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// Copyright (C) 2015 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/osrg/gobgp/api"
"github.com/osrg/gobgp/gomrt/packet"
"github.com/spf13/cobra"
"golang.org/x/net/context"
"google.golang.org/grpc"
"io"
"net"
"os"
"time"
)
var globalOpts struct {
Host string
Port int
Input string
Count int
}
var client api.GrpcClient
func connGrpc() *grpc.ClientConn {
timeout := grpc.WithTimeout(time.Second)
// determine IP address version
host := net.ParseIP(globalOpts.Host)
target := fmt.Sprintf("%s:%d", globalOpts.Host, globalOpts.Port)
if host.To4() == nil {
target = fmt.Sprintf("[%s]:%d", globalOpts.Host, globalOpts.Port)
}
conn, err := grpc.Dial(target, timeout)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
return conn
}
func main() {
rootCmd := &cobra.Command{
Use: "gomrt",
PersistentPreRun: func(cmd *cobra.Command, args []string) {
conn := connGrpc()
client = api.NewGrpcClient(conn)
},
Run: func(cmd *cobra.Command, args []string) {
file, err := os.Open(globalOpts.Input)
if err != nil {
fmt.Println("failed to open file")
os.Exit(1)
}
idx := 0
stream, err := client.ModPath(context.Background())
if err != nil {
fmt.Println("failed to modpath:", err)
os.Exit(1)
}
for {
buf := make([]byte, mrt.COMMON_HEADER_LEN)
_, err := file.Read(buf)
if err == io.EOF {
break
} else if err != nil {
fmt.Println("failed to read:", err)
os.Exit(1)
}
h := &mrt.Header{}
err = h.DecodeFromBytes(buf)
if err != nil {
fmt.Println("failed to parse")
os.Exit(1)
}
buf = make([]byte, h.Len)
_, err = file.Read(buf)
if err != nil {
fmt.Println("failed to read")
os.Exit(1)
}
msg, err := mrt.ParseBody(h, buf)
if err != nil {
fmt.Println("failed to parse:", err)
os.Exit(1)
}
if msg.Header.Type == mrt.TABLE_DUMPv2 {
subType := mrt.SubTypeTableDumpv2(msg.Header.SubType)
var af *api.AddressFamily
switch subType {
case mrt.PEER_INDEX_TABLE:
continue
case mrt.RIB_IPV4_UNICAST:
af = api.AF_IPV4_UC
case mrt.RIB_IPV6_UNICAST:
af = api.AF_IPV6_UC
default:
fmt.Println("unsupported subType:", subType)
os.Exit(1)
}
rib := msg.Body.(*mrt.Rib)
prefix := rib.Prefix.String()
path := &api.Path{}
path.Nlri = &api.Nlri{
Af: af,
Prefix: prefix,
}
arg := &api.ModPathArguments{
Resource: api.Resource_GLOBAL,
Path: path,
}
err = stream.Send(arg)
if err != nil {
fmt.Println("failed to send:", err)
os.Exit(1)
}
res, err := stream.Recv()
if err != nil {
fmt.Println("failed to send:", err)
os.Exit(1)
}
if res.Code != api.Error_SUCCESS {
fmt.Errorf("error: code: %d, msg: %s", res.Code, res.Msg)
os.Exit(1)
}
}
idx += 1
if idx == globalOpts.Count {
break
}
}
},
}
rootCmd.PersistentFlags().StringVarP(&globalOpts.Host, "host", "u", "127.0.0.1", "host")
rootCmd.PersistentFlags().IntVarP(&globalOpts.Port, "port", "p", 8080, "port")
rootCmd.Flags().StringVarP(&globalOpts.Input, "input", "i", "", "input mrt file")
rootCmd.Flags().IntVarP(&globalOpts.Count, "count", "c", -1, "how many mrt record you read")
rootCmd.Execute()
}
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