dbft: remove useless setters of dBFT interfaces

Ref. #84 (comment).

Signed-off-by: Anna Shaleva <[email protected]>

consensus_message.go

@@ -4,18 +4,10 @@ package dbft
 type ConsensusMessage[H Hash, A Address] interface {
 	// ViewNumber returns view number when this message was originated.
 	ViewNumber() byte
-	// SetViewNumber sets view number.
-	SetViewNumber(view byte)
-
 	// Type returns type of this message.
 	Type() MessageType
-	// SetType sets the type of this message.
-	SetType(t MessageType)
-
 	// Payload returns this message's actual payload.
 	Payload() any
-	// SetPayload sets this message's payload to p.
-	SetPayload(p any)
 
 	// GetChangeView returns payload as if it was ChangeView.
 	GetChangeView() ChangeView

consensus_payload.go

@@ -13,7 +13,6 @@ type ConsensusPayload[H Hash, A Address] interface {
 	SetValidatorIndex(i uint16)
 
 	Height() uint32
-	SetHeight(h uint32)
 
 	// Hash returns 32-byte checksum of the payload.
 	Hash() H

dbft_test.go

@@ -202,8 +202,7 @@ func TestDBFT_OnReceiveRequestSendResponse(t *testing.T) {
 		})
 
 		t.Run("old height", func(t *testing.T) {
-			p := s.getPrepareRequest(5, txs[0].Hash())
-			p.SetHeight(3)
+			p := s.getPrepareRequestWithHeight(5, 3, txs[0].Hash())
 			service.OnReceive(p)
 			require.Nil(t, s.tryRecv())
 		})
@@ -735,60 +734,41 @@ func (s testState) getChangeView(from uint16, view byte) Payload {
 	cv := payload.NewChangeView()
 	cv.SetNewViewNumber(view)
 
-	p := s.getPayload(from)
-	p.SetType(dbft.ChangeViewType)
-	p.SetPayload(cv)
-
+	p := payload.NewConsensusPayload(dbft.ChangeViewType, s.currHeight+1, from, view, cv)
 	return p
 }
 
 func (s testState) getRecoveryRequest(from uint16) Payload {
-	p := s.getPayload(from)
-	p.SetType(dbft.RecoveryRequestType)
-	p.SetPayload(payload.NewRecoveryRequest())
-
+	p := payload.NewConsensusPayload(dbft.RecoveryRequestType, s.currHeight+1, from, 0, payload.NewRecoveryRequest())
 	return p
 }
 
 func (s testState) getCommit(from uint16, sign []byte) Payload {
 	c := payload.NewCommit()
 	c.SetSignature(sign)
 
-	p := s.getPayload(from)
-	p.SetType(dbft.CommitType)
-	p.SetPayload(c)
-
+	p := payload.NewConsensusPayload(dbft.CommitType, s.currHeight+1, from, 0, c)
 	return p
 }
 
 func (s testState) getPrepareResponse(from uint16, phash crypto.Uint256) Payload {
 	resp := payload.NewPrepareResponse()
 	resp.SetPreparationHash(phash)
 
-	p := s.getPayload(from)
-	p.SetType(dbft.PrepareResponseType)
-	p.SetPayload(resp)
-
+	p := payload.NewConsensusPayload(dbft.PrepareResponseType, s.currHeight+1, from, 0, resp)
 	return p
 }
 
 func (s testState) getPrepareRequest(from uint16, hashes ...crypto.Uint256) Payload {
+	return s.getPrepareRequestWithHeight(from, s.currHeight+1, hashes...)
+}
+
+func (s testState) getPrepareRequestWithHeight(from uint16, height uint32, hashes ...crypto.Uint256) Payload {
 	req := payload.NewPrepareRequest()
 	req.SetTransactionHashes(hashes)
 	req.SetNextConsensus(s.nextConsensus())
 
-	p := s.getPayload(from)
-	p.SetType(dbft.PrepareRequestType)
-	p.SetPayload(req)
-
-	return p
-}
-
-func (s testState) getPayload(from uint16) Payload {
-	p := payload.NewConsensusPayload()
-	p.SetHeight(s.currHeight + 1)
-	p.SetValidatorIndex(from)
-
+	p := payload.NewConsensusPayload(dbft.PrepareRequestType, height, from, 0, req)
 	return p
 }
 
