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package blocks
import (
"errors"
"fmt"
"io"
. "github.com/tendermint/tendermint/binary"
. "github.com/tendermint/tendermint/common"
)
const (
VoteTypePrevote = byte(0x00)
VoteTypePrecommit = byte(0x01)
VoteTypeCommit = byte(0x02)
)
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")
ErrVoteConflictingSignature = errors.New("Conflicting round vote signature")
)
// Represents a prevote, precommit, or commit vote for proposals.
type Vote struct {
Height uint32
Round uint16
Type byte
BlockHash []byte // empty if vote is nil.
BlockParts PartSetHeader // zero if vote is nil.
Signature
}
func ReadVote(r io.Reader, n *int64, err *error) *Vote {
return &Vote{
Height: ReadUInt32(r, n, err),
Round: ReadUInt16(r, n, err),
Type: ReadByte(r, n, err),
BlockHash: ReadByteSlice(r, n, err),
BlockParts: ReadPartSetHeader(r, n, err),
Signature: ReadSignature(r, n, err),
}
}
func (v *Vote) WriteTo(w io.Writer) (n int64, err error) {
WriteUInt32(w, v.Height, &n, &err)
WriteUInt16(w, v.Round, &n, &err)
WriteByte(w, v.Type, &n, &err)
WriteByteSlice(w, v.BlockHash, &n, &err)
WriteBinary(w, v.BlockParts, &n, &err)
WriteBinary(w, v.Signature, &n, &err)
return
}
func (v *Vote) GetSignature() Signature {
return v.Signature
}
func (v *Vote) SetSignature(sig Signature) {
v.Signature = sig
}
func (v *Vote) Copy() *Vote {
vCopy := *v
return &vCopy
}
func (v *Vote) String() string {
var typeString string
switch v.Type {
case VoteTypePrevote:
typeString = "Prevote"
case VoteTypePrecommit:
typeString = "Precommit"
case VoteTypeCommit:
typeString = "Commit"
default:
panic("Unknown vote type")
}
return fmt.Sprintf("%v{%v/%v:%X:%v:%v}", typeString, v.Height, v.Round, Fingerprint(v.BlockHash), v.BlockParts, v.SignerId)
}