package consensus import ( "bytes" "fmt" "io/ioutil" "os" "path" "sort" "sync" "testing" "time" "github.com/spf13/viper" abcicli "github.com/tendermint/abci/client" abci "github.com/tendermint/abci/types" bc "github.com/tendermint/tendermint/blockchain" "github.com/tendermint/tendermint/config/tendermint_test" mempl "github.com/tendermint/tendermint/mempool" "github.com/tendermint/tendermint/p2p" sm "github.com/tendermint/tendermint/state" "github.com/tendermint/tendermint/types" . "github.com/tendermint/tmlibs/common" dbm "github.com/tendermint/tmlibs/db" "github.com/tendermint/abci/example/counter" "github.com/tendermint/abci/example/dummy" ) var config *viper.Viper // NOTE: must be reset for each _test.go file var ensureTimeout = time.Duration(2) func ensureDir(dir string, mode os.FileMode) { if err := EnsureDir(dir, mode); err != nil { panic(err) } } //------------------------------------------------------------------------------- // validator stub (a dummy consensus peer we control) type validatorStub struct { Index int // Validator index. NOTE: we don't assume validator set changes. Height int Round int *types.PrivValidator } var testMinPower = 10 func NewValidatorStub(privValidator *types.PrivValidator, valIndex int) *validatorStub { return &validatorStub{ Index: valIndex, PrivValidator: privValidator, } } func (vs *validatorStub) signVote(voteType byte, hash []byte, header types.PartSetHeader) (*types.Vote, error) { vote := &types.Vote{ ValidatorIndex: vs.Index, ValidatorAddress: vs.PrivValidator.Address, Height: vs.Height, Round: vs.Round, Type: voteType, BlockID: types.BlockID{hash, header}, } err := vs.PrivValidator.SignVote(config.GetString("chain_id"), vote) return vote, err } // Sign vote for type/hash/header func signVote(vs *validatorStub, voteType byte, hash []byte, header types.PartSetHeader) *types.Vote { v, err := vs.signVote(voteType, hash, header) if err != nil { panic(fmt.Errorf("failed to sign vote: %v", err)) } return v } func signVotes(voteType byte, hash []byte, header types.PartSetHeader, vss ...*validatorStub) []*types.Vote { votes := make([]*types.Vote, len(vss)) for i, vs := range vss { votes[i] = signVote(vs, voteType, hash, header) } return votes } func incrementHeight(vss ...*validatorStub) { for _, vs := range vss { vs.Height += 1 } } func incrementRound(vss ...*validatorStub) { for _, vs := range vss { vs.Round += 1 } } //------------------------------------------------------------------------------- // Functions for transitioning the consensus state func startTestRound(cs *ConsensusState, height, round int) { cs.enterNewRound(height, round) cs.startRoutines(0) } // Create proposal block from cs1 but sign it with vs func decideProposal(cs1 *ConsensusState, vs *validatorStub, height, round int) (proposal *types.Proposal, block *types.Block) { block, blockParts := cs1.createProposalBlock() if block == nil { // on error panic("error creating proposal block") } // Make proposal polRound, polBlockID := cs1.Votes.POLInfo() proposal = types.NewProposal(height, round, blockParts.Header(), polRound, polBlockID) if err := vs.SignProposal(config.GetString("chain_id"), proposal); err != nil { panic(err) } return } func addVotes(to *ConsensusState, votes ...*types.Vote) { for _, vote := range votes { to.peerMsgQueue <- msgInfo{Msg: &VoteMessage{vote}} } } func signAddVotes(to *ConsensusState, voteType byte, hash []byte, header types.PartSetHeader, vss ...*validatorStub) { votes := signVotes(voteType, hash, header, vss...) addVotes(to, votes...) } func validatePrevote(t *testing.T, cs *ConsensusState, round int, privVal *validatorStub, blockHash []byte) { prevotes := cs.Votes.Prevotes(round) var vote *types.Vote if vote = prevotes.GetByAddress(privVal.Address); vote == nil { panic("Failed to find prevote from validator") } if blockHash == nil { if vote.BlockID.Hash != nil { panic(fmt.Sprintf("Expected prevote to be for nil, got %X", vote.BlockID.Hash)) } } else { if !bytes.Equal(vote.BlockID.Hash, blockHash) { panic(fmt.Sprintf("Expected prevote to be for %X, got %X", blockHash, vote.BlockID.Hash)) } } } func validateLastPrecommit(t *testing.T, cs *ConsensusState, privVal *validatorStub, blockHash []byte) { votes := cs.LastCommit var vote *types.Vote if vote = votes.GetByAddress(privVal.Address); vote == nil { panic("Failed to find precommit