@@ -867,7 +847,9 @@ func (s *testState) getOptions() []func(*dbft.Config[crypto.Uint256, crypto.Uint
 		dbft.WithNewChangeView[crypto.Uint256, crypto.Uint160](payload.NewChangeView),
 		dbft.WithNewCommit[crypto.Uint256, crypto.Uint160](payload.NewCommit),
 		dbft.WithNewRecoveryRequest[crypto.Uint256, crypto.Uint160](payload.NewRecoveryRequest),
-		dbft.WithNewRecoveryMessage[crypto.Uint256, crypto.Uint160](payload.NewRecoveryMessage),
+		dbft.WithNewRecoveryMessage[crypto.Uint256, crypto.Uint160](func() dbft.RecoveryMessage[crypto.Uint256, crypto.Uint160] {
+			return payload.NewRecoveryMessage(nil)
+		}),
 	}
 
 	verify := s.verify
@@ -898,13 +880,7 @@ func newBlockFromContext(ctx *dbft.Context[crypto.Uint256, crypto.Uint160]) dbft
 // newConsensusPayload is a function for creating consensus payload of specific
 // type.
 func newConsensusPayload(c *dbft.Context[crypto.Uint256, crypto.Uint160], t dbft.MessageType, msg any) dbft.ConsensusPayload[crypto.Uint256, crypto.Uint160] {
-	cp := payload.NewConsensusPayload()
-	cp.SetHeight(c.BlockIndex)
-	cp.SetValidatorIndex(uint16(c.MyIndex))
-	cp.SetViewNumber(c.ViewNumber)
-	cp.SetType(t)
-	cp.SetPayload(msg)
-
+	cp := payload.NewConsensusPayload(t, c.BlockIndex, uint16(c.MyIndex), c.ViewNumber, msg)
 	return cp
 }
 

internal/payload/consensus_message.go

@@ -98,27 +98,12 @@ func (m message) ViewNumber() byte {
 	return m.viewNumber
 }
 
-// SetViewNumber implements ConsensusMessage interface.
-func (m *message) SetViewNumber(view byte) {
-	m.viewNumber = view
-}
-
 // Type implements ConsensusMessage interface.
 func (m message) Type() dbft.MessageType {
 	return m.cmType
 }
 
-// SetType implements ConsensusMessage interface.
-func (m *message) SetType(t dbft.MessageType) {
-	m.cmType = t
-}
-
 // Payload implements ConsensusMessage interface.
 func (m message) Payload() any {
 	return m.payload
 }
-
-// SetPayload implements ConsensusMessage interface.
-func (m *message) SetPayload(p any) {
-	m.payload = p
-}

internal/payload/constructors.go

@@ -6,8 +6,16 @@ import (
 )
 
 // NewConsensusPayload returns minimal ConsensusPayload implementation.
-func NewConsensusPayload() dbft.ConsensusPayload[crypto.Uint256, crypto.Uint160] {
-	return &Payload{}
+func NewConsensusPayload(t dbft.MessageType, height uint32, validatorIndex uint16, viewNumber byte, consensusMessage any) dbft.ConsensusPayload[crypto.Uint256, crypto.Uint160] {
+	return &Payload{
+		message: message{
+			cmType:     t,
+			viewNumber: viewNumber,
+			payload:    consensusMessage,
+		},
+		validatorIndex: validatorIndex,
+		height:         height,
+	}
 }
 
 // NewPrepareRequest returns minimal prepareRequest implementation.
@@ -36,8 +44,9 @@ func NewRecoveryRequest() dbft.RecoveryRequest {
 }
 
