fix: Ignore NRF URI containing a specific IP on registration

factory/config.example.yaml

@@ -0,0 +1,22 @@
+## SPDX-FileCopyrightText: 2023 Open Networking Foundation <[email protected]>
+##
+## SPDX-License-Identifier: Apache-2.0
+##
+info:
+  version: 1.0.0
+  description: UDR initial local configuration
+
+configuration:
+  sbi: # Service-based interface information
+    scheme: https
+    registerIPv4: 127.0.0.4
+    bindingIPv4: 0.0.0.0
+    port: 8000
+  plmnSupportList:
+    - plmnId:
+        mcc: "208"
+        mnc: "93"
+      snssaiList:
+        - sst: 1
+          sd: "010203"
+

factory/config.go

@@ -11,10 +11,10 @@
 package factory
 
 import (
+	protos "github.com/omec-project/config5g/proto/sdcoreConfig"
 	"github.com/omec-project/logger_util"
 	"github.com/omec-project/openapi/models"
 	"github.com/omec-project/udr/logger"
-	protos "github.com/omec-project/config5g/proto/sdcoreConfig"
 )
 
 const (

service/init.go

@@ -307,7 +307,7 @@ func (udr *UDR) configUpdateDb() {
 		if err == nil {
 			initLog.Infof("added entry to sm policy table success")
 		} else {
-			initLog.Errorln("entry add failed ", err)
+			initLog.Errorf("entry add failed %+v", err)
 		}
 	}
 }
@@ -386,15 +386,13 @@ func (udr *UDR) registerNF() {
 		initLog.Infof("Minimum configuration from config pod available %v", msg)
 		self := udr_context.UDR_Self()
 		profile := consumer.BuildNFInstance(self)
-		var newNrfUri string
 		var err error
 		var prof models.NfProfile
 		// send registration with updated PLMN Ids.
-		prof, newNrfUri, self.NfId, err = consumer.SendRegisterNFInstance(self.NrfUri, profile.NfInstanceId, profile)
+		prof, _, self.NfId, err = consumer.SendRegisterNFInstance(self.NrfUri, profile.NfInstanceId, profile)
 		if err == nil {
 			udr.StartKeepAliveTimer(prof)
-			logger.CfgLog.Infof("Sent Register NF Instance with updated profile")
-			self.NrfUri = newNrfUri
+			logger.CfgLog.Infoln("Sent Register NF Instance with updated profile")
 		} else {
 			initLog.Errorf("Send Register NFInstance Error[%s]", err.Error())
 		}

service/init_test.go

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2023 Open Networking Foundation <[email protected]>
+//
+
+package service
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/omec-project/udr/context"
+	"github.com/omec-project/udr/factory"
+)
+
+func Test_nrf_url_is_not_overwritten_when_registering(t *testing.T) {
+	svr := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "banana")
+	}))
+	svr.EnableHTTP2 = true
+	svr.StartTLS()
+	defer svr.Close()
+	if err := factory.InitConfigFactory("../factory/config.example.yaml"); err != nil {
+		t.Fatalf("Could not read example configuration file")
+	}
+	self := context.UDR_Self()
+	self.NrfUri = svr.URL
+	self.RegisterIPv4 = "127.0.0.2"
+	var udr *UDR
+	go udr.registerNF()
+	factory.ConfigPodTrigger <- true
+
+	time.Sleep(1 * time.Second)
+	if self.NrfUri != svr.URL {
+		t.Errorf("Expected NRF URL to stay %v, but was %v", svr.URL, self.NrfUri)
+	}
+}