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137 lines
2.9 KiB
137 lines
2.9 KiB
package p2p
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import (
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"fmt"
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"io"
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"net"
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"sync/atomic"
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"github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/common"
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"github.com/tendermint/tendermint/types"
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)
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type Peer struct {
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outbound bool
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mconn *MConnection
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running uint32
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*types.NodeInfo
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Key string
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Data *CMap // User data.
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}
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// NOTE: blocking
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// Before creating a peer with newPeer(), perform a handshake on connection.
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func peerHandshake(conn net.Conn, ourNodeInfo *types.NodeInfo) (*types.NodeInfo, error) {
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var peerNodeInfo = new(types.NodeInfo)
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var err1 error
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var err2 error
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Parallel(
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func() {
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var n int64
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binary.WriteBinary(ourNodeInfo, conn, &n, &err1)
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},
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func() {
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var n int64
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binary.ReadBinary(peerNodeInfo, conn, &n, &err2)
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log.Info("Peer handshake", "peerNodeInfo", peerNodeInfo)
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})
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if err1 != nil {
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return nil, err1
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}
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if err2 != nil {
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return nil, err2
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}
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return peerNodeInfo, nil
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}
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// NOTE: call peerHandshake on conn before calling newPeer().
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func newPeer(conn net.Conn, peerNodeInfo *types.NodeInfo, outbound bool, reactorsByCh map[byte]Reactor, chDescs []*ChannelDescriptor, onPeerError func(*Peer, interface{})) *Peer {
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var p *Peer
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onReceive := func(chId byte, msgBytes []byte) {
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reactor := reactorsByCh[chId]
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if reactor == nil {
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panic(Fmt("Unknown channel %X", chId))
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}
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reactor.Receive(chId, p, msgBytes)
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}
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onError := func(r interface{}) {
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p.stop()
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onPeerError(p, r)
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}
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mconn := NewMConnection(conn, chDescs, onReceive, onError)
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p = &Peer{
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outbound: outbound,
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mconn: mconn,
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running: 0,
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NodeInfo: peerNodeInfo,
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Key: peerNodeInfo.PubKey.KeyString(),
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Data: NewCMap(),
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}
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return p
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}
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func (p *Peer) start() {
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if atomic.CompareAndSwapUint32(&p.running, 0, 1) {
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log.Debug("Starting Peer", "peer", p)
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p.mconn.Start()
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}
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}
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func (p *Peer) stop() {
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if atomic.CompareAndSwapUint32(&p.running, 1, 0) {
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log.Debug("Stopping Peer", "peer", p)
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p.mconn.Stop()
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}
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}
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func (p *Peer) IsRunning() bool {
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return atomic.LoadUint32(&p.running) == 1
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}
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func (p *Peer) Connection() *MConnection {
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return p.mconn
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}
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func (p *Peer) IsOutbound() bool {
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return p.outbound
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}
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func (p *Peer) Send(chId byte, msg interface{}) bool {
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if atomic.LoadUint32(&p.running) == 0 {
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return false
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}
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return p.mconn.Send(chId, msg)
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}
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func (p *Peer) TrySend(chId byte, msg interface{}) bool {
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if atomic.LoadUint32(&p.running) == 0 {
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return false
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}
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return p.mconn.TrySend(chId, msg)
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}
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func (p *Peer) CanSend(chId byte) bool {
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if atomic.LoadUint32(&p.running) == 0 {
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return false
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}
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return p.mconn.CanSend(chId)
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}
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func (p *Peer) WriteTo(w io.Writer) (n int64, err error) {
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binary.WriteString(p.Key, w, &n, &err)
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return
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}
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func (p *Peer) String() string {
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if p.outbound {
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return fmt.Sprintf("Peer{->%v}", p.mconn)
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} else {
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return fmt.Sprintf("Peer{%v->}", p.mconn)
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}
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}
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func (p *Peer) Equals(other *Peer) bool {
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return p.Key == other.Key
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}
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