 // NewRecoveryMessage returns minimal RecoveryMessage implementation.
-func NewRecoveryMessage() dbft.RecoveryMessage[crypto.Uint256, crypto.Uint160] {
+func NewRecoveryMessage(preparationHash *crypto.Uint256) dbft.RecoveryMessage[crypto.Uint256, crypto.Uint160] {
 	return &recoveryMessage{
+		preparationHash:     preparationHash,
 		preparationPayloads: make([]preparationCompact, 0),
 		commitPayloads:      make([]commitCompact, 0),
 		changeViewPayloads:  make([]changeViewCompact, 0),

internal/payload/message.go

@@ -100,11 +100,6 @@ func (p Payload) Version() uint32 {
 	return p.version
 }
 
-// SetVersion implements ConsensusPayload interface.
-func (p *Payload) SetVersion(v uint32) {
-	p.version = v
-}
-
 // ValidatorIndex implements ConsensusPayload interface.
 func (p Payload) ValidatorIndex() uint16 {
 	return p.validatorIndex
@@ -120,17 +115,7 @@ func (p Payload) PrevHash() crypto.Uint256 {
 	return p.prevHash
 }
 
-// SetPrevHash implements ConsensusPayload interface.
-func (p *Payload) SetPrevHash(h crypto.Uint256) {
-	p.prevHash = h
-}
-
 // Height implements ConsensusPayload interface.
 func (p Payload) Height() uint32 {
 	return p.height
 }
-
-// SetHeight implements ConsensusPayload interface.
-func (p *Payload) SetHeight(h uint32) {
-	p.height = h
-}

internal/payload/message_test.go

@@ -13,16 +13,12 @@ import (
 )
 
 func TestPayload_EncodeDecode(t *testing.T) {
-	m := NewConsensusPayload().(*Payload)
-	m.SetValidatorIndex(10)
-	m.SetHeight(77)
-	m.SetPrevHash(crypto.Uint256{1})
-	m.SetVersion(8)
-	m.SetViewNumber(3)
+	generateMessage := func(typ dbft.MessageType, payload any) *Payload {
+		return NewConsensusPayload(typ, 77, 10, 3, payload).(*Payload)
+	}
 
 	t.Run("PrepareRequest", func(t *testing.T) {
-		m.SetType(dbft.PrepareRequestType)
-		m.SetPayload(&prepareRequest{
+		m := generateMessage(dbft.PrepareRequestType, &prepareRequest{
 			nonce:     123,
 			timestamp: 345,
 			transactionHashes: []crypto.Uint256{
@@ -36,8 +32,7 @@ func TestPayload_EncodeDecode(t *testing.T) {
 	})
 
 	t.Run("PrepareResponse", func(t *testing.T) {
-		m.SetType(dbft.PrepareResponseType)
-		m.SetPayload(&prepareResponse{
+		m := generateMessage(dbft.PrepareResponseType, &prepareResponse{
 			preparationHash: crypto.Uint256{3},
 		})
 
@@ -46,18 +41,16 @@ func TestPayload_EncodeDecode(t *testing.T) {
 	})
 
 	t.Run("Commit", func(t *testing.T) {
-		m.SetType(dbft.CommitType)
 		var cc commit
 		fillRandom(t, cc.signature[:])
-		m.SetPayload(&cc)
+		m := generateMessage(dbft.CommitType, &cc)
 
 		testEncodeDecode(t, m, new(Payload))
 		testMarshalUnmarshal(t, m, new(Payload))
 	})
 
 	t.Run("ChangeView", func(t *testing.T) {
-		m.SetType(dbft.ChangeViewType)
-		m.SetPayload(&changeView{
+		m := generateMessage(dbft.ChangeViewType, &changeView{
 			timestamp:     12345,
 			newViewNumber: 4,
 		})
@@ -67,8 +60,7 @@ func TestPayload_EncodeDecode(t *testing.T) {
 	})
 
 	t.Run("RecoveryMessage", func(t *testing.T) {
-		m.SetType(dbft.RecoveryMessageType)
-		m.SetPayload(&recoveryMessage{
+		m := generateMessage(dbft.RecoveryMessageType, &recoveryMessage{
 			changeViewPayloads: []changeViewCompact{
 				{
 					Timestamp:          123,
@@ -97,8 +89,7 @@ func TestPayload_EncodeDecode(t *testing.T) {
 	})
 
 	t.Run("RecoveryRequest", func(t *testing.T) {
-		m.SetType(dbft.RecoveryRequestType)
-		m.SetPayload(&recoveryRequest{
+		m := generateMessage(dbft.RecoveryRequestType, &recoveryRequest{
 			timestamp: 17334,
 		})
 
