// Now let's do it all again, but starting from round 2 instead of 0
func TestProposerSelection2(t *testing.T) {
cs1, vss := randConsensusState(4) // test needs more work for more than 3 validators
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
// this time we jump in at round 2
incrementRound(vss[1:]...)
incrementRound(vss[1:]...)
startTestRound(cs1, cs1.Height, 2)
<-newRoundCh // wait for the new round
// everyone just votes nil. we get a new proposer each round
for i := 0; i < len(vss); i++ {
prop := cs1.GetRoundState().Validators.Proposer()
if !bytes.Equal(prop.Address, vss[(i+2)%len(vss)].Address) {
t.Fatalf("expected proposer to be validator %d. Got %X", (i+2)%len(vss), prop.Address)
}
rs := cs1.GetRoundState()
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, rs.ProposalBlockParts.Header(), vss[1:]...)
<-newRoundCh // wait for the new round event each round
incrementRound(vss[1:]...)
}
}
func TestProposerSelection0(t *testing.T) {
cs1, vss := randConsensusState(4)
height, round := cs1.Height, cs1.Round
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
startTestRound(cs1, height, round)
// wait for new round so proposer is set
<-newRoundCh
// lets commit a block and ensure proposer for the next height is correct
prop := cs1.GetRoundState().Validators.Proposer()
if !bytes.Equal(prop.Address, cs1.privValidator.Address) {
t.Fatalf("expected proposer to be validator %d. Got %X", 0, prop.Address)
}
// wait for complete proposal
<-proposalCh
rs := cs1.GetRoundState()
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, rs.ProposalBlock.Hash(), rs.ProposalBlockParts.Header(), vss[1:]...)
// wait for new round so next validator is set
<-newRoundCh
prop = cs1.GetRoundState().Validators.Proposer()
if !bytes.Equal(prop.Address, vss[1].Address) {
t.Fatalf("expected proposer to be validator %d. Got %X", 1, prop.Address)
}
}
// propose, prevote, and precommit a block
func TestFullRound1(t *testing.T) {
cs, vss := randConsensusState(1)
height, round := cs.Height, cs.Round
voteCh := subscribeToEvent(cs.evsw, "tester", types.EventStringVote(), 1)
propCh := subscribeToEvent(cs.evsw, "tester", types.EventStringCompleteProposal(), 1)
newRoundCh := subscribeToEvent(cs.evsw, "tester", types.EventStringNewRound(), 1)
startTestRound(cs, height, round)
<-newRoundCh
// grab proposal
re := <-propCh
propBlockHash := re.(types.EventDataRoundState).RoundState.(*RoundState).ProposalBlock.Hash()
<-voteCh // wait for prevote
validatePrevote(t, cs, round, vss[0], propBlockHash)
<-voteCh // wait for precommit
// we're going to roll right into new height
<-newRoundCh
validateLastPrecommit(t, cs, vss[0], propBlockHash)
}
// Enter: +2/3 precommits for nil at (height,round-1)
// Enter: `timeoutPrecommits` after any +2/3 precommits from (height,round-1)
// Enter: `startTime = commitTime+timeoutCommit` from NewHeight(height)
// NOTE: cs.StartTime was already set for height.
func (cs *ConsensusState) EnterNewRound(height int, round int, timedOut bool) {
cs.mtx.Lock()
defer cs.mtx.Unlock()
if cs.Height != height || round < cs.Round || (cs.Round == round && cs.Step != RoundStepNewHeight) {
log.Debug(Fmt("EnterNewRound(%v/%v): Invalid args. Current step: %v/%v/%v", height, round, cs.Height, cs.Round, cs.Step))
return
}
if timedOut {
cs.evsw.FireEvent(types.EventStringTimeoutWait(), cs.RoundStateEvent())
}
if now := time.Now(); cs.StartTime.After(now) {
log.Warn("Need to set a buffer and log.Warn() here for sanity.", "startTime", cs.StartTime, "now", now)
}
log.Notice(Fmt("EnterNewRound(%v/%v). Current: %v/%v/%v", height, round, cs.Height, cs.Round, cs.Step))
// Increment validators if necessary
validators := cs.Validators
if cs.Round < round {
validators = validators.Copy()
validators.IncrementAccum(round - cs.Round)
}
// Setup new round
cs.Round = round
cs.Step = RoundStepNewRound
cs.Validators = validators
if round == 0 {
// We've already reset these upon new height,
// and meanwhile we might have received a proposal
// for round 0.
