This repository contains open-source code for a prototype golang xAPP for near real-time RAN Intelligent Controller which makes use of golang Xapp Framework.
This xAPP aims to provide basic implementation of :
A1 interfaces interactions
Read-write operations into a persistent storage.
xAPP Configuration management
RMR Health Check
xAPP SDL Check
Raising alarms
Generating metrics
E2 Interface intereactions
This document provides guidelines on how to install and configure the HW Golang xAPP in various environments/operating modes. The audience of this document is assumed to have good knowledge in RIC Platform.
This xAPP can be run directly as a Linux binary, as a docker image, or in a pod in a Kubernetes environment. The first two can be used for dev testing. The last option is how an xAPP is deployed in the RAN Intelligent Controller environment. This covers all three methods.
Docker
Linux Binary
Kubernetes
dms_cli offers rich set of command line utility to onboard hw-go xapp to chartmuseme.
First checkout the hw-go repository from gerrit.
git clone "https://gerrit.o-ran-sc.org/r/ric-app/hw-go"
hw-go has following folder structure
├── Dockerfile ├── INFO.yaml ├── LICENSES.txt ├── README.md ├── config │ ├── config-file.json // descriptor for hw-go │ ├── schema.json // schema for controls section of descriptor │ └── uta_rtg.rt // local route file ├── docs ├── go.mod ├── go.sum └── hwApp.go
For onboarding hw-go make sure that dms_cli and helm3 is installed. One can follow documentation to configure dms_cli.
Once dms_cli is availabe we can proceed to onboarding proceure.
configure the export CHART_REPO_URL to point chartmuseme.
$export CHART_REPO_URL=http://<service-ricplt-xapp-onboarder-http.ricplt>:8080
check if dms_cli working fine.
$ dms_cli health True
Now move to config folder to initiate onboarding.
$ cd config
$ dms_cli onboard --config_file_path=config-file.json --shcema_file_path=schema.json
httpGet:
path: '{{ index .Values "readinessProbe" "httpGet" "path" | toJson }}'
port: '{{ index .Values "readinessProbe" "httpGet" "port" | toJson }}'
initialDelaySeconds: '{{ index .Values "readinessProbe" "initialDelaySeconds" | toJson }}'
periodSeconds: '{{ index .Values "readinessProbe" "periodSeconds" | toJson }}'
httpGet:
path: '{{ index .Values "livenessProbe" "httpGet" "path" | toJson }}'
port: '{{ index .Values "livenessProbe" "httpGet" "port" | toJson }}'
initialDelaySeconds: '{{ index .Values "livenessProbe" "initialDelaySeconds" | toJson }}'
periodSeconds: '{{ index .Values "livenessProbe" "periodSeconds" | toJson }}'
{
"status": "Created"
}
Check if hw-go is onborded
$ curl --location --request GET "http://<appmgr>:32080/onboard/api/v1/charts" --header 'Content-Type: application/json'
{
"hw-go": [
{
"name": "hw-go",
"version": "1.0.0",
"description": "Standard xApp Helm Chart",
"apiVersion": "v1",
"appVersion": "1.0",
"urls": [
"charts/hw-go-1.0.0.tgz"
],
"created": "2021-06-24T18:57:41.98056196Z",
"digest": "14a484d9a394ed34eab66e5241ec33e73be8fa70a2107579d19d037f2adf57a0"
}
]
}
If we would wish to download the charts then we can perform following curl operation :
curl --location --request GET "http://<appmgr>:32080/onboard/api/v1/charts/xapp/hw-go/ver/1.0.0" --header 'Content-Type: application/json' --output hw-go.tgz
Now the onboarding is done.
Once charts are available we can deploy the the hw-go using following curl command :
$ curl --location --request POST "http://<appmgr>:32080/appmgr/ric/v1/xapps" --header 'Content-Type: application/json' --data-raw '{"xappName": "hw-go", "helmVersion": "1.0.0"}'
{"instances":null,"name":"hw-go","status":"deployed","version":"1.0"}
Deployment will be done in ricxapp ns :
# kubectl get po -n ricxapp NAME READY STATUS RESTARTS AGE ricxapp-hw-go-55ff7549df-kpj6k 1/1 Running 0 2m # kubectl get svc -n ricxapp NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE aux-entry ClusterIP IP1 <none> 80/TCP,443/TCP 73d service-ricxapp-hw-go-http ClusterIP IP2 <none> 8080/TCP 103m service-ricxapp-hw-go-rmr ClusterIP IP3 <none> 4560/TCP,4561/TCP 103m
Now we can query to appmgr to get list of all the deployed xapps :
