2 ==================================================================================
3 Copyright (c) 2019 AT&T Intellectual Property.
4 Copyright (c) 2019 Nokia
6 Licensed under the Apache License, Version 2.0 (the "License");
7 you may not use this file except in compliance with the License.
8 You may obtain a copy of the License at
10 http://www.apache.org/licenses/LICENSE-2.0
12 Unless required by applicable law or agreed to in writing, software
13 distributed under the License is distributed on an "AS IS" BASIS,
14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 See the License for the specific language governing permissions and
16 limitations under the License.
17 ==================================================================================
21 Abstract: Routing Manager Main file. Implemets the following functions:
22 - parseArgs: reading command line arguments
23 - init:Rtmgr initializing the service modules
24 - serve: running the loop
29 //TODO: change flag to pflag (won't need any argument parse)
34 "routing-manager/pkg/nbi"
35 "routing-manager/pkg/rpe"
36 "routing-manager/pkg/rtmgr"
37 "routing-manager/pkg/sbi"
38 "routing-manager/pkg/sdl"
43 const SERVICENAME = "rtmgr"
44 const INTERVAL time.Duration = 2
47 args map[string]*string
51 // TODO: arguments should be validated (filename; xm-url; sbi-if; rest-url; rest-port)
52 args = make(map[string]*string)
53 args["configfile"] = flag.String("configfile", "/etc/rtmgrcfg.json", "Routing manager's configuration file path")
54 args["nbi"] = flag.String("nbi", "httpRESTful", "Northbound interface module to be used. Valid values are: 'httpGetter | httpRESTful'")
55 args["sbi"] = flag.String("sbi", "nngpush", "Southbound interface module to be used. Valid values are: 'nngpush")
56 args["rpe"] = flag.String("rpe", "rmrpush", "Route Policy Engine to be used. Valid values are: 'rmrpush'")
57 args["sdl"] = flag.String("sdl", "file", "Datastore enginge to be used. Valid values are: 'file'")
58 args["xm-url"] = flag.String("xm-url", "http://localhost:3000/xapps", "HTTP URL where xApp Manager exposes the entire xApp List")
59 args["nbi-if"] = flag.String("nbi-if", "http://localhost:8888", "Base HTTP URL where routing manager will be listening on")
60 args["sbi-if"] = flag.String("sbi-if", "0.0.0.0", "IPv4 address of interface where Southbound socket to be opened")
61 args["filename"] = flag.String("filename", "/db/rt.json", "Absolute path of file where the route information to be stored")
62 args["loglevel"] = flag.String("loglevel", "INFO", "INFO | WARN | ERROR | DEBUG")
66 func initRtmgr() (nbi.NbiEngine, sbi.SbiEngine, sdl.SdlEngine, rpe.RpeEngine, error) {
68 var nbii nbi.NbiEngine
69 var sbii sbi.SbiEngine
70 var sdli sdl.SdlEngine
71 var rpei rpe.RpeEngine
72 if nbii, err = nbi.GetNbi(*args["nbi"]); err == nil && nbii != nil {
73 if sbii, err = sbi.GetSbi(*args["sbi"]); err == nil && sbii != nil {
74 if sdli, err = sdl.GetSdl(*args["sdl"]); err == nil && sdli != nil {
75 if rpei, err = rpe.GetRpe(*args["rpe"]); err == nil && rpei != nil {
76 return nbii, sbii, sdli, rpei, nil
81 return nil, nil, nil, nil, err
84 func serveSBI(triggerSBI <-chan bool, sbiEngine sbi.SbiEngine, sdlEngine sdl.SdlEngine, rpeEngine rpe.RpeEngine) {
87 data, err := sdlEngine.ReadAll(*args["filename"])
88 if err != nil || data == nil {
89 rtmgr.Logger.Error("Cannot get data from sdl interface due to: " + err.Error())
92 sbiEngine.UpdateEndpoints(data)
93 policies := rpeEngine.GeneratePolicies(rtmgr.Eps)
94 err = sbiEngine.DistributeAll(policies)
96 rtmgr.Logger.Error("Routing table cannot be published due to: " + err.Error())
102 func serve(nbiEngine nbi.NbiEngine, sbiEngine sbi.SbiEngine, sdlEngine sdl.SdlEngine, rpeEngine rpe.RpeEngine) {
104 triggerSBI := make(chan bool)
106 nbiErr := nbiEngine.Initialize(*args["xm-url"], *args["nbi-if"], *args["filename"], *args["configfile"],
107 sdlEngine, rpeEngine, triggerSBI)
109 rtmgr.Logger.Error("Failed to initialize nbi due to: " + nbiErr.Error())
113 err := sbiEngine.Initialize(*args["sbi-if"])
115 rtmgr.Logger.Info("Failed to open push socket due to: " + err.Error())
118 defer nbiEngine.Terminate()
119 defer sbiEngine.Terminate()
121 // This SBI Go routine is trtiggered by periodic main loop and when data is recieved on REST interface.
122 go serveSBI(triggerSBI, sbiEngine, sdlEngine, rpeEngine)
125 time.Sleep(INTERVAL * time.Second)
126 if *args["nbi"] == "httpGetter" {
127 data, err := nbiEngine.(*nbi.HttpGetter).FetchAllXapps(*args["xm-url"])
129 rtmgr.Logger.Error("Cannot fetch xapp data due to: " + err.Error())
130 } else if data != nil {
131 sdlEngine.WriteXapps(*args["filename"], data)
139 func SetupCloseHandler() {
140 c := make(chan os.Signal, 2)
141 signal.Notify(c, os.Interrupt, syscall.SIGTERM)
144 rtmgr.Logger.Info("\r- Ctrl+C pressed in Terminal")
151 rtmgr.SetLogLevel(*args["loglevel"])
152 nbiEngine, sbiEngine, sdlEngine, rpeEngine, err := initRtmgr()
154 rtmgr.Logger.Error(err.Error())
158 rtmgr.Logger.Info("Start " + SERVICENAME + " service")
159 rtmgr.Eps = make(rtmgr.Endpoints)
160 serve(nbiEngine, sbiEngine, sdlEngine, rpeEngine)