feat: election of ValidatorSet based on VRF

blockchain/v0/reactor.go

@@ -310,7 +310,7 @@ FOR_LOOP:
 			// NOTE: we can probably make this more efficient, but note that calling
 			// first.Hash() doesn't verify the tx contents, so MakePartSet() is
 			// currently necessary.
-			err := state.Validators.VerifyCommit(
+			err := state.Voters.VerifyCommit(
 				chainID, firstID, first.Height, second.LastCommit)
 			if err != nil {
 				bcR.Logger.Error("Error in validation", "err", err)

blockchain/v0/reactor_test.go

@@ -351,7 +351,7 @@ func makeBlock(privVal types.PrivValidator, height int64, state sm.State, lastCo
 	message := state.MakeHashMessage(0)
 	proof, _ := privVal.GenerateVRFProof(message)
 	block, _ := state.MakeBlock(height, makeTxs(height), lastCommit, nil,
-		types.SelectProposer(state.Validators, state.LastProofHash, height, 0).Address, 0, proof)
+		state.Validators.SelectProposer(state.LastProofHash, height, 0).Address, 0, proof)
 	return block
 }
 

blockchain/v1/reactor.go

@@ -420,7 +420,7 @@ func (bcR *BlockchainReactor) processBlock() error {
 	// NOTE: we can probably make this more efficient, but note that calling
 	// first.Hash() doesn't verify the tx contents, so MakePartSet() is
 	// currently necessary.
-	err = bcR.state.Validators.VerifyCommit(chainID, firstID, first.Height, second.LastCommit)
+	err = bcR.state.Voters.VerifyCommit(chainID, firstID, first.Height, second.LastCommit)
 	if err != nil {
 		bcR.Logger.Error("error during commit verification", "err", err,
 			"first", first.Height, "second", second.Height)

blockchain/v1/reactor_test.go

@@ -423,7 +423,7 @@ func makeBlock(privVal types.PrivValidator, height int64, state sm.State, lastCo
 	message := state.MakeHashMessage(0)
 	proof, _ := privVal.GenerateVRFProof(message)
 	block, _ := state.MakeBlock(height, makeTxs(height), lastCommit, nil,
-		types.SelectProposer(state.Validators, state.LastProofHash, height, 0).Address, 0, proof)
+		state.Validators.SelectProposer(state.LastProofHash, height, 0).Address, 0, proof)
 	return block
 }
 

blockchain/v2/processor_context.go

@@ -39,7 +39,7 @@ func (pc pContext) tmState() state.State {
 }
 
 func (pc pContext) verifyCommit(chainID string, blockID types.BlockID, height int64, commit *types.Commit) error {
-	return pc.state.Validators.VerifyCommit(chainID, blockID, height, commit)
+	return pc.state.Voters.VerifyCommit(chainID, blockID, height, commit)
 }
 
 func (pc *pContext) saveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit) {

blockchain/v2/reactor_test.go

@@ -428,7 +428,7 @@ func makeTxs(height int64) (txs []types.Tx) {
 func makeBlock(privVal types.PrivValidator, height int64, state sm.State, lastCommit *types.Commit) *types.Block {
 	message := state.MakeHashMessage(0)
 	proof, _ := privVal.GenerateVRFProof(message)
-	proposerAddr := types.SelectProposer(state.Validators, state.LastProofHash, height, 0).Address
+	proposerAddr := state.Validators.SelectProposer(state.LastProofHash, height, 0).Address
 	block, _ := state.MakeBlock(height, makeTxs(height), lastCommit, nil, proposerAddr, 0, proof)
 	return block
 }

consensus/byzantine_test.go

@@ -178,8 +178,8 @@ func TestByzantine(t *testing.T) {
 
 // find proposer of current height and round from State
 func findProposer(state *State) (int, *types.Validator) {
-	proposer := types.SelectProposer(state.Validators, state.state.LastProofHash, state.Height, state.Round)
-	return state.Validators.GetByAddress(proposer.PubKey.Address())
+	proposer := state.Validators.SelectProposer(state.state.LastProofHash, state.Height, state.Round)
+	return state.Voters.GetByAddress(proposer.PubKey.Address())
 }
 
 //-------------------------------

consensus/common_test.go

@@ -422,7 +422,7 @@ func forceProposer(cs *State, vals []*validatorStub, index []int, height []int64
 				curVal = vals[theOthers(index[j])]
 				mustBe = false
 			}
-			if curVal.GetPubKey().Equals(types.SelectProposer(cs.Validators, currentHash, height[j], round[j]).PubKey) !=
+			if curVal.GetPubKey().Equals(cs.Validators.SelectProposer(currentHash, height[j], round[j]).PubKey) !=
 				mustBe {
 				allMatch = false
 				break

consensus/metrics.go

@@ -19,28 +19,29 @@ type Metrics struct {
 	// Height of the chain.
 	Height metrics.Gauge
 
