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sync_test.go
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sync_test.go
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// Copyright 2021 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package snap
import (
"bytes"
"crypto/rand"
"encoding/binary"
"fmt"
"math/big"
"sort"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
"golang.org/x/crypto/sha3"
)
func TestHashing(t *testing.T) {
t.Parallel()
var bytecodes = make([][]byte, 10)
for i := 0; i < len(bytecodes); i++ {
buf := make([]byte, 100)
rand.Read(buf)
bytecodes[i] = buf
}
var want, got string
var old = func() {
hasher := sha3.NewLegacyKeccak256()
for i := 0; i < len(bytecodes); i++ {
hasher.Reset()
hasher.Write(bytecodes[i])
hash := hasher.Sum(nil)
got = fmt.Sprintf("%v\n%v", got, hash)
}
}
var new = func() {
hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
var hash = make([]byte, 32)
for i := 0; i < len(bytecodes); i++ {
hasher.Reset()
hasher.Write(bytecodes[i])
hasher.Read(hash)
want = fmt.Sprintf("%v\n%v", want, hash)
}
}
old()
new()
if want != got {
t.Errorf("want\n%v\ngot\n%v\n", want, got)
}
}
func BenchmarkHashing(b *testing.B) {
var bytecodes = make([][]byte, 10000)
for i := 0; i < len(bytecodes); i++ {
buf := make([]byte, 100)
rand.Read(buf)
bytecodes[i] = buf
}
var old = func() {
hasher := sha3.NewLegacyKeccak256()
for i := 0; i < len(bytecodes); i++ {
hasher.Reset()
hasher.Write(bytecodes[i])
hasher.Sum(nil)
}
}
var new = func() {
hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
var hash = make([]byte, 32)
for i := 0; i < len(bytecodes); i++ {
hasher.Reset()
hasher.Write(bytecodes[i])
hasher.Read(hash)
}
}
b.Run("old", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
old()
}
})
b.Run("new", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
new()
}
})
}
type (
accountHandlerFunc func(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error
storageHandlerFunc func(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error
trieHandlerFunc func(t *testPeer, requestId uint64, root common.Hash, paths []TrieNodePathSet, cap uint64) error
codeHandlerFunc func(t *testPeer, id uint64, hashes []common.Hash, max uint64) error
)
type testPeer struct {
id string
test *testing.T
remote *Syncer
logger log.Logger
accountTrie *trie.Trie
accountValues entrySlice
storageTries map[common.Hash]*trie.Trie
storageValues map[common.Hash]entrySlice
accountRequestHandler accountHandlerFunc
storageRequestHandler storageHandlerFunc
trieRequestHandler trieHandlerFunc
codeRequestHandler codeHandlerFunc
term func()
// counters
nAccountRequests int
nStorageRequests int
nBytecodeRequests int
nTrienodeRequests int
}
func newTestPeer(id string, t *testing.T, term func()) *testPeer {
peer := &testPeer{
id: id,
test: t,
logger: log.New("id", id),
accountRequestHandler: defaultAccountRequestHandler,
trieRequestHandler: defaultTrieRequestHandler,
storageRequestHandler: defaultStorageRequestHandler,
codeRequestHandler: defaultCodeRequestHandler,
term: term,
}
//stderrHandler := log.StreamHandler(os.Stderr, log.TerminalFormat(true))
//peer.logger.SetHandler(stderrHandler)
return peer
}
func (t *testPeer) ID() string { return t.id }
func (t *testPeer) Log() log.Logger { return t.logger }
func (t *testPeer) Stats() string {
return fmt.Sprintf(`Account requests: %d
Storage requests: %d
Bytecode requests: %d
Trienode requests: %d
`, t.nAccountRequests, t.nStorageRequests, t.nBytecodeRequests, t.nTrienodeRequests)
}
func (t *testPeer) RequestAccountRange(id uint64, root, origin, limit common.Hash, bytes uint64) error {
t.logger.Trace("Fetching range of accounts", "reqid", id, "root", root, "origin", origin, "limit", limit, "bytes", common.StorageSize(bytes))
t.nAccountRequests++
go t.accountRequestHandler(t, id, root, origin, limit, bytes)
return nil
}