} else {
cs.Proposal = nil
cs.ProposalBlock = nil
cs.ProposalBlockParts = nil
}
cs.Votes.SetRound(round + 1) // also track next round (round+1) to allow round-skipping
cs.evsw.FireEvent(types.EventStringNewRound(), cs.RoundStateEvent())
// Immediately go to EnterPropose.
go cs.EnterPropose(height, round)
}
// Enter: +2/3 precommits for nil at (height,round-1)
// Enter: `timeoutPrecommits` after any +2/3 precommits from (height,round-1)
// Enter: `startTime = commitTime+timeoutCommit` from NewHeight(height)
// NOTE: cs.StartTime was already set for height.
func (cs *ConsensusState) enterNewRound(height int, round int) {
if cs.Height != height || round < cs.Round || (cs.Round == round && cs.Step != RoundStepNewHeight) {
log.Debug(Fmt("enterNewRound(%v/%v): Invalid args. Current step: %v/%v/%v", height, round, cs.Height, cs.Round, cs.Step))
return
}
if now := time.Now(); cs.StartTime.After(now) {
log.Warn("Need to set a buffer and log.Warn() here for sanity.", "startTime", cs.StartTime, "now", now)
}
// cs.stopTimer()
log.Notice(Fmt("enterNewRound(%v/%v). Current: %v/%v/%v", height, round, cs.Height, cs.Round, cs.Step))
// Increment validators if necessary
validators := cs.Validators
if cs.Round < round {
validators = validators.Copy()
validators.IncrementAccum(round - cs.Round)
}
// Setup new round
// we don't fire newStep for this step,
// but we fire an event, so update the round step first
cs.updateRoundStep(round, RoundStepNewRound)
cs.Validators = validators
if round == 0 {
// We've already reset these upon new height,
// and meanwhile we might have received a proposal
// for round 0.
} else {
cs.Proposal = nil
cs.ProposalBlock = nil
cs.ProposalBlockParts = nil
}
cs.Votes.SetRound(round + 1) // also track next round (round+1) to allow round-skipping
cs.evsw.FireEvent(types.EventStringNewRound(), cs.RoundStateEvent())
// Immediately go to enterPropose.
cs.enterPropose(height, round)
}
// 4 vals.
// we receive a final precommit after going into next round, but others might have gone to commit already!
func TestHalt1(t *testing.T) {
cs1, vss := randConsensusState(4)
cs2, cs3, cs4 := vss[1], vss[2], vss[3]
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
newBlockCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewBlock(), 1)
voteCh := subscribeToVoter(cs1, cs1.privValidator.Address)
// start round and wait for propose and prevote
startTestRound(cs1, cs1.Height, 0)
<-newRoundCh
re := <-proposalCh
rs := re.(types.EventDataRoundState).RoundState.(*RoundState)
propBlock := rs.ProposalBlock
propBlockParts := propBlock.MakePartSet()
<-voteCh // prevote
signAddVoteToFromMany(types.VoteTypePrevote, cs1, propBlock.Hash(), propBlockParts.Header(), cs3, cs4)
<-voteCh // precommit
// the proposed block should now be locked and our precommit added
validatePrecommit(t, cs1, 0, 0, vss[0], propBlock.Hash(), propBlock.Hash())
// add precommits from the rest
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs2, nil, types.PartSetHeader{}) // didnt receive proposal
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs3, propBlock.Hash(), propBlockParts.Header())
// we receive this later, but cs3 might receive it earlier and with ours will go to commit!
precommit4 := signVote(cs4, types.VoteTypePrecommit, propBlock.Hash(), propBlockParts.Header())
incrementRound(cs2, cs3, cs4)
// timeout to new round
<-timeoutWaitCh
re = <-newRoundCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
log.Notice("### ONTO ROUND 1")
/*Round2
// we timeout and prevote our lock
// a polka happened but we didn't see it!
