neoneo-go/pkg/consensus/consensus_test.go

609 lines
18 KiB
Go

package consensus
import (
"errors"
"testing"
"time"
"github.com/nspcc-dev/dbft/block"
"github.com/nspcc-dev/dbft/payload"
"github.com/nspcc-dev/dbft/timer"
"github.com/nspcc-dev/neo-go/internal/random"
"github.com/nspcc-dev/neo-go/internal/testchain"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core"
coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/fee"
"github.com/nspcc-dev/neo-go/pkg/core/native"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/io"
npayload "github.com/nspcc-dev/neo-go/pkg/network/payload"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/stretchr/testify/require"
"go.uber.org/zap/zaptest"
)
func TestNewService(t *testing.T) {
srv := newTestService(t)
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 100000)
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
require.NoError(t, srv.Chain.PoolTx(tx))
var txx []block.Transaction
require.NotPanics(t, func() { txx = srv.getVerifiedTx() })
require.Len(t, txx, 1)
require.Equal(t, tx, txx[0])
}
func TestNewWatchingService(t *testing.T) {
bc := newTestChain(t, false)
srv, err := NewService(Config{
Logger: zaptest.NewLogger(t),
Broadcast: func(*npayload.Extensible) {},
Chain: bc,
BlockQueue: testBlockQueuer{bc: bc},
ProtocolConfiguration: bc.GetConfig().ProtocolConfiguration,
RequestTx: func(...util.Uint256) {},
StopTxFlow: func() {},
TimePerBlock: bc.GetConfig().TimePerBlock,
// No wallet provided.
})
require.NoError(t, err)
require.NotPanics(t, srv.Start)
require.NotPanics(t, srv.Shutdown)
}
func collectBlock(t *testing.T, bc *core.Blockchain, srv *service) {
h := bc.BlockHeight()
srv.dbft.OnTimeout(timer.HV{Height: srv.dbft.Context.BlockIndex}) // Collect and add block to the chain.
header, err := bc.GetHeader(bc.GetHeaderHash(h + 1))
require.NoError(t, err)
srv.dbft.InitializeConsensus(0, header.Timestamp*nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
}
func initServiceNextConsensus(t *testing.T, newAcc *wallet.Account, offset uint32) (*service, *wallet.Account) {
acc, err := wallet.NewAccountFromWIF(testchain.WIF(testchain.IDToOrder(0)))
require.NoError(t, err)
priv := acc.PrivateKey()
require.NoError(t, acc.ConvertMultisig(1, keys.PublicKeys{priv.PublicKey()}))
bc := newSingleTestChain(t)
newPriv := newAcc.PrivateKey()
// Transfer funds to new validator.
b := smartcontract.NewBuilder()
b.InvokeWithAssert(bc.GoverningTokenHash(), "transfer",
acc.Contract.ScriptHash().BytesBE(), newPriv.GetScriptHash().BytesBE(), int64(native.NEOTotalSupply), nil)
b.InvokeWithAssert(bc.UtilityTokenHash(), "transfer",
acc.Contract.ScriptHash().BytesBE(), newPriv.GetScriptHash().BytesBE(), int64(10000_000_000_000), nil)
script, err := b.Script()
require.NoError(t, err)
tx := transaction.New(script, 21_000_000)
tx.ValidUntilBlock = bc.BlockHeight() + 1
tx.NetworkFee = 10_000_000
tx.Signers = []transaction.Signer{{Scopes: transaction.Global, Account: acc.Contract.ScriptHash()}}
require.NoError(t, acc.SignTx(netmode.UnitTestNet, tx))
require.NoError(t, bc.PoolTx(tx))
srv := newTestServiceWithChain(t, bc)
h := bc.BlockHeight()
srv.dbft.Start(0)
header, err := bc.GetHeader(bc.GetHeaderHash(h + 1))
require.NoError(t, err)
srv.dbft.InitializeConsensus(0, header.Timestamp*nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
// Register new candidate.