func (t *testPeer) RequestTrieNodes(id uint64, root common.Hash, paths []TrieNodePathSet, bytes uint64) error {
t.logger.Trace("Fetching set of trie nodes", "reqid", id, "root", root, "pathsets", len(paths), "bytes", common.StorageSize(bytes))
t.nTrienodeRequests++
go t.trieRequestHandler(t, id, root, paths, bytes)
return nil
}
func (t *testPeer) RequestStorageRanges(id uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, bytes uint64) error {
t.nStorageRequests++
if len(accounts) == 1 && origin != nil {
t.logger.Trace("Fetching range of large storage slots", "reqid", id, "root", root, "account", accounts[0], "origin", common.BytesToHash(origin), "limit", common.BytesToHash(limit), "bytes", common.StorageSize(bytes))
} else {
t.logger.Trace("Fetching ranges of small storage slots", "reqid", id, "root", root, "accounts", len(accounts), "first", accounts[0], "bytes", common.StorageSize(bytes))
}
go t.storageRequestHandler(t, id, root, accounts, origin, limit, bytes)
return nil
}
func (t *testPeer) RequestByteCodes(id uint64, hashes []common.Hash, bytes uint64) error {
t.nBytecodeRequests++
t.logger.Trace("Fetching set of byte codes", "reqid", id, "hashes", len(hashes), "bytes", common.StorageSize(bytes))
go t.codeRequestHandler(t, id, hashes, bytes)
return nil
}
// defaultTrieRequestHandler is a well-behaving handler for trie healing requests
func defaultTrieRequestHandler(t *testPeer, requestId uint64, root common.Hash, paths []TrieNodePathSet, cap uint64) error {
// Pass the response
var nodes [][]byte
for _, pathset := range paths {
switch len(pathset) {
case 1:
blob, _, err := t.accountTrie.TryGetNode(pathset[0])
if err != nil {
t.logger.Info("Error handling req", "error", err)
break
}
nodes = append(nodes, blob)
default:
account := t.storageTries[(common.BytesToHash(pathset[0]))]
for _, path := range pathset[1:] {
blob, _, err := account.TryGetNode(path)
if err != nil {
t.logger.Info("Error handling req", "error", err)
break
}
nodes = append(nodes, blob)
}
}
}
t.remote.OnTrieNodes(t, requestId, nodes)
return nil
}
// defaultAccountRequestHandler is a well-behaving handler for AccountRangeRequests
func defaultAccountRequestHandler(t *testPeer, id uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
keys, vals, proofs := createAccountRequestResponse(t, root, origin, limit, cap)
if err := t.remote.OnAccounts(t, id, keys, vals, proofs); err != nil {
t.test.Errorf("Remote side rejected our delivery: %v", err)
t.term()
return err
}
return nil
}
func createAccountRequestResponse(t *testPeer, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) (keys []common.Hash, vals [][]byte, proofs [][]byte) {
var size uint64
if limit == (common.Hash{}) {
limit = common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
}
for _, entry := range t.accountValues {
if size > cap {
break
}
if bytes.Compare(origin[:], entry.k) <= 0 {
keys = append(keys, common.BytesToHash(entry.k))
vals = append(vals, entry.v)
size += uint64(32 + len(entry.v))
}
// If we've exceeded the request threshold, abort
if bytes.Compare(entry.k, limit[:]) >= 0 {
break
}
}
// Unless we send the entire trie, we need to supply proofs
// Actually, we need to supply proofs either way! This seems to be an implementation
// quirk in go-ethereum
proof := light.NewNodeSet()
if err := t.accountTrie.Prove(origin[:], 0, proof); err != nil {
t.logger.Error("Could not prove inexistence of origin", "origin", origin, "error", err)
}
if len(keys) > 0 {
lastK := (keys[len(keys)-1])[:]
if err := t.accountTrie.Prove(lastK, 0, proof); err != nil {
t.logger.Error("Could not prove last item", "error", err)
}
}
for _, blob := range proof.NodeList() {
proofs = append(proofs, blob)
}
return keys, vals, proofs
}
// defaultStorageRequestHandler is a well-behaving storage request handler
func defaultStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, bOrigin, bLimit []byte, max uint64) error {