*/
// go to prevote, prevote for locked block
<-voteCh // prevote
validatePrevote(t, cs1, 0, vss[0], rs.LockedBlock.Hash())
// now we receive the precommit from the previous round
addVoteToFrom(cs1, cs4, precommit4)
// receiving that precommit should take us straight to commit
<-newBlockCh
re = <-newRoundCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
if rs.Height != 2 {
t.Fatal("expected height to increment")
}
}
// What we want:
// dont see P0, lock on P1 at R1, dont unlock using P0 at R2
func TestLockPOLSafety2(t *testing.T) {
cs1, vss := randConsensusState(4)
cs2, cs3, cs4 := vss[1], vss[2], vss[3]
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
timeoutProposeCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutPropose(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
unlockCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringUnlock(), 1)
voteCh := subscribeToVoter(cs1, cs1.privValidator.Address)
// the block for R0: gets polkad but we miss it
// (even though we signed it, shhh)
_, propBlock0 := decideProposal(cs1, vss[0], cs1.Height, cs1.Round)
propBlockHash0 := propBlock0.Hash()
propBlockParts0 := propBlock0.MakePartSet()
// the others sign a polka but we don't see it
prevotes := signVoteMany(types.VoteTypePrevote, propBlockHash0, propBlockParts0.Header(), cs2, cs3, cs4)
// the block for round 1
prop1, propBlock1 := decideProposal(cs1, cs2, cs2.Height, cs2.Round+1)
propBlockHash1 := propBlock1.Hash()
propBlockParts1 := propBlock1.MakePartSet()
incrementRound(cs2, cs3, cs4)
cs1.updateRoundStep(0, RoundStepPrecommitWait)
log.Notice("### ONTO Round 1")
// jump in at round 1
height := cs1.Height
startTestRound(cs1, height, 1)
<-newRoundCh
cs1.SetProposalAndBlock(prop1, propBlock1, propBlockParts1, "some peer")
<-proposalCh
<-voteCh // prevote
signAddVoteToFromMany(types.VoteTypePrevote, cs1, propBlockHash1, propBlockParts1.Header(), cs2, cs3, cs4)
<-voteCh // precommit
// the proposed block should now be locked and our precommit added
validatePrecommit(t, cs1, 1, 1, vss[0], propBlockHash1, propBlockHash1)
// add precommits from the rest
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs4)
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs3, propBlockHash1, propBlockParts1.Header())
incrementRound(cs2, cs3, cs4)
// timeout of precommit wait to new round
<-timeoutWaitCh
// in round 2 we see the polkad block from round 0
newProp := types.NewProposal(height, 2, propBlockParts0.Header(), 0)
if err := cs3.SignProposal(chainID, newProp); err != nil {
t.Fatal(err)
}
cs1.SetProposalAndBlock(newProp, propBlock0, propBlockParts0, "some peer")
addVoteToFromMany(cs1, prevotes, cs2, cs3, cs4) // add the pol votes
<-newRoundCh
log.Notice("### ONTO Round 2")
/*Round2
// now we see the polka from round 1, but we shouldnt unlock
*/
select {
case <-timeoutProposeCh:
<-proposalCh
case <-proposalCh:
}
select {
case <-unlockCh:
t.Fatal("validator unlocked using an old polka")
case <-voteCh:
// prevote our locked block
}
validatePrevote(t, cs1, 2, vss[0], propBlockHash1)
}
// 4 vals
// a polka at round 1 but we miss it
