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// Copyright (c) 2019 Cisco and/or its affiliates.
//
// 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 (
"context"
"encoding/gob"
"flag"
"io"
"log"
"git.fd.io/govpp.git/adapter/socketclient"
"git.fd.io/govpp.git/adapter/statsclient"
"git.fd.io/govpp.git/api"
_ "git.fd.io/govpp.git/core"
"git.fd.io/govpp.git/examples/binapi/interfaces"
"git.fd.io/govpp.git/examples/binapi/vpe"
"git.fd.io/govpp.git/proxy"
)
var (
binapiSocket = flag.String("binapi-socket", socketclient.DefaultSocketName, "Path to VPP binapi socket")
statsSocket = flag.String("stats-socket", statsclient.DefaultSocketName, "Path to VPP stats socket")
proxyAddr = flag.String("addr", ":7878", "Address on which proxy serves RPC.")
)
func init() {
for _, msg := range api.GetRegisteredMessages() {
gob.Register(msg)
}
}
func main() {
flag.Parse()
switch cmd := flag.Arg(0); cmd {
case "server":
runServer()
case "client":
runClient()
default:
log.Printf("invalid command: %q, (available commands: client, server)", cmd)
}
}
func runClient() {
// connect to proxy server
client, err := proxy.Connect(*proxyAddr)
if err != nil {
log.Fatalln("connecting to proxy failed:", err)
}
// proxy stats
statsProvider, err := client.NewStatsClient()
if err != nil {
log.Fatalln(err)
}
var sysStats api.SystemStats
if err := statsProvider.GetSystemStats(&sysStats); err != nil {
log.Fatalln("getting stats failed:", err)
}
log.Printf("SystemStats: %+v", sysStats)
var ifaceStats api.InterfaceStats
if err := statsProvider.GetInterfaceStats(&ifaceStats); err != nil {
log.Fatalln("getting stats failed:", err)
}
log.Printf("InterfaceStats: %+v", ifaceStats)
// proxy binapi
binapiChannel, err := client.NewBinapiClient()
if err != nil {
log.Fatalln(err)
}
log.Println("checking compatibility")
var msgs []api.Message
msgs = append(msgs, interfaces.AllMessages()...)
msgs = append(msgs, vpe.AllMessages()...)
if err := binapiChannel.CheckCompatiblity(msgs...); err != nil {
panic(err)
}
// - using binapi message directly
req := &vpe.CliInband{Cmd: "show version"}
reply := new(vpe.CliInbandReply)
if err := binapiChannel.SendRequest(req).ReceiveReply(reply); err != nil {
log.Fatalln("binapi request failed:", err)
}
log.Printf("VPP version: %+v", reply.Reply)
// - or using generated rpc service
svc := interfaces.NewServiceClient(binapiChannel)
stream, err := svc.DumpSwInterface(context.Background(), &interfaces.SwInterfaceDump{})
if err != nil {
log.Fatalln("binapi request failed:", err)
}
for {
iface, err := stream.Recv()
if err == io.EOF {
break
}
if err != nil {
log.Fatalln(err)
}
log.Printf("- interface: %+v", iface)
}
}
func runServer() {
p, err := proxy.NewServer()
if err != nil {
log.Fatalln(err)
}
statsAdapter := statsclient.NewStatsClient(*statsSocket)
binapiAdapter := socketclient.NewVppClient(*binapiSocket)
if err := p.ConnectStats(statsAdapter); err != nil {
log.Fatalln("connecting to stats failed:", err)
}
defer p.DisconnectStats()
if err := p.ConnectBinapi(binapiAdapter); err != nil {
log.Fatalln("connecting to binapi failed:", err)
}
defer p.DisconnectBinapi()
if err := p.ListenAndServe(*proxyAddr); err != nil {
log.Fatalln(err)
}
}
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