hashes, slots, proofs := createStorageRequestResponse(t, root, accounts, bOrigin, bLimit, max)
if err := t.remote.OnStorage(t, requestId, hashes, slots, proofs); err != nil {
t.test.Errorf("Remote side rejected our delivery: %v", err)
t.term()
}
return nil
}
func defaultCodeRequestHandler(t *testPeer, id uint64, hashes []common.Hash, max uint64) error {
var bytecodes [][]byte
for _, h := range hashes {
bytecodes = append(bytecodes, getCodeByHash(h))
}
if err := t.remote.OnByteCodes(t, id, bytecodes); err != nil {
t.test.Errorf("Remote side rejected our delivery: %v", err)
t.term()
}
return nil
}
func createStorageRequestResponse(t *testPeer, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) (hashes [][]common.Hash, slots [][][]byte, proofs [][]byte) {
var size uint64
for _, account := range accounts {
// The first account might start from a different origin and end sooner
var originHash common.Hash
if len(origin) > 0 {
originHash = common.BytesToHash(origin)
}
var limitHash = common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
if len(limit) > 0 {
limitHash = common.BytesToHash(limit)
}
var (
keys []common.Hash
vals [][]byte
abort bool
)
for _, entry := range t.storageValues[account] {
if size >= max {
abort = true
break
}
if bytes.Compare(entry.k, originHash[:]) < 0 {
continue
}
keys = append(keys, common.BytesToHash(entry.k))
vals = append(vals, entry.v)
size += uint64(32 + len(entry.v))
if bytes.Compare(entry.k, limitHash[:]) >= 0 {
break
}
}
if len(keys) > 0 {
hashes = append(hashes, keys)
slots = append(slots, vals)
}
// Generate the Merkle proofs for the first and last storage slot, but
// only if the response was capped. If the entire storage trie included
// in the response, no need for any proofs.
if originHash != (common.Hash{}) || (abort && len(keys) > 0) {
// If we're aborting, we need to prove the first and last item
// This terminates the response (and thus the loop)
proof := light.NewNodeSet()
stTrie := t.storageTries[account]
// Here's a potential gotcha: when constructing the proof, we cannot
// use the 'origin' slice directly, but must use the full 32-byte
// hash form.
if err := stTrie.Prove(originHash[:], 0, proof); err != nil {
t.logger.Error("Could not prove inexistence of origin", "origin", originHash, "error", err)
}
if len(keys) > 0 {
lastK := (keys[len(keys)-1])[:]
if err := stTrie.Prove(lastK, 0, proof); err != nil {
t.logger.Error("Could not prove last item", "error", err)
}
}
for _, blob := range proof.NodeList() {
proofs = append(proofs, blob)
}
break
}
}
return hashes, slots, proofs
}
// the createStorageRequestResponseAlwaysProve tests a cornercase, where it always
// supplies the proof for the last account, even if it is 'complete'.h
func createStorageRequestResponseAlwaysProve(t *testPeer, root common.Hash, accounts []common.Hash, bOrigin, bLimit []byte, max uint64) (hashes [][]common.Hash, slots [][][]byte, proofs [][]byte) {
var size uint64
max = max * 3 / 4
var origin common.Hash
if len(bOrigin) > 0 {
origin = common.BytesToHash(bOrigin)
}
var exit bool
for i, account := range accounts {
var keys []common.Hash
var vals [][]byte
for _, entry := range t.storageValues[account] {
if bytes.Compare(entry.k, origin[:]) < 0 {
exit = true
}
keys = append(keys, common.BytesToHash(entry.k))
vals = append(vals, entry.v)
size += uint64(32 + len(entry.v))
if size > max {
exit = true
}
}
if i == len(accounts)-1 {
exit = true
}
hashes = append(hashes, keys)
slots = append(slots, vals)
if exit {
// If we're aborting, we need to prove the first and last item
// This terminates the response (and thus the loop)
proof := light.NewNodeSet()
stTrie := t.storageTries[account]
// Here's a potential gotcha: when constructing the proof, we cannot
// use the 'origin' slice directly, but must use the full 32-byte
// hash form.
