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peer.go
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peer.go
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package peer
import (
"bytes"
"sync"
"time"
"github.com/fletaio/common/util"
"github.com/fletaio/framework/log"
"github.com/fletaio/framework/message"
"github.com/fletaio/framework/router"
)
//Peer is manages connections between nodes that cause logical connections.
type Peer interface {
router.Conn
Send(m message.Message) error
PingTime() time.Duration
SetPingTime(t time.Duration)
ConnectedTime() int64
IsClose() bool
Remove()
NetAddr() string
}
type onRecv func(p *peer, t message.Type) error
type peer struct {
router.Conn
pingTime time.Duration
score int64
closed bool
registeredTime int64
connectedTime int64
deletePeer func(addr string)
writeLock sync.Mutex
onRecvEventHandler onRecv
}
//NewPeer is the peer creator.
func newPeer(conn router.Conn, pingTime time.Duration, deletePeer func(addr string), OnRecvEventHandler onRecv) *peer {
p := &peer{
Conn: conn,
pingTime: pingTime,
closed: false,
deletePeer: deletePeer,
connectedTime: time.Now().UnixNano(),
onRecvEventHandler: OnRecvEventHandler,
}
return p
}
func (p *peer) ID() string {
return p.NetAddr()
}
func (p *peer) NetAddr() string {
// if addr, ok := p.Conn.RemoteAddr().(*net.TCPAddr); ok { //TCP 로 ip를 바로 획득 가능한경우
// return addr.IP.String()
// }
// //:으로 나눈 마지막을 port로 취급
// addrs := strings.Split(p.Conn.ID(), ":")
// addr := strings.Join(addrs[:len(addrs)-1], ":")
// return addr
return p.Conn.ID()
}
func (p *peer) ConnectedTime() int64 {
return p.connectedTime
}
func (p *peer) Start() {
p.readPacket()
}
func (p *peer) readPacket() {
defer func() {
p.Close()
}()
for !p.closed {
t, n, err := util.ReadUint64(p)
if n != 0 && message.NameOfType(message.Type(t)) == "" {
log.Error("not defind message type recived", t)
return
}
if err != nil {
// if err != io.EOF {
// log.Error("recv read type error : ", err)
// }
return
}
if n != 8 {
log.Error("recv read type error : invalied packet length")
return
}
err = p.onRecvEventHandler(p, message.Type(t))
if err != nil {
log.Error("onRecv error : ", err)
return
}
}
}
//Send conveys a message to the connected node.
func (p *peer) Send(m message.Message) error {
p.writeLock.Lock()
defer p.writeLock.Unlock()
bf := bytes.Buffer{}
_, err := util.WriteUint64(&bf, uint64(m.Type()))
if err != nil {
return err
}
_, err = m.WriteTo(&bf)
if err != nil {
return err
}
_, err = p.Write(bf.Bytes())
if err != nil {
return err
}
return nil
}
//PingTime return pingTime
func (p *peer) PingTime() time.Duration {
return p.pingTime
}
//SetPingTime set pingTime
func (p *peer) SetPingTime(t time.Duration) {
p.pingTime = t
}
//SetRegisteredTime set registeredTime
func (p *peer) SetRegisteredTime(t int64) {
p.registeredTime = t
}
//IsClose returns closed
func (p *peer) IsClose() bool {
return p.closed
}
//Remove is Close connection when removed peer
func (p *peer) Remove() {
p.Conn.Close()
}
//Close is used to break logical connections and delete stored peer data.
func (p *peer) Close() error {
p.closed = true
p.deletePeer(p.NetAddr())
p.Conn.Close()
return nil
}