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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 main
import (
"fmt"
"github.com/jessevdk/go-flags"
"github.com/osrg/gobgp/config"
"github.com/osrg/gobgp/packet"
"github.com/osrg/gobgp/server"
"os"
"os/signal"
"runtime"
"syscall"
)
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGHUP)
var opts struct {
ConfigFile string `short:"f" long:"config-file" description:"specifying a config file"`
}
_, err := flags.Parse(&opts)
if err != nil {
os.Exit(1)
}
if opts.ConfigFile == "" {
opts.ConfigFile = "gobgpd.conf"
}
configCh := make(chan config.BgpType)
reloadCh := make(chan bool)
go config.ReadConfigfileServe(opts.ConfigFile, configCh, reloadCh)
reloadCh <- true
bgpServer := server.NewBgpServer(bgp.BGP_PORT)
go bgpServer.Serve()
var bgpConfig *config.BgpType = nil
for {
select {
case newConfig := <-configCh:
var added []config.NeighborType
var deleted []config.NeighborType
if bgpConfig == nil {
bgpServer.SetGlobalType(newConfig.Global)
bgpConfig = &newConfig
added = newConfig.NeighborList
deleted = []config.NeighborType{}
} else {
_, added, deleted = config.UpdateConfig(bgpConfig, &newConfig)
}
for _, p := range added {
bgpServer.PeerAdd(p)
}
for _, p := range deleted {
bgpServer.PeerDelete(p)
}
case sig := <-sigCh:
switch sig {
case syscall.SIGHUP:
fmt.Println("relaod the config file")
reloadCh <- true
}
}
}
}
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