if err := stTrie.Prove(origin[:], 0, proof); err != nil {
t.logger.Error("Could not prove inexistence of origin", "origin", origin,
"error", err)
}
if len(keys) > 0 {
lastK := (keys[len(keys)-1])[:]
if err := stTrie.Prove(lastK, 0, proof); err != nil {
t.logger.Error("Could not prove last item", "error", err)
}
}
for _, blob := range proof.NodeList() {
proofs = append(proofs, blob)
}
break
}
}
return hashes, slots, proofs
}
// emptyRequestAccountRangeFn is a rejects AccountRangeRequests
func emptyRequestAccountRangeFn(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
t.remote.OnAccounts(t, requestId, nil, nil, nil)
return nil
}
func nonResponsiveRequestAccountRangeFn(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
return nil
}
func emptyTrieRequestHandler(t *testPeer, requestId uint64, root common.Hash, paths []TrieNodePathSet, cap uint64) error {
t.remote.OnTrieNodes(t, requestId, nil)
return nil
}
func nonResponsiveTrieRequestHandler(t *testPeer, requestId uint64, root common.Hash, paths []TrieNodePathSet, cap uint64) error {
return nil
}
func emptyStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
t.remote.OnStorage(t, requestId, nil, nil, nil)
return nil
}
func nonResponsiveStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
return nil
}
func proofHappyStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
hashes, slots, proofs := createStorageRequestResponseAlwaysProve(t, root, accounts, origin, limit, max)
if err := t.remote.OnStorage(t, requestId, hashes, slots, proofs); err != nil {
t.test.Errorf("Remote side rejected our delivery: %v", err)
t.term()
}
return nil
}
//func emptyCodeRequestHandler(t *testPeer, id uint64, hashes []common.Hash, max uint64) error {
// var bytecodes [][]byte
// t.remote.OnByteCodes(t, id, bytecodes)
// return nil
//}
func corruptCodeRequestHandler(t *testPeer, id uint64, hashes []common.Hash, max uint64) error {
var bytecodes [][]byte
for _, h := range hashes {
// Send back the hashes
bytecodes = append(bytecodes, h[:])
}
if err := t.remote.OnByteCodes(t, id, bytecodes); err != nil {
t.logger.Info("remote error on delivery (as expected)", "error", err)
// Mimic the real-life handler, which drops a peer on errors
t.remote.Unregister(t.id)
}
return nil
}
func cappedCodeRequestHandler(t *testPeer, id uint64, hashes []common.Hash, max uint64) error {
var bytecodes [][]byte
for _, h := range hashes[:1] {
bytecodes = append(bytecodes, getCodeByHash(h))
}
// Missing bytecode can be retrieved again, no error expected
if err := t.remote.OnByteCodes(t, id, bytecodes); err != nil {
t.test.Errorf("Remote side rejected our delivery: %v", err)
t.term()
}
return nil
}
// starvingStorageRequestHandler is somewhat well-behaving storage handler, but it caps the returned results to be very small
func starvingStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
return defaultStorageRequestHandler(t, requestId, root, accounts, origin, limit, 500)
}
func starvingAccountRequestHandler(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
return defaultAccountRequestHandler(t, requestId, root, origin, limit, 500)
}
//func misdeliveringAccountRequestHandler(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, cap uint64) error {
// return defaultAccountRequestHandler(t, requestId-1, root, origin, 500)
//}
func corruptAccountRequestHandler(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
hashes, accounts, proofs := createAccountRequestResponse(t, root, origin, limit, cap)
if len(proofs) > 0 {
proofs = proofs[1:]
}
if err := t.remote.OnAccounts(t, requestId, hashes, accounts, proofs); err != nil {
t.logger.Info("remote error on delivery (as expected)", "error", err)
// Mimic the real-life handler, which drops a peer on errors
t.remote.Unregister(t.id)
}
return nil
}
// corruptStorageRequestHandler doesn't provide good proofs
func corruptStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
hashes, slots, proofs := createStorageRequestResponse(t, root, accounts, origin, limit, max)
if len(proofs) > 0 {
proofs = proofs[1:]
}
if err := t.remote.OnStorage(t, requestId, hashes, slots, proofs); err != nil {
t.logger.Info("remote error on delivery (as expected)", "error", err)
// Mimic the real-life handler, which drops a peer on errors
t.remote.Unregister(t.id)
}
return nil
}
func noProofStorageRequestHandler(t *testPeer, requestId uint64, root common.Hash, accounts []common.Hash, origin, limit []byte, max uint64) error {
hashes, slots, _ := createStorageRequestResponse(t, root, accounts, origin, limit, max)
if err := t.remote.OnStorage(t, requestId, hashes, slots, nil); err != nil {
t.logger.Info("remote error on delivery (as expected)", "error", err)
// Mimic the real-life handler, which drops a peer on errors
t.remote.Unregister(t.id)
}
return nil
}
// TestSyncBloatedProof tests a scenario where we provide only _one_ value, but
// also ship the entire trie inside the proof. If the attack is successful,
// the remote side does not do any follow-up requests
func TestSyncBloatedProof(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeAccountTrieNoStorage(100)
source := newTestPeer("source", t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
