BlockStore holds extended commit

Cherry-pick 8d504d4b50ec6afbdffe2df7ababbef30e15053d and fix conflicts.

Signed-off-by: Thane Thomson <connect@thanethomson.com>

internal/state/execution.go

@@ -7,7 +7,6 @@ import (
 
 	abciclient "github.com/tendermint/tendermint/abci/client"
 	abci "github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/crypto/merkle"
 	"github.com/tendermint/tendermint/internal/eventbus"
@@ -87,9 +86,8 @@ func (blockExec *BlockExecutor) CreateProposalBlock(
 	ctx context.Context,
 	height int64,
 	state State,
-	commit *types.Commit,
+	extCommit *types.ExtendedCommit,
 	proposerAddr []byte,
-	votes []*types.Vote,
 ) (*types.Block, error) {
 
 	maxBytes := state.ConsensusParams.Block.MaxBytes
@@ -101,15 +99,15 @@ func (blockExec *BlockExecutor) CreateProposalBlock(
 	maxDataBytes := types.MaxDataBytes(maxBytes, evSize, state.Validators.Size())
 
 	txs := blockExec.mempool.ReapMaxBytesMaxGas(maxDataBytes, maxGas)
+	commit := extCommit.StripExtensions()
 	block := state.MakeBlock(height, txs, commit, evidence, proposerAddr)
 
-	localLastCommit := buildLastCommitInfo(block, blockExec.store, state.InitialHeight)
 	rpp, err := blockExec.appClient.PrepareProposal(
 		ctx,
 		&abci.RequestPrepareProposal{
 			MaxTxBytes:          maxDataBytes,
 			Txs:                 block.Txs.ToSliceOfBytes(),
-			LocalLastCommit:     extendedCommitInfo(localLastCommit, votes),
+			LocalLastCommit:     extendedCommitInfo(*extCommit),
 			ByzantineValidators: block.Evidence.ToABCI(),
 			Height:              block.Height,
 			Time:                block.Time,
@@ -416,43 +414,29 @@ func buildLastCommitInfo(block *types.Block, store Store, initialHeight int64) a
 	}
 }
 
+//TODO reword
 // extendedCommitInfo expects a CommitInfo struct along with all of the
 // original votes relating to that commit, including their vote extensions. The
 // order of votes does not matter.
-func extendedCommitInfo(c abci.CommitInfo, votes []*types.Vote) abci.ExtendedCommitInfo {
-	if len(c.Votes) != len(votes) {
-		panic(fmt.Sprintf("extendedCommitInfo: number of votes from commit differ from the number of votes supplied (%d != %d)", len(c.Votes), len(votes)))
-	}
-	votesByVal := make(map[string]*types.Vote)
-	for _, vote := range votes {
-		if vote != nil {
-			valAddr := vote.ValidatorAddress.String()
-			if _, ok := votesByVal[valAddr]; ok {
-				panic(fmt.Sprintf("extendedCommitInfo: found duplicate vote for validator with address %s", valAddr))
-			}
-			votesByVal[valAddr] = vote
-		}
-	}
-	vs := make([]abci.ExtendedVoteInfo, len(c.Votes))
-	for i := range vs {
+func extendedCommitInfo(extCommit types.ExtendedCommit) abci.ExtendedCommitInfo {
+	vs := make([]abci.ExtendedVoteInfo, len(extCommit.ExtendedSignatures))
+	for i, ecs := range extCommit.ExtendedSignatures {
 		var ext []byte
-		// votes[i] will be nil if c.Votes[i].SignedLastBlock is false
-		if c.Votes[i].SignedLastBlock {
-			valAddr := crypto.Address(c.Votes[i].Validator.Address).String()
-			vote, ok := votesByVal[valAddr]
-			if !ok || vote == nil {
-				panic(fmt.Sprintf("extendedCommitInfo: validator with address %s signed last block, but could not find vote for it", valAddr))
-			}
-			ext = vote.Extension
+		if ecs.ForBlock() {
+			ext = ecs.VoteExtension
 		}
 		vs[i] = abci.ExtendedVoteInfo{
-			Validator:       c.Votes[i].Validator,
-			SignedLastBlock: c.Votes[i].SignedLastBlock,
+			Validator: abci.Validator{
+				Address: ecs.ValidatorAddress,
+				//TODO: Important: why do we need power here?
+				Power: 0,
+			},
+			SignedLastBlock: ecs.ForBlock(),
 			VoteExtension:   ext,
 		}
 	}
 	return abci.ExtendedCommitInfo{
-		Round: c.Round,
+		Round: extCommit.Round,
 		Votes: vs,
 	}
 }

internal/state/services.go

@@ -26,7 +26,7 @@ type BlockStore interface {
 	LoadBlockMeta(height int64) *types.BlockMeta
 	LoadBlock(height int64) *types.Block
 
-	SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit)
+	SaveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.ExtendedCommit)
 
 	PruneBlocks(height int64) (uint64, error)
 
@@ -36,6 +36,7 @@ type BlockStore interface {
 
 	LoadBlockCommit(height int64) *types.Commit
 	LoadSeenCommit() *types.Commit
+	LoadBlockExtCommit(height int64) *types.ExtendedCommit
 }
 
 //-----------------------------------------------------------------------------