package types import ( "errors" "fmt" "io" . "github.com/tendermint/go-common" "github.com/tendermint/go-crypto" "github.com/tendermint/go-wire" ) 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. type Vote struct { Height int `json:"height"` Round int `json:"round"` Type byte `json:"type"` BlockHash []byte `json:"block_hash"` // empty if vote is nil. BlockPartsHeader PartSetHeader `json:"block_parts_header"` // zero if vote is nil. Signature crypto.SignatureEd25519 `json:"signature"` } // Types of votes const ( VoteTypePrevote = byte(0x01) VoteTypePrecommit = byte(0x02) ) func (vote *Vote) WriteSignBytes(chainID string, w io.Writer, n *int, err *error) { wire.WriteTo([]byte(Fmt(`{"chain_id":"%s"`, chainID)), w, n, err) wire.WriteTo([]byte(Fmt(`,"vote":{"block_hash":"%X","block_parts_header":%v`, vote.BlockHash, vote.BlockPartsHeader)), w, n, err) wire.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 { if vote == nil { return "nil-Vote" } var typeString string switch vote.Type { case VoteTypePrevote: typeString = "Prevote" case VoteTypePrecommit: typeString = "Precommit" default: PanicSanity("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.BlockPartsHeader, vote.Signature) } //-------------------------------------------------------------------------------- // TODO: Move blocks/Validation to here? // Common interface between *consensus.VoteSet and types.Validation type VoteSetReader interface { Height() int Round() int Type() byte Size() int BitArray() *BitArray GetByIndex(int) *Vote IsCommit() bool }