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consensus: added partial message decoding

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closes #849
This commit is contained in:
Anna Shaleva 2020-04-15 18:56:45 +03:00
parent 1e3c36433f
commit 9dd5ab5e2b
7 changed files with 63 additions and 17 deletions
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1
pkg/consensus/cache_test.go
View file

@ -52,6 +52,7 @@ func getDifferentPayloads(t *testing.T, n int) (payloads []Payload) {
var sign [signatureSize]byte
random.Fill(sign[:])
payloads[i].message = &message{}
payloads[i].SetValidatorIndex(uint16(i))
payloads[i].SetType(payload.MessageType(commitType))
payloads[i].payload = &commit{

12
pkg/consensus/consensus.go
View file

@ -140,7 +140,7 @@ func NewService(cfg Config) (Service, error) {
dbft.WithGetValidators(srv.getValidators),
dbft.WithGetConsensusAddress(srv.getConsensusAddress),
dbft.WithNewConsensusPayload(func() payload.ConsensusPayload { return new(Payload) }),
dbft.WithNewConsensusPayload(func() payload.ConsensusPayload { p := new(Payload); p.message = &message{}; return p }),
dbft.WithNewPrepareRequest(func() payload.PrepareRequest { return new(prepareRequest) }),
dbft.WithNewPrepareResponse(func() payload.PrepareResponse { return new(prepareResponse) }),
dbft.WithNewChangeView(func() payload.ChangeView { return new(changeView) }),
@ -245,7 +245,7 @@ func (s *service) getKeyPair(pubs []crypto.PublicKey) (int, crypto.PrivateKey, c
// OnPayload handles Payload receive.
func (s *service) OnPayload(cp *Payload) {
log := s.log.With(zap.Stringer("hash", cp.Hash()), zap.Stringer("type", cp.Type()))
log := s.log.With(zap.Stringer("hash", cp.Hash()))
if !s.validatePayload(cp) {
log.Debug("can't validate payload")
return
@ -262,6 +262,14 @@ func (s *service) OnPayload(cp *Payload) {
return
}
// decode payload data into message
if cp.message == nil {
if err := cp.decodeData(); err != nil {
log.Debug("can't decode payload data")
return
}
}
// we use switch here because other payloads could be possibly added in future
switch cp.Type() {
case payload.PrepareRequestType:

3
pkg/consensus/consensus_test.go
View file

@ -41,6 +41,7 @@ func TestService_GetVerified(t *testing.T) {
hashes := []util.Uint256{txs[0].Hash(), txs[1].Hash(), txs[2].Hash()}
p := new(Payload)
p.message = &message{}
p.SetType(payload.PrepareRequestType)
p.SetPayload(&prepareRequest{transactionHashes: hashes, minerTx: *transaction.NewMinerTXWithNonce(999)})
p.SetValidatorIndex(1)
@ -76,6 +77,7 @@ func TestService_ValidatePayload(t *testing.T) {
srv := newTestService(t)
priv, _ := getTestValidator(1)
p := new(Payload)
p.message = &message{}
p.SetPayload(&prepareRequest{})
@ -138,6 +140,7 @@ func TestService_OnPayload(t *testing.T) {
priv, _ := getTestValidator(1)
p := new(Payload)
p.message = &message{}
p.SetValidatorIndex(1)
p.SetPayload(&prepareRequest{})

30
pkg/consensus/payload.go
View file

@ -27,8 +27,9 @@ type (
// Payload is a type for consensus-related messages.
Payload struct {
message
*message
data []byte
version uint32
validatorIndex uint16
prevHash util.Uint256
@ -168,9 +169,12 @@ func (p *Payload) EncodeBinaryUnsigned(w *io.BinWriter) {
w.WriteU16LE(p.validatorIndex)
w.WriteU32LE(p.timestamp)
ww := io.NewBufBinWriter()
p.message.EncodeBinary(ww.BinWriter)
w.WriteVarBytes(ww.Bytes())
if p.message != nil {
ww := io.NewBufBinWriter()
p.message.EncodeBinary(ww.BinWriter)
p.data = ww.Bytes()
}
w.WriteVarBytes(p.data)
}
// EncodeBinary implements io.Serializable interface.
@ -227,14 +231,10 @@ func (p *Payload) DecodeBinaryUnsigned(r *io.BinReader) {
p.validatorIndex = r.ReadU16LE()
p.timestamp = r.ReadU32LE()
data := r.ReadVarBytes()
p.data = r.ReadVarBytes()
if r.Err != nil {
return
}
rr := io.NewBinReaderFromBuf(data)
p.message.DecodeBinary(rr)
r.Err = rr.Err
}
// Hash implements payload.ConsensusPayload interface.
@ -318,3 +318,15 @@ func (t messageType) String() string {
return fmt.Sprintf("UNKNOWN(0x%02x)", byte(t))
}
}
// decode data of payload into it's message
func (p *Payload) decodeData() error {
m := new(message)
br := io.NewBinReaderFromBuf(p.data)
m.DecodeBinary(br)
if br.Err != nil {
return errors.Wrap(br.Err, "cannot decode data into message")
}
p.message = m
return nil
}

