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Add NRF-NFM subscription for PCF registration notification

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This commit is contained in:
herlesupreeth
2024-07-28 21:20:58 +02:00
parent 3f4b520acb
commit 14911cc6a2
1 changed files with 60 additions and 14 deletions
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74
pcscf/kamailio_pcscf.cfg
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@@ -1007,19 +1007,29 @@ route[preload_pcscf] {
#!ifdef WITH_N5
event_route[nghttp2:request] {
nghttp2_reply("404", "<html><body>Not Found</body></html>");
xinfo("request: $nghttp2(method) - url: $nghttp2(path) - data: [$nghttp2(data)]\n");
// Check if the requested URL is /nf-status-notify
if ($nghttp2(path) == "/nf-status-notify") {
nghttp2_reply_header("Content-Type", "text/html");
nghttp2_reply_header("Server:", "PCSCF");
nghttp2_reply("200", "<html><body>PCF registered at PCSCF</body></html>");
} else {
// Optionally handle other URLs or do nothing
nghttp2_reply("404", "<html><body>Not Found</body></html>");
}
}
route[NRF_NFM] {
if ($shv(n5_hb_fail_count) > 5) {
if ($var(n5_hb_fail_count) > 5) {
xlog("L_ERR", "PCSCF NF no longer registered at SCP. Re-attempting registration!!\n");
$shv(n5_initalized) = 0;
$var(n5_initalized) = 0;
}
$var(time_now) = $_s($timef(%a, %d %b %Y %H:%M:%S %Z));
# TODO: Send at heartbeat intervals received in reponse to NF registration
if ($shv(n5_initalized) == 1) {
if ($var(n5_initalized) == 1) {
# Send Heartbeat
$var(nf_hb_headers) = "content-type: application/json-patch+json\r\n";
$var(nf_hb_headers) = $var(nf_hb_headers) + "accept: application/json,application/problem+json\r\n";
@@ -1042,20 +1052,20 @@ route[NRF_NFM] {
}';
jansson_append("obj", "", $var(nf_hb_body), "$var(nf_hb_json_body)");
http_client_request_v2pk("PATCH", "http://SCP_BIND_IP:SCP_BIND_PORT/nnrf-nfm/v1/nf-instances/$shv(pcscf_uuid)", "$var(nf_hb_json_body)", "$var(nf_hb_headers)", "$var(nf_hb_result)");
http_client_request_v2pk("PATCH", "http://SCP_BIND_IP:SCP_BIND_PORT/nnrf-nfm/v1/nf-instances/$var(pcscf_uuid)", "$var(nf_hb_json_body)", "$var(nf_hb_headers)", "$var(nf_hb_result)");
switch ($rc) {
case 204:
$shv(n5_hb_fail_count) = 0;
$var(n5_hb_fail_count) = 0;
break;
default:
$shv(n5_hb_fail_count) = $shv(n5_hb_fail_count) + 1;
$var(n5_hb_fail_count) = $var(n5_hb_fail_count) + 1;
return;
}
return;
}
# Generate UUID for PCSCF
$shv(pcscf_uuid) = $uuid(g);
$var(pcscf_uuid) = $uuid(g);
# Register NF
$var(nf_reg_headers) = "content-type: application/json\r\n";
@@ -1066,7 +1076,7 @@ route[NRF_NFM] {
$var(nf_reg_headers) = $var(nf_reg_headers) + "3gpp-sbi-sender-timestamp: " + $var(time_now);
$var(nf_reg_body) = '{
"nfInstanceId": "$shv(pcscf_uuid)",
"nfInstanceId": "PCSCF_UUID",
"nfType": "PCSCF",
"nfStatus": "REGISTERED",
"ipv4Addresses": ["N5_BIND_IP"],
@@ -1075,8 +1085,8 @@ route[NRF_NFM] {
"capacity": 100,
"load": 0,
"nfServiceList": {
"$shv(pcscf_uuid)": {
"serviceInstanceId": "$shv(pcscf_uuid)",
"PCSCF_UUID": {
"serviceInstanceId": "PCSCF_UUID",
"serviceName": "npcf-policyauthorization",
"versions": [
{
@@ -1102,20 +1112,56 @@ route[NRF_NFM] {
},
"nfProfileChangesSupportInd": true
}';
$var(nf_reg_body) = $(var(nf_reg_body){re.subst,/PCSCF_UUID/$var(pcscf_uuid)/g});
jansson_append("obj", "", "$var(nf_reg_body)", "$var(nf_reg_json_body)");
http_client_request_v2pk("PUT", "http://SCP_BIND_IP:SCP_BIND_PORT/nnrf-nfm/v1/nf-instances/$shv(pcscf_uuid)", "$var(nf_reg_json_body)", "$var(nf_reg_headers)", "$var(nf_reg_result)");
http_client_request_v2pk("PUT", "http://SCP_BIND_IP:SCP_BIND_PORT/nnrf-nfm/v1/nf-instances/$var(pcscf_uuid)", "$var(nf_reg_json_body)", "$var(nf_reg_headers)", "$var(nf_reg_result)");
switch ($rc) {
case 201:
xlog("L_INFO", "P-CSCF NF registered successfully at SCP\n");
$shv(n5_initalized) = 1;
$shv(n5_hb_fail_count) = 0;
$var(n5_initalized) = 1;
$var(n5_hb_fail_count) = 0;
route(NRF_NFM_SUBSCRIBE_PCF);
break;
default:
xlog("L_ERR", "P-CSCF NF failed to register at SCP with code=$rc\n");
return;
}
}
route[NRF_NFM_SUBSCRIBE_PCF] {
# Subscribe to PCF NF registration notification
$var(time_now) = $_s($timef(%a, %d %b %Y %H:%M:%S %Z));
$var(pcf_subc_headers) = "content-type: application/json\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "accept: application/json,application/problem+json\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "3gpp-sbi-discovery-target-nf-type: NRF\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "3gpp-sbi-callback: Nnrf_NFManagement_NFStatusNotify\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "3gpp-sbi-max-rsp-time: 10000\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "3gpp-sbi-discovery-service-names: nnrf-nfm\r\n";
$var(pcf_subc_headers) = $var(pcf_subc_headers) + "3gpp-sbi-sender-timestamp: " + $var(time_now);
$var(pcf_subc_body) = '{
"nfStatusNotificationUri": "http://N5_BIND_IP:N5_BIND_PORT/nnrf-nfm/v1/nf-status-notify",
"reqNfInstanceId": "PCSCF_UUID",
"subscrCond": {
"nfType": "PCF"
},
"reqNfType": "PCSCF",
"requesterFeatures": "1"
}';
$var(pcf_subc_body) = $(var(pcf_subc_body){re.subst,/PCSCF_UUID/$var(pcscf_uuid)/g});
jansson_append("obj", "", "$var(pcf_subc_body)", "$var(pcf_subc_json_body)");
http_client_request_v2pk("POST", "http://SCP_BIND_IP:SCP_BIND_PORT/nnrf-nfm/v1/subscriptions", "$var(pcf_subc_json_body)", "$var(pcf_subc_headers)", "$var(pcf_subc_result)");
switch ($rc) {
case 201:
xlog("L_INFO", "P-CSCF NF subscribed for PCF NF registration notification\n");
break;
default:
xlog("L_ERR", "P-CSCF NF failed to subscribe for PCF NF registration notification\n");
return;
}
}
#!endif
#!ifdef WITH_XMLRPC