from validator") } if !bytes.Equal(vote.BlockID.Hash, blockHash) { panic(fmt.Sprintf("Expected precommit to be for %X, got %X", blockHash, vote.BlockID.Hash)) } } func validatePrecommit(t *testing.T, cs *ConsensusState, thisRound, lockRound int, privVal *validatorStub, votedBlockHash, lockedBlockHash []byte) { precommits := cs.Votes.Precommits(thisRound) var vote *types.Vote if vote = precommits.GetByAddress(privVal.Address); vote == nil { panic("Failed to find precommit from validator") } if votedBlockHash == nil { if vote.BlockID.Hash != nil { panic("Expected precommit to be for nil") } } else { if !bytes.Equal(vote.BlockID.Hash, votedBlockHash) { panic("Expected precommit to be for proposal block") } } if lockedBlockHash == nil { if cs.LockedRound != lockRound || cs.LockedBlock != nil { panic(fmt.Sprintf("Expected to be locked on nil at round %d. Got locked at round %d with block %v", lockRound, cs.LockedRound, cs.LockedBlock)) } } else { if cs.LockedRound != lockRound || !bytes.Equal(cs.LockedBlock.Hash(), lockedBlockHash) { panic(fmt.Sprintf("Expected block to be locked on round %d, got %d. Got locked block %X, expected %X", lockRound, cs.LockedRound, cs.LockedBlock.Hash(), lockedBlockHash)) } } } func validatePrevoteAndPrecommit(t *testing.T, cs *ConsensusState, thisRound, lockRound int, privVal *validatorStub, votedBlockHash, lockedBlockHash []byte) { // verify the prevote validatePrevote(t, cs, thisRound, privVal, votedBlockHash) // verify precommit cs.mtx.Lock() validatePrecommit(t, cs, thisRound, lockRound, privVal, votedBlockHash, lockedBlockHash) cs.mtx.Unlock() } // genesis func subscribeToVoter(cs *ConsensusState, addr []byte) chan interface{} { voteCh0 := subscribeToEvent(cs.evsw, "tester", types.EventStringVote(), 1) voteCh := make(chan interface{}) go func() { for { v := <-voteCh0 vote := v.(types.TMEventData).Unwrap().(types.EventDataVote) // we only fire for our own votes if bytes.Equal(addr, vote.Vote.ValidatorAddress) { voteCh <- v } } }() return voteCh } func readVotes(ch chan interface{}, reads int) chan struct{} { wg := make(chan struct{}) go func() { for i := 0; i < reads; i++ { <-ch // read the precommit event } close(wg) }() return wg } //------------------------------------------------------------------------------- // consensus states func newConsensusState(state *sm.State, pv *types.PrivValidator, app abci.Application) *ConsensusState { return newConsensusStateWithConfig(config, state, pv, app) } func newConsensusStateWithConfig(thisConfig *viper.Viper, state *sm.State, pv *types.PrivValidator, app abci.Application) *ConsensusState { // Get BlockStore blockDB := dbm.NewMemDB() blockStore := bc.NewBlockStore(blockDB) // one for mempool, one for consensus mtx := new(sync.Mutex) proxyAppConnMem := abcicli.NewLocalClient(mtx, app) proxyAppConnCon := abcicli.NewLocalClient(mtx, app) // Make Mempool mempool := mempl.NewMempool(thisConfig, proxyAppConnMem) // Make ConsensusReactor cs := NewConsensusState(thisConfig, state, proxyAppConnCon, blockStore, mempool) cs.SetPrivValidator(pv) evsw := types.NewEventSwitch() cs.SetEventSwitch(evsw) evsw.Start() return cs } func loadPrivValidator(conf *viper.Viper) *types.PrivValidator { privValidatorFile := conf.GetString("priv_validator_file") ensureDir(path.Dir(privValidatorFile), 0700) privValidator := types.LoadOrGenPrivValidator(privValidatorFile) privValidator.Reset() return privValidator } func fixedConsensusState() *ConsensusState { stateDB := dbm.NewMemDB() state := sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file")) privValidator := loadPrivValidator(config) cs := newConsensusState(state, privValidator, counter.NewCounterApplication(true)) return cs } func fixedConsensusStateDummy() *ConsensusState { stateDB := dbm.NewMemDB() state := sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file")) privValidator := loadPrivValidator(config) cs := newConsensusState(state, privValidator, dummy.NewDummyApplication()) return cs } func randConsensusState(nValidators int) (*ConsensusState, []*validatorStub) { // Get State state, privVals := randGenesisState(nValidators, false, 10) vss := make([]*validatorStub, nValidators) cs := newConsensusState(state, privVals[0], counter.NewCounterApplication(true)) for i := 0; i < nValidators; i++ { vss[i] = NewValidatorStub(privVals[i], i) } // since cs1 