b.Reset()
b.InvokeWithAssert(bc.GoverningTokenHash(), "registerCandidate", newPriv.PublicKey().Bytes())
script, err = b.Script()
require.NoError(t, err)
tx = transaction.New(script, 1001_00000000)
tx.ValidUntilBlock = bc.BlockHeight() + 1
tx.NetworkFee = 20_000_000
tx.Signers = []transaction.Signer{{Scopes: transaction.Global, Account: newPriv.GetScriptHash()}}
require.NoError(t, newAcc.SignTx(netmode.UnitTestNet, tx))
require.NoError(t, bc.PoolTx(tx))
collectBlock(t, bc, srv)
cfg := bc.GetConfig()
for i := srv.dbft.BlockIndex; !cfg.ShouldUpdateCommitteeAt(i + offset); i++ {
collectBlock(t, bc, srv)
}
// Vote for new candidate.
b.Reset()
b.InvokeWithAssert(bc.GoverningTokenHash(), "vote",
newPriv.GetScriptHash(), newPriv.PublicKey().Bytes())
script, err = b.Script()
require.NoError(t, err)
tx = transaction.New(script, 20_000_000)
tx.ValidUntilBlock = bc.BlockHeight() + 1
tx.NetworkFee = 20_000_000
tx.Signers = []transaction.Signer{{Scopes: transaction.Global, Account: newPriv.GetScriptHash()}}
require.NoError(t, newAcc.SignTx(netmode.UnitTestNet, tx))
require.NoError(t, bc.PoolTx(tx))
collectBlock(t, bc, srv)
return srv, acc
}
func TestService_NextConsensus(t *testing.T) {
newAcc, err := wallet.NewAccount()
require.NoError(t, err)
script, err := smartcontract.CreateMajorityMultiSigRedeemScript(keys.PublicKeys{newAcc.PublicKey()})
require.NoError(t, err)
checkNextConsensus := func(t *testing.T, bc *core.Blockchain, height uint32, h util.Uint160) {
hdrHash := bc.GetHeaderHash(height)
hdr, err := bc.GetHeader(hdrHash)
require.NoError(t, err)
require.Equal(t, h, hdr.NextConsensus)
}
t.Run("vote 1 block before update", func(t *testing.T) { // voting occurs every block in SingleTestChain
srv, acc := initServiceNextConsensus(t, newAcc, 1)
bc := srv.Chain.(*core.Blockchain)
height := bc.BlockHeight()
checkNextConsensus(t, bc, height, acc.Contract.ScriptHash())
// Reset <- we are here, update NextConsensus
// OnPersist <- update committee
// Block <-
collectBlock(t, bc, srv)
checkNextConsensus(t, bc, height+1, hash.Hash160(script))
})
/*
t.Run("vote 2 blocks before update", func(t *testing.T) {
srv, acc := initServiceNextConsensus(t, newAcc, 2)
bc := srv.Chain.(*core.Blockchain)
defer bc.Close()
height := bc.BlockHeight()
checkNextConsensus(t, bc, height, acc.Contract.ScriptHash())
// Reset <- we are here
// OnPersist <- nothing to do
// Block <-
//
// Reset <- update next consensus
// OnPersist <- update committee
// Block <-
srv.dbft.OnTimeout(timer.HV{Height: srv.dbft.BlockIndex})
checkNextConsensus(t, bc, height+1, acc.Contract.ScriptHash())
srv.dbft.OnTimeout(timer.HV{Height: srv.dbft.BlockIndex})
checkNextConsensus(t, bc, height+2, hash.Hash160(script))
})
*/
}
func TestService_GetVerified(t *testing.T) {
srv := newTestService(t)
srv.dbft.Start(0)
var txs []*transaction.Transaction
for i := 0; i < 4; i++ {
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 100000)
tx.Nonce = 123 + uint32(i)
tx.ValidUntilBlock = 1
txs = append(txs, tx)
}
addSender(t, txs...)
signTx(t, srv.Chain, txs...)
require.NoError(t, srv.Chain.PoolTx(txs[3]))
hashes := []util.Uint256{txs[0].Hash(), txs[1].Hash(), txs[2].Hash()}
// Everyone sends a message.
for i := 0; i < 4; i++ {
p := new(Payload)
// One PrepareRequest and three ChangeViews.
if i == 1 {
p.SetType(payload.PrepareRequestType)
p.SetPayload(&prepareRequest{prevHash: srv.Chain.CurrentBlockHash(), transactionHashes: hashes})
} else {
p.SetType(payload.ChangeViewType)
p.SetPayload(&changeView{newViewNumber: 1, timestamp: uint64(time.Now().UnixNano() / nsInMs)})
}
p.SetHeight(1)
p.SetValidatorIndex(uint16(i))
priv, _ := getTestValidator(i)
require.NoError(t, p.Sign(priv))
// Skip srv.OnPayload, because the service is not really started.
