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// Copyright (C) 2014 Nippon Telegraph and Telephone Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"encoding/json"
"fmt"
"github.com/osrg/gobgp/config"
"github.com/osrg/gobgp/packet"
"gopkg.in/tomb.v2"
"net"
)
type Peer struct {
t tomb.Tomb
globalConfig config.GlobalType
peerConfig config.NeighborType
acceptedConnCh chan *net.TCPConn
incoming chan *bgp.BGPMessage
outgoing chan *bgp.BGPMessage
fsm *FSM
sourceVerNum int
}
func NewPeer(g config.GlobalType, peer config.NeighborType) *Peer {
p := &Peer{
globalConfig: g,
peerConfig: peer,
acceptedConnCh: make(chan *net.TCPConn),
incoming: make(chan *bgp.BGPMessage, 4096),
outgoing: make(chan *bgp.BGPMessage, 4096),
sourceVerNum: 1,
}
p.fsm = NewFSM(&g, &peer, p.acceptedConnCh, p.incoming, p.outgoing)
p.t.Go(p.loop)
return p
}
// this goroutine handles routing table operations
func (peer *Peer) loop() error {
for {
h := NewFSMHandler(peer.fsm)
sameState := true
for sameState {
select {
case nextState := <-peer.fsm.StateChanged():
// waits for all goroutines created for the current state
h.Wait()
if peer.fsm.StateChange(nextState) {
peer.sourceVerNum++
}
sameState = false
case <-peer.t.Dying():
close(peer.acceptedConnCh)
h.Stop()
close(peer.incoming)
close(peer.outgoing)
return nil
case m := <-peer.incoming:
if m != nil {
j, _ := json.Marshal(m)
fmt.Println(string(j))
}
}
}
}
}
func (peer *Peer) Stop() error {
peer.t.Kill(nil)
return peer.t.Wait()
}
func (peer *Peer) PassConn(conn *net.TCPConn) {
peer.acceptedConnCh <- conn
}
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