func (s *State) validateBlock(block *types.Block) error {
// Basic block validation.
err := block.ValidateBasic(s.ChainID, s.LastBlockHeight, s.LastBlockHash, s.LastBlockParts, s.LastBlockTime, s.AppHash)
if err != nil {
return err
}
// Validate block LastValidation.
if block.Height == 1 {
if len(block.LastValidation.Precommits) != 0 {
return errors.New("Block at height 1 (first block) should have no LastValidation precommits")
}
} else {
if len(block.LastValidation.Precommits) != s.LastValidators.Size() {
return fmt.Errorf("Invalid block validation size. Expected %v, got %v",
s.LastValidators.Size(), len(block.LastValidation.Precommits))
}
err := s.LastValidators.VerifyValidation(
s.ChainID, s.LastBlockHash, s.LastBlockParts, block.Height-1, block.LastValidation)
if err != nil {
return err
}
}
return nil
}
// executes transactions of a block, does not check block.StateHash
// NOTE: If an error occurs during block execution, state will be left
// at an invalid state. Copy the state before calling execBlock!
func execBlock(s *State, block *types.Block, blockPartsHeader types.PartSetHeader) error {
// Basic block validation.
err := block.ValidateBasic(s.ChainID, s.LastBlockHeight, s.LastBlockHash, s.LastBlockParts, s.LastBlockTime)
if err != nil {
return err
}
// Validate block LastValidation.
if block.Height == 1 {
if len(block.LastValidation.Precommits) != 0 {
return errors.New("Block at height 1 (first block) should have no LastValidation precommits")
}
} else {
if len(block.LastValidation.Precommits) != s.LastBondedValidators.Size() {
return errors.New(Fmt("Invalid block validation size. Expected %v, got %v",
s.LastBondedValidators.Size(), len(block.LastValidation.Precommits)))
}
err := s.LastBondedValidators.VerifyValidation(
s.ChainID, s.LastBlockHash, s.LastBlockParts, block.Height-1, block.LastValidation)
if err != nil {
return err
}
}
// Update Validator.LastCommitHeight as necessary.
for i, precommit := range block.LastValidation.Precommits {
if precommit == nil {
continue
}
_, val := s.LastBondedValidators.GetByIndex(i)
if val == nil {
PanicCrisis(Fmt("Failed to fetch validator at index %v", i))
}
if _, val_ := s.BondedValidators.GetByAddress(val.Address); val_ != nil {
val_.LastCommitHeight = block.Height - 1
updated := s.BondedValidators.Update(val_)
if !updated {
PanicCrisis("Failed to update bonded validator LastCommitHeight")
}
} else if _, val_ := s.UnbondingValidators.GetByAddress(val.Address); val_ != nil {
val_.LastCommitHeight = block.Height - 1
updated := s.UnbondingValidators.Update(val_)
if !updated {
PanicCrisis("Failed to update unbonding validator LastCommitHeight")
}
} else {
PanicCrisis("Could not find validator")
}
}
// Remember LastBondedValidators
s.LastBondedValidators = s.BondedValidators.Copy()
// Create BlockCache to cache changes to state.
blockCache := NewBlockCache(s)
// Execute each tx
for _, tx := range block.Data.Txs {
err := ExecTx(blockCache, tx, true, s.evc)
if err != nil {
return InvalidTxError{tx, err}
}
}
// Now sync the BlockCache to the backend.
blockCache.Sync()
// If any unbonding periods are over,
// reward account with bonded coins.
toRelease := []*types.Validator{}
s.UnbondingValidators.Iterate(func(index int, val *types.Validator) bool {
if val.UnbondHeight+unbondingPeriodBlocks < block.Height {
toRelease = append(toRelease, val)
}
return false
})
for _, val := range toRelease {
s.releaseValidator(val)
}
// If any validators haven't signed in a while,
// unbond them, they have timed out.
toTimeout := []*types.Validator{}
s.BondedValidators.Iterate(func(index int, val *types.Validator) bool {
lastActivityHeight := MaxInt(val.BondHeight, val.LastCommitHeight)
if lastActivityHeight+validatorTimeoutBlocks < block.Height {
log.Notice("Validator timeout", "validator", val, "height", block.Height)
toTimeout = append(toTimeout, val)
}
return false
})
for _, val := range toTimeout {
s.unbondValidator(val)
}
// Increment validator AccumPowers
s.BondedValidators.IncrementAccum(1)
s.LastBlockHeight = block.Height
s.LastBlockHash = block.Hash()
s.LastBlockParts = blockPartsHeader
s.LastBlockTime = block.Time
return nil
}
// executes transactions of a block, does not check block.StateHash
// NOTE: If an error occurs during block execution, state will be left
// at an invalid state. Copy the state before calling execBlock!