srv.dbft.OnReceive(p)
}
require.Equal(t, uint8(1), srv.dbft.ViewNumber)
require.Equal(t, hashes, srv.lastProposal)
t.Run("new transactions will be proposed in case of failure", func(t *testing.T) {
txx := srv.getVerifiedTx()
require.Equal(t, 1, len(txx), "there is only 1 tx in mempool")
require.Equal(t, txs[3], txx[0])
})
t.Run("more than half of the last proposal will be reused", func(t *testing.T) {
for _, tx := range txs[:2] {
require.NoError(t, srv.Chain.PoolTx(tx))
}
txx := srv.getVerifiedTx()
require.Contains(t, txx, txs[0])
require.Contains(t, txx, txs[1])
require.NotContains(t, txx, txs[2])
})
}
func TestService_ValidatePayload(t *testing.T) {
srv := newTestService(t)
priv, _ := getTestValidator(1)
p := new(Payload)
p.Sender = priv.GetScriptHash()
p.SetPayload(&prepareRequest{})
t.Run("invalid validator index", func(t *testing.T) {
p.SetValidatorIndex(11)
require.NoError(t, p.Sign(priv))
var ok bool
require.NotPanics(t, func() { ok = srv.validatePayload(p) })
require.False(t, ok)
})
t.Run("wrong validator index", func(t *testing.T) {
p.SetValidatorIndex(2)
require.NoError(t, p.Sign(priv))
require.False(t, srv.validatePayload(p))
})
t.Run("invalid sender", func(t *testing.T) {
p.SetValidatorIndex(1)
p.Sender = util.Uint160{}
require.NoError(t, p.Sign(priv))
require.False(t, srv.validatePayload(p))
})
t.Run("normal case", func(t *testing.T) {
p.SetValidatorIndex(1)
p.Sender = priv.GetScriptHash()
require.NoError(t, p.Sign(priv))
require.True(t, srv.validatePayload(p))
})
}
func TestService_getTx(t *testing.T) {
srv := newTestService(t)
t.Run("transaction in mempool", func(t *testing.T) {
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 1234
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
h := tx.Hash()
require.Equal(t, nil, srv.getTx(h))
require.NoError(t, srv.Chain.PoolTx(tx))
got := srv.getTx(h)
require.NotNil(t, got)
require.Equal(t, h, got.Hash())
})
t.Run("transaction in local cache", func(t *testing.T) {
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 4321
tx.ValidUntilBlock = 1
h := tx.Hash()
require.Equal(t, nil, srv.getTx(h))
srv.txx.Add(tx)
got := srv.getTx(h)
require.NotNil(t, got)
require.Equal(t, h, got.Hash())
})
}
func TestService_PrepareRequest(t *testing.T) {
srv := newTestServiceWithState(t, true)
srv.dbft.Start(0)
t.Cleanup(srv.dbft.Timer.Stop)
priv, _ := getTestValidator(1)
p := new(Payload)
p.SetValidatorIndex(1)
prevHash := srv.Chain.CurrentBlockHash()
checkRequest := func(t *testing.T, expectedErr error, req *prepareRequest) {
p.SetPayload(req)
require.NoError(t, p.Sign(priv))
err := srv.verifyRequest(p)
if expectedErr == nil {
require.NoError(t, err)
return
}
require.True(t, errors.Is(err, expectedErr), "got: %v", err)
}
checkRequest(t, errInvalidVersion, &prepareRequest{version: 0xFF, prevHash: prevHash})
checkRequest(t, errInvalidPrevHash, &prepareRequest{prevHash: random.Uint256()})
checkRequest(t, errInvalidStateRoot, &prepareRequest{
stateRootEnabled: true,
prevHash: prevHash,
})
sr, err := srv.Chain.GetStateRoot(srv.dbft.BlockIndex - 1)
require.NoError(t, err)
checkRequest(t, errInvalidTransactionsCount, &prepareRequest{stateRootEnabled: true,
prevHash: prevHash,
stateRoot: sr.Root,
transactionHashes: make([]util.Uint256, srv.ProtocolConfiguration.MaxTransactionsPerBlock+1),
})
checkRequest(t, nil, &prepareRequest{
stateRootEnabled: true,
prevHash: prevHash,
stateRoot: sr.Root,
})
}
func TestService_OnPayload(t *testing.T) {
srv := newTestService(t)
// This test directly reads things from srv.messages that normally
// is read by internal goroutine started with Start(). So let's
// pretend we really did start already.
