You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
153 lines
3.2 KiB
153 lines
3.2 KiB
package mempool
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"sync/atomic"
|
|
|
|
"github.com/tendermint/tendermint/binary"
|
|
"github.com/tendermint/tendermint/events"
|
|
"github.com/tendermint/tendermint/p2p"
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
var (
|
|
MempoolChannel = byte(0x30)
|
|
)
|
|
|
|
// MempoolReactor handles mempool tx broadcasting amongst peers.
|
|
type MempoolReactor struct {
|
|
sw *p2p.Switch
|
|
quit chan struct{}
|
|
started uint32
|
|
stopped uint32
|
|
|
|
Mempool *Mempool
|
|
|
|
evsw *events.EventSwitch
|
|
}
|
|
|
|
func NewMempoolReactor(mempool *Mempool) *MempoolReactor {
|
|
memR := &MempoolReactor{
|
|
quit: make(chan struct{}),
|
|
Mempool: mempool,
|
|
}
|
|
return memR
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (memR *MempoolReactor) Start(sw *p2p.Switch) {
|
|
if atomic.CompareAndSwapUint32(&memR.started, 0, 1) {
|
|
memR.sw = sw
|
|
log.Info("Starting MempoolReactor")
|
|
}
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (memR *MempoolReactor) Stop() {
|
|
if atomic.CompareAndSwapUint32(&memR.stopped, 0, 1) {
|
|
log.Info("Stopping MempoolReactor")
|
|
close(memR.quit)
|
|
}
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (memR *MempoolReactor) GetChannels() []*p2p.ChannelDescriptor {
|
|
return []*p2p.ChannelDescriptor{
|
|
&p2p.ChannelDescriptor{
|
|
Id: MempoolChannel,
|
|
Priority: 5,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (pexR *MempoolReactor) AddPeer(peer *p2p.Peer) {
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (pexR *MempoolReactor) RemovePeer(peer *p2p.Peer, reason interface{}) {
|
|
}
|
|
|
|
// Implements Reactor
|
|
func (memR *MempoolReactor) Receive(chId byte, src *p2p.Peer, msgBytes []byte) {
|
|
_, msg_, err := DecodeMessage(msgBytes)
|
|
if err != nil {
|
|
log.Warn("Error decoding message", "error", err)
|
|
return
|
|
}
|
|
log.Info("MempoolReactor received message", "msg", msg_)
|
|
|
|
switch msg := msg_.(type) {
|
|
case *TxMessage:
|
|
err := memR.Mempool.AddTx(msg.Tx)
|
|
if err != nil {
|
|
// Bad, seen, or conflicting tx.
|
|
log.Debug("Could not add tx", "tx", msg.Tx)
|
|
return
|
|
} else {
|
|
log.Debug("Added valid tx", "tx", msg.Tx)
|
|
}
|
|
// Share tx.
|
|
// We use a simple shotgun approach for now.
|
|
// TODO: improve efficiency
|
|
for _, peer := range memR.sw.Peers().List() {
|
|
if peer.Key == src.Key {
|
|
continue
|
|
}
|
|
peer.TrySend(MempoolChannel, msg)
|
|
}
|
|
|
|
default:
|
|
// Ignore unknown message
|
|
}
|
|
}
|
|
|
|
func (memR *MempoolReactor) BroadcastTx(tx types.Tx) error {
|
|
err := memR.Mempool.AddTx(tx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
msg := &TxMessage{Tx: tx}
|
|
memR.sw.Broadcast(MempoolChannel, msg)
|
|
return nil
|
|
}
|
|
|
|
// implements events.Eventable
|
|
func (memR *MempoolReactor) AddEventSwitch(evsw *events.EventSwitch) {
|
|
memR.evsw = evsw
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Messages
|
|
|
|
const (
|
|
msgTypeUnknown = byte(0x00)
|
|
msgTypeTx = byte(0x10)
|
|
)
|
|
|
|
// TODO: check for unnecessary extra bytes at the end.
|
|
func DecodeMessage(bz []byte) (msgType byte, msg interface{}, err error) {
|
|
n := new(int64)
|
|
msgType = bz[0]
|
|
r := bytes.NewReader(bz)
|
|
switch msgType {
|
|
case msgTypeTx:
|
|
msg = binary.ReadBinary(&TxMessage{}, r, n, &err)
|
|
default:
|
|
msg = nil
|
|
}
|
|
return
|
|
}
|
|
|
|
//-------------------------------------
|
|
|
|
type TxMessage struct {
|
|
Tx types.Tx
|
|
}
|
|
|
|
func (m *TxMessage) TypeByte() byte { return msgTypeTx }
|
|
|
|
func (m *TxMessage) String() string {
|
|
return fmt.Sprintf("[TxMessage %v]", m.Tx)
|
|
}
|