mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-12-23 13:41:37 +00:00
mpt: implement reference counting
Also postpone MPT initialization until `storeBlock` because we need to read-and-check or save info about refcounting depending on starting height.
This commit is contained in:
Evgenii Stratonikov
parent
1c559634aa
commit
85f927d892
9 changed files with 260 additions and 79 deletions
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@ -9,6 +9,10 @@ type (
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ProtocolConfiguration struct {
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Magic netmode.Magic `yaml:"Magic"`
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MemPoolSize int `yaml:"MemPoolSize"`
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// KeepOnlyLatestState specifies if MPT should only store latest state.
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// If true, DB size will be smaller, but older roots won't be accessible.
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// This value should remain the same for the same database.
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KeepOnlyLatestState bool `yaml:"KeepOnlyLatestState"`
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// MaxTraceableBlocks is the length of the chain accessible to smart contracts.
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MaxTraceableBlocks uint32 `yaml:"MaxTraceableBlocks"`
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// P2PSigExtensions enables additional signature-related transaction attributes
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@ -197,6 +197,9 @@ func (bc *Blockchain) init() error {
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if err != nil {
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return err
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}
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if err := bc.dao.InitMPT(0, bc.config.KeepOnlyLatestState); err != nil {
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return fmt.Errorf("can't init MPT: %w", err)
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}
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return bc.storeBlock(genesisBlock, nil)
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}
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if ver != version {
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@ -214,7 +217,7 @@ func (bc *Blockchain) init() error {
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}
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bc.blockHeight = bHeight
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bc.persistedHeight = bHeight
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if err = bc.dao.InitMPT(bHeight); err != nil {
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if err = bc.dao.InitMPT(bHeight, bc.config.KeepOnlyLatestState); err != nil {
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return fmt.Errorf("can't init MPT at height %d: %w", bHeight, err)
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}
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@ -81,7 +81,7 @@ type Simple struct {
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// NewSimple creates new simple dao using provided backend store.
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func NewSimple(backend storage.Store, network netmode.Magic) *Simple {
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st := storage.NewMemCachedStore(backend)
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return &Simple{Store: st, network: network, MPT: mpt.NewTrie(nil, st)}
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return &Simple{Store: st, network: network}
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}
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// GetBatch returns currently accumulated DB changeset.
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@ -340,16 +340,28 @@ func makeStateRootKey(height uint32) []byte {
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}
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// InitMPT initializes MPT at the given height.
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func (dao *Simple) InitMPT(height uint32) error {
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func (dao *Simple) InitMPT(height uint32, enableRefCount bool) error {
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var gcKey = []byte{byte(storage.DataMPT), 1}
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if height == 0 {
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dao.MPT = mpt.NewTrie(nil, dao.Store)
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return nil
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dao.MPT = mpt.NewTrie(nil, enableRefCount, dao.Store)
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var val byte
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if enableRefCount {
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val = 1
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}
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return dao.Store.Put(gcKey, []byte{val})
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}
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var hasRefCount bool
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if v, err := dao.Store.Get(gcKey); err == nil {
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hasRefCount = v[0] != 0
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}
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if hasRefCount != enableRefCount {
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return fmt.Errorf("KeepOnlyLatestState setting mismatch: old=%v, new=%v", hasRefCount, enableRefCount)
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}
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r, err := dao.GetStateRoot(height)
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if err != nil {
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return err
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}
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dao.MPT = mpt.NewTrie(mpt.NewHashNode(r.Root), dao.Store)
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dao.MPT = mpt.NewTrie(mpt.NewHashNode(r.Root), enableRefCount, dao.Store)
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return nil
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}
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@ -16,8 +16,6 @@ type BaseNode struct {
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bytes []byte
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hashValid bool
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bytesValid bool
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isFlushed bool
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}
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// BaseNodeIface abstracts away basic Node functions.
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@ -25,8 +23,6 @@ type BaseNodeIface interface {
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Hash() util.Uint256
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Type() NodeType
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Bytes() []byte
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IsFlushed() bool
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SetFlushed()
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}
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type flushedNode interface {
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@ -38,7 +34,6 @@ func (b *BaseNode) setCache(bs []byte, h util.Uint256) {
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b.hash = h
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b.bytesValid = true
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b.hashValid = true
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b.isFlushed = true
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}
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// getHash returns a hash of this BaseNode.
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@ -78,17 +73,6 @@ func (b *BaseNode) updateBytes(n Node) {
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func (b *BaseNode) invalidateCache() {
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b.bytesValid = false
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b.hashValid = false
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b.isFlushed = false
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}
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// IsFlushed checks for node flush status.