srv.started.Store(true)
priv, _ := getTestValidator(1)
p := new(Payload)
p.SetValidatorIndex(1)
p.SetPayload(&prepareRequest{})
p.encodeData()
// sender is invalid
require.NoError(t, srv.OnPayload(&p.Extensible))
shouldNotReceive(t, srv.messages)
p = new(Payload)
p.SetValidatorIndex(1)
p.Sender = priv.GetScriptHash()
p.SetPayload(&prepareRequest{})
require.NoError(t, p.Sign(priv))
require.NoError(t, srv.OnPayload(&p.Extensible))
shouldReceive(t, srv.messages)
}
func TestVerifyBlock(t *testing.T) {
srv := newTestService(t)
bc := srv.Chain.(*core.Blockchain)
srv.lastTimestamp = 1
t.Run("good empty", func(t *testing.T) {
b := testchain.NewBlock(t, bc, 1, 0)
require.True(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("good pooled tx", func(t *testing.T) {
tx := transaction.New([]byte{byte(opcode.RET)}, 100000)
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
require.NoError(t, srv.Chain.PoolTx(tx))
b := testchain.NewBlock(t, bc, 1, 0, tx)
require.True(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("good non-pooled tx", func(t *testing.T) {
tx := transaction.New([]byte{byte(opcode.RET)}, 100000)
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
b := testchain.NewBlock(t, bc, 1, 0, tx)
require.True(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("good conflicting tx", func(t *testing.T) {
initGAS := srv.Chain.GetConfig().InitialGASSupply
tx1 := transaction.New([]byte{byte(opcode.RET)}, 100000)
tx1.NetworkFee = int64(initGAS)/2 + 1
tx1.ValidUntilBlock = 1
addSender(t, tx1)
signTx(t, srv.Chain, tx1)
tx2 := transaction.New([]byte{byte(opcode.RET)}, 100000)
tx2.NetworkFee = int64(initGAS)/2 + 1
tx2.ValidUntilBlock = 1
addSender(t, tx2)
signTx(t, srv.Chain, tx2)
require.NoError(t, srv.Chain.PoolTx(tx1))
require.Error(t, srv.Chain.PoolTx(tx2))
b := testchain.NewBlock(t, bc, 1, 0, tx2)
require.True(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("bad old", func(t *testing.T) {
b := testchain.NewBlock(t, bc, 1, 0)
b.Index = srv.Chain.BlockHeight()
require.False(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("bad big size", func(t *testing.T) {
script := make([]byte, int(srv.ProtocolConfiguration.MaxBlockSize))
script[0] = byte(opcode.RET)
tx := transaction.New(script, 100000)
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
b := testchain.NewBlock(t, bc, 1, 0, tx)
require.False(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("bad timestamp", func(t *testing.T) {
b := testchain.NewBlock(t, bc, 1, 0)
b.Timestamp = srv.lastTimestamp - 1
require.False(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("bad tx", func(t *testing.T) {
tx := transaction.New([]byte{byte(opcode.RET)}, 100000)
tx.ValidUntilBlock = 1
addSender(t, tx)
signTx(t, srv.Chain, tx)
tx.Scripts[0].InvocationScript[16] = ^tx.Scripts[0].InvocationScript[16]
b := testchain.NewBlock(t, bc, 1, 0, tx)
require.False(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
t.Run("bad big sys fee", func(t *testing.T) {
txes := make([]*transaction.Transaction, 2)
for i := range txes {
txes[i] = transaction.New([]byte{byte(opcode.RET)}, srv.ProtocolConfiguration.MaxBlockSystemFee/2+1)
txes[i].ValidUntilBlock = 1
addSender(t, txes[i])
signTx(t, srv.Chain, txes[i])
}
b := testchain.NewBlock(t, bc, 1, 0, txes...)
