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// Copyright (c) 2017 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.
// service-client is an example VPP management application that exercises the
// govpp API using generated service client.
package main
import (
"bytes"
"context"
"flag"
"fmt"
"io"
"log"
"git.fd.io/govpp.git"
"git.fd.io/govpp.git/adapter/socketclient"
"git.fd.io/govpp.git/api"
"git.fd.io/govpp.git/examples/binapi/interfaces"
"git.fd.io/govpp.git/examples/binapi/vpe"
)
var (
sockAddr = flag.String("sock", socketclient.DefaultSocketName, "Path to VPP binary API socket file")
)
func main() {
flag.Parse()
fmt.Println("Starting RPC service example")
// connect to VPP
conn, err := govpp.Connect(*sockAddr)
if err != nil {
log.Fatalln("ERROR: connecting to VPP failed:", err)
}
defer conn.Disconnect()
// create a channel
ch, err := conn.NewAPIChannel()
if err != nil {
log.Fatalln("ERROR: creating channel failed:", err)
}
defer ch.Close()
showVersion(ch)
interfaceDump(ch)
}
// showVersion shows an example of simple request with services.
func showVersion(ch api.Channel) {
c := vpe.NewServiceClient(ch)
version, err := c.ShowVersion(context.Background(), &vpe.ShowVersion{})
if err != nil {
log.Fatalln("ERROR: ShowVersion failed:", err)
}
fmt.Printf("Version: %v\n", version.Version)
}
// interfaceDump shows an example of multi request with services.
func interfaceDump(ch api.Channel) {
c := interfaces.NewServiceClient(ch)
stream, err := c.DumpSwInterface(context.Background(), &interfaces.SwInterfaceDump{})
if err != nil {
log.Fatalln("ERROR: DumpSwInterface failed:", err)
}
fmt.Println("Dumping interfaces")
for {
iface, err := stream.Recv()
if err == io.EOF {
break
}
if err != nil {
log.Fatalln("ERROR: DumpSwInterface failed:", err)
}
fmt.Printf("- interface: %s\n", bytes.Trim(iface.InterfaceName, "\x00"))
}
}
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