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func (b *BaseNode) IsFlushed() bool {
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return b.isFlushed
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}
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// SetFlushed sets 'flushed' flag to true for this node.
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func (b *BaseNode) SetFlushed() {
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b.isFlushed = true
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}
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// encodeNodeWithType encodes node together with it's type.
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@ -99,6 +83,9 @@ func encodeNodeWithType(n Node, w *io.BinWriter) {
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// DecodeNodeWithType decodes node together with it's type.
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func DecodeNodeWithType(r *io.BinReader) Node {
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if r.Err != nil {
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return nil
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}
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var n Node
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switch typ := NodeType(r.ReadB()); typ {
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case BranchT:
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@ -92,7 +92,7 @@ func TestNode_Serializable(t *testing.T) {
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// https://github.com/neo-project/neo/blob/neox-2.x/neo.UnitTests/UT_MPTTrie.cs#L198
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func TestJSONSharp(t *testing.T) {
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tr := NewTrie(nil, newTestStore())
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tr := NewTrie(nil, false, newTestStore())
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require.NoError(t, tr.Put([]byte{0xac, 0x11}, []byte{0xac, 0x11}))
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require.NoError(t, tr.Put([]byte{0xac, 0x22}, []byte{0xac, 0x22}))
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require.NoError(t, tr.Put([]byte{0xac}, []byte{0xac}))
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@ -63,7 +63,7 @@ func (t *Trie) getProof(curr Node, path []byte, proofs *[][]byte) (Node, error)
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// It also returns value for the key.
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func VerifyProof(rh util.Uint256, key []byte, proofs [][]byte) ([]byte, bool) {
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path := toNibbles(key)
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tr := NewTrie(NewHashNode(rh), storage.NewMemCachedStore(storage.NewMemoryStore()))
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tr := NewTrie(NewHashNode(rh), false, storage.NewMemCachedStore(storage.NewMemoryStore()))
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for i := range proofs {
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h := hash.DoubleSha256(proofs[i])
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// no errors in Put to memory store
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@ -15,7 +15,7 @@ func newProofTrie(t *testing.T) *Trie {
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b.Children[4] = NewHashNode(e.Hash())
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b.Children[5] = e2
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tr := NewTrie(b, newTestStore())
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tr := NewTrie(b, false, newTestStore())
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require.NoError(t, tr.Put([]byte{0x12, 0x31}, []byte("value1")))
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require.NoError(t, tr.Put([]byte{0x12, 0x32}, []byte("value2")))
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tr.putToStore(l)
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@ -2,7 +2,9 @@ package mpt
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import (
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"bytes"
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"encoding/binary"
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"errors"
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/core/storage"
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"github.com/nspcc-dev/neo-go/pkg/io"
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@ -13,7 +15,15 @@ import (
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type Trie struct {
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Store *storage.MemCachedStore
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root Node
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root Node
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refcountEnabled bool
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refcount map[util.Uint256]*cachedNode
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}
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type cachedNode struct {
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bytes []byte
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initial int32
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refcount int32
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}
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// ErrNotFound is returned when requested trie item is missing.
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@ -22,7 +32,7 @@ var ErrNotFound = errors.New("item not found")
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// NewTrie returns new MPT trie. It accepts a MemCachedStore to decouple storage errors from logic errors
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// so that all storage errors are processed during `store.Persist()` at the caller.
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// This also has the benefit, that every `Put` can be considered an atomic operation.
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func NewTrie(root Node, store *storage.MemCachedStore) *Trie {
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func NewTrie(root Node, enableRefCount bool, store *storage.MemCachedStore) *Trie {
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if root == nil {
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root = new(HashNode)
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}
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@ -30,6 +40,9 @@ func NewTrie(root Node, store *storage.MemCachedStore) *Trie {
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return &Trie{
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Store: store,
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root: root,
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refcountEnabled: enableRefCount,
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refcount: make(map[util.Uint256]*cachedNode),
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}
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}
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@ -107,12 +120,15 @@ func (t *Trie) Put(key, value []byte) error {
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func (t *Trie) putIntoLeaf(curr *LeafNode, path []byte, val Node) (Node, error) {
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v := val.(*LeafNode)
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if len(path) == 0 {
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t.removeRef(curr.Hash(), curr.bytes)
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t.addRef(val.Hash(), val.Bytes())
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return v, nil
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}
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b := NewBranchNode()
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b.Children[path[0]] = newSubTrie(path[1:], v)
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b.Children[path[0]] = t.newSubTrie(path[1:], v, true)
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b.Children[lastChild] = curr
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t.addRef(b.Hash(), b.bytes)
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return b, nil
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}
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@ -120,18 +136,21 @@ func (t *Trie) putIntoLeaf(curr *LeafNode, path []byte, val Node) (Node, error)
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// It returns Node if curr needs to be replaced and error if any.
