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Code Issues Packages Projects Releases Wiki Activity

evidence: introduction of LightClientAttackEvidence and refactor of evidence lifecycle (#5361)

Browse Source 
evidence: modify evidence types (#5342)

light: detect light client attacks (#5344)

evidence: refactor evidence pool (#5345)

abci: application evidence prepared by evidence pool (#5354)
This commit is contained in:
Callum Waters
2020-09-22 10:22:54 +02:00
committed by GitHub
parent 309e29c245
commit ed002cea7e
57 changed files with 3240 additions and 1241 deletions
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22
consensus/state.go
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@@ -73,7 +73,9 @@ type txNotifier interface {
// interface to the evidence pool
type evidencePool interface {
AddEvidence(types.Evidence) error
// Adds consensus based evidence to the evidence pool where time is the time
// of the block where the offense occurred and the validator set is the current one.
AddEvidenceFromConsensus(types.Evidence, time.Time, *types.ValidatorSet) error
}
// State handles execution of the consensus algorithm.
@@ -1681,13 +1683,20 @@ func (cs *State) recordMetrics(height int64, block *types.Block) {
cs.metrics.MissingValidators.Set(float64(missingValidators))
cs.metrics.MissingValidatorsPower.Set(float64(missingValidatorsPower))
cs.metrics.ByzantineValidators.Set(float64(len(block.Evidence.Evidence)))
byzantineValidatorsPower := int64(0)
// NOTE: byzantine validators power and count is only for consensus evidence i.e. duplicate vote
var (
byzantineValidatorsPower = int64(0)
byzantineValidatorsCount = int64(0)
)
for _, ev := range block.Evidence.Evidence {
if _, val := cs.Validators.GetByAddress(ev.Address()); val != nil {
byzantineValidatorsPower += val.VotingPower
if dve, ok := ev.(*types.DuplicateVoteEvidence); ok {
if _, val := cs.Validators.GetByAddress(dve.VoteA.ValidatorAddress); val != nil {
byzantineValidatorsCount++
byzantineValidatorsPower += val.VotingPower
}
}
}
cs.metrics.ByzantineValidators.Set(float64(byzantineValidatorsCount))
cs.metrics.ByzantineValidatorsPower.Set(float64(byzantineValidatorsPower))
if height > 1 {
@@ -1855,7 +1864,8 @@ func (cs *State) tryAddVote(vote *types.Vote, peerID p2p.ID) (bool, error) {
} else {
timestamp = sm.MedianTime(cs.LastCommit.MakeCommit(), cs.LastValidators)
}
evidenceErr := cs.evpool.AddEvidence(types.NewDuplicateVoteEvidence(voteErr.VoteA, voteErr.VoteB, timestamp))
evidenceErr := cs.evpool.AddEvidenceFromConsensus(
types.NewDuplicateVoteEvidence(voteErr.VoteA, voteErr.VoteB), timestamp, cs.Validators)
if evidenceErr != nil {
cs.Logger.Error("Failed to add evidence to the evidence pool", "err", evidenceErr)
}