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.
19 This source code is part of the near-RT RIC (RAN Intelligent Controller)
20 platform project (RICP).
23 ==================================================================================
27 Abstract: Routing Manager Main file. Implemets the following functions:
28 - parseArgs: reading command line arguments
29 - init:Rtmgr initializing the service modules
30 - serve: running the loop
35 //TODO: change flag to pflag (won't need any argument parse)
38 "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
41 "routing-manager/pkg/nbi"
42 "routing-manager/pkg/rpe"
43 "routing-manager/pkg/rtmgr"
44 "routing-manager/pkg/sbi"
45 "routing-manager/pkg/sdl"
50 const SERVICENAME = "rtmgr"
51 const INTERVAL time.Duration = 60
53 func initRtmgr() (nbiEngine nbi.Engine, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine, err error) {
54 if nbiEngine, err = nbi.GetNbi(xapp.Config.GetString("nbi")); err == nil && nbiEngine != nil {
55 if sbiEngine, err = sbi.GetSbi(xapp.Config.GetString("sbi")); err == nil && sbiEngine != nil {
56 if sdlEngine, err = sdl.GetSdl(xapp.Config.GetString("sdl")); err == nil && sdlEngine != nil {
57 if rpeEngine, err = rpe.GetRpe(xapp.Config.GetString("rpe")); err == nil && rpeEngine != nil {
58 return nbiEngine, sbiEngine, sdlEngine, rpeEngine, nil
63 return nil, nil, nil, nil, err
66 func serveSBI(triggerSBI <-chan bool, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine) {
69 data, err := sdlEngine.ReadAll(xapp.Config.GetString("rtfile"))
70 if err != nil || data == nil {
71 xapp.Logger.Error("Cannot get data from sdl interface due to: " + err.Error())
74 sbiEngine.UpdateEndpoints(data)
75 policies := rpeEngine.GeneratePolicies(rtmgr.Eps)
76 err = sbiEngine.DistributeAll(policies)
78 xapp.Logger.Error("Routing table cannot be published due to: " + err.Error())
84 func serve(nbiEngine nbi.Engine, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine) {
86 triggerSBI := make(chan bool)
88 nbiErr := nbiEngine.Initialize(xapp.Config.GetString("xmurl"), xapp.Config.GetString("nbiurl"), xapp.Config.GetString("rtfile"), xapp.Config.GetString("cfgfile"),
89 sdlEngine, rpeEngine, triggerSBI)
91 xapp.Logger.Error("Failed to initialize nbi due to: " + nbiErr.Error())
95 err := sbiEngine.Initialize(xapp.Config.GetString("sbiurl"))
97 xapp.Logger.Info("Failed to open push socket due to: " + err.Error())
100 defer nbiEngine.Terminate()
101 defer sbiEngine.Terminate()
103 // This SBI Go routine is trtiggered by periodic main loop and when data is recieved on REST interface.
104 go serveSBI(triggerSBI, sbiEngine, sdlEngine, rpeEngine)
107 if xapp.Config.GetString("nbi") == "httpGetter" {
108 data, err := nbiEngine.(*nbi.HttpGetter).FetchAllXApps(xapp.Config.GetString("xmurl"))
110 xapp.Logger.Error("Cannot fetch xapp data due to: " + err.Error())
111 } else if data != nil {
112 sdlEngine.WriteXApps(xapp.Config.GetString("rtfile"), data)
118 time.Sleep(INTERVAL * time.Second)
119 xapp.Logger.Debug("Periodic loop timed out. Setting triggerSBI flag to distribute updated routes.")
123 func SetupCloseHandler() {
124 c := make(chan os.Signal, 2)
125 signal.Notify(c, os.Interrupt, syscall.SIGTERM)
128 xapp.Logger.Info("\r- Ctrl+C pressed in Terminal")
134 nbiEngine, sbiEngine, sdlEngine, rpeEngine, err := initRtmgr()
136 xapp.Logger.Error(err.Error())
140 xapp.Logger.Info("Start " + SERVICENAME + " service")
141 rtmgr.Eps = make(rtmgr.Endpoints)
142 serve(nbiEngine, sbiEngine, sdlEngine, rpeEngine)