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685 lines
18 KiB
685 lines
18 KiB
package consensus
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import (
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"errors"
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"fmt"
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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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tmjson "github.com/tendermint/tendermint/libs/json"
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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/tendermint/consensus"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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"github.com/tendermint/tendermint/types"
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)
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// Message defines an interface that the consensus domain types implement. When
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// a proto message is received on a consensus p2p Channel, it is wrapped and then
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// converted to a Message via MsgFromProto.
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type Message interface {
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ValidateBasic() error
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}
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func init() {
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tmjson.RegisterType(&NewRoundStepMessage{}, "tendermint/NewRoundStepMessage")
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tmjson.RegisterType(&NewValidBlockMessage{}, "tendermint/NewValidBlockMessage")
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tmjson.RegisterType(&ProposalMessage{}, "tendermint/Proposal")
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tmjson.RegisterType(&ProposalPOLMessage{}, "tendermint/ProposalPOL")
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tmjson.RegisterType(&BlockPartMessage{}, "tendermint/BlockPart")
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tmjson.RegisterType(&VoteMessage{}, "tendermint/Vote")
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tmjson.RegisterType(&HasVoteMessage{}, "tendermint/HasVote")
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tmjson.RegisterType(&VoteSetMaj23Message{}, "tendermint/VoteSetMaj23")
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tmjson.RegisterType(&VoteSetBitsMessage{}, "tendermint/VoteSetBits")
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}
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// NewRoundStepMessage is sent for every step taken in the ConsensusState.
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// For every height/round/step transition
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type NewRoundStepMessage struct {
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Height int64
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Round int32
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Step cstypes.RoundStepType
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SecondsSinceStartTime int64
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LastCommitRound int32
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}
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// ValidateBasic performs basic validation.
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func (m *NewRoundStepMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.Round < 0 {
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return errors.New("negative Round")
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}
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if !m.Step.IsValid() {
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return errors.New("invalid Step")
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}
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// NOTE: SecondsSinceStartTime may be negative
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// LastCommitRound will be -1 for the initial height, but we don't know what height this is
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// since it can be specified in genesis. The reactor will have to validate this via
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// ValidateHeight().
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if m.LastCommitRound < -1 {
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return errors.New("invalid LastCommitRound (cannot be < -1)")
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}
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return nil
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}
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// ValidateHeight validates the height given the chain's initial height.
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func (m *NewRoundStepMessage) ValidateHeight(initialHeight int64) error {
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if m.Height < initialHeight {
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return fmt.Errorf("invalid Height %v (lower than initial height %v)",
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m.Height, initialHeight)
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}
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if m.Height == initialHeight && m.LastCommitRound != -1 {
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return fmt.Errorf("invalid LastCommitRound %v (must be -1 for initial height %v)",
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m.LastCommitRound, initialHeight)
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}
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if m.Height > initialHeight && m.LastCommitRound < 0 {
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return fmt.Errorf("LastCommitRound can only be negative for initial height %v", // nolint
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initialHeight)
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}
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return nil
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}
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// String returns a string representation.
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func (m *NewRoundStepMessage) String() string {
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return fmt.Sprintf("[NewRoundStep H:%v R:%v S:%v LCR:%v]",
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m.Height, m.Round, m.Step, m.LastCommitRound)
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}
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// NewValidBlockMessage is sent when a validator observes a valid block B in some round r,
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// i.e., there is a Proposal for block B and 2/3+ prevotes for the block B in the round r.
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// In case the block is also committed, then IsCommit flag is set to true.
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type NewValidBlockMessage struct {
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Height int64
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Round int32
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BlockPartSetHeader types.PartSetHeader
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BlockParts *bits.BitArray
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IsCommit bool
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}
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// ValidateBasic performs basic validation.
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func (m *NewValidBlockMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.Round < 0 {
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return errors.New("negative Round")
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}
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if err := m.BlockPartSetHeader.ValidateBasic(); err != nil {
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return fmt.Errorf("wrong BlockPartSetHeader: %v", err)
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}
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if m.BlockParts.Size() == 0 {
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return errors.New("empty blockParts")
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}
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if m.BlockParts.Size() != int(m.BlockPartSetHeader.Total) {
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return fmt.Errorf("blockParts bit array size %d not equal to BlockPartSetHeader.Total %d",
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m.BlockParts.Size(),
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m.BlockPartSetHeader.Total)
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}
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if m.BlockParts.Size() > int(types.MaxBlockPartsCount) {
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return fmt.Errorf("blockParts bit array is too big: %d, max: %d", m.BlockParts.Size(), types.MaxBlockPartsCount)
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}
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return nil
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}
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// String returns a string representation.