-	// ValidatorLastSignedHeight of a validator.
-	ValidatorLastSignedHeight metrics.Gauge
+	// VoterLastSignedHeight of a voter.
+	VoterLastSignedHeight metrics.Gauge
 
 	// Number of rounds.
 	Rounds metrics.Gauge
 
-	// Number of validators.
-	Validators metrics.Gauge
-	// Total power of all validators.
-	ValidatorsPower metrics.Gauge
-	// Power of a validator.
-	ValidatorPower metrics.Gauge
-	// Amount of blocks missed by a validator.
-	ValidatorMissedBlocks metrics.Gauge
-	// Number of validators who did not sign.
-	MissingValidators metrics.Gauge
-	// Total power of the missing validators.
-	MissingValidatorsPower metrics.Gauge
-	// Number of validators who tried to double sign.
-	ByzantineValidators metrics.Gauge
-	// Total power of the byzantine validators.
-	ByzantineValidatorsPower metrics.Gauge
+	// ValidatorOrVoter: voter
+	// Number of voters.
+	Voters metrics.Gauge
+	// Total power of all voters.
+	VotersPower metrics.Gauge
+	// Power of a voter.
+	VoterPower metrics.Gauge
+	// Amount of blocks missed by a voter.
+	VoterMissedBlocks metrics.Gauge
+	// Number of voters who did not sign.
+	MissingVoters metrics.Gauge
+	// Total power of the missing voters.
+	MissingVotersPower metrics.Gauge
+	// Number of voters who tried to double sign.
+	ByzantineVoters metrics.Gauge
+	// Total power of the byzantine voters.
+	ByzantineVotersPower metrics.Gauge
 
 	// Time between this and the last block.
 	BlockIntervalSeconds metrics.Gauge
@@ -82,59 +83,59 @@ func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
 			Help:      "Number of rounds.",
 		}, labels).With(labelsAndValues...),
 
-		Validators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		Voters: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "validators",
-			Help:      "Number of validators.",
+			Name:      "voters",
+			Help:      "Number of voters.",
 		}, labels).With(labelsAndValues...),
-		ValidatorLastSignedHeight: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		VoterLastSignedHeight: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "validator_last_signed_height",
-			Help:      "Last signed height for a validator",
+			Name:      "voter_last_signed_height",
+			Help:      "Last signed height for a voter",
 		}, append(labels, "validator_address")).With(labelsAndValues...),
-		ValidatorMissedBlocks: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		VoterMissedBlocks: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "validator_missed_blocks",
-			Help:      "Total missed blocks for a validator",
+			Name:      "voter_missed_blocks",
+			Help:      "Total missed blocks for a voter",
 		}, append(labels, "validator_address")).With(labelsAndValues...),
-		ValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		VotersPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "validators_power",
-			Help:      "Total power of all validators.",
+			Name:      "voters_power",
+			Help:      "Total power of all voters.",
 		}, labels).With(labelsAndValues...),
-		ValidatorPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		VoterPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "validator_power",
-			Help:      "Power of a validator",
+			Name:      "voter_power",
+			Help:      "Power of a voter",
 		}, append(labels, "validator_address")).With(labelsAndValues...),
-		MissingValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		MissingVoters: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "missing_validators",
-			Help:      "Number of validators who did not sign.",
+			Name:      "missing_voters",
+			Help:      "Number of voters who did not sign.",
 		}, labels).With(labelsAndValues...),
-		MissingValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		MissingVotersPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "missing_validators_power",
-			Help:      "Total power of the missing validators.",
+			Name:      "missing_voters_power",
+			Help:      "Total power of the missing voters.",
 		}, labels).With(labelsAndValues...),
-		ByzantineValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		ByzantineVoters: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "byzantine_validators",
-			Help:      "Number of validators who tried to double sign.",
+			Name:      "byzantine_voters",
+			Help:      "Number of voters who tried to double sign.",
 		}, labels).With(labelsAndValues...),
-		ByzantineValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+		ByzantineVotersPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
-			Name:      "byzantine_validators_power",
-			Help:      "Total power of the byzantine validators.",
+			Name:      "byzantine_voters_power",
+			Help:      "Total power of the byzantine voters.",
 		}, labels).With(labelsAndValues...),
 
 		BlockIntervalSeconds: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
@@ -188,18 +189,18 @@ func NopMetrics() *Metrics {
 	return &Metrics{
 		Height: discard.NewGauge(),
 
