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377 lines
9.6 KiB
377 lines
9.6 KiB
package consensus
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import (
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"errors"
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"fmt"
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"github.com/gogo/protobuf/proto"
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cstypes "github.com/tendermint/tendermint/consensus/types"
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"github.com/tendermint/tendermint/libs/bits"
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tmmath "github.com/tendermint/tendermint/libs/math"
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"github.com/tendermint/tendermint/p2p"
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tmcons "github.com/tendermint/tendermint/proto/consensus"
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tmproto "github.com/tendermint/tendermint/proto/types"
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"github.com/tendermint/tendermint/types"
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)
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// MsgToProto takes a consensus message type and returns the proto defined consensus message
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func MsgToProto(msg Message) (*tmcons.Message, error) {
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if msg == nil {
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return nil, errors.New("consensus: message is nil")
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}
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var pb tmcons.Message
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switch msg := msg.(type) {
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case *NewRoundStepMessage:
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pb = tmcons.Message{
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Sum: &tmcons.Message_NewRoundStep{
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NewRoundStep: &tmcons.NewRoundStep{
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Height: msg.Height,
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Round: msg.Round,
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Step: uint32(msg.Step),
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SecondsSinceStartTime: msg.SecondsSinceStartTime,
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LastCommitRound: msg.LastCommitRound,
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},
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},
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}
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case *NewValidBlockMessage:
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pbPartsHeader := msg.BlockPartsHeader.ToProto()
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pbBits := msg.BlockParts.ToProto()
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pb = tmcons.Message{
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Sum: &tmcons.Message_NewValidBlock{
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NewValidBlock: &tmcons.NewValidBlock{
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Height: msg.Height,
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Round: msg.Round,
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BlockPartsHeader: pbPartsHeader,
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BlockParts: pbBits,
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IsCommit: msg.IsCommit,
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},
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},
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}
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case *ProposalMessage:
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pbP := msg.Proposal.ToProto()
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pb = tmcons.Message{
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Sum: &tmcons.Message_Proposal{
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Proposal: &tmcons.Proposal{
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Proposal: *pbP,
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},
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},
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}
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case *ProposalPOLMessage:
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pbBits := msg.ProposalPOL.ToProto()
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pb = tmcons.Message{
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Sum: &tmcons.Message_ProposalPol{
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ProposalPol: &tmcons.ProposalPOL{
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Height: msg.Height,
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ProposalPolRound: msg.ProposalPOLRound,
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ProposalPol: *pbBits,
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},
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},
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}
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case *BlockPartMessage:
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parts, err := msg.Part.ToProto()
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if err != nil {
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return nil, fmt.Errorf("msg to proto error: %w", err)
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}
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pb = tmcons.Message{
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Sum: &tmcons.Message_BlockPart{
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BlockPart: &tmcons.BlockPart{
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Height: msg.Height,
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Round: msg.Round,
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Part: *parts,
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},
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},
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}
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case *VoteMessage:
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vote := msg.Vote.ToProto()
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pb = tmcons.Message{
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Sum: &tmcons.Message_Vote{
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Vote: &tmcons.Vote{
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Vote: vote,
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},
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},
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}
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case *HasVoteMessage:
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pb = tmcons.Message{
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Sum: &tmcons.Message_HasVote{
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HasVote: &tmcons.HasVote{
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Height: msg.Height,
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Round: msg.Round,
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Type: msg.Type,
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Index: msg.Index,
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},
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},
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}
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case *VoteSetMaj23Message:
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bi := msg.BlockID.ToProto()
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pb = tmcons.Message{
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Sum: &tmcons.Message_VoteSetMaj23{
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VoteSetMaj23: &tmcons.VoteSetMaj23{
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Height: msg.Height,
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Round: msg.Round,
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Type: msg.Type,
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BlockID: bi,
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},
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},
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}
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case *VoteSetBitsMessage:
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bi := msg.BlockID.ToProto()
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bits := msg.Votes.ToProto()
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vsb := &tmcons.Message_VoteSetBits{
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VoteSetBits: &tmcons.VoteSetBits{
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Height: msg.Height,
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Round: msg.Round,
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Type: msg.Type,