require.False(t, srv.verifyBlock(&neoBlock{Block: *b}))
})
}
func shouldReceive(t *testing.T, ch chan Payload) {
select {
case <-ch:
default:
require.Fail(t, "missing expected message")
}
}
func shouldNotReceive(t *testing.T, ch chan Payload) {
select {
case <-ch:
require.Fail(t, "unexpected message receive")
default:
}
}
func newTestServiceWithState(t *testing.T, stateRootInHeader bool) *service {
return newTestServiceWithChain(t, newTestChain(t, stateRootInHeader))
}
func newTestService(t *testing.T) *service {
return newTestServiceWithState(t, false)
}
func newTestServiceWithChain(t *testing.T, bc *core.Blockchain) *service {
srv, err := NewService(Config{
Logger: zaptest.NewLogger(t),
Broadcast: func(*npayload.Extensible) {},
Chain: bc,
BlockQueue: testBlockQueuer{bc: bc},
ProtocolConfiguration: bc.GetConfig().ProtocolConfiguration,
RequestTx: func(...util.Uint256) {},
StopTxFlow: func() {},
TimePerBlock: bc.GetConfig().TimePerBlock,
Wallet: config.Wallet{
Path: "./testdata/wallet1.json",
Password: "one",
},
})
require.NoError(t, err)
return srv.(*service)
}
type testBlockQueuer struct {
bc *core.Blockchain
}
var _ = BlockQueuer(testBlockQueuer{})
// PutBlock implements BlockQueuer interface.
func (bq testBlockQueuer) PutBlock(b *coreb.Block) error {
return bq.bc.AddBlock(b)
}
func getTestValidator(i int) (*privateKey, *publicKey) {
key := testchain.PrivateKey(i)
return &privateKey{PrivateKey: key}, &publicKey{PublicKey: key.PublicKey()}
}
func newSingleTestChain(t *testing.T) *core.Blockchain {
configPath := "../../config/protocol.unit_testnet.single.yml"
cfg, err := config.LoadFile(configPath)
require.NoError(t, err, "could not load config")
chain, err := core.NewBlockchain(storage.NewMemoryStore(), cfg.Blockchain(), zaptest.NewLogger(t))
require.NoError(t, err, "could not create chain")
go chain.Run()
t.Cleanup(chain.Close)
return chain
}
func newTestChain(t *testing.T, stateRootInHeader bool) *core.Blockchain {
unitTestNetCfg, err := config.Load("../../config", netmode.UnitTestNet)
require.NoError(t, err)
unitTestNetCfg.ProtocolConfiguration.StateRootInHeader = stateRootInHeader
chain, err := core.NewBlockchain(storage.NewMemoryStore(), unitTestNetCfg.Blockchain(), zaptest.NewLogger(t))
require.NoError(t, err)
go chain.Run()
t.Cleanup(chain.Close)
return chain
}
var neoOwner = testchain.MultisigScriptHash()
func addSender(t *testing.T, txs ...*transaction.Transaction) {
for _, tx := range txs {
tx.Signers = []transaction.Signer{
{
Account: neoOwner,
},
}
}
}
func signTx(t *testing.T, bc Ledger, txs ...*transaction.Transaction) {
validators := make([]*keys.PublicKey, 4)
privNetKeys := make([]*keys.PrivateKey, 4)
for i := 0; i < 4; i++ {
privNetKeys[i] = testchain.PrivateKey(i)
validators[i] = privNetKeys[i].PublicKey()
}
privNetKeys = privNetKeys[:3]
rawScript, err := smartcontract.CreateMultiSigRedeemScript(3, validators)
require.NoError(t, err)
for _, tx := range txs {
size := io.GetVarSize(tx)
netFee, sizeDelta := fee.Calculate(bc.GetBaseExecFee(), rawScript)
tx.NetworkFee += +netFee
size += sizeDelta
tx.NetworkFee += int64(size) * bc.FeePerByte()
buf := io.NewBufBinWriter()
for _, key := range privNetKeys {
signature := key.SignHashable(uint32(testchain.Network()), tx)
emit.Bytes(buf.BinWriter, signature)
}
tx.Scripts = []transaction.Witness{{
InvocationScript: buf.Bytes(),
VerificationScript: rawScript,
}}
}
}