NRF defaultNotificationSubscriptions missing when the requested profile sent by NRF

[havelkadragan]

Open5GS Release, Revision, or Tag

v2.7.1

Steps to reproduce

Register an NF profile that contains defaultNotificationSubscriptions present in the profile. Everything works fine and the NRF will reply with the correct profile back. Thereafter send the request [GET] /nnrf-disc/v1/nf-instances for that specific profile and the NRF will send back the profile without defaultNotificationSubscriptions object.

Logs

Registration:

06/17 09:28:24.012: [sbi] DEBUG: {"heartBeatTimer":60,"ipv4Addresses":["192.168.56.236"],"load":47,"nfInstanceId":"84535c79-03c5-4db6-a788-e1aa30f6ba04","nfInstanceName":"MAA_LMF","nfServiceList":{"adf5c568-4a22-4200-ac6d-929133de8e1a":{"defaultNotificationSubscriptions":[{"callbackUri":"http://192.168.56.236:8072/nlmf-loc/v1/lpp","n1MessageClass":"LPP","notificationType":"N1_MESSAGES","versions":["v1"]},{"callbackUri":"http://192.168.56.236:8072/nlmf-loc/v1/nrppa","n2InformationClass":"NRPPa","notificationType":"N2_INFORMATION","versions":["v1"]}],"ipEndPoints":[{"ipv4Address":"192.168.56.236","port":8072}],"nfServiceStatus":"REGISTERED","scheme":"http","serviceInstanceId":"adf5c568-4a22-4200-ac6d-929133de8e1a","serviceName":"nlmf-loc","versions":[{"apiFullVersion":"1.0.0","apiVersionInUri":"v1"}]}},"nfStatus":"REGISTERED","nfType":"LMF","scpDomains":["ma.local"]} (../lib/sbi/nghttp2-server.c:1164)
06/17 09:28:24.012: [nrf] DEBUG: nrf_state_operational(): OGS_EVENT_NAME_SBI_SERVER (../src/nrf/nrf-sm.c:52)
06/17 09:28:24.013: [sbi] DEBUG: [REF] 1 (../lib/sbi/context.c:1088)
06/17 09:28:24.013: [sbi] DEBUG: [NULL] NFInstance added with Ref [(null):1] (../lib/sbi/context.c:1099)
06/17 09:28:24.013: [nrf] DEBUG: nrf_nf_state_initial(): ENTRY (../src/nrf/nf-sm.c:55)
06/17 09:28:24.013: [nrf] DEBUG: nrf_nf_state_will_register(): ENTRY (../src/nrf/nf-sm.c:93)
06/17 09:28:24.013: [nrf] DEBUG: nrf_nf_state_will_register(): OGS_EVENT_NAME_SBI_SERVER (../src/nrf/nf-sm.c:93)
06/17 09:28:24.013: [sock] DEBUG: addr:192.168.56.236, port:80 (../lib/core/ogs-sockaddr.c:143)
06/17 09:28:24.013: [sock] DEBUG: addr:192.168.56.236, port:8072 (../lib/core/ogs-sockaddr.c:143)
06/17 09:28:24.013: [sbi] DEBUG: nf_instance_find_client: ogs_sbi_client_add() (../lib/sbi/context.c:1903)
06/17 09:28:24.013: [sbi] DEBUG: ogs_sbi_client_add [http] (../lib/sbi/client.c:133)
06/17 09:28:24.013: [sbi] DEBUG: [REF] 1 (../lib/sbi/client.c:134)
06/17 09:28:24.013: [sbi] DEBUG: CLEINT added with Ref [1] (../lib/sbi/client.c:167)
06/17 09:28:24.013: [sbi] DEBUG: [LMF] NFInstance associated [84535c79-03c5-4db6-a788-e1aa30f6ba04:1] (../lib/sbi/context.c:2205)
06/17 09:28:24.013: [sbi] DEBUG: [REF] 2 (../lib/sbi/context.c:2210)
06/17 09:28:24.014: [sbi] DEBUG: CLIENT Ref [2] (../lib/sbi/context.c:2210)
06/17 09:28:24.014: [sbi] DEBUG: nf_service_associate_client: ogs_sbi_client_add() (../lib/sbi/context.c:1933)
06/17 09:28:24.014: [sbi] DEBUG: ogs_sbi_client_add [http] (../lib/sbi/client.c:133)
06/17 09:28:24.014: [sbi] DEBUG: [REF] 1 (../lib/sbi/client.c:134)
06/17 09:28:24.014: [sbi] DEBUG: CLEINT added with Ref [1] (../lib/sbi/client.c:167)
06/17 09:28:24.014: [sbi] DEBUG: [nlmf-loc] NFService associated [adf5c568-4a22-4200-ac6d-929133de8e1a] (../lib/sbi/context.c:1943)
06/17 09:28:24.014: [sbi] DEBUG: [REF] 2 (../lib/sbi/context.c:1946)
06/17 09:28:24.014: [sbi] DEBUG: CLIENT Ref [2] (../lib/sbi/context.c:1946)
06/17 09:28:24.014: [sbi] DEBUG: STATUS [201] (../lib/sbi/nghttp2-server.c:640)
06/17 09:28:24.014: [sbi] DEBUG: SENDING...: 844 (../lib/sbi/nghttp2-server.c:648)
06/17 09:28:24.014: [sbi] DEBUG: {"nfInstanceId":"84535c79-03c5-4db6-a788-e1aa30f6ba04","nfInstanceName":"MAA_LMF","nfType":"LMF","nfStatus":"REGISTERED","heartBeatTimer":60,"ipv4Addresses":["192.168.56.236"],"load":47,"nfServiceList":{"adf5c568-4a22-4200-ac6d-929133de8e1a":{"serviceInstanceId":"adf5c568-4a22-4200-ac6d-929133de8e1a","serviceName":"nlmf-loc","versions":[{"apiVersionInUri":"v1","apiFullVersion":"1.0.0"}],"scheme":"http","nfServiceStatus":"REGISTERED","ipEndPoints":[{"ipv4Address":"192.168.56.236","port":8072}],"defaultNotificationSubscriptions":[{"notificationType":"N1_MESSAGES","callbackUri":"http://192.168.56.236:8072/nlmf-loc/v1/lpp","n1MessageClass":"LPP","versions":["v1"]},{"notificationType":"N2_INFORMATION","callbackUri":"http://192.168.56.236:8072/nlmf-loc/v1/nrppa","n2InformationClass":"NRPPa","versions":["v1"]}]}},"scpDomains":["ma.local"]} (../lib/sbi/nghttp2-server.c:649)
06/17 09:28:24.015: [sbi] DEBUG: STREAM closed [5] (../lib/sbi/nghttp2-server.c:1268)
06/17 09:28:24.015: [nrf] DEBUG: nrf_nf_state_will_register(): EXIT (../src/nrf/nf-sm.c:93)
06/17 09:28:24.015: [nrf] DEBUG: nrf_nf_state_registered(): ENTRY (../src/nrf/nf-sm.c:185)
06/17 09:28:24.015: [nrf] INFO: [84535c79-03c5-4db6-a788-e1aa30f6ba04] NF registered [Heartbeat:60s] (../src/nrf/nf-sm.c:192)

