HelloWorld demo xApps

Does anyone have a guide to build this xapp. I'm trying to port the helloworld xapp to arm64. I can provide my Dockerfile and the output which are failing.

In hw-python‘s Readme file,  it says "the HW xapp can be either tested as a Linux binary or as a docker image."

However, no matter whether I directly execute the py file or docker image, I can't see any logs about A1 police. I guess it didn't receive the RMR messesage.

So, does RMR message can be used normally only after xapp is deployed?
Is there any way to communicate directly with xapp through RMR?

Hello, Matti Hiltunen subhash kumar singh,i try my best to run this xapp based on your READ.me.

step1 : 

docker build --no-cache -t hw-python ./

run successfully.

But step2 :

docker run hw-python:latest

i got this:

Traceback (most recent call last):
File "/usr/local/bin/run-hw-python.py", line 5, in <module>
from src.main import launchXapp
File "/usr/local/lib/python3.8/site-packages/src/main.py", line 19, in <module>
from .hwxapp import HWXapp
File "/usr/local/lib/python3.8/site-packages/src/hwxapp.py", line 24, in <module>
from .manager import *
File "/usr/local/lib/python3.8/site-packages/src/manager/__init__.py", line 22, in <module>
from .SubscriptionManager import SubscriptionManager
File "/usr/local/lib/python3.8/site-packages/src/manager/SubscriptionManager.py", line 27, in <module>
from swagger_client import api_client
ModuleNotFoundError: No module named 'swagger_client'

i am looking for your reply! Thank you very much.

Hi Matti Hiltunen subhash kumar singh ,

when I run the hw-python xapp i get below error in docker container.

After follwing steps  1)   docker build --no-cache -t hw-python ./  and  2) docker run hw-python:latest

what could be the issue?

-------------------------

ec019c2a968e:/usr/local/bin# ./run-hw-python.py 
1676285250 54/RMR [INFO] ric message routing library on SI95/g mv=3 flg=02 (f25dc7f 4.0.5 built: May  7 2020)
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 607, in connect
    sock = self._connect()
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 639, in _connect
    for res in socket.getaddrinfo(
  File "/usr/local/lib/python3.8/socket.py", line 918, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name does not resolve

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/ricsdl/backend/redis.py", line 47, in _map_to_sdl_exception
    yield
  File "/usr/local/lib/python3.8/site-packages/ricsdl/backend/redis.py", line 212, in find_keys
    ret = self.__getClient(ns).keys(db_key_pattern)
  File "/usr/local/lib/python3.8/site-packages/redis/commands/core.py", line 1370, in keys
    return self.execute_command("KEYS", pattern, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 1173, in execute_command
    conn = self.connection or pool.get_connection(command_name, **options)
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 1358, in get_connection
    connection.connect()
  File "/usr/local/lib/python3.8/site-packages/redis/connection.py", line 611, in connect
    raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error -2 connecting to service-ricplt-dbaas-tcp.ricplt.svc.cluster.local:6379. Name does not resolve.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "./run-hw-python.py", line 8, in <module>
    sys.exit(launchXapp())
  File "/usr/local/lib/python3.8/site-packages/src/main.py", line 23, in launchXapp
    hwxapp = HWXapp()
  File "/usr/local/lib/python3.8/site-packages/src/hwxapp.py", line 34, in __init__
    self._rmr_xapp = RMRXapp(self._default_handler,
  File "/usr/local/lib/python3.8/site-packages/ricxappframe/xapp_frame.py", line 645, in __init__
    super().__init__(
  File "/usr/local/lib/python3.8/site-packages/ricxappframe/xapp_frame.py", line 124, in __init__
    post_init(self)
  File "/usr/local/lib/python3.8/site-packages/src/hwxapp.py", line 47, in _post_init
    sdl_mgr.sdlGetGnbList()
  File "/usr/local/lib/python3.8/site-packages/src/manager/SdlManager.py", line 32, in sdlGetGnbList
    gnblist = self._rmr_xapp.sdl_find_and_get(self.__namespace, "GNB")
  File "/usr/local/lib/python3.8/site-packages/ricxappframe/xapp_frame.py", line 455, in sdl_find_and_get
    return self.sdl.find_and_get(namespace, prefix, usemsgpack)
  File "/usr/local/lib/python3.8/site-packages/ricxappframe/xapp_sdl.py", line 226, in find_and_get
    ret_dict = self._sdl.find_and_get(ns, f"{prefix}*")
  File "/usr/local/lib/python3.8/site-packages/ricsdl/syncstorage.py", line 49, in _validate
    return func(*args, **kwds)
  File "/usr/local/lib/python3.8/site-packages/ricsdl/syncstorage.py", line 172, in find_and_get
    disordered = self.__dbbackend.find_and_get(ns, key_pattern)
  File "/usr/local/lib/python3.8/site-packages/ricsdl/backend/redis.py", line 219, in find_and_get
    matched_keys = self.find_keys(ns, key_pattern)
  File "/usr/local/lib/python3.8/site-packages/ricsdl/backend/redis.py", line 213, in find_keys
    return self.__strip_ns_from_bin_keys(ns, ret)
  File "/usr/local/lib/python3.8/contextlib.py", line 131, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.8/site-packages/ricsdl/backend/redis.py", line 52, in _map_to_sdl_exception
    raise NotConnected("SDL not connected to backend: {}".

docker run hw-python:latest

1676285251 54/RMR [INFO] sends: ts=1676285251 src=ec019c2a968e:4560 target=service-ricplt-a1mediator-rmr.ricplt:4562 open=0 succ=0 fail=0 (hard=0 soft=0)