follow Standard Go Project Layout

https://github.com/golang-standards/project-layout

Now you can see clearly what are private and public library code.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

3 files changed, 577 insertions, 0 deletions

diff --git a/cmd/gobgpd/main.go b/cmd/gobgpd/main.go
new file mode 100644
index 00000000..6f1a364d
--- /dev/null
+++ b/cmd/gobgpd/main.go
@@ -0,0 +1,450 @@
+//
+// Copyright (C) 2014-2017 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"
+	"io/ioutil"
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+	"os/signal"
+	"runtime"
+	"syscall"
+
+	"github.com/golang/protobuf/ptypes/any"
+	"github.com/jessevdk/go-flags"
+	"github.com/kr/pretty"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+
+	api "github.com/osrg/gobgp/api"
+	"github.com/osrg/gobgp/internal/pkg/config"
+	"github.com/osrg/gobgp/internal/pkg/table"
+	"github.com/osrg/gobgp/pkg/packet/bgp"
+	"github.com/osrg/gobgp/pkg/server"
+)
+
+var version = "master"
+
+func marshalRouteTargets(l []string) ([]*any.Any, error) {
+	rtList := make([]*any.Any, 0, len(l))
+	for _, rtString := range l {
+		rt, err := bgp.ParseRouteTarget(rtString)
+		if err != nil {
+			return nil, err
+		}
+		rtList = append(rtList, api.MarshalRT(rt))
+	}
+	return rtList, nil
+}
+
+func main() {
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, syscall.SIGTERM)
+
+	var opts struct {
+		ConfigFile      string `short:"f" long:"config-file" description:"specifying a config file"`
+		ConfigType      string `short:"t" long:"config-type" description:"specifying config type (toml, yaml, json)" default:"toml"`
+		LogLevel        string `short:"l" long:"log-level" description:"specifying log level"`
+		LogPlain        bool   `short:"p" long:"log-plain" description:"use plain format for logging (json by default)"`
+		UseSyslog       string `short:"s" long:"syslog" description:"use syslogd"`
+		Facility        string `long:"syslog-facility" description:"specify syslog facility"`
+		DisableStdlog   bool   `long:"disable-stdlog" description:"disable standard logging"`
+		CPUs            int    `long:"cpus" description:"specify the number of CPUs to be used"`
+		GrpcHosts       string `long:"api-hosts" description:"specify the hosts that gobgpd listens on" default:":50051"`
+		GracefulRestart bool   `short:"r" long:"graceful-restart" description:"flag restart-state in graceful-restart capability"`
+		Dry             bool   `short:"d" long:"dry-run" description:"check configuration"`
+		PProfHost       string `long:"pprof-host" description:"specify the host that gobgpd listens on for pprof" default:"localhost:6060"`
+		PProfDisable    bool   `long:"pprof-disable" description:"disable pprof profiling"`
+		TLS             bool   `long:"tls" description:"enable TLS authentication for gRPC API"`
+		TLSCertFile     string `long:"tls-cert-file" description:"The TLS cert file"`
+		TLSKeyFile      string `long:"tls-key-file" description:"The TLS key file"`
+		Version         bool   `long:"version" description:"show version number"`
+	}
+	_, err := flags.Parse(&opts)
+	if err != nil {
+		os.Exit(1)
+	}
+
+	if opts.Version {
+		fmt.Println("gobgpd version", version)
+		os.Exit(0)
+	}
+
+	if opts.CPUs == 0 {
+		runtime.GOMAXPROCS(runtime.NumCPU())
+	} else {
+		if runtime.NumCPU() < opts.CPUs {
+			log.Errorf("Only %d CPUs are available but %d is specified", runtime.NumCPU(), opts.CPUs)
+			os.Exit(1)
+		}
+		runtime.GOMAXPROCS(opts.CPUs)
+	}
+
+	if !opts.PProfDisable {
+		go func() {
+			log.Println(http.ListenAndServe(opts.PProfHost, nil))
+		}()
+	}
+
+	switch opts.LogLevel {
+	case "debug":
+		log.SetLevel(log.DebugLevel)
+	case "info":
+		log.SetLevel(log.InfoLevel)
+	default:
+		log.SetLevel(log.InfoLevel)
+	}
+
+	if opts.DisableStdlog {
+		log.SetOutput(ioutil.Discard)