@@ -108,13 +99,7 @@ func TestPayload_EncodeDecode(t *testing.T) {
 }
 
 func TestRecoveryMessage_NoPayloads(t *testing.T) {
-	m := NewConsensusPayload().(*Payload)
-	m.SetValidatorIndex(0)
-	m.SetHeight(77)
-	m.SetPrevHash(crypto.Uint256{1})
-	m.SetVersion(8)
-	m.SetViewNumber(3)
-	m.SetPayload(&recoveryMessage{})
+	m := NewConsensusPayload(dbft.RecoveryRequestType, 77, 0, 3, &recoveryMessage{}).(*Payload)
 
 	validators := make([]dbft.PublicKey, 1)
 	_, validators[0] = crypto.Generate(rand.Reader)
@@ -186,9 +171,8 @@ func TestPayload_Setters(t *testing.T) {
 	})
 
 	t.Run("RecoveryMessage", func(t *testing.T) {
-		r := NewRecoveryMessage()
+		r := NewRecoveryMessage(&crypto.Uint256{1, 2, 3})
 
-		r.SetPreparationHash(&crypto.Uint256{1, 2, 3})
 		require.Equal(t, &crypto.Uint256{1, 2, 3}, r.PreparationHash())
 	})
 }

internal/payload/recovery_message.go

@@ -31,11 +31,6 @@ func (m *recoveryMessage) PreparationHash() *crypto.Uint256 {
 	return m.preparationHash
 }
 
-// SetPreparationHash implements RecoveryMessage interface.
-func (m *recoveryMessage) SetPreparationHash(h *crypto.Uint256) {
-	m.preparationHash = h
-}
-
 // AddPayload implements RecoveryMessage interface.
 func (m *recoveryMessage) AddPayload(p dbft.ConsensusPayload[crypto.Uint256, crypto.Uint160]) {
 	switch p.Type() {

internal/simulation/main.go

@@ -121,14 +121,7 @@ func newBlockFromContext(ctx *dbft.Context[crypto.Uint256, crypto.Uint160]) dbft
 // defaultNewConsensusPayload is default function for creating
 // consensus payload of specific type.
 func defaultNewConsensusPayload(c *dbft.Context[crypto.Uint256, crypto.Uint160], t dbft.MessageType, msg any) dbft.ConsensusPayload[crypto.Uint256, crypto.Uint160] {
-	cp := payload.NewConsensusPayload()
-	cp.SetHeight(c.BlockIndex)
-	cp.SetValidatorIndex(uint16(c.MyIndex))
-	cp.SetViewNumber(c.ViewNumber)
-	cp.SetType(t)
-	cp.SetPayload(msg)
-
-	return cp
+	return payload.NewConsensusPayload(t, c.BlockIndex, uint16(c.MyIndex), c.ViewNumber, msg)
 }
 
 func initSimNode(nodes []*simNode, i int, log *zap.Logger) error {
@@ -164,7 +157,9 @@ func initSimNode(nodes []*simNode, i int, log *zap.Logger) error {
 		dbft.WithNewPrepareResponse[crypto.Uint256, crypto.Uint160](payload.NewPrepareResponse),
 		dbft.WithNewChangeView[crypto.Uint256, crypto.Uint160](payload.NewChangeView),
 		dbft.WithNewCommit[crypto.Uint256, crypto.Uint160](payload.NewCommit),
-		dbft.WithNewRecoveryMessage[crypto.Uint256, crypto.Uint160](payload.NewRecoveryMessage),
+		dbft.WithNewRecoveryMessage[crypto.Uint256, crypto.Uint160](func() dbft.RecoveryMessage[crypto.Uint256, crypto.Uint160] {
+			return payload.NewRecoveryMessage(nil)
+		}),
 		dbft.WithNewRecoveryRequest[crypto.Uint256, crypto.Uint160](payload.NewRecoveryRequest),
 	)
 

recovery_message.go

@@ -16,6 +16,4 @@ type RecoveryMessage[H Hash, A Address] interface {
 	// PreparationHash returns has of PrepareRequest payload for this epoch.
 	// It can be useful in case only PrepareResponse payloads were received.
 	PreparationHash() *H
-	// SetPreparationHash sets preparation hash.
-	SetPreparationHash(h *H)
 }