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func (t *Trie) putIntoBranch(curr *BranchNode, path []byte, val Node) (Node, error) {
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i, path := splitPath(path)
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t.removeRef(curr.Hash(), curr.bytes)
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r, err := t.putIntoNode(curr.Children[i], path, val)
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if err != nil {
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return nil, err
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}
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curr.Children[i] = r
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curr.invalidateCache()
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t.addRef(curr.Hash(), curr.bytes)
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return curr, nil
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}
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// putIntoExtension puts val to trie if current node is an Extension.
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// It returns Node if curr needs to be replaced and error if any.
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func (t *Trie) putIntoExtension(curr *ExtensionNode, path []byte, val Node) (Node, error) {
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t.removeRef(curr.Hash(), curr.bytes)
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if bytes.HasPrefix(path, curr.key) {
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r, err := t.putIntoNode(curr.next, path[len(curr.key):], val)
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if err != nil {
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@ -139,6 +158,7 @@ func (t *Trie) putIntoExtension(curr *ExtensionNode, path []byte, val Node) (Nod
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}
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curr.next = r
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curr.invalidateCache()
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t.addRef(curr.Hash(), curr.bytes)
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return curr, nil
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}
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@ -147,16 +167,19 @@ func (t *Trie) putIntoExtension(curr *ExtensionNode, path []byte, val Node) (Nod
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keyTail := curr.key[lp:]
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pathTail := path[lp:]
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s1 := newSubTrie(keyTail[1:], curr.next)
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s1 := t.newSubTrie(keyTail[1:], curr.next, false)
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b := NewBranchNode()
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b.Children[keyTail[0]] = s1
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i, pathTail := splitPath(pathTail)
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s2 := newSubTrie(pathTail, val)
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s2 := t.newSubTrie(pathTail, val, true)
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b.Children[i] = s2
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t.addRef(b.Hash(), b.bytes)
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if lp > 0 {
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return NewExtensionNode(copySlice(pref), b), nil
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e := NewExtensionNode(copySlice(pref), b)
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t.addRef(e.Hash(), e.bytes)
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return e, nil
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}
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return b, nil
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}
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@ -165,7 +188,8 @@ func (t *Trie) putIntoExtension(curr *ExtensionNode, path []byte, val Node) (Nod
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// It returns Node if curr needs to be replaced and error if any.
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func (t *Trie) putIntoHash(curr *HashNode, path []byte, val Node) (Node, error) {
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if curr.IsEmpty() {
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return newSubTrie(path, val), nil
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hn := t.newSubTrie(path, val, true)
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return hn, nil
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}
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result, err := t.getFromStore(curr.hash)
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@ -176,13 +200,20 @@ func (t *Trie) putIntoHash(curr *HashNode, path []byte, val Node) (Node, error)
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}
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// newSubTrie create new trie containing node at provided path.
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func newSubTrie(path []byte, val Node) Node {
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func (t *Trie) newSubTrie(path []byte, val Node, newVal bool) Node {
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if newVal {
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t.addRef(val.Hash(), val.Bytes())
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}
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if len(path) == 0 {
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return val
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}
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return NewExtensionNode(path, val)
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e := NewExtensionNode(path, val)
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t.addRef(e.Hash(), e.bytes)
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return e
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}
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// putIntoNode puts val with provided path inside curr and returns updated node.
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// Reference counters are updated for both curr and returned value.
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func (t *Trie) putIntoNode(curr Node, path []byte, val Node) (Node, error) {
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switch n := curr.(type) {
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case *LeafNode:
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@ -212,10 +243,13 @@ func (t *Trie) Delete(key []byte) error {
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func (t *Trie) deleteFromBranch(b *BranchNode, path []byte) (Node, error) {
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i, path := splitPath(path)
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h := b.Hash()
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bs := b.bytes
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r, err := t.deleteFromNode(b.Children[i], path)
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if err != nil {
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return nil, err
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}
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t.removeRef(h, bs)
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b.Children[i] = r
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b.invalidateCache()
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var count, index int
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@ -228,6 +262,7 @@ func (t *Trie) deleteFromBranch(b *BranchNode, path []byte) (Node, error) {
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}
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// count is >= 1 because branch node had at least 2 children before deletion.