+	} else {
+		log.SetOutput(os.Stdout)
+	}
+
+	if opts.UseSyslog != "" {
+		if err := addSyslogHook(opts.UseSyslog, opts.Facility); err != nil {
+			log.Error("Unable to connect to syslog daemon, ", opts.UseSyslog)
+		}
+	}
+
+	if opts.LogPlain {
+		if opts.DisableStdlog {
+			log.SetFormatter(&log.TextFormatter{
+				DisableColors: true,
+			})
+		}
+	} else {
+		log.SetFormatter(&log.JSONFormatter{})
+	}
+
+	configCh := make(chan *config.BgpConfigSet)
+	if opts.Dry {
+		go config.ReadConfigfileServe(opts.ConfigFile, opts.ConfigType, configCh)
+		c := <-configCh
+		if opts.LogLevel == "debug" {
+			pretty.Println(c)
+		}
+		os.Exit(0)
+	}
+
+	log.Info("gobgpd started")
+	bgpServer := server.NewBgpServer()
+	go bgpServer.Serve()
+
+	var grpcOpts []grpc.ServerOption
+	if opts.TLS {
+		creds, err := credentials.NewServerTLSFromFile(opts.TLSCertFile, opts.TLSKeyFile)
+		if err != nil {
+			log.Fatalf("Failed to generate credentials: %v", err)
+		}
+		grpcOpts = []grpc.ServerOption{grpc.Creds(creds)}
+	}
+	// start grpc Server
+	apiServer := server.NewServer(bgpServer, grpc.NewServer(grpcOpts...), opts.GrpcHosts)
+	go func() {
+		if err := apiServer.Serve(); err != nil {
+			log.Fatalf("failed to listen grpc port: %s", err)
+		}
+	}()
+
+	if opts.ConfigFile != "" {
+		go config.ReadConfigfileServe(opts.ConfigFile, opts.ConfigType, configCh)
+	}
+
+	loop := func() {
+		var c *config.BgpConfigSet
+		for {
+			select {
+			case <-sigCh:
+				apiServer.Shutdown(context.Background(), &api.ShutdownRequest{})
+				return
+			case newConfig := <-configCh:
+				var added, deleted, updated []config.Neighbor
+				var addedPg, deletedPg, updatedPg []config.PeerGroup
+				var updatePolicy bool
+
+				if c == nil {
+					c = newConfig
+					if _, err := apiServer.StartServer(context.Background(), &api.StartServerRequest{
+						Global: server.NewGlobalFromConfigStruct(&c.Global),
+					}); err != nil {
+						log.Fatalf("failed to set global config: %s", err)
+					}
+
+					if newConfig.Zebra.Config.Enabled {
+						tps := c.Zebra.Config.RedistributeRouteTypeList
+						l := make([]string, 0, len(tps))
+						for _, t := range tps {
+							l = append(l, string(t))
+						}
+						if _, err := apiServer.EnableZebra(context.Background(), &api.EnableZebraRequest{
+							Url:                  c.Zebra.Config.Url,
+							RouteTypes:           l,
+							Version:              uint32(c.Zebra.Config.Version),
+							NexthopTriggerEnable: c.Zebra.Config.NexthopTriggerEnable,
+							NexthopTriggerDelay:  uint32(c.Zebra.Config.NexthopTriggerDelay),
+						}); err != nil {
+							log.Fatalf("failed to set zebra config: %s", err)
+						}
+					}
+
+					if len(newConfig.Collector.Config.Url) > 0 {
+						if _, err := apiServer.AddCollector(context.Background(), &api.AddCollectorRequest{
+							Url:               c.Collector.Config.Url,
+							DbName:            c.Collector.Config.DbName,
+							TableDumpInterval: c.Collector.Config.TableDumpInterval,
+						}); err != nil {
+							log.Fatalf("failed to set collector config: %s", err)
+						}
+					}
+
+					for _, c := range newConfig.RpkiServers {
+						if _, err := apiServer.AddRpki(context.Background(), &api.AddRpkiRequest{
+							Address:  c.Config.Address,
+							Port:     c.Config.Port,
+							Lifetime: c.Config.RecordLifetime,
+						}); err != nil {
+							log.Fatalf("failed to set rpki config: %s", err)
+						}
+					}
+					for _, c := range newConfig.BmpServers {
+						if _, err := apiServer.AddBmp(context.Background(), &api.AddBmpRequest{
+							Address: c.Config.Address,
+							Port:    c.Config.Port,
+							Type:    api.AddBmpRequest_MonitoringPolicy(c.Config.RouteMonitoringPolicy.ToInt()),
+						}); err != nil {
+							log.Fatalf("failed to set bmp config: %s", err)
