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75 lines
1.9 KiB
75 lines
1.9 KiB
package block
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import (
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"errors"
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"fmt"
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"io"
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"github.com/tendermint/tendermint/account"
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"github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/common"
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)
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var (
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ErrVoteUnexpectedStep = errors.New("Unexpected step")
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ErrVoteInvalidAccount = errors.New("Invalid round vote account")
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ErrVoteInvalidSignature = errors.New("Invalid round vote signature")
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ErrVoteInvalidBlockHash = errors.New("Invalid block hash")
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)
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type ErrVoteConflictingSignature struct {
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VoteA *Vote
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VoteB *Vote
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}
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func (err *ErrVoteConflictingSignature) Error() string {
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return "Conflicting round vote signature"
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}
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// Represents a prevote, precommit, or commit vote from validators for consensus.
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// Commit votes get aggregated into the next block's Validaiton.
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// See the whitepaper for details.
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type Vote struct {
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Height uint
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Round uint
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Type byte
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BlockHash []byte // empty if vote is nil.
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BlockParts PartSetHeader // zero if vote is nil.
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Signature account.SignatureEd25519
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}
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// Types of votes
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const (
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VoteTypePrevote = byte(0x00)
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VoteTypePrecommit = byte(0x01)
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VoteTypeCommit = byte(0x02)
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)
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func (vote *Vote) WriteSignBytes(w io.Writer, n *int64, err *error) {
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binary.WriteUvarint(vote.Height, w, n, err)
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binary.WriteUvarint(vote.Round, w, n, err)
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binary.WriteByte(vote.Type, w, n, err)
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binary.WriteByteSlice(vote.BlockHash, w, n, err)
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binary.WriteBinary(vote.BlockParts, w, n, err)
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}
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func (vote *Vote) Copy() *Vote {
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voteCopy := *vote
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return &voteCopy
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}
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func (vote *Vote) String() string {
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var typeString string
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switch vote.Type {
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case VoteTypePrevote:
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typeString = "Prevote"
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case VoteTypePrecommit:
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typeString = "Precommit"
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case VoteTypeCommit:
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typeString = "Commit"
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default:
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panic("Unknown vote type")
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}
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return fmt.Sprintf("%v{%v/%v %X#%v %v}", typeString, vote.Height, vote.Round, Fingerprint(vote.BlockHash), vote.BlockParts, vote.Signature)
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}
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