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if count > 1 {
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t.addRef(b.Hash(), b.bytes)
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return b, nil
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}
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c := b.Children[index]
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@ -241,24 +276,32 @@ func (t *Trie) deleteFromBranch(b *BranchNode, path []byte) (Node, error) {
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}
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}
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if e, ok := c.(*ExtensionNode); ok {
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t.removeRef(e.Hash(), e.bytes)
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e.key = append([]byte{byte(index)}, e.key...)
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e.invalidateCache()
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t.addRef(e.Hash(), e.bytes)
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return e, nil
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}
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return NewExtensionNode([]byte{byte(index)}, c), nil
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e := NewExtensionNode([]byte{byte(index)}, c)
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t.addRef(e.Hash(), e.bytes)
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return e, nil
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}
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func (t *Trie) deleteFromExtension(n *ExtensionNode, path []byte) (Node, error) {
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if !bytes.HasPrefix(path, n.key) {
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return nil, ErrNotFound
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}
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h := n.Hash()
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bs := n.bytes
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r, err := t.deleteFromNode(n.next, path[len(n.key):])
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if err != nil {
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return nil, err
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}
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t.removeRef(h, bs)
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switch nxt := r.(type) {
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case *ExtensionNode:
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t.removeRef(nxt.Hash(), nxt.bytes)
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n.key = append(n.key, nxt.key...)
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n.next = nxt.next
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case *HashNode:
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@ -269,13 +312,17 @@ func (t *Trie) deleteFromExtension(n *ExtensionNode, path []byte) (Node, error)
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n.next = r
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}
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n.invalidateCache()
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t.addRef(n.Hash(), n.bytes)
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return n, nil
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}
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// deleteFromNode removes value with provided path from curr and returns an updated node.
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// Reference counters are updated for both curr and returned value.
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func (t *Trie) deleteFromNode(curr Node, path []byte) (Node, error) {
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switch n := curr.(type) {
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case *LeafNode:
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if len(path) == 0 {
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t.removeRef(curr.Hash(), curr.Bytes())
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return new(HashNode), nil
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}
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return nil, ErrNotFound
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@ -314,32 +361,88 @@ func makeStorageKey(mptKey []byte) []byte {
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// new node to storage. Normally, flush should be called with every StateRoot persist, i.e.
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// after every block.
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func (t *Trie) Flush() {
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t.flush(t.root)
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}
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func (t *Trie) flush(node Node) {
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if node.IsFlushed() {
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return
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}
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switch n := node.(type) {
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case *BranchNode:
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for i := range n.Children {
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t.flush(n.Children[i])
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for h, node := range t.refcount {
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if node.refcount != 0 {
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if node.bytes == nil {
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panic("item not in trie")
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}
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if t.refcountEnabled {
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node.initial = t.updateRefCount(h)
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if node.initial == 0 {
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delete(t.refcount, h)
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}
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} else if node.refcount > 0 {
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_ = t.Store.Put(makeStorageKey(h.BytesBE()), node.bytes)
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}
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node.refcount = 0
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} else {
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delete(t.refcount, h)
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}
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case *ExtensionNode:
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t.flush(n.next)
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case *HashNode:
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return
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}
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t.putToStore(node)
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}
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||||
|
||||
func (t *Trie) putToStore(n Node) {
|
||||
if n.Type() == HashT {
|
||||
panic("can't put hash node in trie")
|
||||
// updateRefCount should be called only when refcounting is enabled.
|
||||
func (t *Trie) updateRefCount(h util.Uint256) int32 {
|
||||
if !t.refcountEnabled {
|
||||
panic("`updateRefCount` is called, but GC is disabled")
|
||||
}
|
||||
var data []byte
|
||||
key := makeStorageKey(h.BytesBE())
|
||||
node := t.refcount[h]
|
||||
cnt := node.initial
|
||||
if cnt == 0 {
|
||||
// A newly created item which may be in store.