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func (m *NewValidBlockMessage) String() string {
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return fmt.Sprintf("[ValidBlockMessage H:%v R:%v BP:%v BA:%v IsCommit:%v]",
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m.Height, m.Round, m.BlockPartSetHeader, m.BlockParts, m.IsCommit)
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}
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// ProposalMessage is sent when a new block is proposed.
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type ProposalMessage struct {
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Proposal *types.Proposal
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}
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// ValidateBasic performs basic validation.
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func (m *ProposalMessage) ValidateBasic() error {
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return m.Proposal.ValidateBasic()
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}
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// String returns a string representation.
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func (m *ProposalMessage) String() string {
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return fmt.Sprintf("[Proposal %v]", m.Proposal)
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}
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// ProposalPOLMessage is sent when a previous proposal is re-proposed.
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type ProposalPOLMessage struct {
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Height int64
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ProposalPOLRound int32
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ProposalPOL *bits.BitArray
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}
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// ValidateBasic performs basic validation.
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func (m *ProposalPOLMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.ProposalPOLRound < 0 {
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return errors.New("negative ProposalPOLRound")
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}
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if m.ProposalPOL.Size() == 0 {
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return errors.New("empty ProposalPOL bit array")
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}
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if m.ProposalPOL.Size() > types.MaxVotesCount {
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return fmt.Errorf("proposalPOL bit array is too big: %d, max: %d", m.ProposalPOL.Size(), types.MaxVotesCount)
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}
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return nil
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}
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// String returns a string representation.
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func (m *ProposalPOLMessage) String() string {
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return fmt.Sprintf("[ProposalPOL H:%v POLR:%v POL:%v]", m.Height, m.ProposalPOLRound, m.ProposalPOL)
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}
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// BlockPartMessage is sent when gossipping a piece of the proposed block.
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type BlockPartMessage struct {
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Height int64
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Round int32
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Part *types.Part
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}
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// ValidateBasic performs basic validation.
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func (m *BlockPartMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.Round < 0 {
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return errors.New("negative Round")
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}
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if err := m.Part.ValidateBasic(); err != nil {
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return fmt.Errorf("wrong Part: %v", err)
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}
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return nil
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}
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// String returns a string representation.
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func (m *BlockPartMessage) String() string {
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return fmt.Sprintf("[BlockPart H:%v R:%v P:%v]", m.Height, m.Round, m.Part)
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}
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// VoteMessage is sent when voting for a proposal (or lack thereof).
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type VoteMessage struct {
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Vote *types.Vote
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}
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// ValidateBasic performs basic validation.
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func (m *VoteMessage) ValidateBasic() error {
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return m.Vote.ValidateBasic()
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}
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// String returns a string representation.
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func (m *VoteMessage) String() string {
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return fmt.Sprintf("[Vote %v]", m.Vote)
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}
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// HasVoteMessage is sent to indicate that a particular vote has been received.
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type HasVoteMessage struct {
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Height int64
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Round int32
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Type tmproto.SignedMsgType
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Index int32
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}
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// ValidateBasic performs basic validation.
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func (m *HasVoteMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.Round < 0 {
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return errors.New("negative Round")
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}
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if !types.IsVoteTypeValid(m.Type) {
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return errors.New("invalid Type")
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}
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if m.Index < 0 {
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return errors.New("negative Index")
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}
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return nil
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}
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// String returns a string representation.
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func (m *HasVoteMessage) String() string {
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return fmt.Sprintf("[HasVote VI:%v V:{%v/%02d/%v}]", m.Index, m.Height, m.Round, m.Type)
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}
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// VoteSetMaj23Message is sent to indicate that a given BlockID has seen +2/3 votes.
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type VoteSetMaj23Message struct {
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Height int64
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Round int32
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Type tmproto.SignedMsgType
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BlockID types.BlockID
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}
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// ValidateBasic performs basic validation.
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func (m *VoteSetMaj23Message) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if m.Round < 0 {
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return errors.New("negative Round")
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}
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if !types.IsVoteTypeValid(m.Type) {
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return errors.New("invalid Type")
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}
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if err := m.BlockID.ValidateBasic(); err != nil {
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return fmt.Errorf("wrong BlockID: %v", err)
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}
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return nil
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}
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// String returns a string representation.
