package types import ( "errors" "fmt" "io" "github.com/tendermint/tendermint/account" "github.com/tendermint/tendermint/binary" . "github.com/tendermint/tendermint/common" "github.com/tendermint/tendermint/config" ) var ( ErrVoteUnexpectedStep = errors.New("Unexpected step") ErrVoteInvalidAccount = errors.New("Invalid round vote account") ErrVoteInvalidSignature = errors.New("Invalid round vote signature") ErrVoteInvalidBlockHash = errors.New("Invalid block hash") ) type ErrVoteConflictingSignature struct { VoteA *Vote VoteB *Vote } func (err *ErrVoteConflictingSignature) Error() string { return "Conflicting round vote signature" } // Represents a prevote, precommit, or commit vote from validators for consensus. // Commit votes get aggregated into the next block's Validaiton. // See the whitepaper for details. type Vote struct { Height uint `json:"height"` Round uint `json:"round"` Type byte `json:"type"` BlockHash []byte `json:"block_hash"` // empty if vote is nil. BlockParts PartSetHeader `json:"block_parts"` // zero if vote is nil. Signature account.SignatureEd25519 `json:"signature"` } // Types of votes const ( VoteTypePrevote = byte(0x01) VoteTypePrecommit = byte(0x02) VoteTypeCommit = byte(0x03) ) func (vote *Vote) WriteSignBytes(w io.Writer, n *int64, err *error) { // We hex encode the network name so we don't deal with escaping issues. binary.WriteTo([]byte(Fmt(`{"network":"%X"`, config.App().GetString("network"))), w, n, err) binary.WriteTo([]byte(Fmt(`,"vote":{"block_hash":"%X","block_parts":%v`, vote.BlockHash, vote.BlockParts)), w, n, err) binary.WriteTo([]byte(Fmt(`,"height":%v,"round":%v,"type":%v}}`, vote.Height, vote.Round, vote.Type)), w, n, err) } func (vote *Vote) Copy() *Vote { voteCopy := *vote return &voteCopy } func (vote *Vote) String() string { var typeString string switch vote.Type { case VoteTypePrevote: typeString = "Prevote" case VoteTypePrecommit: typeString = "Precommit" case VoteTypeCommit: typeString = "Commit" default: panic("Unknown vote type") } return fmt.Sprintf("Vote{%v/%02d/%v(%v) %X#%v %v}", vote.Height, vote.Round, vote.Type, typeString, Fingerprint(vote.BlockHash), vote.BlockParts, vote.Signature) }