|
||||
var err error
|
||||
data, err = t.Store.Get(key)
|
||||
if err == nil {
|
||||
cnt = int32(binary.LittleEndian.Uint32(data[len(data)-4:]))
|
||||
}
|
||||
}
|
||||
if len(data) == 0 {
|
||||
data = append(node.bytes, 0, 0, 0, 0)
|
||||
}
|
||||
cnt += node.refcount
|
||||
switch {
|
||||
case cnt < 0:
|
||||
// BUG: negative reference count
|
||||
panic(fmt.Sprintf("negative reference count: %s new %d, upd %d", h.StringBE(), cnt, t.refcount[h]))
|
||||
case cnt == 0:
|
||||
_ = t.Store.Delete(key)
|
||||
default:
|
||||
binary.LittleEndian.PutUint32(data[len(data)-4:], uint32(cnt))
|
||||
_ = t.Store.Put(key, data)
|
||||
}
|
||||
return cnt
|
||||
}
|
||||
|
||||
func (t *Trie) addRef(h util.Uint256, bs []byte) {
|
||||
node := t.refcount[h]
|
||||
if node == nil {
|
||||
t.refcount[h] = &cachedNode{
|
||||
refcount: 1,
|
||||
bytes: bs,
|
||||
}
|
||||
return
|
||||
}
|
||||
node.refcount++
|
||||
if node.bytes == nil {
|
||||
node.bytes = bs
|
||||
}
|
||||
}
|
||||
|
||||
func (t *Trie) removeRef(h util.Uint256, bs []byte) {
|
||||
node := t.refcount[h]
|
||||
if node == nil {
|
||||
t.refcount[h] = &cachedNode{
|
||||
refcount: -1,
|
||||
bytes: bs,
|
||||
}
|
||||
return
|
||||
}
|
||||
node.refcount--
|
||||
if node.bytes == nil {
|
||||
node.bytes = bs
|
||||
}
|
||||
_ = t.Store.Put(makeStorageKey(n.Hash().BytesBE()), n.Bytes()) // put in MemCached returns no errors
|
||||
n.SetFlushed()
|
||||
}
|
||||
|
||||
func (t *Trie) getFromStore(h util.Uint256) (Node, error) {
|
||||
|
|
@ -354,6 +457,15 @@ func (t *Trie) getFromStore(h util.Uint256) (Node, error) {
|
|||
if r.Err != nil {
|
||||
return nil, r.Err
|
||||
}
|
||||
|
||||
if t.refcountEnabled {
|
||||
data = data[:len(data)-4]
|
||||
node := t.refcount[h]
|
||||
if node != nil {
|
||||
node.bytes = data
|
||||
node.initial = int32(r.ReadU32LE())
|
||||
}
|
||||
}
|
||||
n.Node.(flushedNode).setCache(data, h)
|
||||
return n.Node, nil
|
||||
}
|
||||
|
|
@ -366,6 +478,7 @@ func (t *Trie) Collapse(depth int) {
|
|||
panic("negative depth")
|
||||
}
|
||||
t.root = collapse(depth, t.root)
|
||||
t.refcount = make(map[util.Uint256]*cachedNode)
|
||||
}
|
||||
|
||||
func collapse(depth int, node Node) Node {
|
||||
|
|
|
|||
|
|
@ -26,7 +26,7 @@ func newTestTrie(t *testing.T) *Trie {
|
|||
b.Children[10] = NewExtensionNode([]byte{0x0e}, h)
|
||||
|
||||
e := NewExtensionNode(toNibbles([]byte{0xAC}), b)
|
||||
tr := NewTrie(e, newTestStore())
|
||||
tr := NewTrie(e, false, newTestStore())
|
||||
|
||||
tr.putToStore(e)
|
||||
tr.putToStore(b)
|
||||
|
|
@ -40,12 +40,50 @@ func newTestTrie(t *testing.T) *Trie {
|
|||
return tr
|
||||
}
|
||||
|
||||
func testTrieRefcount(t *testing.T, key1, key2 []byte) {
|
||||
tr := NewTrie(nil, true, storage.NewMemCachedStore(storage.NewMemoryStore()))
|
||||
require.NoError(t, tr.Put(key1, []byte{1}))
|
||||
tr.Flush()
|
||||
require.NoError(t, tr.Put(key2, []byte{1}))
|
||||
tr.Flush()
|
||||
tr.testHas(t, key1, []byte{1})
|
||||
tr.testHas(t, key2, []byte{1})
|
||||
|
||||
// remove first, keep second
|
||||
require.NoError(t, tr.Delete(key1))
|
||||
tr.Flush()
|
||||
tr.testHas(t, key1, nil)
|
||||
tr.testHas(t, key2, []byte{1})
