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