Fixed integration and subscription routes related issues for R3

[ric-plt/rtmgr.git] / cmd / rtmgr.go

diff --git a/cmd/rtmgr.go b/cmd/rtmgr.go
index e4f76d8..568b7ad 100644 (file)
--- a/cmd/rtmgr.go
+++ b/cmd/rtmgr.go
@@ -14,6 +14,12 @@
    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.
    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.

+
+
+   This source code is part of the near-RT RIC (RAN Intelligent Controller)
+   platform project (RICP).
+
+

 ==================================================================================
 */
 /*
 ==================================================================================
 */
 /*


@@ -26,56 +32,49 @@
 */
 package main
 
 */
 package main
 

+//TODO: change flag to pflag (won't need any argument parse)

 import (
        "flag"
 import (
        "flag"

-       "nbi"

        "os"
        "os"

-       "rpe"
-       "rtmgr"
-       "sbi"
-       "sdl"
+       "os/signal"
+       "routing-manager/pkg/nbi"
+       "routing-manager/pkg/rpe"
+       "routing-manager/pkg/rtmgr"
+       "routing-manager/pkg/sbi"
+       "routing-manager/pkg/sdl"
+       "syscall"

        "time"
 )
 
 const SERVICENAME = "rtmgr"
        "time"
 )
 
 const SERVICENAME = "rtmgr"

-const INTERVAL time.Duration = 2
+const INTERVAL time.Duration = 60

 
 var (
 
 var (

-       args *map[string]string
+       args map[string]*string

 )
 
 func parseArgs() {
 )
 
 func parseArgs() {

-       a := make(map[string]string)
-       xmgeturl := flag.String("nbi-httpget", "http://localhost:3000/xapps", "xApp Manager URL")
-       nngpubsock := flag.String("sbi-nngsub", "tcp://0.0.0.0:4560", "NNG Subsciption Socket URI")
-       file := flag.String("sdl-file", "/db/rt.json", "Local file store location")
-       rpename := flag.String("rpe", "rmr", "Policy Engine Module name")
-       loglevel := flag.String("loglevel", "INFO", "INFO | WARN | ERROR | DEBUG")
+       // TODO: arguments should be validated (filename; xm-url; sbi-if; rest-url; rest-port)
+       args = make(map[string]*string)
+       args["configfile"] = flag.String("configfile", "/etc/rtmgrcfg.json", "Routing manager's configuration file path")
+       args["nbi"] = flag.String("nbi", "httpRESTful", "Northbound interface module to be used. Valid values are: 'httpGetter | httpRESTful'")
+       args["sbi"] = flag.String("sbi", "nngpush", "Southbound interface module to be used. Valid values are: 'nngpush")
+       args["rpe"] = flag.String("rpe", "rmrpush", "Route Policy Engine to be used. Valid values are: 'rmrpush'")
+       args["sdl"] = flag.String("sdl", "file", "Data store engine to be used. Valid values are: 'file'")
+       args["xm-url"] = flag.String("xm-url", "http://localhost:3000/xapps", "HTTP URL where xApp Manager exposes the entire xApp List")
+       args["nbi-if"] = flag.String("nbi-if", "http://localhost:8888", "Base HTTP URL where routing manager will be listening on")
+       args["sbi-if"] = flag.String("sbi-if", "0.0.0.0", "IPv4 address of interface where Southbound socket to be opened")
+       args["filename"] = flag.String("filename", "/db/rt.json", "Absolute path of file where the route information to be stored")
+       args["loglevel"] = flag.String("loglevel", "INFO", "INFO | WARN | ERROR | DEBUG | TRACE")

        flag.Parse()
        flag.Parse()

-       if (*xmgeturl) != "" {
-               a["xmurl"] = (*xmgeturl)
-               a["nbiname"] = "httpGetter"
-       }
-       if (*nngpubsock) != "" {
-               a["socketuri"] = (*nngpubsock)
-               a["sbiname"] = "nngpub"
-       }
-       if (*file) != "" {
-               a["file"] = (*file)
-               a["sdlname"] = "file"
-       }
-       a["rpename"] = (*rpename)
-       a["loglevel"] = (*loglevel)
-       args = &a

 }
 
 }
 

-func initRtmgr() (*nbi.NbiEngineConfig, *sbi.SbiEngineConfig, *sdl.SdlEngineConfig, *rpe.RpeEngineConfig, error) {
-       var err error
-       if nbi, err := nbi.GetNbi((*args)["nbiname"]); err == nil && nbi != nil {
-               if sbi, err := sbi.GetSbi((*args)["sbiname"]); err == nil && sbi != nil {
-                       if sdl, err := sdl.GetSdl((*args)["sdlname"]); err == nil && sdl != nil {
-                               if rpe, err := rpe.GetRpe((*args)["rpename"]); err == nil && rpe != nil {
-                                       return nbi, sbi, sdl, rpe, nil
+func initRtmgr() (nbiEngine nbi.Engine, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine, err error) {
+       if nbiEngine, err = nbi.GetNbi(*args["nbi"]); err == nil && nbiEngine != nil {
+               if sbiEngine, err = sbi.GetSbi(*args["sbi"]); err == nil && sbiEngine != nil {
+                       if sdlEngine, err = sdl.GetSdl(*args["sdl"]); err == nil && sdlEngine != nil {
+                               if rpeEngine, err = rpe.GetRpe(*args["rpe"]); err == nil && rpeEngine != nil {
+                                       return nbiEngine, sbiEngine, sdlEngine, rpeEngine, nil