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BlockID: bi,
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},
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}
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if bits != nil {
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vsb.VoteSetBits.Votes = *bits
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}
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pb = tmcons.Message{
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Sum: vsb,
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}
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default:
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return nil, fmt.Errorf("consensus: message not recognized: %T", msg)
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}
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return &pb, nil
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}
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// MsgFromProto takes a consensus proto message and returns the native go type
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func MsgFromProto(msg *tmcons.Message) (Message, error) {
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if msg == nil {
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return nil, errors.New("consensus: nil message")
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}
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var pb Message
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switch msg := msg.Sum.(type) {
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case *tmcons.Message_NewRoundStep:
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rs, err := tmmath.SafeConvertUint8(int64(msg.NewRoundStep.Step))
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// deny message based on possible overflow
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if err != nil {
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return nil, fmt.Errorf("denying message due to possible overflow: %w", err)
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}
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pb = &NewRoundStepMessage{
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Height: msg.NewRoundStep.Height,
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Round: msg.NewRoundStep.Round,
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Step: cstypes.RoundStepType(rs),
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SecondsSinceStartTime: msg.NewRoundStep.SecondsSinceStartTime,
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LastCommitRound: msg.NewRoundStep.LastCommitRound,
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}
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case *tmcons.Message_NewValidBlock:
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pbPartsHeader, err := types.PartSetHeaderFromProto(&msg.NewValidBlock.BlockPartsHeader)
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if err != nil {
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return nil, fmt.Errorf("parts to proto error: %w", err)
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}
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pbBits := new(bits.BitArray)
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pbBits.FromProto(msg.NewValidBlock.BlockParts)
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pb = &NewValidBlockMessage{
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Height: msg.NewValidBlock.Height,
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Round: msg.NewValidBlock.Round,
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BlockPartsHeader: *pbPartsHeader,
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BlockParts: pbBits,
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IsCommit: msg.NewValidBlock.IsCommit,
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}
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case *tmcons.Message_Proposal:
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pbP, err := types.ProposalFromProto(&msg.Proposal.Proposal)
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if err != nil {
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return nil, fmt.Errorf("proposal msg to proto error: %w", err)
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}
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pb = &ProposalMessage{
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Proposal: pbP,
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}
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case *tmcons.Message_ProposalPol:
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pbBits := new(bits.BitArray)
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pbBits.FromProto(&msg.ProposalPol.ProposalPol)
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pb = &ProposalPOLMessage{
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Height: msg.ProposalPol.Height,
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ProposalPOLRound: msg.ProposalPol.ProposalPolRound,
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ProposalPOL: pbBits,
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}
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case *tmcons.Message_BlockPart:
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parts, err := types.PartFromProto(&msg.BlockPart.Part)
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if err != nil {
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return nil, fmt.Errorf("blockpart msg to proto error: %w", err)
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}
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pb = &BlockPartMessage{
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Height: msg.BlockPart.Height,
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Round: msg.BlockPart.Round,
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Part: parts,
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}
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case *tmcons.Message_Vote:
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vote, err := types.VoteFromProto(msg.Vote.Vote)
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if err != nil {
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return nil, fmt.Errorf("vote msg to proto error: %w", err)
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}
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pb = &VoteMessage{
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Vote: vote,
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}
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case *tmcons.Message_HasVote:
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pb = &HasVoteMessage{
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Height: msg.HasVote.Height,
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Round: msg.HasVote.Round,
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Type: msg.HasVote.Type,
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Index: msg.HasVote.Index,
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}
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case *tmcons.Message_VoteSetMaj23:
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bi, err := types.BlockIDFromProto(&msg.VoteSetMaj23.BlockID)
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if err != nil {
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return nil, fmt.Errorf("voteSetMaj23 msg to proto error: %w", err)
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}
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pb = &VoteSetMaj23Message{
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Height: msg.VoteSetMaj23.Height,
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Round: msg.VoteSetMaj23.Round,
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Type: msg.VoteSetMaj23.Type,
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BlockID: *bi,
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}
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case *tmcons.Message_VoteSetBits:
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bi, err := types.BlockIDFromProto(&msg.VoteSetBits.BlockID)
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if err != nil {
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return nil, fmt.Errorf("voteSetBits msg to proto error: %w", err)
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}
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bits := new(bits.BitArray)
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bits.FromProto(&msg.VoteSetBits.Votes)
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pb = &VoteSetBitsMessage{
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Height: msg.VoteSetBits.Height,
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Round: msg.VoteSetBits.Round,
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Type: msg.VoteSetBits.Type,
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BlockID: *bi,
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Votes: bits,