source.accountRequestHandler = func(t *testPeer, requestId uint64, root common.Hash, origin common.Hash, limit common.Hash, cap uint64) error {
var (
proofs [][]byte
keys []common.Hash
vals [][]byte
)
// The values
for _, entry := range t.accountValues {
if bytes.Compare(entry.k, origin[:]) < 0 {
continue
}
if bytes.Compare(entry.k, limit[:]) > 0 {
continue
}
keys = append(keys, common.BytesToHash(entry.k))
vals = append(vals, entry.v)
}
// The proofs
proof := light.NewNodeSet()
if err := t.accountTrie.Prove(origin[:], 0, proof); err != nil {
t.logger.Error("Could not prove origin", "origin", origin, "error", err)
}
// The bloat: add proof of every single element
for _, entry := range t.accountValues {
if err := t.accountTrie.Prove(entry.k, 0, proof); err != nil {
t.logger.Error("Could not prove item", "error", err)
}
}
// And remove one item from the elements
if len(keys) > 2 {
keys = append(keys[:1], keys[2:]...)
vals = append(vals[:1], vals[2:]...)
}
for _, blob := range proof.NodeList() {
proofs = append(proofs, blob)
}
if err := t.remote.OnAccounts(t, requestId, keys, vals, proofs); err != nil {
t.logger.Info("remote error on delivery (as expected)", "error", err)
t.term()
// This is actually correct, signal to exit the test successfully
}
return nil
}
syncer := setupSyncer(source)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err == nil {
t.Fatal("No error returned from incomplete/cancelled sync")
}
}
func setupSyncer(peers ...*testPeer) *Syncer {
stateDb := rawdb.NewMemoryDatabase()
syncer := NewSyncer(stateDb)
for _, peer := range peers {
syncer.Register(peer)
peer.remote = syncer
}
return syncer
}
// TestSync tests a basic sync with one peer
func TestSync(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeAccountTrieNoStorage(100)
mkSource := func(name string) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
return source
}
syncer := setupSyncer(mkSource("source"))
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestSyncTinyTriePanic tests a basic sync with one peer, and a tiny trie. This caused a
// panic within the prover
func TestSyncTinyTriePanic(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeAccountTrieNoStorage(1)
mkSource := func(name string) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
return source
}
syncer := setupSyncer(mkSource("source"))
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestMultiSync tests a basic sync with multiple peers
func TestMultiSync(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeAccountTrieNoStorage(100)
mkSource := func(name string) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
return source
}
syncer := setupSyncer(mkSource("sourceA"), mkSource("sourceB"))
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestSyncWithStorage tests basic sync using accounts + storage + code
func TestSyncWithStorage(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems, storageTries, storageElems := makeAccountTrieWithStorage(3, 3000, true, false)
mkSource := func(name string) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
source.storageTries = storageTries
source.storageValues = storageElems
return source
}
syncer := setupSyncer(mkSource("sourceA"))
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestMultiSyncManyUseless contains one good peer, and many which doesn't return anything valuable at all
func TestMultiSyncManyUseless(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems, storageTries, storageElems := makeAccountTrieWithStorage(100, 3000, true, false)
mkSource := func(name string, noAccount, noStorage, noTrieNode bool) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
source.storageTries = storageTries
source.storageValues = storageElems
if !noAccount {
source.accountRequestHandler = emptyRequestAccountRangeFn
}
if !noStorage {
source.storageRequestHandler = emptyStorageRequestHandler
}
if !noTrieNode {
source.trieRequestHandler = emptyTrieRequestHandler
}
return source
}
syncer := setupSyncer(
mkSource("full", true, true, true),
mkSource("noAccounts", false, true, true),
mkSource("noStorage", true, false, true),
mkSource("noTrie", true, true, false),
)
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestMultiSyncManyUseless contains one good peer, and many which doesn't return anything valuable at all
func TestMultiSyncManyUselessWithLowTimeout(t *testing.T) {
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems, storageTries, storageElems := makeAccountTrieWithStorage(100, 3000, true, false)
mkSource := func(name string, noAccount, noStorage, noTrieNode bool) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
source.storageTries = storageTries
source.storageValues = storageElems
if !noAccount {
source.accountRequestHandler = emptyRequestAccountRangeFn
}
if !noStorage {
source.storageRequestHandler = emptyStorageRequestHandler
}
if !noTrieNode {
source.trieRequestHandler = emptyTrieRequestHandler
}
return source
}
syncer := setupSyncer(
mkSource("full", true, true, true),
mkSource("noAccounts", false, true, true),
mkSource("noStorage", true, false, true),
mkSource("noTrie", true, true, false),
)
// We're setting the timeout to very low, to increase the chance of the timeout
// being triggered. This was previously a cause of panic, when a response
// arrived simultaneously as a timeout was triggered.