Request for the NF profile and response from NRF (note that defaultNotificationSubscriptions is removed):

06/17 09:33:28.099: [sbi] DEBUG: [GET] /nnrf-disc/v1/nf-instances (../lib/sbi/nghttp2-server.c:1158)
06/17 09:33:28.099: [nrf] DEBUG: nrf_state_operational(): OGS_EVENT_NAME_SBI_SERVER (../src/nrf/nrf-sm.c:52)
06/17 09:33:28.099: [nrf] DEBUG: NF-Discover : Requester[AMF] Target[LMF] (../src/nrf/nnrf-handler.c:802)
06/17 09:33:28.099: [nrf] DEBUG: [84535c79-03c5-4db6-a788-e1aa30f6ba04:0] NF-Discovered [NF-Type:LMF,NF-Status:REGISTERED,IPv4:1,IPv6:0] (../src/nrf/nnrf-handler.c:895)
06/17 09:33:28.099: [sbi] DEBUG: STATUS [200] (../lib/sbi/nghttp2-server.c:640)
06/17 09:33:28.099: [sbi] DEBUG: SENDING...: 608 (../lib/sbi/nghttp2-server.c:648)
06/17 09:33:28.099: [sbi] DEBUG: {"validityPeriod":3600,"nfInstances":[{"nfInstanceId":"84535c79-03c5-4db6-a788-e1aa30f6ba04","nfType":"LMF","nfStatus":"REGISTERED","heartBeatTimer":60,"plmnList":[{"mcc":"999","mnc":"70"}],"ipv4Addresses":["192.168.56.236"],"priority":0,"capacity":100,"load":47,"nfServices":[{"serviceInstanceId":"adf5c568-4a22-4200-ac6d-929133de8e1a","serviceName":"nlmf-loc","versions":[{"apiVersionInUri":"v1","apiFullVersion":"1.0.0"}],"scheme":"http","nfServiceStatus":"REGISTERED","ipEndPoints":[{"ipv4Address":"192.168.56.236","port":8072}],"priority":0,"capacity":100,"load":0}],"nfProfileChangesSupportInd":true}]} (../lib/sbi/nghttp2-server.c:649)
06/17 09:33:28.099: [sbi] DEBUG: STREAM closed [5] (../lib/sbi/nghttp2-server.c:1268)

Expected behaviour

Expected behavior is that the complete NF profile is sent in the reply including defaultNotificationSubscriptions

Observed Behaviour

defaultNotificationSubscriptions is missing in the reported NF profile by the NRF

eNodeB/gNodeB

No response

UE Models and versions

No response

[havelkadragan]

Hi,
I see that you don't consider this as a bug. Is this a limitation in the implementation or I misunderstood how NRF should behave?