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59 lines
2.0 KiB
59 lines
2.0 KiB
package types
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import (
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"errors"
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"fmt"
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"io"
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"time"
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"github.com/tendermint/go-crypto"
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"github.com/tendermint/go-wire"
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)
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var (
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ErrInvalidBlockPartSignature = errors.New("Error invalid block part signature")
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ErrInvalidBlockPartHash = errors.New("Error invalid block part hash")
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)
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// Proposal defines a block proposal for the consensus.
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// It refers to the block only by its PartSetHeader.
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// It must be signed by the correct proposer for the given Height/Round
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// to be considered valid. It may depend on votes from a previous round,
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// a so-called Proof-of-Lock (POL) round, as noted in the POLRound and POLBlockID.
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type Proposal struct {
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Height int64 `json:"height"`
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Round int `json:"round"`
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Timestamp time.Time `json:"timestamp"`
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BlockPartsHeader PartSetHeader `json:"block_parts_header"`
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POLRound int `json:"pol_round"` // -1 if null.
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POLBlockID BlockID `json:"pol_block_id"` // zero if null.
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Signature crypto.Signature `json:"signature"`
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}
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// NewProposal returns a new Proposal.
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// If there is no POLRound, polRound should be -1.
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func NewProposal(height int64, round int, blockPartsHeader PartSetHeader, polRound int, polBlockID BlockID) *Proposal {
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return &Proposal{
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Height: height,
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Round: round,
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Timestamp: time.Now().UTC(),
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BlockPartsHeader: blockPartsHeader,
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POLRound: polRound,
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POLBlockID: polBlockID,
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}
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}
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// String returns a string representation of the Proposal.
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func (p *Proposal) String() string {
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return fmt.Sprintf("Proposal{%v/%v %v (%v,%v) %v @ %s}",
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p.Height, p.Round, p.BlockPartsHeader, p.POLRound,
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p.POLBlockID, p.Signature, CanonicalTime(p.Timestamp))
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}
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// WriteSignBytes writes the Proposal bytes for signing
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func (p *Proposal) WriteSignBytes(chainID string, w io.Writer, n *int, err *error) {
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wire.WriteJSON(CanonicalJSONOnceProposal{
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ChainID: chainID,
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Proposal: CanonicalProposal(p),
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}, w, n, err)
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}
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