|
||||
|
||||
// no-op
|
||||
require.NoError(t, tr.Put(key1, []byte{1}))
|
||||
require.NoError(t, tr.Delete(key1))
|
||||
tr.Flush()
|
||||
tr.testHas(t, key1, nil)
|
||||
tr.testHas(t, key2, []byte{1})
|
||||
|
||||
// error on delete, refcount should not be updated
|
||||
require.Error(t, tr.Delete(key1))
|
||||
tr.Flush()
|
||||
tr.testHas(t, key1, nil)
|
||||
tr.testHas(t, key2, []byte{1})
|
||||
}
|
||||
|
||||
func TestTrie_Refcount(t *testing.T) {
|
||||
t.Run("Leaf", func(t *testing.T) {
|
||||
testTrieRefcount(t, []byte{0x11}, []byte{0x12})
|
||||
})
|
||||
t.Run("Extension", func(t *testing.T) {
|
||||
testTrieRefcount(t, []byte{0x10, 11}, []byte{0x11, 12})
|
||||
})
|
||||
}
|
||||
|
||||
func TestTrie_PutIntoBranchNode(t *testing.T) {
|
||||
b := NewBranchNode()
|
||||
l := NewLeafNode([]byte{0x8})
|
||||
b.Children[0x7] = NewHashNode(l.Hash())
|
||||
b.Children[0x8] = NewHashNode(random.Uint256())
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, false, newTestStore())
|
||||
|
||||
// next
|
||||
require.NoError(t, tr.Put([]byte{}, []byte{0x12, 0x34}))
|
||||
|
|
@ -70,7 +108,7 @@ func TestTrie_PutIntoExtensionNode(t *testing.T) {
|
|||
l := NewLeafNode([]byte{0x11})
|
||||
key := []byte{0x12}
|
||||
e := NewExtensionNode(toNibbles(key), NewHashNode(l.Hash()))
|
||||
tr := NewTrie(e, newTestStore())
|
||||
tr := NewTrie(e, false, newTestStore())
|
||||
|
||||
// missing hash
|
||||
require.Error(t, tr.Put(key, []byte{0x42}))
|
||||
|
|
@ -87,7 +125,7 @@ func TestTrie_PutIntoHashNode(t *testing.T) {
|
|||
e := NewExtensionNode([]byte{0x02}, l)
|
||||
b.Children[1] = NewHashNode(e.Hash())
|
||||
b.Children[9] = NewHashNode(random.Uint256())
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, false, newTestStore())
|
||||
|
||||
tr.putToStore(e)
|
||||
|
||||
|
|
@ -108,7 +146,7 @@ func TestTrie_PutIntoHashNode(t *testing.T) {
|
|||
func TestTrie_Put(t *testing.T) {
|
||||
trExp := newTestTrie(t)
|
||||
|
||||
trAct := NewTrie(nil, newTestStore())
|
||||
trAct := NewTrie(nil, false, newTestStore())
|
||||
require.NoError(t, trAct.Put([]byte{0xAC, 0x01}, []byte{0xAB, 0xCD}))
|
||||
require.NoError(t, trAct.Put([]byte{0xAC, 0x99}, []byte{0x22, 0x22}))
|
||||
require.NoError(t, trAct.Put([]byte{0xAC, 0xAE}, []byte("hello")))
|
||||
|
|
@ -119,7 +157,7 @@ func TestTrie_Put(t *testing.T) {
|
|||
}
|
||||
|
||||
func TestTrie_PutInvalid(t *testing.T) {
|
||||
tr := NewTrie(nil, newTestStore())
|
||||
tr := NewTrie(nil, false, newTestStore())
|
||||
key, value := []byte("key"), []byte("value")
|
||||
|
||||
// big key
|
||||
|
|
@ -134,7 +172,7 @@ func TestTrie_PutInvalid(t *testing.T) {
|
|||
}
|
||||
|
||||
func TestTrie_BigPut(t *testing.T) {
|
||||
tr := NewTrie(nil, newTestStore())
|
||||
tr := NewTrie(nil, false, newTestStore())
|
||||
items := []struct{ k, v string }{
|
||||
{"item with long key", "value1"},
|
||||
{"item with matching prefix", "value2"},
|
||||
|
|
@ -164,6 +202,21 @@ func TestTrie_BigPut(t *testing.T) {
|
|||
})
|
||||
}
|
||||
|
||||
func (tr *Trie) putToStore(n Node) {
|
||||
if n.Type() == HashT {
|
||||
panic("can't put hash node in trie")
|
||||
}
|
||||
if tr.refcountEnabled {
|
||||