+						}
+					}
+					for _, vrf := range newConfig.Vrfs {
+						rd, err := bgp.ParseRouteDistinguisher(vrf.Config.Rd)
+						if err != nil {
+							log.Fatalf("failed to load vrf rd config: %s", err)
+						}
+
+						importRtList, err := marshalRouteTargets(vrf.Config.ImportRtList)
+						if err != nil {
+							log.Fatalf("failed to load vrf import rt config: %s", err)
+						}
+						exportRtList, err := marshalRouteTargets(vrf.Config.ExportRtList)
+						if err != nil {
+							log.Fatalf("failed to load vrf export rt config: %s", err)
+						}
+
+						if _, err := apiServer.AddVrf(context.Background(), &api.AddVrfRequest{
+							Vrf: &api.Vrf{
+								Name:     vrf.Config.Name,
+								Rd:       api.MarshalRD(rd),
+								Id:       uint32(vrf.Config.Id),
+								ImportRt: importRtList,
+								ExportRt: exportRtList,
+							},
+						}); err != nil {
+							log.Fatalf("failed to set vrf config: %s", err)
+						}
+					}
+					for _, c := range newConfig.MrtDump {
+						if len(c.Config.FileName) == 0 {
+							continue
+						}
+						if _, err := apiServer.EnableMrt(context.Background(), &api.EnableMrtRequest{
+							DumpType: int32(c.Config.DumpType.ToInt()),
+							Filename: c.Config.FileName,
+							Interval: c.Config.DumpInterval,
+						}); err != nil {
+							log.Fatalf("failed to set mrt config: %s", err)
+						}
+					}
+					p := config.ConfigSetToRoutingPolicy(newConfig)
+					rp, err := server.NewAPIRoutingPolicyFromConfigStruct(p)
+					if err != nil {
+						log.Warn(err)
+					} else {
+						apiServer.UpdatePolicy(context.Background(), &api.UpdatePolicyRequest{
+							Sets:     rp.DefinedSet,
+							Policies: rp.PolicyDefinition,
+						})
+					}
+
+					added = newConfig.Neighbors
+					addedPg = newConfig.PeerGroups
+					if opts.GracefulRestart {
+						for i, n := range added {
+							if n.GracefulRestart.Config.Enabled {
+								added[i].GracefulRestart.State.LocalRestarting = true
+							}
+						}
+					}
+
+				} else {
+					addedPg, deletedPg, updatedPg = config.UpdatePeerGroupConfig(c, newConfig)
+					added, deleted, updated = config.UpdateNeighborConfig(c, newConfig)
+					updatePolicy = config.CheckPolicyDifference(config.ConfigSetToRoutingPolicy(c), config.ConfigSetToRoutingPolicy(newConfig))
+
+					if updatePolicy {
+						log.Info("Policy config is updated")
+						p := config.ConfigSetToRoutingPolicy(newConfig)
+						rp, err := server.NewAPIRoutingPolicyFromConfigStruct(p)
+						if err != nil {
+							log.Warn(err)
+						} else {
+							apiServer.UpdatePolicy(context.Background(), &api.UpdatePolicyRequest{
+								Sets:     rp.DefinedSet,
+								Policies: rp.PolicyDefinition,
+							})
+						}
+					}
+					// global policy update
+					if !newConfig.Global.ApplyPolicy.Config.Equal(&c.Global.ApplyPolicy.Config) {
+						a := newConfig.Global.ApplyPolicy.Config
+						toDefaultTable := func(r config.DefaultPolicyType) table.RouteType {
+							var def table.RouteType
+							switch r {
+							case config.DEFAULT_POLICY_TYPE_ACCEPT_ROUTE:
+								def = table.ROUTE_TYPE_ACCEPT
+							case config.DEFAULT_POLICY_TYPE_REJECT_ROUTE:
+								def = table.ROUTE_TYPE_REJECT
+							}
+							return def
+						}
+						toPolicies := func(r []string) []*table.Policy {
+							p := make([]*table.Policy, 0, len(r))
+							for _, n := range r {
+								p = append(p, &table.Policy{
+									Name: n,
+								})
+							}
+							return p
+						}
+
+						def := toDefaultTable(a.DefaultImportPolicy)
+						ps := toPolicies(a.ImportPolicyList)
+						apiServer.ReplacePolicyAssignment(context.Background(), &api.ReplacePolicyAssignmentRequest{
+							Assignment: server.NewAPIPolicyAssignmentFromTableStruct(&table.PolicyAssignment{
+								Name:     "",