// then a polka at round 2 that we lock on
// then we see the polka from round 1 but shouldn't unlock
func TestLockPOLSafety1(t *testing.T) {
cs1, vss := randConsensusState(4)
cs2, cs3, cs4 := vss[1], vss[2], vss[3]
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
timeoutProposeCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutPropose(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
voteCh := subscribeToVoter(cs1, cs1.privValidator.Address)
// start round and wait for propose and prevote
startTestRound(cs1, cs1.Height, 0)
<-newRoundCh
re := <-proposalCh
rs := re.(types.EventDataRoundState).RoundState.(*RoundState)
propBlock := rs.ProposalBlock
<-voteCh // prevote
validatePrevote(t, cs1, 0, vss[0], propBlock.Hash())
// the others sign a polka but we don't see it
prevotes := signVoteMany(types.VoteTypePrevote, propBlock.Hash(), propBlock.MakePartSet().Header(), cs2, cs3, cs4)
// before we time out into new round, set next proposer
// and next proposal block
/*
_, v1 := cs1.Validators.GetByAddress(vss[0].Address)
v1.VotingPower = 1
if updated := cs1.Validators.Update(v1); !updated {
t.Fatal("failed to update validator")
}*/
log.Warn("old prop", "hash", fmt.Sprintf("%X", propBlock.Hash()))
// we do see them precommit nil
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs3, cs4)
prop, propBlock := decideProposal(cs1, cs2, cs2.Height, cs2.Round+1)
propBlockHash := propBlock.Hash()
propBlockParts := propBlock.MakePartSet()
incrementRound(cs2, cs3, cs4)
//XXX: this isnt gauranteed to get there before the timeoutPropose ...
cs1.SetProposalAndBlock(prop, propBlock, propBlockParts, "some peer")
<-newRoundCh
log.Notice("### ONTO ROUND 1")
/*Round2
// we timeout and prevote our lock
// a polka happened but we didn't see it!
*/
// now we're on a new round and not the proposer,
// but we should receive the proposal
select {
case re = <-proposalCh:
case <-timeoutProposeCh:
re = <-proposalCh
}
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
if rs.LockedBlock != nil {
t.Fatal("we should not be locked!")
}
log.Warn("new prop", "hash", fmt.Sprintf("%X", propBlockHash))
// go to prevote, prevote for proposal block
<-voteCh
validatePrevote(t, cs1, 1, vss[0], propBlockHash)
// now we see the others prevote for it, so we should lock on it
signAddVoteToFromMany(types.VoteTypePrevote, cs1, propBlockHash, propBlockParts.Header(), cs2, cs3, cs4)
<-voteCh // precommit
// we should have precommitted
validatePrecommit(t, cs1, 1, 1, vss[0], propBlockHash, propBlockHash)
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs3)
<-timeoutWaitCh
incrementRound(cs2, cs3, cs4)
<-newRoundCh
log.Notice("### ONTO ROUND 2")
/*Round3
we see the polka from round 1 but we shouldn't unlock!
*/
// timeout of propose
<-timeoutProposeCh
// finish prevote
<-voteCh
// we should prevote what we're locked on
validatePrevote(t, cs1, 2, vss[0], propBlockHash)
newStepCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRoundStep(), 1)
// add prevotes from the earlier round
addVoteToFromMany(cs1, prevotes, cs2, cs3, cs4)
log.Warn("Done adding prevotes!")
