Exemplo n.º 1
0
// Decides on the next proposal and sets them onto cs.Proposal*
func (cs *ConsensusState) decideProposal(height int, round int) {
	var block *types.Block
	var blockParts *types.PartSet

	// Decide on block
	if cs.LockedBlock != nil {
		// If we're locked onto a block, just choose that.
		block, blockParts = cs.LockedBlock, cs.LockedBlockParts
	} else {
		// Create a new proposal block from state/txs from the mempool.
		block, blockParts = cs.createProposalBlock()
	}

	// Make proposal
	proposal := NewProposal(height, round, blockParts.Header(), cs.Votes.POLRound())
	err := cs.privValidator.SignProposal(cs.state.ChainID, proposal)
	if err == nil {
		log.Info("Signed and set proposal", "height", height, "round", round, "proposal", proposal)
		log.Debug(Fmt("Signed and set proposal block: %v", block))
		// Set fields
		cs.Proposal = proposal
		cs.ProposalBlock = block
		cs.ProposalBlockParts = blockParts
	} else {
		log.Warn("EnterPropose: Error signing proposal", "height", height, "round", round, "error", err)
	}

}
Exemplo n.º 2
0
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
	}
}