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core, eth, trie: prepare trie sync for path based operation
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@karalabe
karalabe committed Sep 2, 2020
1 parent 5883afb commit eeaf191
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Showing 6 changed files with 480 additions and 105 deletions.
127 changes: 103 additions & 24 deletions core/state/sync_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ import (
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/ethdb/memorydb"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
)

Expand All @@ -44,7 +45,7 @@ func makeTestState() (Database, common.Hash, []*testAccount) {
state, _ := New(common.Hash{}, db, nil)

// Fill it with some arbitrary data
accounts := []*testAccount{}
var accounts []*testAccount
for i := byte(0); i < 96; i++ {
obj := state.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
acc := &testAccount{address: common.BytesToAddress([]byte{i})}
Expand All @@ -59,6 +60,11 @@ func makeTestState() (Database, common.Hash, []*testAccount) {
obj.SetCode(crypto.Keccak256Hash([]byte{i, i, i, i, i}), []byte{i, i, i, i, i})
acc.code = []byte{i, i, i, i, i}
}
if i%5 == 0 {
for j := byte(0); j < 5; j++ {
obj.SetState(db, crypto.Keccak256Hash([]byte{i, i, i, i, i, j, j}), crypto.Keccak256Hash([]byte{i, i, i, i, i, j, j}))
}
}
state.updateStateObject(obj)
accounts = append(accounts, acc)
}
Expand Down Expand Up @@ -126,52 +132,109 @@ func checkStateConsistency(db ethdb.Database, root common.Hash) error {
// Tests that an empty state is not scheduled for syncing.
func TestEmptyStateSync(t *testing.T) {
empty := common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
if req := NewStateSync(empty, rawdb.NewMemoryDatabase(), trie.NewSyncBloom(1, memorydb.New())).Missing(1); len(req) != 0 {
t.Errorf("content requested for empty state: %v", req)
sync := NewStateSync(empty, rawdb.NewMemoryDatabase(), trie.NewSyncBloom(1, memorydb.New()))
if nodes, paths, codes := sync.Missing(1); len(nodes) != 0 || len(paths) != 0 || len(codes) != 0 {
t.Errorf(" content requested for empty state: %v, %v, %v", nodes, paths, codes)
}
}

// Tests that given a root hash, a state can sync iteratively on a single thread,
// requesting retrieval tasks and returning all of them in one go.
func TestIterativeStateSyncIndividual(t *testing.T) { testIterativeStateSync(t, 1, false) }
func TestIterativeStateSyncBatched(t *testing.T) { testIterativeStateSync(t, 100, false) }
func TestIterativeStateSyncIndividualFromDisk(t *testing.T) { testIterativeStateSync(t, 1, true) }
func TestIterativeStateSyncBatchedFromDisk(t *testing.T) { testIterativeStateSync(t, 100, true) }
func TestIterativeStateSyncIndividual(t *testing.T) {
testIterativeStateSync(t, 1, false, false)
}
func TestIterativeStateSyncBatched(t *testing.T) {
testIterativeStateSync(t, 100, false, false)
}
func TestIterativeStateSyncIndividualFromDisk(t *testing.T) {
testIterativeStateSync(t, 1, true, false)
}
func TestIterativeStateSyncBatchedFromDisk(t *testing.T) {
testIterativeStateSync(t, 100, true, false)
}
func TestIterativeStateSyncIndividualByPath(t *testing.T) {
testIterativeStateSync(t, 1, false, true)
}
func TestIterativeStateSyncBatchedByPath(t *testing.T) {
testIterativeStateSync(t, 100, false, true)
}

func testIterativeStateSync(t *testing.T, count int, commit bool) {
func testIterativeStateSync(t *testing.T, count int, commit bool, bypath bool) {
// Create a random state to copy
srcDb, srcRoot, srcAccounts := makeTestState()
if commit {
srcDb.TrieDB().Commit(srcRoot, false, nil)
}
srcTrie, _ := trie.New(srcRoot, srcDb.TrieDB())

// Create a destination state and sync with the scheduler
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb))

