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145 lines
3.2 KiB
145 lines
3.2 KiB
package v2
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import (
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"errors"
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bc "github.com/tendermint/tendermint/blockchain"
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"github.com/tendermint/tendermint/p2p"
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bcproto "github.com/tendermint/tendermint/proto/tendermint/blockchain"
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"github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/types"
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)
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var (
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errPeerQueueFull = errors.New("peer queue full")
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errNoPeer = errors.New("peer not found")
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)
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type iIO interface {
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sendBlockRequest(peerID p2p.ID, height int64) error
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sendBlockToPeer(block *types.Block, peerID p2p.ID) error
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sendBlockNotFound(height int64, peerID p2p.ID) error
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sendStatusResponse(base, height int64, peerID p2p.ID) error
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broadcastStatusRequest() error
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trySwitchToConsensus(state state.State, skipWAL bool) bool
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}
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type switchIO struct {
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sw *p2p.Switch
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}
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func newSwitchIo(sw *p2p.Switch) *switchIO {
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return &switchIO{
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sw: sw,
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}
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}
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const (
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// BlockchainChannel is a channel for blocks and status updates (`BlockStore` height)
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BlockchainChannel = byte(0x40)
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)
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type consensusReactor interface {
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// for when we switch from blockchain reactor and fast sync to
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// the consensus machine
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SwitchToConsensus(state state.State, skipWAL bool)
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}
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func (sio *switchIO) sendBlockRequest(peerID p2p.ID, height int64) error {
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peer := sio.sw.Peers().Get(peerID)
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if peer == nil {
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return errNoPeer
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}
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msgBytes, err := bc.EncodeMsg(&bcproto.BlockRequest{Height: height})
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if err != nil {
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return err
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}
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queued := peer.TrySend(BlockchainChannel, msgBytes)
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if !queued {
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return errPeerQueueFull
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}
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return nil
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}
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func (sio *switchIO) sendStatusResponse(base int64, height int64, peerID p2p.ID) error {
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peer := sio.sw.Peers().Get(peerID)
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if peer == nil {
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return errNoPeer
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}
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msgBytes, err := bc.EncodeMsg(&bcproto.StatusResponse{Height: height, Base: base})
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if err != nil {
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return err
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}
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if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
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return errPeerQueueFull
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}
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return nil
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}
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func (sio *switchIO) sendBlockToPeer(block *types.Block, peerID p2p.ID) error {
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peer := sio.sw.Peers().Get(peerID)
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if peer == nil {
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return errNoPeer
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}
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if block == nil {
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panic("trying to send nil block")
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}
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bpb, err := block.ToProto()
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if err != nil {
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return err
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}
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msgBytes, err := bc.EncodeMsg(&bcproto.BlockResponse{Block: bpb})
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if err != nil {
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return err
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}
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if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
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return errPeerQueueFull
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}
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return nil
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}
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func (sio *switchIO) sendBlockNotFound(height int64, peerID p2p.ID) error {
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peer := sio.sw.Peers().Get(peerID)
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if peer == nil {
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return errNoPeer
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}
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msgBytes, err := bc.EncodeMsg(&bcproto.NoBlockResponse{Height: height})
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if err != nil {
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return err
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}
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if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
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return errPeerQueueFull
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}
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return nil
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}
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func (sio *switchIO) trySwitchToConsensus(state state.State, skipWAL bool) bool {
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conR, ok := sio.sw.Reactor("CONSENSUS").(consensusReactor)
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if ok {
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conR.SwitchToConsensus(state, skipWAL)
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}
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return ok
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}
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func (sio *switchIO) broadcastStatusRequest() error {
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msgBytes, err := bc.EncodeMsg(&bcproto.StatusRequest{})
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if err != nil {
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return err
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}
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// XXX: maybe we should use an io specific peer list here
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sio.sw.Broadcast(BlockchainChannel, msgBytes)
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return nil
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}
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