+								Type:     table.POLICY_DIRECTION_IMPORT,
+								Policies: ps,
+								Default:  def,
+							}),
+						})
+
+						def = toDefaultTable(a.DefaultExportPolicy)
+						ps = toPolicies(a.ExportPolicyList)
+						apiServer.ReplacePolicyAssignment(context.Background(), &api.ReplacePolicyAssignmentRequest{
+							Assignment: server.NewAPIPolicyAssignmentFromTableStruct(&table.PolicyAssignment{
+								Name:     "",
+								Type:     table.POLICY_DIRECTION_EXPORT,
+								Policies: ps,
+								Default:  def,
+							}),
+						})
+
+						updatePolicy = true
+
+					}
+					c = newConfig
+				}
+				for _, pg := range addedPg {
+					log.Infof("PeerGroup %s is added", pg.Config.PeerGroupName)
+					if _, err := apiServer.AddPeerGroup(context.Background(), &api.AddPeerGroupRequest{
+						PeerGroup: server.NewPeerGroupFromConfigStruct(&pg),
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, pg := range deletedPg {
+					log.Infof("PeerGroup %s is deleted", pg.Config.PeerGroupName)
+					if _, err := apiServer.DeletePeerGroup(context.Background(), &api.DeletePeerGroupRequest{
+						PeerGroup: server.NewPeerGroupFromConfigStruct(&pg),
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, pg := range updatedPg {
+					log.Infof("PeerGroup %v is updated", pg.State.PeerGroupName)
+					if u, err := apiServer.UpdatePeerGroup(context.Background(), &api.UpdatePeerGroupRequest{
+						PeerGroup: server.NewPeerGroupFromConfigStruct(&pg),
+					}); err != nil {
+						log.Warn(err)
+					} else {
+						updatePolicy = updatePolicy || u.NeedsSoftResetIn
+					}
+				}
+				for _, pg := range updatedPg {
+					log.Infof("PeerGroup %s is updated", pg.Config.PeerGroupName)
+					if _, err := apiServer.UpdatePeerGroup(context.Background(), &api.UpdatePeerGroupRequest{
+						PeerGroup: server.NewPeerGroupFromConfigStruct(&pg),
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, dn := range newConfig.DynamicNeighbors {
+					log.Infof("Dynamic Neighbor %s is added to PeerGroup %s", dn.Config.Prefix, dn.Config.PeerGroup)
+					if _, err := apiServer.AddDynamicNeighbor(context.Background(), &api.AddDynamicNeighborRequest{
+						DynamicNeighbor: &api.DynamicNeighbor{
+							Prefix:    dn.Config.Prefix,
+							PeerGroup: dn.Config.PeerGroup,
+						},
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, p := range added {
+					log.Infof("Peer %v is added", p.State.NeighborAddress)
+					if _, err := apiServer.AddNeighbor(context.Background(), &api.AddNeighborRequest{
+						Peer: server.NewPeerFromConfigStruct(&p),
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, p := range deleted {
+					log.Infof("Peer %v is deleted", p.State.NeighborAddress)
+					if _, err := apiServer.DeleteNeighbor(context.Background(), &api.DeleteNeighborRequest{
+						Peer: server.NewPeerFromConfigStruct(&p),
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+				for _, p := range updated {
+					log.Infof("Peer %v is updated", p.State.NeighborAddress)
+					if u, err := apiServer.UpdateNeighbor(context.Background(), &api.UpdateNeighborRequest{
+						Peer: server.NewPeerFromConfigStruct(&p),
+					}); err != nil {
+						log.Warn(err)
+					} else {
+						updatePolicy = updatePolicy || u.NeedsSoftResetIn
+					}
+				}
+
+				if updatePolicy {
+					if _, err := apiServer.SoftResetNeighbor(context.Background(), &api.SoftResetNeighborRequest{
+						Address:   "",
+						Direction: api.SoftResetNeighborRequest_IN,
+					}); err != nil {
+						log.Warn(err)
+					}
+				}
+			}
+		}
+	}
+
+	loop()
+}
diff --git a/cmd/gobgpd/util.go b/cmd/gobgpd/util.go
new file mode 100644
index 00000000..1b7885b8
--- /dev/null
+++ b/cmd/gobgpd/util.go
@@ -0,0 +1,103 @@
+// Copyright (C) 2017 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.