tr.refcount[n.Hash()] = &cachedNode{
|
||||
bytes: n.Bytes(),
|
||||
refcount: 1,
|
||||
}
|
||||
tr.updateRefCount(n.Hash())
|
||||
} else {
|
||||
_ = tr.Store.Put(makeStorageKey(n.Hash().BytesBE()), n.Bytes())
|
||||
}
|
||||
}
|
||||
|
||||
func (tr *Trie) testHas(t *testing.T, key, value []byte) {
|
||||
v, err := tr.Get(key)
|
||||
if value == nil {
|
||||
|
|
@ -208,7 +261,7 @@ func TestTrie_Get(t *testing.T) {
|
|||
})
|
||||
t.Run("UnfoldRoot", func(t *testing.T) {
|
||||
tr := newTestTrie(t)
|
||||
single := NewTrie(NewHashNode(tr.root.Hash()), tr.Store)
|
||||
single := NewTrie(NewHashNode(tr.root.Hash()), false, tr.Store)
|
||||
single.testHas(t, []byte{0xAC}, nil)
|
||||
single.testHas(t, []byte{0xAC, 0x01}, []byte{0xAB, 0xCD})
|
||||
single.testHas(t, []byte{0xAC, 0x99}, []byte{0x22, 0x22})
|
||||
|
|
@ -223,13 +276,13 @@ func TestTrie_Flush(t *testing.T) {
|
|||
"key2": []byte("value2"),
|
||||
}
|
||||
|
||||
tr := NewTrie(nil, newTestStore())
|
||||
tr := NewTrie(nil, false, newTestStore())
|
||||
for k, v := range pairs {
|
||||
require.NoError(t, tr.Put([]byte(k), v))
|
||||
}
|
||||
|
||||
tr.Flush()
|
||||
tr = NewTrie(NewHashNode(tr.StateRoot()), tr.Store)
|
||||
tr = NewTrie(NewHashNode(tr.StateRoot()), false, tr.Store)
|
||||
for k, v := range pairs {
|
||||
actual, err := tr.Get([]byte(k))
|
||||
require.NoError(t, err)
|
||||
|
|
@ -238,10 +291,19 @@ func TestTrie_Flush(t *testing.T) {
|
|||
}
|
||||
|
||||
func TestTrie_Delete(t *testing.T) {
|
||||
t.Run("No GC", func(t *testing.T) {
|
||||
testTrieDelete(t, false)
|
||||
})
|
||||
t.Run("With GC", func(t *testing.T) {
|
||||
testTrieDelete(t, true)
|
||||
})
|
||||
}
|
||||
|
||||
func testTrieDelete(t *testing.T, enableGC bool) {
|
||||
t.Run("Hash", func(t *testing.T) {
|
||||
t.Run("FromStore", func(t *testing.T) {
|
||||
l := NewLeafNode([]byte{0x12})
|
||||
tr := NewTrie(NewHashNode(l.Hash()), newTestStore())
|
||||
tr := NewTrie(NewHashNode(l.Hash()), enableGC, newTestStore())
|
||||
t.Run("NotInStore", func(t *testing.T) {
|
||||
require.Error(t, tr.Delete([]byte{}))
|
||||
})
|
||||
|
|
@ -253,14 +315,14 @@ func TestTrie_Delete(t *testing.T) {
|
|||
})
|
||||
|
||||
t.Run("Empty", func(t *testing.T) {
|
||||
tr := NewTrie(nil, newTestStore())
|
||||
tr := NewTrie(nil, enableGC, newTestStore())
|
||||
require.Error(t, tr.Delete([]byte{}))
|
||||
})
|
||||
})
|
||||
|
||||
t.Run("Leaf", func(t *testing.T) {
|
||||
l := NewLeafNode([]byte{0x12, 0x34})
|
||||
tr := NewTrie(l, newTestStore())
|
||||
tr := NewTrie(l, enableGC, newTestStore())
|
||||
t.Run("NonExistentKey", func(t *testing.T) {
|
||||
require.Error(t, tr.Delete([]byte{0x12}))
|
||||
tr.testHas(t, []byte{}, []byte{0x12, 0x34})
|
||||
|
|
@ -273,7 +335,7 @@ func TestTrie_Delete(t *testing.T) {
|
|||
t.Run("SingleKey", func(t *testing.T) {
|
||||
l := NewLeafNode([]byte{0x12, 0x34})
|
||||
e := NewExtensionNode([]byte{0x0A, 0x0B}, l)
|
||||
tr := NewTrie(e, newTestStore())
|
||||
tr := NewTrie(e, enableGC, newTestStore())
|
||||
|
||||
t.Run("NonExistentKey", func(t *testing.T) {
|
||||
require.Error(t, tr.Delete([]byte{}))
|
||||
|
|
@ -289,7 +351,7 @@ func TestTrie_Delete(t *testing.T) {
|
|||
