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package main
import (
"bytes"
"fmt"
"github.com/BurntSushi/toml"
"github.com/jessevdk/go-flags"
"github.com/osrg/gobgp/config"
"io/ioutil"
"log"
"net"
"os"
"path/filepath"
)
type QuaggaConfig struct {
id int
config *config.Neighbor
gobgpConfig *config.Global
serverIP net.IP
}
func NewQuaggaConfig(id int, gConfig *config.Global, myConfig *config.Neighbor, server net.IP) *QuaggaConfig {
return &QuaggaConfig{
id: id,
config: myConfig,
gobgpConfig: gConfig,
serverIP: server,
}
}
func (qt *QuaggaConfig) Config() *bytes.Buffer {
buf := bytes.NewBuffer(nil)
buf.WriteString("hostname bgpd\n")
buf.WriteString("password zebra\n")
buf.WriteString(fmt.Sprintf("router bgp %d\n", qt.config.Config.PeerAs))
buf.WriteString(fmt.Sprintf("bgp router-id 192.168.0.%d\n", qt.id))
buf.WriteString(fmt.Sprintf("network 192.168.%d.0/24\n", qt.id))
buf.WriteString(fmt.Sprintf("neighbor %s remote-as %d\n", qt.serverIP, qt.gobgpConfig.Config.As))
buf.WriteString(fmt.Sprintf("neighbor %s password %s\n", qt.serverIP, qt.config.Config.AuthPassword))
buf.WriteString("log file /var/log/quagga/bgpd.log")
return buf
}
func create_config_files(nr int, outputDir string) {
quaggaConfigList := make([]*QuaggaConfig, 0)
gobgpConf := config.Bgp{}
gobgpConf.Global.Config.As = 65000
gobgpConf.Global.Config.RouterId = "192.168.255.1"
for i := 1; i < nr+1; i++ {
c := config.Neighbor{}
c.Config.PeerAs = 65000 + uint32(i)
c.Config.NeighborAddress = fmt.Sprintf("10.0.0.%d", i)
c.Config.AuthPassword = fmt.Sprintf("hoge%d", i)
gobgpConf.Neighbors = append(gobgpConf.Neighbors, c)
q := NewQuaggaConfig(i, &gobgpConf.Global, &c, net.ParseIP("10.0.255.1"))
quaggaConfigList = append(quaggaConfigList, q)
os.Mkdir(fmt.Sprintf("%s/q%d", outputDir, i), 0755)
err := ioutil.WriteFile(fmt.Sprintf("%s/q%d/bgpd.conf", outputDir, i), q.Config().Bytes(), 0644)
if err != nil {
log.Fatal(err)
}
}
var buffer bytes.Buffer
encoder := toml.NewEncoder(&buffer)
encoder.Encode(gobgpConf)
err := ioutil.WriteFile(fmt.Sprintf("%s/gobgpd.conf", outputDir), buffer.Bytes(), 0644)
if err != nil {
log.Fatal(err)
}
}
func main() {
var opts struct {
ClientNumber int `short:"n" long:"client-number" description:"specfying the number of clients" default:"8"`
OutputDir string `short:"c" long:"output" description:"specifing the output directory"`
}
parser := flags.NewParser(&opts, flags.Default)
_, err := parser.Parse()
if err != nil {
os.Exit(1)
}
if opts.OutputDir == "" {
opts.OutputDir, _ = filepath.Abs(".")
} else {
if _, err := os.Stat(opts.OutputDir); os.IsNotExist(err) {
os.Mkdir(opts.OutputDir, 0755)
}
}
create_config_files(opts.ClientNumber, opts.OutputDir)
}
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