// Save Block, save the +2/3 Commits we've seen,
// and sign a Commit-Vote if we haven't already
func (cs *ConsensusState) saveCommitVoteBlock(block *types.Block, blockParts *types.PartSet, commits *VoteSet) {
// The proposal must be valid.
if err := cs.stageBlock(block, blockParts); err != nil {
// Prevent zombies.
log.Warn("saveCommitVoteBlock() an invalid block", "error", err)
return
}
// Save to blockStore.
if cs.blockStore.Height() < block.Height {
seenValidation := commits.MakeValidation()
cs.blockStore.SaveBlock(block, blockParts, seenValidation)
}
// Save the state.
cs.stagedState.Save()
// Update mempool.
cs.mempoolReactor.Mempool.ResetForBlockAndState(block, cs.stagedState)
// Commit-vote if we haven't already.
if cs.lastCommitVoteHeight < block.Height {
cs.signAddVote(types.VoteTypeCommit, block.Hash(), blockParts.Header())
cs.lastCommitVoteHeight = block.Height
}
}
func (cs *ConsensusState) stageBlock(block *types.Block, blockParts *types.PartSet) error {
if block == nil {
panic("Cannot stage nil block")
}
// Already staged?
blockHash := block.Hash()
if cs.stagedBlock != nil && len(blockHash) != 0 && bytes.Equal(cs.stagedBlock.Hash(), blockHash) {
return nil
}
// Create a copy of the state for staging
stateCopy := cs.state.Copy()
// reset the event cache and pass it into the state
cs.evc = events.NewEventCache(cs.evsw)
stateCopy.SetFireable(cs.evc)
// Commit block onto the copied state.
// NOTE: Basic validation is done in state.AppendBlock().
err := sm.ExecBlock(stateCopy, block, blockParts.Header())
if err != nil {
return err
} else {
cs.stagedBlock = block
cs.stagedState = stateCopy
return nil
}
}
// sign a Commit-Vote
func (cs *ConsensusState) commitVoteBlock(block *types.Block, blockParts *types.PartSet) {
// The proposal must be valid.
if err := cs.stageBlock(block, blockParts); err != nil {
// Prevent zombies.
log.Warn("commitVoteBlock() an invalid block", "error", err)
return
}
// Commit-vote.
if cs.lastCommitVoteHeight < block.Height {
cs.signAddVote(types.VoteTypeCommit, block.Hash(), blockParts.Header())
cs.lastCommitVoteHeight = block.Height
} else {
log.Error("Duplicate commitVoteBlock() attempt", "lastCommitVoteHeight", cs.lastCommitVoteHeight, "types.Height", block.Height)
}
}