-		ValidatorLastSignedHeight: discard.NewGauge(),
+		VoterLastSignedHeight: discard.NewGauge(),
 
 		Rounds: discard.NewGauge(),
 
-		Validators:               discard.NewGauge(),
-		ValidatorsPower:          discard.NewGauge(),
-		ValidatorPower:           discard.NewGauge(),
-		ValidatorMissedBlocks:    discard.NewGauge(),
-		MissingValidators:        discard.NewGauge(),
-		MissingValidatorsPower:   discard.NewGauge(),
-		ByzantineValidators:      discard.NewGauge(),
-		ByzantineValidatorsPower: discard.NewGauge(),
+		Voters:               discard.NewGauge(),
+		VotersPower:          discard.NewGauge(),
+		VoterPower:           discard.NewGauge(),
+		VoterMissedBlocks:    discard.NewGauge(),
+		MissingVoters:        discard.NewGauge(),
+		MissingVotersPower:   discard.NewGauge(),
+		ByzantineVoters:      discard.NewGauge(),
+		ByzantineVotersPower: discard.NewGauge(),
 
 		BlockIntervalSeconds: discard.NewGauge(),
 

consensus/reactor.go

@@ -310,7 +310,7 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		case *VoteMessage:
 			cs := conR.conS
 			cs.mtx.RLock()
-			height, valSize, lastCommitSize := cs.Height, cs.Validators.Size(), cs.LastCommit.Size()
+			height, valSize, lastCommitSize := cs.Height, cs.Voters.Size(), cs.LastCommit.Size()
 			cs.mtx.RUnlock()
 			ps.EnsureVoteBitArrays(height, valSize)
 			ps.EnsureVoteBitArrays(height-1, lastCommitSize)
@@ -1119,7 +1119,7 @@ func (ps *PeerState) getVoteBitArray(height int64, round int, votesType types.Si
 }
 
 // 'round': A round for which we have a +2/3 commit.
-func (ps *PeerState) ensureCatchupCommitRound(height int64, round int, numValidators int) {
+func (ps *PeerState) ensureCatchupCommitRound(height int64, round int, numVoters int) {
 	if ps.PRS.Height != height {
 		return
 	}
@@ -1143,37 +1143,37 @@ func (ps *PeerState) ensureCatchupCommitRound(height int64, round int, numValida
 	if round == ps.PRS.Round {
 		ps.PRS.CatchupCommit = ps.PRS.Precommits
 	} else {
-		ps.PRS.CatchupCommit = bits.NewBitArray(numValidators)
+		ps.PRS.CatchupCommit = bits.NewBitArray(numVoters)
 	}
 }
 
 // EnsureVoteBitArrays ensures the bit-arrays have been allocated for tracking
 // what votes this peer has received.
-// NOTE: It's important to make sure that numValidators actually matches
-// what the node sees as the number of validators for height.
-func (ps *PeerState) EnsureVoteBitArrays(height int64, numValidators int) {
+// NOTE: It's important to make sure that numVoters actually matches
+// what the node sees as the number of voters for height.
+func (ps *PeerState) EnsureVoteBitArrays(height int64, numVoters int) {
 	ps.mtx.Lock()
 	defer ps.mtx.Unlock()
-	ps.ensureVoteBitArrays(height, numValidators)
+	ps.ensureVoteBitArrays(height, numVoters)
 }
 
-func (ps *PeerState) ensureVoteBitArrays(height int64, numValidators int) {
+func (ps *PeerState) ensureVoteBitArrays(height int64, numVoters int) {
 	if ps.PRS.Height == height {
 		if ps.PRS.Prevotes == nil {
-			ps.PRS.Prevotes = bits.NewBitArray(numValidators)
+			ps.PRS.Prevotes = bits.NewBitArray(numVoters)
 		}
 		if ps.PRS.Precommits == nil {
-			ps.PRS.Precommits = bits.NewBitArray(numValidators)
+			ps.PRS.Precommits = bits.NewBitArray(numVoters)
 		}
 		if ps.PRS.CatchupCommit == nil {
-			ps.PRS.CatchupCommit = bits.NewBitArray(numValidators)
+			ps.PRS.CatchupCommit = bits.NewBitArray(numVoters)
 		}
 		if ps.PRS.ProposalPOL == nil {
-			ps.PRS.ProposalPOL = bits.NewBitArray(numValidators)
+			ps.PRS.ProposalPOL = bits.NewBitArray(numVoters)
 		}
 	} else if ps.PRS.Height == height+1 {
 		if ps.PRS.LastCommit == nil {
-			ps.PRS.LastCommit = bits.NewBitArray(numValidators)
+			ps.PRS.LastCommit = bits.NewBitArray(numVoters)
 		}
 	}
 }