starts at 1 incrementHeight(vss[1:]...) return cs, vss } //------------------------------------------------------------------------------- func ensureNoNewStep(stepCh chan interface{}) { timeout := time.NewTicker(ensureTimeout * time.Second) select { case <-timeout.C: break case <-stepCh: panic("We should be stuck waiting for more votes, not moving to the next step") } } //------------------------------------------------------------------------------- // consensus nets func randConsensusNet(nValidators int, testName string, tickerFunc func() TimeoutTicker, appFunc func() abci.Application) []*ConsensusState { genDoc, privVals := randGenesisDoc(nValidators, false, 10) css := make([]*ConsensusState, nValidators) for i := 0; i < nValidators; i++ { db := dbm.NewMemDB() // each state needs its own db state := sm.MakeGenesisState(db, genDoc) state.Save() thisConfig := tendermint_test.ResetConfig(Fmt("%s_%d", testName, i)) ensureDir(path.Dir(thisConfig.GetString("cs_wal_file")), 0700) // dir for wal css[i] = newConsensusStateWithConfig(thisConfig, state, privVals[i], appFunc()) css[i].SetTimeoutTicker(tickerFunc()) } return css } // nPeers = nValidators + nNotValidator func randConsensusNetWithPeers(nValidators, nPeers int, testName string, tickerFunc func() TimeoutTicker, appFunc func() abci.Application) []*ConsensusState { genDoc, privVals := randGenesisDoc(nValidators, false, int64(testMinPower)) css := make([]*ConsensusState, nPeers) for i := 0; i < nPeers; i++ { db := dbm.NewMemDB() // each state needs its own db state := sm.MakeGenesisState(db, genDoc) state.Save() thisConfig := tendermint_test.ResetConfig(Fmt("%s_%d", testName, i)) ensureDir(path.Dir(thisConfig.GetString("cs_wal_file")), 0700) // dir for wal var privVal *types.PrivValidator if i < nValidators { privVal = privVals[i] } else { privVal = types.GenPrivValidator() _, tempFilePath := Tempfile("priv_validator_") privVal.SetFile(tempFilePath) } css[i] = newConsensusStateWithConfig(thisConfig, state, privVal, appFunc()) css[i].SetTimeoutTicker(tickerFunc()) } return css } func getSwitchIndex(switches []*p2p.Switch, peer *p2p.Peer) int { for i, s := range switches { if bytes.Equal(peer.NodeInfo.PubKey.Address(), s.NodeInfo().PubKey.Address()) { return i } } panic("didnt find peer in switches") return -1 } //------------------------------------------------------------------------------- // genesis func randGenesisDoc(numValidators int, randPower bool, minPower int64) (*types.GenesisDoc, []*types.PrivValidator) { validators := make([]types.GenesisValidator, numValidators) privValidators := make([]*types.PrivValidator, numValidators) for i := 0; i < numValidators; i++ { val, privVal := types.RandValidator(randPower, minPower) validators[i] = types.GenesisValidator{ PubKey: val.PubKey, Amount: val.VotingPower, } privValidators[i] = privVal } sort.Sort(types.PrivValidatorsByAddress(privValidators)) return &types.GenesisDoc{ GenesisTime: time.Now(), ChainID: config.GetString("chain_id"), Validators: validators, }, privValidators } func randGenesisState(numValidators int, randPower bool, minPower int64) (*sm.State, []*types.PrivValidator) { genDoc, privValidators := randGenesisDoc(numValidators, randPower, minPower) db := dbm.NewMemDB() s0 := sm.MakeGenesisState(db, genDoc) s0.Save() return s0, privValidators } //------------------------------------ // mock ticker func newMockTickerFunc(onlyOnce bool) func() TimeoutTicker { return func() TimeoutTicker { return &mockTicker{ c: make(chan timeoutInfo, 10), onlyOnce: onlyOnce, } } } // mock ticker only fires on RoundStepNewHeight // and only once if onlyOnce=true type mockTicker struct { c chan timeoutInfo mtx sync.Mutex onlyOnce bool fired bool } func (m *mockTicker) Start() (bool, error) { return true, nil } func (m *mockTicker) Stop() bool { return true } func (m *mockTicker) ScheduleTimeout(ti timeoutInfo) { m.mtx.Lock() defer m.mtx.Unlock() if m.onlyOnce && m.fired { return } if ti.Step == RoundStepNewHeight { m.c <- ti m.fired = true } } func (m *mockTicker) Chan() <-chan timeoutInfo { return m.c } //------------------------------------ func newCounter() abci.Application { return counter.NewCounterApplication(true) } func newPersistentDummy() abci.Application { dir, _ := ioutil.TempDir("/tmp", "persistent-dummy") return dummy.NewPersistentDummyApplication(dir) }