                                }
                        }
                }
                                }
                        }
                }


@@ -83,43 +82,84 @@ func initRtmgr() (*nbi.NbiEngineConfig, *sbi.SbiEngineConfig, *sdl.SdlEngineConf
        return nil, nil, nil, nil, err
 }
 
        return nil, nil, nil, nil, err
 }
 

-func serve(nbi *nbi.NbiEngineConfig, sbi *sbi.SbiEngineConfig, sdl *sdl.SdlEngineConfig, rpe *rpe.RpeEngineConfig) {
-       err := sbi.OpenSocket((*args)["socketuri"])
+func serveSBI(triggerSBI <-chan bool, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine) {
+       for {
+               if <-triggerSBI {
+                       data, err := sdlEngine.ReadAll(*args["filename"])
+                       if err != nil || data == nil {
+                               rtmgr.Logger.Error("Cannot get data from sdl interface due to: " + err.Error())
+                               continue
+                       }
+                       sbiEngine.UpdateEndpoints(data)
+                       policies := rpeEngine.GeneratePolicies(rtmgr.Eps)
+                       err = sbiEngine.DistributeAll(policies)
+                       if err != nil {
+                               rtmgr.Logger.Error("Routing table cannot be published due to: " + err.Error())
+                       }
+               }
+       }
+}
+
+func serve(nbiEngine nbi.Engine, sbiEngine sbi.Engine, sdlEngine sdl.Engine, rpeEngine rpe.Engine) {
+
+       triggerSBI := make(chan bool)
+
+       nbiErr := nbiEngine.Initialize(*args["xm-url"], *args["nbi-if"], *args["filename"], *args["configfile"],
+               sdlEngine, rpeEngine, triggerSBI)
+       if nbiErr != nil {
+               rtmgr.Logger.Error("Failed to initialize nbi due to: " + nbiErr.Error())
+               return
+       }
+
+       err := sbiEngine.Initialize(*args["sbi-if"])

        if err != nil {
        if err != nil {

-               rtmgr.Logger.Info("fail to open pub socket due to: " + err.Error())
+               rtmgr.Logger.Info("Failed to open push socket due to: " + err.Error())

                return
        }
                return
        }

-       defer sbi.CloseSocket()
+       defer nbiEngine.Terminate()
+       defer sbiEngine.Terminate()
+
+       // This SBI Go routine is trtiggered by periodic main loop and when data is recieved on REST interface.
+       go serveSBI(triggerSBI, sbiEngine, sdlEngine, rpeEngine)
+

        for {
        for {

-               time.Sleep(INTERVAL * time.Second)
-               data, err := nbi.BatchFetch((*args)["xmurl"])
-               if err != nil {
-                       rtmgr.Logger.Error("cannot get data from " + nbi.Engine.Name + " interface dute to: " + err.Error())
-               } else {
-                       sdl.WriteAll((*args)["file"], data)
-               }
-               data, err = sdl.ReadAll((*args)["file"])
-               if err != nil || data == nil {
-                       rtmgr.Logger.Error("cannot get data from " + sdl.Engine.Name + " interface dute to: " + err.Error())
-                       continue
-               }
-               policies := rpe.GeneratePolicies(data)
-               err = sbi.DistributeAll(policies)
-               if err != nil {
-                       rtmgr.Logger.Error("routing rable cannot be published due to: " + err.Error())
+               if *args["nbi"] == "httpGetter" {
+                       data, err := nbiEngine.(*nbi.HttpGetter).FetchAllXApps(*args["xm-url"])
+                       if err != nil {
+                               rtmgr.Logger.Error("Cannot fetch xapp data due to: " + err.Error())
+                       } else if data != nil {
+                               sdlEngine.WriteXApps(*args["filename"], data)
+                       }

                }
                }

+
+               triggerSBI <- true
+
+               time.Sleep(INTERVAL * time.Second)
+               rtmgr.Logger.Debug("Periodic loop timed out. Setting triggerSBI flag to distribute updated routes.")

        }
 }
 
        }
 }
 

+func SetupCloseHandler() {
+       c := make(chan os.Signal, 2)
+       signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+       go func() {
+               <-c
+               rtmgr.Logger.Info("\r- Ctrl+C pressed in Terminal")
+               os.Exit(0)
+       }()
+}
+

 func main() {
        parseArgs()
 func main() {
        parseArgs()

-       rtmgr.SetLogLevel((*args)["loglevel"])
-       nbi, sbi, sdl, rpe, err := initRtmgr()
+       rtmgr.SetLogLevel(*args["loglevel"])
+       nbiEngine, sbiEngine, sdlEngine, rpeEngine, err := initRtmgr()

        if err != nil {
                rtmgr.Logger.Error(err.Error())
                os.Exit(1)
        }
        if err != nil {
                rtmgr.Logger.Error(err.Error())
                os.Exit(1)
        }

+       SetupCloseHandler()

        rtmgr.Logger.Info("Start " + SERVICENAME + " service")
        rtmgr.Logger.Info("Start " + SERVICENAME + " service")

-       serve(nbi, sbi, sdl, rpe)
+       rtmgr.Eps = make(rtmgr.Endpoints)
+       serve(nbiEngine, sbiEngine, sdlEngine, rpeEngine)

        os.Exit(0)
 }
        os.Exit(0)
 }