queue := append([]common.Hash{}, sched.Missing(count)...)
for len(queue) > 0 {
results := make([]trie.SyncResult, len(queue))
for i, hash := range queue {
nodes, paths, codes := sched.Missing(count)
var (
hashQueue []common.Hash
pathQueue []trie.SyncPath
)
if !bypath {
hashQueue = append(append(hashQueue[:0], nodes...), codes...)
} else {
hashQueue = append(hashQueue[:0], codes...)
pathQueue = append(pathQueue[:0], paths...)
}
for len(hashQueue)+len(pathQueue) > 0 {
results := make([]trie.SyncResult, len(hashQueue)+len(pathQueue))
for i, hash := range hashQueue {
data, err := srcDb.TrieDB().Node(hash)
if err != nil {
data, err = srcDb.ContractCode(common.Hash{}, hash)
}
if err != nil {
t.Fatalf("failed to retrieve node data for %x", hash)
t.Fatalf("failed to retrieve node data for hash %x", hash)
}
results[i] = trie.SyncResult{Hash: hash, Data: data}
}
for i, path := range pathQueue {
if len(path) == 1 {
data, _, err := srcTrie.TryGetNode(path[0])
if err != nil {
t.Fatalf("failed to retrieve node data for path %x: %v", path, err)
}
results[len(hashQueue)+i] = trie.SyncResult{Hash: crypto.Keccak256Hash(data), Data: data}
} else {
var acc Account
if err := rlp.DecodeBytes(srcTrie.Get(path[0]), &acc); err != nil {
t.Fatalf("failed to decode account on path %x: %v", path, err)
}
stTrie, err := trie.New(acc.Root, srcDb.TrieDB())
if err != nil {
t.Fatalf("failed to retriev storage trie for path %x: %v", path, err)
}
data, _, err := stTrie.TryGetNode(path[1])
if err != nil {
t.Fatalf("failed to retrieve node data for path %x: %v", path, err)
}
results[len(hashQueue)+i] = trie.SyncResult{Hash: crypto.Keccak256Hash(data), Data: data}
}
}
for _, result := range results {
if err := sched.Process(result); err != nil {
t.Fatalf("failed to process result %v", err)
t.Errorf("failed to process result %v", err)
}
}
batch := dstDb.NewBatch()
if err := sched.Commit(batch); err != nil {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
queue = append(queue[:0], sched.Missing(count)...)

nodes, paths, codes = sched.Missing(count)
if !bypath {
hashQueue = append(append(hashQueue[:0], nodes...), codes...)
} else {
hashQueue = append(hashQueue[:0], codes...)
pathQueue = append(pathQueue[:0], paths...)
}
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
Expand All @@ -187,7 +250,9 @@ func TestIterativeDelayedStateSync(t *testing.T) {
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb))

queue := append([]common.Hash{}, sched.Missing(0)...)
nodes, _, codes := sched.Missing(0)
queue := append(append([]common.Hash{}, nodes...), codes...)

for len(queue) > 0 {
// Sync only half of the scheduled nodes
results := make([]trie.SyncResult, len(queue)/2+1)
Expand All @@ -211,7 +276,9 @@ func TestIterativeDelayedStateSync(t *testing.T) {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
queue = append(queue[len(results):], sched.Missing(0)...)

nodes, _, codes = sched.Missing(0)
queue = append(append(queue[len(results):], nodes...), codes...)
}
// Cross check that the two states are in sync
checkStateAccounts(t, dstDb, srcRoot, srcAccounts)
Expand All @@ -232,7 +299,8 @@ func testIterativeRandomStateSync(t *testing.T, count int) {
sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb))

queue := make(map[common.Hash]struct{})
for _, hash := range sched.Missing(count) {
nodes, _, codes := sched.Missing(count)
for _, hash := range append(nodes, codes...) {
queue[hash] = struct{}{}
}
for len(queue) > 0 {
Expand All @@ -259,8 +327,10 @@ func testIterativeRandomStateSync(t *testing.T, count int) {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()

queue = make(map[common.Hash]struct{})
for _, hash := range sched.Missing(count) {
nodes, _, codes = sched.Missing(count)
for _, hash := range append(nodes, codes...) {
queue[hash] = struct{}{}
}
}
Expand All @@ -279,7 +349,8 @@ func TestIterativeRandomDelayedStateSync(t *testing.T) {
sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb))

queue := make(map[common.Hash]struct{})
for _, hash := range sched.Missing(0) {
nodes, _, codes := sched.Missing(0)
for _, hash := range append(nodes, codes...) {
queue[hash] = struct{}{}
}
for len(queue) > 0 {
Expand Down Expand Up @@ -312,7 +383,11 @@ func TestIterativeRandomDelayedStateSync(t *testing.T) {
t.Fatalf("failed to commit data: %v", err)
}
batch.Write()
for _, hash := range sched.Missing(0) {
for _, result := range results {
delete(queue, result.Hash)
}
nodes, _, codes = sched.Missing(0)
for _, hash := range append(nodes, codes...) {
queue[hash] = struct{}{}
}
}
Expand Down Expand Up @@ -341,8 +416,11 @@ func TestIncompleteStateSync(t *testing.T) {
dstDb := rawdb.NewMemoryDatabase()
sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb))

added := []common.Hash{}
queue := append([]common.Hash{}, sched.Missing(1)...)
var added []common.Hash

nodes, _, codes := sched.Missing(1)
queue := append(append([]common.Hash{}, nodes...), codes...)

for len(queue) > 0 {
// Fetch a batch of state nodes
results := make([]trie.SyncResult, len(queue))
Expand Down Expand Up @@ -382,7 +460,8 @@ func TestIncompleteStateSync(t *testing.T) {
}
}
// Fetch the next batch to retrieve
queue = append(queue[:0], sched.Missing(1)...)
nodes, _, codes = sched.Missing(1)
queue = append(append(queue[:0], nodes...), codes...)
}
// Sanity check that removing any node from the database is detected
for _, node := range added[1:] {
Expand Down
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