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Delay validator set changes by 1 block.

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This commit is contained in:
Jae Kwon
2018-05-29 01:03:03 -07:00
parent ce0d0b312f
commit a5b7ea93c4
14 changed files with 172 additions and 155 deletions
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12
state/validation.go
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@ -13,12 +13,12 @@ import (
// Validate block
func validateBlock(stateDB dbm.DB, state State, block *types.Block) error {
// validate internal consistency
// Validate internal consistency.
if err := block.ValidateBasic(); err != nil {
return err
}
// validate basic info
// Validate basic info.
if block.ChainID != state.ChainID {
return fmt.Errorf("Wrong Block.Header.ChainID. Expected %v, got %v", state.ChainID, block.ChainID)
}
@ -33,7 +33,7 @@ func validateBlock(stateDB dbm.DB, state State, block *types.Block) error {
}
*/
// validate prev block info
// Validate prev block info.
if !block.LastBlockID.Equals(state.LastBlockID) {
return fmt.Errorf("Wrong Block.Header.LastBlockID. Expected %v, got %v", state.LastBlockID, block.LastBlockID)
}
@ -42,7 +42,7 @@ func validateBlock(stateDB dbm.DB, state State, block *types.Block) error {
return fmt.Errorf("Wrong Block.Header.TotalTxs. Expected %v, got %v", state.LastBlockTotalTx+newTxs, block.TotalTxs)
}
// validate app info
// Validate app info
if !bytes.Equal(block.AppHash, state.AppHash) {
return fmt.Errorf("Wrong Block.Header.AppHash. Expected %X, got %v", state.AppHash, block.AppHash)
}
@ -55,6 +55,9 @@ func validateBlock(stateDB dbm.DB, state State, block *types.Block) error {
if !bytes.Equal(block.ValidatorsHash, state.Validators.Hash()) {
return fmt.Errorf("Wrong Block.Header.ValidatorsHash. Expected %X, got %v", state.Validators.Hash(), block.ValidatorsHash)
}
if !bytes.Equal(block.NextValidatorsHash, state.NextValidators.Hash()) {
return fmt.Errorf("Wrong Block.Header.NextValidatorsHash. Expected %X, got %v", state.NextValidators.Hash(), block.NextValidatorsHash)
}
// Validate block LastCommit.
if block.Height == 1 {
@ -73,6 +76,7 @@ func validateBlock(stateDB dbm.DB, state State, block *types.Block) error {
}
}
// Validate all evidence.
// TODO: Each check requires loading an old validator set.
// We should cap the amount of evidence per block
// to prevent potential proposer DoS.