func execBlock(s *State, block *types.Block, blockPartsHeader types.PartSetHeader) error {
// Basic block validation.
err := block.ValidateBasic(s.LastBlockHeight, s.LastBlockHash, s.LastBlockParts, s.LastBlockTime)
if err != nil {
return err
}
// Validate block Validation.
if block.Height == 1 {
if len(block.Validation.Commits) != 0 {
return errors.New("Block at height 1 (first block) should have no Validation commits")
}
} else {
if uint(len(block.Validation.Commits)) != s.LastBondedValidators.Size() {
return errors.New(Fmt("Invalid block validation size. Expected %v, got %v",
s.LastBondedValidators.Size(), len(block.Validation.Commits)))
}
var sumVotingPower uint64
s.LastBondedValidators.Iterate(func(index uint, val *Validator) bool {
commit := block.Validation.Commits[index]
if commit.IsZero() {
return false
} else {
vote := &types.Vote{
Height: block.Height - 1,
Round: commit.Round,
Type: types.VoteTypeCommit,
BlockHash: block.LastBlockHash,
BlockParts: block.LastBlockParts,
}
if val.PubKey.VerifyBytes(account.SignBytes(vote), commit.Signature) {
sumVotingPower += val.VotingPower
return false
} else {
log.Warn(Fmt("Invalid validation signature.\nval: %v\nvote: %v", val, vote))
err = errors.New("Invalid validation signature")
return true
}
}
})
if err != nil {
return err
}
if sumVotingPower <= s.LastBondedValidators.TotalVotingPower()*2/3 {
return errors.New("Insufficient validation voting power")
}
}
// Update Validator.LastCommitHeight as necessary.
for i, commit := range block.Validation.Commits {
if commit.IsZero() {
continue
}
_, val := s.LastBondedValidators.GetByIndex(uint(i))
if val == nil {
panic(Fmt("Failed to fetch validator at index %v", i))
}
if _, val_ := s.BondedValidators.GetByAddress(val.Address); val_ != nil {
val_.LastCommitHeight = block.Height - 1
updated := s.BondedValidators.Update(val_)
if !updated {
panic("Failed to update bonded validator LastCommitHeight")
}
} else if _, val_ := s.UnbondingValidators.GetByAddress(val.Address); val_ != nil {
val_.LastCommitHeight = block.Height - 1
updated := s.UnbondingValidators.Update(val_)
if !updated {
panic("Failed to update unbonding validator LastCommitHeight")
}
} else {
panic("Could not find validator")
}
}
// Remember LastBondedValidators
s.LastBondedValidators = s.BondedValidators.Copy()
// Create BlockCache to cache changes to state.
blockCache := NewBlockCache(s)
// Commit each tx
for _, tx := range block.Data.Txs {
err := ExecTx(blockCache, tx, true, s.evc)
if err != nil {
return InvalidTxError{tx, err}
}
}
// Now sync the BlockCache to the backend.
blockCache.Sync()
// If any unbonding periods are over,
// reward account with bonded coins.
toRelease := []*Validator{}
s.UnbondingValidators.Iterate(func(index uint, val *Validator) bool {
if val.UnbondHeight+unbondingPeriodBlocks < block.Height {
toRelease = append(toRelease, val)
}
return false
})
for _, val := range toRelease {
s.releaseValidator(val)
}
// If any validators haven't signed in a while,
// unbond them, they have timed out.
toTimeout := []*Validator{}
s.BondedValidators.Iterate(func(index uint, val *Validator) bool {
lastActivityHeight := MaxUint(val.BondHeight, val.LastCommitHeight)
if lastActivityHeight+validatorTimeoutBlocks < block.Height {
log.Info("Validator timeout", "validator", val, "height", block.Height)
toTimeout = append(toTimeout, val)
}
return false
})
for _, val := range toTimeout {
s.unbondValidator(val)
}
// Increment validator AccumPowers
s.BondedValidators.IncrementAccum(1)
s.LastBlockHeight = block.Height
s.LastBlockHash = block.Hash()
s.LastBlockParts = blockPartsHeader
s.LastBlockTime = block.Time
return nil
}