ensureNoNewStep(newStepCh)
}
// 4 vals, one precommits, other 3 polka at next round, so we unlock and precomit the polka
func TestLockPOLUnlock(t *testing.T) {
cs1, vss := randConsensusState(4)
cs2, cs3, cs4 := vss[1], vss[2], vss[3]
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
timeoutProposeCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutPropose(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
unlockCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringUnlock(), 1)
voteCh := subscribeToVoter(cs1, cs1.privValidator.Address)
// everything done from perspective of cs1
/*
Round1 (cs1, B) // B B B B // B nil B nil
eg. didn't see the 2/3 prevotes
*/
// start round and wait for propose and prevote
startTestRound(cs1, cs1.Height, 0)
<-newRoundCh
re := <-proposalCh
rs := re.(types.EventDataRoundState).RoundState.(*RoundState)
theBlockHash := rs.ProposalBlock.Hash()
<-voteCh // prevote
signAddVoteToFromMany(types.VoteTypePrevote, cs1, cs1.ProposalBlock.Hash(), cs1.ProposalBlockParts.Header(), cs2, cs3, cs4)
<-voteCh //precommit
// the proposed block should now be locked and our precommit added
validatePrecommit(t, cs1, 0, 0, vss[0], theBlockHash, theBlockHash)
// add precommits from the rest
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs4)
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs3, cs1.ProposalBlock.Hash(), cs1.ProposalBlockParts.Header())
// before we time out into new round, set next proposal block
prop, propBlock := decideProposal(cs1, cs2, cs2.Height, cs2.Round+1)
propBlockParts := propBlock.MakePartSet()
incrementRound(cs2, cs3, cs4)
// timeout to new round
re = <-timeoutWaitCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
lockedBlockHash := rs.LockedBlock.Hash()
//XXX: this isnt gauranteed to get there before the timeoutPropose ...
cs1.SetProposalAndBlock(prop, propBlock, propBlockParts, "some peer")
<-newRoundCh
log.Notice("#### ONTO ROUND 1")
/*
Round2 (cs2, C) // B nil nil nil // nil nil nil _
cs1 unlocks!
*/
// now we're on a new round and not the proposer,
// but we should receive the proposal
select {
case <-proposalCh:
case <-timeoutProposeCh:
<-proposalCh
}
// go to prevote, prevote for locked block (not proposal)
<-voteCh
validatePrevote(t, cs1, 0, vss[0], lockedBlockHash)
// now lets add prevotes from everyone else for nil (a polka!)
signAddVoteToFromMany(types.VoteTypePrevote, cs1, nil, types.PartSetHeader{}, cs2, cs3, cs4)
// the polka makes us unlock and precommit nil
<-unlockCh
<-voteCh // precommit
// we should have unlocked and committed nil
// NOTE: since we don't relock on nil, the lock round is 0
validatePrecommit(t, cs1, 1, 0, vss[0], nil, nil)
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs3)
<-newRoundCh
}
// 4 vals, one precommits, other 3 polka at next round, so we unlock and precomit the polka
func TestLockPOLRelock(t *testing.T) {
cs1, vss := randConsensusState(4)
cs2, cs3, cs4 := vss[1], vss[2], vss[3]
timeoutProposeCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutPropose(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
voteCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringVote(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
newBlockCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewBlock(), 1)
log.Debug("cs2 last round", "lr", cs2.PrivValidator.LastRound)
// everything done from perspective of cs1
/*
Round1 (cs1, B) // B B B B// B nil B nil
eg. cs2 and cs4 didn't see the 2/3 prevotes
*/
// start round and wait for propose and prevote
startTestRound(cs1, cs1.Height, 0)
<-newRoundCh
re := <-proposalCh
rs := re.(types.EventDataRoundState).RoundState.(*RoundState)
theBlockHash := rs.ProposalBlock.Hash()
<-voteCh // prevote
signAddVoteToFromMany(types.VoteTypePrevote, cs1, cs1.ProposalBlock.Hash(), cs1.ProposalBlockParts.Header(), cs2, cs3, cs4)
_, _, _ = <-voteCh, <-voteCh, <-voteCh // prevotes
<-voteCh // our precommit
// the proposed block should now be locked and our precommit added
validatePrecommit(t, cs1, 0, 0, vss[0], theBlockHash, theBlockHash)
// add precommits from the rest
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, nil, types.PartSetHeader{}, cs2, cs4)
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs3, cs1.ProposalBlock.Hash(), cs1.ProposalBlockParts.Header())
_, _, _ = <-voteCh, <-voteCh, <-voteCh // precommits
// before we timeout to the new round set the new proposal
prop, propBlock := decideProposal(cs1, cs2, cs2.Height, cs2.Round+1)
propBlockParts := propBlock.MakePartSet()
propBlockHash := propBlock.Hash()
incrementRound(cs2, cs3, cs4)
// timeout to new round
<-timeoutWaitCh
//XXX: this isnt gauranteed to get there before the timeoutPropose ...