syncer.rates.OverrideTTLLimit = time.Millisecond
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestMultiSyncManyUnresponsive contains one good peer, and many which doesn't respond at all
func TestMultiSyncManyUnresponsive(t *testing.T) {
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems, storageTries, storageElems := makeAccountTrieWithStorage(100, 3000, true, false)
mkSource := func(name string, noAccount, noStorage, noTrieNode bool) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
source.storageTries = storageTries
source.storageValues = storageElems
if !noAccount {
source.accountRequestHandler = nonResponsiveRequestAccountRangeFn
}
if !noStorage {
source.storageRequestHandler = nonResponsiveStorageRequestHandler
}
if !noTrieNode {
source.trieRequestHandler = nonResponsiveTrieRequestHandler
}
return source
}
syncer := setupSyncer(
mkSource("full", true, true, true),
mkSource("noAccounts", false, true, true),
mkSource("noStorage", true, false, true),
mkSource("noTrie", true, true, false),
)
// We're setting the timeout to very low, to make the test run a bit faster
syncer.rates.OverrideTTLLimit = time.Millisecond
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
func checkStall(t *testing.T, term func()) chan struct{} {
testDone := make(chan struct{})
go func() {
select {
case <-time.After(time.Minute): // TODO(karalabe): Make tests smaller, this is too much
t.Log("Sync stalled")
term()
case <-testDone:
return
}
}()
return testDone
}
// TestSyncBoundaryAccountTrie tests sync against a few normal peers, but the
// account trie has a few boundary elements.
func TestSyncBoundaryAccountTrie(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeBoundaryAccountTrie(3000)
mkSource := func(name string) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
return source
}
syncer := setupSyncer(
mkSource("peer-a"),
mkSource("peer-b"),
)
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestSyncNoStorageAndOneCappedPeer tests sync using accounts and no storage, where one peer is
// consistently returning very small results
func TestSyncNoStorageAndOneCappedPeer(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)
sourceAccountTrie, elems := makeAccountTrieNoStorage(3000)
mkSource := func(name string, slow bool) *testPeer {
source := newTestPeer(name, t, term)
source.accountTrie = sourceAccountTrie
source.accountValues = elems
if slow {
source.accountRequestHandler = starvingAccountRequestHandler
}
return source
}
syncer := setupSyncer(
mkSource("nice-a", false),
mkSource("nice-b", false),
mkSource("nice-c", false),
mkSource("capped", true),
)
done := checkStall(t, term)
if err := syncer.Sync(sourceAccountTrie.Hash(), cancel); err != nil {
t.Fatalf("sync failed: %v", err)
}
close(done)
verifyTrie(syncer.db, sourceAccountTrie.Hash(), t)
}
// TestSyncNoStorageAndOneCodeCorruptPeer has one peer which doesn't deliver
// code requests properly.
func TestSyncNoStorageAndOneCodeCorruptPeer(t *testing.T) {
t.Parallel()
var (
once sync.Once
cancel = make(chan struct{})
term = func() {
once.Do(func() {
close(cancel)
})
}
)