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func (m *VoteSetMaj23Message) String() string {
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return fmt.Sprintf("[VSM23 %v/%02d/%v %v]", m.Height, m.Round, m.Type, m.BlockID)
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}
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// VoteSetBitsMessage is sent to communicate the bit-array of votes seen for the
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// BlockID.
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type VoteSetBitsMessage struct {
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Height int64
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Round int32
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Type tmproto.SignedMsgType
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BlockID types.BlockID
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Votes *bits.BitArray
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}
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// ValidateBasic performs basic validation.
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func (m *VoteSetBitsMessage) ValidateBasic() error {
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if m.Height < 0 {
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return errors.New("negative Height")
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}
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if !types.IsVoteTypeValid(m.Type) {
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return errors.New("invalid Type")
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}
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if err := m.BlockID.ValidateBasic(); err != nil {
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return fmt.Errorf("wrong BlockID: %v", err)
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}
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// NOTE: Votes.Size() can be zero if the node does not have any
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if m.Votes.Size() > types.MaxVotesCount {
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return fmt.Errorf("votes bit array is too big: %d, max: %d", m.Votes.Size(), types.MaxVotesCount)
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}
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return nil
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}
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// String returns a string representation.
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func (m *VoteSetBitsMessage) String() string {
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return fmt.Sprintf("[VSB %v/%02d/%v %v %v]", m.Height, m.Round, m.Type, m.BlockID, m.Votes)
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}
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// MsgToProto takes a consensus message type and returns the proto defined
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// consensus message.
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//
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// TODO: This needs to be removed, but WALToProto depends on this.
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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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pbPartSetHeader := msg.BlockPartSetHeader.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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BlockPartSetHeader: pbPartSetHeader,
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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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pbPartSetHeader, err := types.PartSetHeaderFromProto(&msg.NewValidBlock.BlockPartSetHeader)
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if err != nil {
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return nil, fmt.Errorf("parts header to proto error: %w", err)
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}
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pbBits := new(bits.BitArray)
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err = pbBits.FromProto(msg.NewValidBlock.BlockParts)
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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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pb = &NewValidBlockMessage{
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Height: msg.NewValidBlock.Height,
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Round: msg.NewValidBlock.Round,
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BlockPartSetHeader: *pbPartSetHeader,
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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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err := pbBits.FromProto(&msg.ProposalPol.ProposalPol)
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if err != nil {
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return nil, fmt.Errorf("proposal PoL to proto error: %w", err)
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}
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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,
|
|
Round: msg.BlockPart.Round,
|
|
Part: parts,
|
|
}
|
|
case *tmcons.Message_Vote:
|
|
vote, err := types.VoteFromProto(msg.Vote.Vote)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("vote msg to proto error: %w", err)
|
|
}
|
|
|
|
pb = &VoteMessage{
|
|
Vote: vote,
|
|
}
|
|
case *tmcons.Message_HasVote:
|
|
pb = &HasVoteMessage{
|
|
Height: msg.HasVote.Height,
|
|
Round: msg.HasVote.Round,
|
|
Type: msg.HasVote.Type,
|
|
Index: msg.HasVote.Index,
|
|
}
|
|
case *tmcons.Message_VoteSetMaj23:
|
|
bi, err := types.BlockIDFromProto(&msg.VoteSetMaj23.BlockID)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("voteSetMaj23 msg to proto error: %w", err)
|
|
}
|
|
pb = &VoteSetMaj23Message{
|
|
Height: msg.VoteSetMaj23.Height,
|
|
Round: msg.VoteSetMaj23.Round,
|
|
Type: msg.VoteSetMaj23.Type,
|
|
BlockID: *bi,
|
|
}
|
|
case *tmcons.Message_VoteSetBits:
|
|
bi, err := types.BlockIDFromProto(&msg.VoteSetBits.BlockID)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("block ID to proto error: %w", err)
|
|
}
|
|
bits := new(bits.BitArray)
|
|
err = bits.FromProto(&msg.VoteSetBits.Votes)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("votes to proto error: %w", err)
|
|
}
|
|
|
|
pb = &VoteSetBitsMessage{
|
|
Height: msg.VoteSetBits.Height,
|
|
Round: msg.VoteSetBits.Round,
|
|
Type: msg.VoteSetBits.Type,
|
|
BlockID: *bi,
|
|
Votes: bits,
|
|
}
|
|
default:
|
|
return nil, fmt.Errorf("consensus: message not recognized: %T", msg)
|
|
}
|
|
|
|
if err := pb.ValidateBasic(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return pb, nil
|
|
}
|
|
|
|
// WALToProto takes a WAL message and return a proto walMessage and error.