cs1.SetProposalAndBlock(prop, propBlock, propBlockParts, "some peer")
<-newRoundCh
log.Notice("### ONTO ROUND 1")
/*
Round2 (cs2, C) // B C C C // C C C _)
cs1 changes lock!
*/
// now we're on a new round and not the proposer
// but we should receive the proposal
select {
case <-proposalCh:
case <-timeoutProposeCh:
<-proposalCh
}
// go to prevote, prevote for locked block (not proposal), move on
<-voteCh
validatePrevote(t, cs1, 0, vss[0], theBlockHash)
// now lets add prevotes from everyone else for the new block
signAddVoteToFromMany(types.VoteTypePrevote, cs1, propBlockHash, propBlockParts.Header(), cs2, cs3, cs4)
_, _, _ = <-voteCh, <-voteCh, <-voteCh // prevotes
// now either we go to PrevoteWait or Precommit
select {
case <-timeoutWaitCh: // we're in PrevoteWait, go to Precommit
<-voteCh
case <-voteCh: // we went straight to Precommit
}
// we should have unlocked and locked on the new block
validatePrecommit(t, cs1, 1, 1, vss[0], propBlockHash, propBlockHash)
signAddVoteToFromMany(types.VoteTypePrecommit, cs1, propBlockHash, propBlockParts.Header(), cs2, cs3)
_, _ = <-voteCh, <-voteCh
be := <-newBlockCh
b := be.(types.EventDataNewBlock)
re = <-newRoundCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
if rs.Height != 2 {
t.Fatal("Expected height to increment")
}
if !bytes.Equal(b.Block.Hash(), propBlockHash) {
t.Fatal("Expected new block to be proposal block")
}
}
// two validators, 4 rounds.
// two vals take turns proposing. val1 locks on first one, precommits nil on everything else
func TestLockNoPOL(t *testing.T) {
cs1, vss := randConsensusState(2)
cs2 := vss[1]
height := cs1.Height
timeoutProposeCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutPropose(), 1)
timeoutWaitCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringTimeoutWait(), 1)
voteCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringVote(), 1)
proposalCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringCompleteProposal(), 1)
newRoundCh := subscribeToEvent(cs1.evsw, "tester", types.EventStringNewRound(), 1)
/*
Round1 (cs1, B) // B B // B B2
*/
// start round and wait for prevote
cs1.enterNewRound(height, 0)
cs1.startRoutines(0)
re := <-proposalCh
rs := re.(types.EventDataRoundState).RoundState.(*RoundState)
theBlockHash := rs.ProposalBlock.Hash()
<-voteCh // prevote
// we should now be stuck in limbo forever, waiting for more prevotes
// prevote arrives from cs2:
signAddVoteToFrom(types.VoteTypePrevote, cs1, cs2, cs1.ProposalBlock.Hash(), cs1.ProposalBlockParts.Header())
<-voteCh // prevote
<-voteCh // precommit
// the proposed block should now be locked and our precommit added
validatePrecommit(t, cs1, 0, 0, vss[0], theBlockHash, theBlockHash)
// we should now be stuck in limbo forever, waiting for more precommits
// lets add one for a different block
// NOTE: in practice we should never get to a point where there are precommits for different blocks at the same round
hash := make([]byte, len(theBlockHash))
copy(hash, theBlockHash)
hash[0] = byte((hash[0] + 1) % 255)
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs2, hash, rs.ProposalBlock.MakePartSet().Header())
<-voteCh // precommit
// (note we're entering precommit for a second time this round)
// but with invalid args. then we enterPrecommitWait, and the timeout to new round
<-timeoutWaitCh
///
<-newRoundCh