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}
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default:
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return nil, fmt.Errorf("consensus: message not recognized: %T", msg)
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}
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if err := pb.ValidateBasic(); err != nil {
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return nil, err
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}
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return pb, nil
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}
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// MustEncode takes the reactors msg, makes it proto and marshals it
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// this mimics `MustMarshalBinaryBare` in that is panics on error
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func MustEncode(msg Message) []byte {
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pb, err := MsgToProto(msg)
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if err != nil {
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panic(err)
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}
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enc, err := proto.Marshal(pb)
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if err != nil {
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panic(err)
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}
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return enc
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}
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// WALToProto takes a WAL message and return a proto walMessage and error
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func WALToProto(msg WALMessage) (*tmcons.WALMessage, error) {
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var pb tmcons.WALMessage
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switch msg := msg.(type) {
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case types.EventDataRoundState:
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pb = tmcons.WALMessage{
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Sum: &tmcons.WALMessage_EventDataRoundState{
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EventDataRoundState: &tmproto.EventDataRoundState{
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Height: msg.Height,
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Round: msg.Round,
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Step: msg.Step,
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},
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},
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}
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case msgInfo:
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consMsg, err := MsgToProto(msg.Msg)
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if err != nil {
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return nil, err
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}
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pb = tmcons.WALMessage{
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Sum: &tmcons.WALMessage_MsgInfo{
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MsgInfo: &tmcons.MsgInfo{
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Msg: *consMsg,
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PeerID: string(msg.PeerID),
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},
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},
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}
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case timeoutInfo:
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pb = tmcons.WALMessage{
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Sum: &tmcons.WALMessage_TimeoutInfo{
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TimeoutInfo: &tmcons.TimeoutInfo{
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Duration: msg.Duration,
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Height: msg.Height,
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Round: msg.Round,
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Step: uint32(msg.Step),
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},
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},
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}
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case EndHeightMessage:
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pb = tmcons.WALMessage{
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Sum: &tmcons.WALMessage_EndHeight{
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EndHeight: &tmcons.EndHeight{
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Height: msg.Height,
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},
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},
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}
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default:
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return nil, fmt.Errorf("to proto: wal message not recognized: %T", msg)
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}
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return &pb, nil
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}
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// WALFromProto takes a proto wal message and return a consensus walMessage and error
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func WALFromProto(msg *tmcons.WALMessage) (WALMessage, error) {
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if msg == nil {
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return nil, errors.New("nil WAL message")
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}
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var pb WALMessage
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switch msg := msg.Sum.(type) {
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case *tmcons.WALMessage_EventDataRoundState:
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pb = types.EventDataRoundState{
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Height: msg.EventDataRoundState.Height,
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Round: msg.EventDataRoundState.Round,
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Step: msg.EventDataRoundState.Step,
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}
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case *tmcons.WALMessage_MsgInfo:
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walMsg, err := MsgFromProto(&msg.MsgInfo.Msg)
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if err != nil {
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return nil, fmt.Errorf("msgInfo from proto error: %w", err)
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}
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pb = msgInfo{
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Msg: walMsg,
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PeerID: p2p.ID(msg.MsgInfo.PeerID),
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}
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case *tmcons.WALMessage_TimeoutInfo:
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tis, err := tmmath.SafeConvertUint8(int64(msg.TimeoutInfo.Step))
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// deny message based on possible overflow
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if err != nil {
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return nil, fmt.Errorf("denying message due to possible overflow: %w", err)
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}
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pb = timeoutInfo{
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Duration: msg.TimeoutInfo.Duration,
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Height: msg.TimeoutInfo.Height,
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Round: msg.TimeoutInfo.Round,
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Step: cstypes.RoundStepType(tis),
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}
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return pb, nil
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case *tmcons.WALMessage_EndHeight:
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pb := EndHeightMessage{
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Height: msg.EndHeight.Height,
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}
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return pb, nil
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default:
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return nil, fmt.Errorf("from proto: wal message not recognized: %T", msg)
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}
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return pb, nil
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}
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