|
|
func WALToProto(msg WALMessage) (*tmcons.WALMessage, error) {
|
|
var pb tmcons.WALMessage
|
|
|
|
switch msg := msg.(type) {
|
|
case types.EventDataRoundState:
|
|
pb = tmcons.WALMessage{
|
|
Sum: &tmcons.WALMessage_EventDataRoundState{
|
|
EventDataRoundState: &tmproto.EventDataRoundState{
|
|
Height: msg.Height,
|
|
Round: msg.Round,
|
|
Step: msg.Step,
|
|
},
|
|
},
|
|
}
|
|
case msgInfo:
|
|
consMsg, err := MsgToProto(msg.Msg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
pb = tmcons.WALMessage{
|
|
Sum: &tmcons.WALMessage_MsgInfo{
|
|
MsgInfo: &tmcons.MsgInfo{
|
|
Msg: *consMsg,
|
|
PeerID: string(msg.PeerID),
|
|
},
|
|
},
|
|
}
|
|
|
|
case timeoutInfo:
|
|
pb = tmcons.WALMessage{
|
|
Sum: &tmcons.WALMessage_TimeoutInfo{
|
|
TimeoutInfo: &tmcons.TimeoutInfo{
|
|
Duration: msg.Duration,
|
|
Height: msg.Height,
|
|
Round: msg.Round,
|
|
Step: uint32(msg.Step),
|
|
},
|
|
},
|
|
}
|
|
|
|
case EndHeightMessage:
|
|
pb = tmcons.WALMessage{
|
|
Sum: &tmcons.WALMessage_EndHeight{
|
|
EndHeight: &tmcons.EndHeight{
|
|
Height: msg.Height,
|
|
},
|
|
},
|
|
}
|
|
|
|
default:
|
|
return nil, fmt.Errorf("to proto: wal message not recognized: %T", msg)
|
|
}
|
|
|
|
return &pb, nil
|
|
}
|
|
|
|
// WALFromProto takes a proto wal message and return a consensus walMessage and
|
|
// error.
|
|
func WALFromProto(msg *tmcons.WALMessage) (WALMessage, error) {
|
|
if msg == nil {
|
|
return nil, errors.New("nil WAL message")
|
|
}
|
|
|
|
var pb WALMessage
|
|
|
|
switch msg := msg.Sum.(type) {
|
|
case *tmcons.WALMessage_EventDataRoundState:
|
|
pb = types.EventDataRoundState{
|
|
Height: msg.EventDataRoundState.Height,
|
|
Round: msg.EventDataRoundState.Round,
|
|
Step: msg.EventDataRoundState.Step,
|
|
}
|
|
|
|
case *tmcons.WALMessage_MsgInfo:
|
|
walMsg, err := MsgFromProto(&msg.MsgInfo.Msg)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("msgInfo from proto error: %w", err)
|
|
}
|
|
pb = msgInfo{
|
|
Msg: walMsg,
|
|
PeerID: p2p.NodeID(msg.MsgInfo.PeerID),
|
|
}
|
|
|
|
case *tmcons.WALMessage_TimeoutInfo:
|
|
tis, err := tmmath.SafeConvertUint8(int64(msg.TimeoutInfo.Step))
|
|
// deny message based on possible overflow
|
|
if err != nil {
|
|
return nil, fmt.Errorf("denying message due to possible overflow: %w", err)
|
|
}
|
|
|
|
pb = timeoutInfo{
|
|
Duration: msg.TimeoutInfo.Duration,
|
|
Height: msg.TimeoutInfo.Height,
|
|
Round: msg.TimeoutInfo.Round,
|
|
Step: cstypes.RoundStepType(tis),
|
|
}
|
|
|
|
return pb, nil
|
|
|
|
case *tmcons.WALMessage_EndHeight:
|
|
pb := EndHeightMessage{
|
|
Height: msg.EndHeight.Height,
|
|
}
|
|
|
|
return pb, nil
|
|
|
|
default:
|
|
return nil, fmt.Errorf("from proto: wal message not recognized: %T", msg)
|
|
}
|
|
|
|
return pb, nil
|
|
}
|