log.Notice("#### ONTO ROUND 1")
/*
Round2 (cs1, B) // B B2
*/
incrementRound(cs2)
// now we're on a new round and not the proposer, so wait for timeout
re = <-timeoutProposeCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
if rs.ProposalBlock != nil {
t.Fatal("Expected proposal block to be nil")
}
// wait to finish prevote
<-voteCh
// we should have prevoted our locked block
validatePrevote(t, cs1, 1, vss[0], rs.LockedBlock.Hash())
// add a conflicting prevote from the other validator
signAddVoteToFrom(types.VoteTypePrevote, cs1, cs2, hash, rs.ProposalBlock.MakePartSet().Header())
<-voteCh
// now we're going to enter prevote again, but with invalid args
// and then prevote wait, which should timeout. then wait for precommit
<-timeoutWaitCh
<-voteCh // precommit
// the proposed block should still be locked and our precommit added
// we should precommit nil and be locked on the proposal
validatePrecommit(t, cs1, 1, 0, vss[0], nil, theBlockHash)
// add conflicting precommit from cs2
// NOTE: in practice we should never get to a point where there are precommits for different blocks at the same round
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs2, hash, rs.ProposalBlock.MakePartSet().Header())
<-voteCh
// (note we're entering precommit for a second time this round, but with invalid args
// then we enterPrecommitWait and timeout into NewRound
<-timeoutWaitCh
<-newRoundCh
log.Notice("#### ONTO ROUND 2")
/*
Round3 (cs2, _) // B, B2
*/
incrementRound(cs2)
re = <-proposalCh
rs = re.(types.EventDataRoundState).RoundState.(*RoundState)
// now we're on a new round and are the proposer
if !bytes.Equal(rs.ProposalBlock.Hash(), rs.LockedBlock.Hash()) {
t.Fatalf("Expected proposal block to be locked block. Got %v, Expected %v", rs.ProposalBlock, rs.LockedBlock)
}
<-voteCh // prevote
validatePrevote(t, cs1, 2, vss[0], rs.LockedBlock.Hash())
signAddVoteToFrom(types.VoteTypePrevote, cs1, cs2, hash, rs.ProposalBlock.MakePartSet().Header())
<-voteCh
<-timeoutWaitCh // prevote wait
<-voteCh // precommit
validatePrecommit(t, cs1, 2, 0, vss[0], nil, theBlockHash) // precommit nil but be locked on proposal
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs2, hash, rs.ProposalBlock.MakePartSet().Header()) // NOTE: conflicting precommits at same height
<-voteCh
<-timeoutWaitCh
// before we time out into new round, set next proposal block
prop, propBlock := decideProposal(cs1, cs2, cs2.Height, cs2.Round+1)
if prop == nil || propBlock == nil {
t.Fatal("Failed to create proposal block with cs2")
}
incrementRound(cs2)
<-newRoundCh
log.Notice("#### ONTO ROUND 3")
/*
Round4 (cs2, C) // B C // B C
*/
// now we're on a new round and not the proposer
// so set the proposal block
cs1.SetProposalAndBlock(prop, propBlock, propBlock.MakePartSet(), "")
<-proposalCh
<-voteCh // prevote
// prevote for locked block (not proposal)
validatePrevote(t, cs1, 0, vss[0], cs1.LockedBlock.Hash())
signAddVoteToFrom(types.VoteTypePrevote, cs1, cs2, propBlock.Hash(), propBlock.MakePartSet().Header())
<-voteCh
<-timeoutWaitCh
<-voteCh
validatePrecommit(t, cs1, 2, 0, vss[0], nil, theBlockHash) // precommit nil but locked on proposal
signAddVoteToFrom(types.VoteTypePrecommit, cs1, cs2, propBlock.Hash(), propBlock.MakePartSet().Header()) // NOTE: conflicting precommits at same height
<-voteCh
}