26
pkg/consensus/payload_test.go
View file

@ -28,6 +28,7 @@ var messageTypes = []messageType{
func TestConsensusPayload_Setters(t *testing.T) {
var p Payload
p.message = &message{}
p.SetVersion(1)
assert.EqualValues(t, 1, p.Version())
@ -86,11 +87,20 @@ func TestConsensusPayload_Hash(t *testing.T) {
func TestConsensusPayload_Serializable(t *testing.T) {
for _, mt := range messageTypes {
p := randomPayload(t, mt)
testserdes.EncodeDecodeBinary(t, p, new(Payload))
actual := new(Payload)
data, err := testserdes.EncodeBinary(p)
require.NoError(t, err)
require.NoError(t, testserdes.DecodeBinary(data, actual))
// message is nil after decoding as we didn't yet call decodeData
require.Nil(t, actual.message)
// message should now be decoded from actual.data byte array
assert.NoError(t, actual.decodeData())
require.Equal(t, p, actual)
data := p.MarshalUnsigned()
data = p.MarshalUnsigned()
pu := new(Payload)
require.NoError(t, pu.UnmarshalUnsigned(data))
assert.NoError(t, pu.decodeData())
p.Witness = transaction.Witness{}
require.Equal(t, p, pu)
@ -115,7 +125,7 @@ func TestConsensusPayload_DecodeBinaryInvalid(t *testing.T) {
buf := make([]byte, 46+1+34+1+2)
expected := &Payload{
message: message{
message: &message{
Type: prepareResponseType,
payload: &prepareResponse{},
},
@ -124,6 +134,8 @@ func TestConsensusPayload_DecodeBinaryInvalid(t *testing.T) {
VerificationScript: []byte{},
},
}
// fill `data` for next check
_ = expected.Hash()
// valid payload
buf[delimeterIndex] = 1
@ -131,11 +143,15 @@ func TestConsensusPayload_DecodeBinaryInvalid(t *testing.T) {
buf[typeIndex] = byte(prepareResponseType)
p := new(Payload)
require.NoError(t, testserdes.DecodeBinary(buf, p))
// decode `data` into `message`
assert.NoError(t, p.decodeData())
require.Equal(t, expected, p)
// invalid type
buf[typeIndex] = 0xFF
require.Error(t, testserdes.DecodeBinary(buf, new(Payload)))
actual := new(Payload)
require.NoError(t, testserdes.DecodeBinary(buf, actual))
require.Error(t, actual.decodeData())
// invalid format
buf[delimeterIndex] = 0
@ -176,7 +192,7 @@ func TestRecoveryMessage_Serializable(t *testing.T) {
func randomPayload(t *testing.T, mt messageType) *Payload {
p := &Payload{
message: message{
message: &message{
Type: mt,
ViewNumber: byte(rand.Uint32()),
payload: randomMessage(t, mt),

2
pkg/consensus/recovery_message.go
View file

@ -285,7 +285,7 @@ func getVerificationScript(i uint16, validators []crypto.PublicKey) []byte {
func fromPayload(t messageType, recovery *Payload, p io.Serializable) *Payload {
return &Payload{
message: message{
message: &message{
Type: t,
ViewNumber: recovery.message.ViewNumber,
payload: p,

6
pkg/consensus/recovery_message_test.go
View file

@ -25,6 +25,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
r := &recoveryMessage{}
p := new(Payload)
p.message = &message{}
p.SetType(payload.RecoveryMessageType)
p.SetPayload(r)
// sign payload to have verification script
@ -38,6 +39,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
nextConsensus: util.Uint160{1, 2},
}
p1 := new(Payload)
p1.message = &message{}
p1.SetType(payload.PrepareRequestType)
p1.SetPayload(req)
p1.SetValidatorIndex(0)
@ -45,6 +47,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
t.Run("prepare response is added", func(t *testing.T) {
p2 := new(Payload)
p2.message = &message{}
p2.SetType(payload.PrepareResponseType)
p2.SetPayload(&prepareResponse{
preparationHash: p1.Hash(),
@ -70,6 +73,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
r.AddPayload(p1)
pr = r.GetPrepareRequest(p, pubs, p1.ValidatorIndex())
require.NotNil(t, pr)
require.Equal(t, p1.Hash(), pr.Hash())
require.Equal(t, p1, pr)
pl := pr.(*Payload)
@ -78,6 +82,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
t.Run("change view is added", func(t *testing.T) {
p3 := new(Payload)
p3.message = &message{}
p3.SetType(payload.ChangeViewType)
p3.SetPayload(&changeView{
newViewNumber: 1,
@ -98,6 +103,7 @@ func TestRecoveryMessage_Setters(t *testing.T) {
t.Run("commit is added", func(t *testing.T) {
p4 := new(Payload)
p4.message = &message{}
p4.SetType(payload.CommitType)
p4.SetPayload(randomMessage(t, commitType))
p4.SetValidatorIndex(4)