+
+// +build !windows
+
+package main
+
+import (
+	"log/syslog"
+	"os"
+	"os/signal"
+	"runtime"
+	"runtime/debug"
+	"strings"
+	"syscall"
+
+	log "github.com/sirupsen/logrus"
+	lSyslog "github.com/sirupsen/logrus/hooks/syslog"
+)
+
+func init() {
+	go func() {
+		sigCh := make(chan os.Signal, 1)
+		signal.Notify(sigCh, syscall.SIGUSR1)
+		for range sigCh {
+			runtime.GC()
+			debug.FreeOSMemory()
+		}
+	}()
+}
+
+func addSyslogHook(host, facility string) error {
+	dst := strings.SplitN(host, ":", 2)
+	network := ""
+	addr := ""
+	if len(dst) == 2 {
+		network = dst[0]
+		addr = dst[1]
+	}
+
+	priority := syslog.Priority(0)
+	switch facility {
+	case "kern":
+		priority = syslog.LOG_KERN
+	case "user":
+		priority = syslog.LOG_USER
+	case "mail":
+		priority = syslog.LOG_MAIL
+	case "daemon":
+		priority = syslog.LOG_DAEMON
+	case "auth":
+		priority = syslog.LOG_AUTH
+	case "syslog":
+		priority = syslog.LOG_SYSLOG
+	case "lpr":
+		priority = syslog.LOG_LPR
+	case "news":
+		priority = syslog.LOG_NEWS
+	case "uucp":
+		priority = syslog.LOG_UUCP
+	case "cron":
+		priority = syslog.LOG_CRON
+	case "authpriv":
+		priority = syslog.LOG_AUTHPRIV
+	case "ftp":
+		priority = syslog.LOG_FTP
+	case "local0":
+		priority = syslog.LOG_LOCAL0
+	case "local1":
+		priority = syslog.LOG_LOCAL1
+	case "local2":
+		priority = syslog.LOG_LOCAL2
+	case "local3":
+		priority = syslog.LOG_LOCAL3
+	case "local4":
+		priority = syslog.LOG_LOCAL4
+	case "local5":
+		priority = syslog.LOG_LOCAL5
+	case "local6":
+		priority = syslog.LOG_LOCAL6
+	case "local7":
+		priority = syslog.LOG_LOCAL7
+	}
+
+	hook, err := lSyslog.NewSyslogHook(network, addr, syslog.LOG_INFO|priority, "bgpd")
+	if err != nil {
+		return err
+	}
+	log.AddHook(hook)
+	return nil
+}
diff --git a/cmd/gobgpd/util_windows.go b/cmd/gobgpd/util_windows.go
new file mode 100644
index 00000000..56c5bc2f
--- /dev/null
+++ b/cmd/gobgpd/util_windows.go
@@ -0,0 +1,24 @@
+// Copyright (C) 2017 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 (
+	"errors"
+)
+
+func addSyslogHook(_, _ string) error {
+	return errors.New("syslog is not supported on this OS")
+}