > 1 { removedNodes = append(removedNodes, n) } @@ -1614,7 +1687,7 @@ func TestLoadVersionForOverwritingCase2(t *testing.T) { require.NoError(err, "LoadVersionForOverwriting should not fail") for i := byte(0); i < 20; i++ { - _, v := tree.Get([]byte{i}) + v := tree.Get([]byte{i}) require.Equal([]byte{i}, v) } @@ -1657,7 +1730,9 @@ func TestLoadVersionForOverwritingCase3(t *testing.T) { removedNodes := []*Node{} - for _, n := range tree.ndb.nodes() { + nodes, err := tree.ndb.nodes() + require.NoError(err) + for _, n := range nodes { if n.version > 1 { removedNodes = append(removedNodes, n) } @@ -1678,7 +1753,173 @@ func TestLoadVersionForOverwritingCase3(t *testing.T) { } for i := byte(0); i < 20; i++ { - _, v := tree.Get([]byte{i}) + v := tree.Get([]byte{i}) require.Equal([]byte{i}, v) } } + +func TestIterate_ImmutableTree_Version1(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(1) + require.NoError(t, err) + + assertImmutableMirrorIterate(t, immutableTree, mirror) +} + +func TestIterate_ImmutableTree_Version2(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + randomizeTreeAndMirror(t, tree, mirror) + + _, _, err = tree.SaveVersion() + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(2) + require.NoError(t, err) + + assertImmutableMirrorIterate(t, immutableTree, mirror) +} + +func TestGetByIndex_ImmutableTree(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + mirrorKeys := getSortedMirrorKeys(mirror) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(1) + require.NoError(t, err) + + require.True(t, immutableTree.IsFastCacheEnabled()) + + for index, expectedKey := range mirrorKeys { + expectedValue := mirror[expectedKey] + + actualKey, actualValue := immutableTree.GetByIndex(int64(index)) + + require.Equal(t, expectedKey, string(actualKey)) + require.Equal(t, expectedValue, string(actualValue)) + } +} + +func TestGetWithIndex_ImmutableTree(t *testing.T) { + tree, mirror := getRandomizedTreeAndMirror(t) + mirrorKeys := getSortedMirrorKeys(mirror) + + _, _, err := tree.SaveVersion() + require.NoError(t, err) + + immutableTree, err := tree.GetImmutable(1) + require.NoError(t, err) + + require.True(t, immutableTree.IsFastCacheEnabled()) + + for expectedIndex, key := range mirrorKeys { + expectedValue := mirror[key] + + actualIndex, actualValue := immutableTree.GetWithIndex([]byte(key)) + + require.Equal(t, expectedValue, string(actualValue)) + require.Equal(t, int64(expectedIndex), actualIndex) + } +} + +func Benchmark_GetWithIndex(b *testing.B) { + db, err := db.NewDB("test", db.MemDBBackend, "") + require.NoError(b, err) + + const numKeyVals = 100000 + + t, err := NewMutableTree(db, numKeyVals) + require.NoError(b, err) + + keys := make([][]byte, 0, numKeyVals) + + for i := 0; i < numKeyVals; i++ { + key := randBytes(10) + keys = append(keys, key) + t.Set(key, randBytes(10)) + } + _, _, err = t.SaveVersion() + require.NoError(b, err) + + b.ReportAllocs() + runtime.GC() + + b.Run("fast", func(sub *testing.B) { + require.True(b, t.IsFastCacheEnabled()) + b.ResetTimer() + for i := 0; i < sub.N; i++ { + randKey := rand.Intn(numKeyVals) + t.GetWithIndex(keys[randKey]) + } + }) + + b.Run("regular", func(sub *testing.B) { + // get non-latest version to force regular storage + _, latestVersion, err := t.SaveVersion() + require.NoError(b, err) + + itree, err := t.GetImmutable(latestVersion - 1) + require.NoError(b, err) + + require.False(b, itree.IsFastCacheEnabled()) + b.ResetTimer() + for i := 0; i < sub.N; i++ { + randKey := rand.Intn(numKeyVals) + itree.GetWithIndex(keys[randKey]) + } + }) +} + +func Benchmark_GetByIndex(b *testing.B) { + db, err := db.NewDB("test", db.MemDBBackend, "") + require.NoError(b, err) + + const numKeyVals = 100000 + + t, err := NewMutableTree(db, numKeyVals) + require.NoError(b, err) + + for i := 0; i < numKeyVals; i++ { + key := randBytes(10) + t.Set(key, randBytes(10)) + } + _, _, err = t.SaveVersion() + require.NoError(b, err) + + b.ReportAllocs() + runtime.GC() + + b.Run("fast", func(sub *testing.B) { + require.True(b, t.IsFastCacheEnabled()) + b.ResetTimer() + for i := 0; i < sub.N; i++ { + randIdx := rand.Intn(numKeyVals) + t.GetByIndex(int64(randIdx)) + } + }) + + b.Run("regular", func(sub *testing.B) { + // get non-latest version to force regular storage + _, latestVersion, err := t.SaveVersion() + require.NoError(b, err) + + itree, err := t.GetImmutable(latestVersion - 1) + require.NoError(b, err) + + require.False(b, itree.IsFastCacheEnabled()) + b.ResetTimer() + for i := 0; i < sub.N; i++ { + randIdx := rand.Intn(numKeyVals) + itree.GetByIndex(int64(randIdx)) + } + }) +} diff --git a/unsaved_fast_iterator.go b/unsaved_fast_iterator.go new file mode 100644 index 000000000..d378dc76f --- /dev/null +++ b/unsaved_fast_iterator.go @@ -0,0 +1,233 @@ +package iavl + +import ( + "bytes" + "errors" + "sort" + + dbm "github.com/tendermint/tm-db" +) + +var ( + errUnsavedFastIteratorNilAdditionsGiven = errors.New("unsaved fast iterator must be created with unsaved additions but they were nil") + + errUnsavedFastIteratorNilRemovalsGiven = errors.New("unsaved fast iterator must be created with unsaved removals but they were nil") +) + +// UnsavedFastIterator is a dbm.Iterator for ImmutableTree +// it iterates over the latest state via fast nodes, +// taking advantage of keys being located in sequence in the underlying database. +type UnsavedFastIterator struct { + start, end []byte + + valid bool + + ascending bool + + err error + + ndb *nodeDB + + unsavedFastNodeAdditions map[string]*FastNode + + unsavedFastNodeRemovals map[string]interface{} + + unsavedFastNodesToSort []string + + nextKey []byte + + nextVal []byte + + nextUnsavedNodeIdx int + + fastIterator dbm.Iterator +} + +var _ dbm.Iterator = &UnsavedFastIterator{} + +func NewUnsavedFastIterator(start, end []byte, ascending bool, ndb *nodeDB, unsavedFastNodeAdditions map[string]*FastNode, unsavedFastNodeRemovals map[string]interface{}) *UnsavedFastIterator { + + iter := &UnsavedFastIterator{ + start: start, + end: end, + err: nil, + ascending: ascending, + ndb: ndb, + unsavedFastNodeAdditions: unsavedFastNodeAdditions, + unsavedFastNodeRemovals: unsavedFastNodeRemovals, + unsavedFastNodesToSort: make([]string, 0), + nextKey: nil, + nextVal: nil, + nextUnsavedNodeIdx: 0, + fastIterator: NewFastIterator(start, end, ascending, ndb), + } + + // We need to ensure that we iterate over saved and unsaved state in order. + // The strategy is to sort unsaved nodes, the fast node on disk are already sorted. + // Then, we keep a pointer to both the unsaved and saved nodes, and iterate over them in order efficiently. + for _, fastNode := range unsavedFastNodeAdditions { + if start != nil && bytes.Compare(fastNode.key, start) < 0 { + continue + } + + if end != nil && bytes.Compare(fastNode.key, end) >= 0 { + continue + } + + iter.unsavedFastNodesToSort = append(iter.unsavedFastNodesToSort, string(fastNode.key)) + } + + sort.Slice(iter.unsavedFastNodesToSort, func(i, j int) bool { + if ascending { + return iter.unsavedFastNodesToSort[i] < iter.unsavedFastNodesToSort[j] + } else { + return iter.unsavedFastNodesToSort[i] > iter.unsavedFastNodesToSort[j] + } + }) + + if iter.ndb == nil { + iter.err = errFastIteratorNilNdbGiven + iter.valid = false + return iter + } + + if iter.unsavedFastNodeAdditions == nil { + iter.err = errUnsavedFastIteratorNilAdditionsGiven + iter.valid = false + return iter + } + + if iter.unsavedFastNodeRemovals == nil { + iter.err = errUnsavedFastIteratorNilRemovalsGiven + iter.valid = false + return iter + } + + // Move to the first elemenet + iter.Next() + + return iter +} + +// Domain implements dbm.Iterator. +// Maps the underlying nodedb iterator domain, to the 'logical' keys involved. +func (iter *UnsavedFastIterator) Domain() ([]byte, []byte) { + return iter.start, iter.end +} + +// Valid implements dbm.Iterator. +func (iter *UnsavedFastIterator) Valid() bool { + if iter.start != nil && iter.end != nil { + if bytes.Compare(iter.end, iter.start) != 1 { + return false + } + } + + return iter.fastIterator.Valid() || iter.nextUnsavedNodeIdx < len(iter.unsavedFastNodesToSort) || (iter.nextKey != nil && iter.nextVal != nil) +} + +// Key implements dbm.Iterator +func (iter *UnsavedFastIterator) Key() []byte { + return iter.nextKey +} + +// Value implements dbm.Iterator +func (iter *UnsavedFastIterator) Value() []byte { + return iter.nextVal +} + +// Next implements dbm.Iterator +// Its effectively running the constant space overhead algorithm for streaming through sorted lists: +// the sorted lists being underlying fast nodes & unsavedFastNodeChanges +func (iter *UnsavedFastIterator) Next() { + if iter.ndb == nil { + iter.err = errFastIteratorNilNdbGiven + iter.valid = false + return + } + + if iter.fastIterator.Valid() && iter.nextUnsavedNodeIdx < len(iter.unsavedFastNodesToSort) { + diskKeyStr := string(iter.fastIterator.Key()) + + if iter.unsavedFastNodeRemovals[diskKeyStr] != nil { + // If next fast node from disk is to be removed, skip it. + iter.fastIterator.Next() + iter.Next() + return + } + + nextUnsavedKey := iter.unsavedFastNodesToSort[iter.nextUnsavedNodeIdx] + nextUnsavedNode := iter.unsavedFastNodeAdditions[nextUnsavedKey] + + var isUnsavedNext bool + if iter.ascending { + isUnsavedNext = diskKeyStr >= nextUnsavedKey + } else { + isUnsavedNext = diskKeyStr <= nextUnsavedKey + } + + if isUnsavedNext { + // Unsaved node is next + + if diskKeyStr == nextUnsavedKey { + // Unsaved update prevails over saved copy so we skip the copy from disk + iter.fastIterator.Next() + } + + iter.nextKey = nextUnsavedNode.key + iter.nextVal = nextUnsavedNode.value + + iter.nextUnsavedNodeIdx++ + return + } else { + // Disk node is next + iter.nextKey = iter.fastIterator.Key() + iter.nextVal = iter.fastIterator.Value() + + iter.fastIterator.Next() + return + } + } + + // if only nodes on disk are left, we return them + if iter.fastIterator.Valid() { + if iter.unsavedFastNodeRemovals[string(iter.fastIterator.Key())] != nil { + // If next fast node from disk is to be removed, skip it. + iter.fastIterator.Next() + iter.Next() + return + } + + iter.nextKey = iter.fastIterator.Key() + iter.nextVal = iter.fastIterator.Value() + + iter.fastIterator.Next() + return + } + + // if only unsaved nodes are left, we can just iterate + if iter.nextUnsavedNodeIdx < len(iter.unsavedFastNodesToSort) { + nextUnsavedKey := iter.unsavedFastNodesToSort[iter.nextUnsavedNodeIdx] + nextUnsavedNode := iter.unsavedFastNodeAdditions[nextUnsavedKey] + + iter.nextKey = nextUnsavedNode.key + iter.nextVal = nextUnsavedNode.value + + iter.nextUnsavedNodeIdx++ + return + } + + iter.nextKey = nil + iter.nextVal = nil +} + +// Close implements dbm.Iterator +func (iter *UnsavedFastIterator) Close() error { + iter.valid = false + return iter.fastIterator.Close() +} + +// Error implements dbm.Iterator +func (iter *UnsavedFastIterator) Error() error { + return iter.err +} diff --git a/with_gcc_test.go b/with_gcc_test.go index 70dc791a5..433ab3acb 100644 --- a/with_gcc_test.go +++ b/with_gcc_test.go @@ -1,3 +1,4 @@ +//go:build gcc // +build gcc // This file exists because some of the DBs e.g CLevelDB