# curl http://service-ricplt-appmgr-http.ricplt:8080/ric/v1/xapps | jq .
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 347 100 347 0 0 578 0 --:--:-- --:--:-- --:--:-- 579
[
{
"instances": [
{
"ip": "service-ricxapp-hw-go-rmr.ricxapp",
"name": "hw-go-55ff7549df-kpj6k",
"policies": [
1
],
"port": 4560,
"rxMessages": [
"RIC_SUB_RESP",
"A1_POLICY_REQ",
"RIC_HEALTH_CHECK_REQ"
],
"status": "running",
"txMessages": [
"RIC_SUB_REQ",
"A1_POLICY_RESP",
"A1_POLICY_QUERY",
"RIC_HEALTH_CHECK_RESP"
]
}
],
"name": "hw-go",
"status": "deployed",
"version": "1.0"
}
]
Logs from hw-go :
# kubectl logs ricxapp-hw-go-55ff7549df-kpj6k -n ricxapp
{"ts":1624562552123,"crit":"INFO","id":"hw-app","mdc":{"time":"2021-06-24T19:22:32"},"msg":"Using config file: config/config-file.json"}
{"ts":1624562552124,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Serving metrics on: url=/ric/v1/metrics namespace=ricxapp"}
{"ts":1624562552133,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp SDL Stored The total number of stored SDL transactions map[]}"}
{"ts":1624562552133,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp SDL StoreError The total number of SDL store errors map[]}"}
1624562552 6/RMR [INFO] ric message routing library on SI95 p=0 mv=3 flg=00 (fd4477a 4.5.2 built: Jan 21 2021)
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"new rmrClient with parameters: ProtPort=0 MaxSize=0 ThreadType=0 StatDesc=RMR LowLatency=false FastAck=false Policies=[]"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp RMR Transmitted The total number of transmited RMR messages map[]}"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp RMR Received The total number of received RMR messages map[]}"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp RMR TransmitError The total number of RMR transmission errors map[]}"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Register new counter with opts: {ricxapp RMR ReceiveError The total number of RMR receive errors map[]}"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"Xapp started, listening on: :8080"}
{"ts":1624562552140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:32"},"msg":"rmrClient: Waiting for RMR to be ready ..."}
{"ts":1624562553140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:33"},"msg":"rmrClient: RMR is ready after 1 seconds waiting..."}
{"ts":1624562553141,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:33"},"msg":"xApp ready call back received"}
1624562553 6/RMR [INFO] sends: ts=1624562553 src=service-ricxapp-hw-go-rmr.ricxapp:0 target=localhost:4591 open=0 succ=0 fail=0 (hard=0 soft=0)
1624562553 6/RMR [INFO] sends: ts=1624562553 src=service-ricxapp-hw-go-rmr.ricxapp:0 target=localhost:4560 open=0 succ=0 fail=0 (hard=0 soft=0)
1624562553 6/RMR [INFO] sends: ts=1624562553 src=service-ricxapp-hw-go-rmr.ricxapp:0 target=service-ricplt-a1mediator-rmr.ricplt:4562 open=0 succ=0 fail=0 (hard=0 soft=0)
RMR is ready now ...
{"ts":1624562557140,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:37"},"msg":"Application='hw-go' is not ready yet, waiting ..."}
{"ts":1624562562141,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:42"},"msg":"Application='hw-go' is not ready yet, waiting ..."}
{"ts":1624562567141,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:47"},"msg":"Application='hw-go' is not ready yet, waiting ..."}
{"ts":1624562567370,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:47"},"msg":"restapi: method=GET url=/ric/v1/health/ready"}
{"ts":1624562569766,"crit":"INFO","id":"hw-app","mdc":{"CONTAINER_NAME":"","HOST_NAME":"","HWApp":"0.0.1","PID":"6","POD_NAME":"","SERVICE_NAME":"","SYSTEM_NAME":"","time":"2021-06-24T19:22:49"},"msg":"restapi: method=GET url=/ric/v1/health/alive"}
Here we are done with the onboaring and deployment of hw-go.
Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, 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.