b.Children[0] = NewExtensionNode([]byte{0x01}, NewLeafNode([]byte{0x12, 0x34}))
|
||||
b.Children[6] = NewExtensionNode([]byte{0x07}, NewLeafNode([]byte{0x56, 0x78}))
|
||||
e := NewExtensionNode([]byte{0x01, 0x02}, b)
|
||||
tr := NewTrie(e, newTestStore())
|
||||
tr := NewTrie(e, enableGC, newTestStore())
|
||||
|
||||
h := e.Hash()
|
||||
require.NoError(t, tr.Delete([]byte{0x12, 0x01}))
|
||||
|
|
@ -308,7 +370,7 @@ func TestTrie_Delete(t *testing.T) {
|
|||
b.Children[lastChild] = NewLeafNode([]byte{0x12})
|
||||
b.Children[0] = NewExtensionNode([]byte{0x01}, NewLeafNode([]byte{0x34}))
|
||||
b.Children[1] = NewExtensionNode([]byte{0x06}, NewLeafNode([]byte{0x56}))
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, enableGC, newTestStore())
|
||||
require.NoError(t, tr.Delete([]byte{0x16}))
|
||||
tr.testHas(t, []byte{}, []byte{0x12})
|
||||
tr.testHas(t, []byte{0x01}, []byte{0x34})
|
||||
|
|
@ -321,7 +383,7 @@ func TestTrie_Delete(t *testing.T) {
|
|||
l := NewLeafNode([]byte{0x34})
|
||||
e := NewExtensionNode([]byte{0x06}, l)
|
||||
b.Children[5] = NewHashNode(e.Hash())
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, enableGC, newTestStore())
|
||||
tr.putToStore(l)
|
||||
tr.putToStore(e)
|
||||
return tr
|
||||
|
|
@ -344,7 +406,7 @@ func TestTrie_Delete(t *testing.T) {
|
|||
b := NewBranchNode()
|
||||
b.Children[lastChild] = NewLeafNode([]byte{0x12})
|
||||
b.Children[5] = c
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, enableGC, newTestStore())
|
||||
|
||||
require.NoError(t, tr.Delete([]byte{}))
|
||||
tr.testHas(t, []byte{}, nil)
|
||||
|
|
@ -396,7 +458,7 @@ func TestTrie_Collapse(t *testing.T) {
|
|||
b.Children[0] = e
|
||||
hb := b.Hash()
|
||||
|
||||
tr := NewTrie(b, newTestStore())
|
||||
tr := NewTrie(b, false, newTestStore())
|
||||
tr.Collapse(1)
|
||||
|
||||
newb, ok := tr.root.(*BranchNode)
|
||||
|
|
@ -410,7 +472,7 @@ func TestTrie_Collapse(t *testing.T) {
|
|||
hl := l.Hash()
|
||||
e := NewExtensionNode([]byte{0x01}, l)
|
||||
h := e.Hash()
|
||||
tr := NewTrie(e, newTestStore())
|
||||
tr := NewTrie(e, false, newTestStore())
|
||||
tr.Collapse(1)
|
||||
|
||||
newe, ok := tr.root.(*ExtensionNode)
|
||||
|
|
@ -421,13 +483,13 @@ func TestTrie_Collapse(t *testing.T) {
|
|||
})
|
||||
t.Run("Leaf", func(t *testing.T) {
|
||||
l := NewLeafNode([]byte("value"))
|
||||
tr := NewTrie(l, newTestStore())
|
||||
tr := NewTrie(l, false, newTestStore())
|
||||
tr.Collapse(10)
|
||||
require.Equal(t, NewLeafNode([]byte("value")), tr.root)
|
||||
})
|
||||
t.Run("Hash", func(t *testing.T) {
|
||||
t.Run("Empty", func(t *testing.T) {
|
||||
tr := NewTrie(new(HashNode), newTestStore())
|
||||
tr := NewTrie(new(HashNode), false, newTestStore())
|
||||
require.NotPanics(t, func() { tr.Collapse(1) })
|
||||
hn, ok := tr.root.(*HashNode)
|
||||
require.True(t, ok)
|
||||
|
|
@ -436,7 +498,7 @@ func TestTrie_Collapse(t *testing.T) {
|
|||
|
||||
h := random.Uint256()
|
||||
hn := NewHashNode(h)
|
||||
tr := NewTrie(hn, newTestStore())
|
||||
tr := NewTrie(hn, false, newTestStore())
|
||||
tr.Collapse(10)
|
||||
|
||||
newRoot, ok := tr.root.(*HashNode)
|
||||
|
|
|
|||
Loading…
Reference in a new issue