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package main
import (
"code.fbi.h-da.de/cocsn/gosdn/forks/google/gnmi"
"code.fbi.h-da.de/cocsn/gosdn/forks/google/gnmi/modeldata"
oc "code.fbi.h-da.de/cocsn/yang-models/generated/arista"
"context"
"flag"
"fmt"
"github.com/google/gnxi/utils/credentials"
pb "github.com/openconfig/gnmi/proto/gnmi"
"github.com/openconfig/ygot/ygot"
log "github.com/sirupsen/logrus"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/reflection"
"google.golang.org/grpc/status"
"io/ioutil"
"net"
"os"
"reflect"
)
var (
bindAddr = flag.String("bind_address", ":9339", "Bind to address:port or just :port")
configFile = flag.String("config", "", "IETF JSON file for target startup config")
)
type server struct {
*gnmi.Server
}
func callback(newConfig ygot.ValidatedGoStruct) error {
// Apply the config to your device and return nil if success. return error if fails.
//
// Do something ...
return nil
}
func newServer(model *gnmi.Model, config []byte) (*server, error) {
s, err := gnmi.NewServer(model, config, callback)
if err != nil {
return nil, err
}
return &server{Server: s}, nil
}
// Get overrides the Get func of gnmi.Target to provide user auth.
func (s *server) Get(ctx context.Context, req *pb.GetRequest) (*pb.GetResponse, error) {
msg, ok := credentials.AuthorizeUser(ctx)
if !ok {
log.Infof("denied a Get request: %v", msg)
return nil, status.Error(codes.PermissionDenied, msg)
}
log.Infof("allowed a Get request: %v", msg)
return s.Server.Get(ctx, req)
}
// Set overrides the Set func of gnmi.Target to provide user auth.
/*
func (s *server) Set(ctx context.Context, req *pb.SetRequest) (*pb.SetResponse, error) {
msg, ok := credentials.AuthorizeUser(ctx)
if !ok {
log.Infof("denied a Set request: %v", msg)
return nil, status.Error(codes.PermissionDenied, msg)
}
log.Infof("allowed a Set request: %v", msg)
return s.Server.Set(ctx, req)
}
*/
func main() {
// Google stuff from here
model := gnmi.NewModel(modeldata.ModelData,
reflect.TypeOf((*oc.Device)(nil)),
oc.SchemaTree["Device"],
oc.Unmarshal,
oc.ΛEnum)
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Supported models:\n")
for _, m := range model.SupportedModels() {
fmt.Fprintf(os.Stderr, " %s\n", m)
}
fmt.Fprintf(os.Stderr, "\n")
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
flag.PrintDefaults()
}
flag.Set("logtostderr", "true")
flag.Parse()
g := grpc.NewServer()
var configData []byte
if *configFile != "" {
var err error
configData, err = ioutil.ReadFile(*configFile)
if err != nil {
log.Fatalf("error in reading config file: %v", err)
}
}
s, err := newServer(model, configData)
if err != nil {
log.Fatalf("error in creating gnmi target: %v", err)
}
pb.RegisterGNMIServer(g, s)
reflection.Register(g)
log.Infof("starting to listen on %s", *bindAddr)
listen, err := net.Listen("tcp", *bindAddr)
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
log.Info("starting to serve")
if err := g.Serve(listen); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}