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"""Utility functions that invoke operations of simulator script."""
import os
import sys
import time
import urllib.parse
import yaml
from ipaddress import ip_address
from typing import Dict, Optional
from decorator import decorator
import docker
from onapsdk.configuration import settings
from onaptests.masspnfsimulator.MassPnfSim import (
MassPnfSim, get_parser
)
def get_config() -> Dict:
"""Read a config YAML file."""
config = None
dir_path = os.path.dirname(os.path.realpath(__file__))
with open(f"{dir_path}/pnf_config.yaml", "r") as ymlfile:
config = yaml.load(ymlfile)
return config
def get_default_args() -> None:
"""Prepare default arguments for required operations.
Returns:
args (argparse.Namespace): default arguments.
"""
parser = get_parser()
args = parser.parse_args('')
return args
def switch_workdir(back_pwd: str = None) -> Optional[str]:
"""Switch work directory temporarily for PNF simulator operations.
When `back_pwd` path is provided, it means go back tp the repository
you came from.
Arguments:
back_pwd: path to go back to.
Returns:
old_pwd (str): previous path.
"""
sim_file_path = sys.modules[MassPnfSim.__module__].__file__
sim_dir_path = os.path.dirname(sim_file_path)
old_pwd = os.getcwd()
if not back_pwd:
curr_pwd = sim_dir_path
else:
curr_pwd = back_pwd
os.chdir(curr_pwd)
return old_pwd
@decorator
def chdir(func, *args, **kwargs):
"""Switches to and from the simulator workspace."""
old_pwd = switch_workdir()
ret = func(*args, **kwargs)
switch_workdir(old_pwd)
return ret
@chdir
def build_image() -> None:
"""Build simulator image."""
build = getattr(MassPnfSim(), "build")
args = get_default_args()
build(args)
@chdir
def remove_image() -> None:
"""Remove simulator image(s)."""
client = docker.from_env()
sim_image_name = "nexus3.onap.org:10003/onap/masspnf-simulator"
images = client.images.list(sim_image_name)
for obj in images:
client.images.remove(obj.id, force=True)
@chdir
def bootstrap_simulator() -> None:
"""Setup simulator(s) repo, data and configs."""
args = get_default_args()
config = get_config()
# collect settings that will be placed in the simulator directory
vesprotocol = config["setup"].get('vesprotocol', "http")
ves_url = urllib.parse.urlparse(settings.VES_URL)
vesip = ves_url.hostname
vesport = ves_url.port
vesresource = config["setup"].get('vesresource', "")
vesversion = config["setup"].get('vesversion', "")
urlves = f"{vesprotocol}://{vesip}:{vesport}/{vesresource}/{vesversion}"
# assign to simulator's arguments
args.count = config["setup"].get('count', 1)
args.urlves = urlves
args.ipstart = ip_address(config["setup"].get('ipstart', ''))
args.ipfileserver = config["setup"].get('ipfileserver', '')
args.typefileserver = config["setup"].get('typefileserver', '')
args.user = config["setup"].get('user', '')
args.password = config["setup"].get('password', '')
# bootstrap with assigned arguments
bootstrap = getattr(MassPnfSim(), "bootstrap")
bootstrap(args)
@chdir
def run_container() -> None:
"""Run simulator container(s)."""
start = getattr(MassPnfSim(), "start")
args = get_default_args()
start(args)
@chdir
def register() -> None:
"""Send an event to VES.
Use time.sleep(seconds) if registering with VES right after run_container().
Containers take a few seconds to run properly. Normally 5 seconds should be
enough.
"""
time.sleep(5)
config = get_config()
trigger = getattr(MassPnfSim(), "trigger")
args = get_default_args()
args.user = config['setup'].get('user', '')
args.password = config['setup'].get('password', '')
custom_data = config['data']
if custom_data:
args.data = custom_data
trigger(args)
@chdir
def stop_container() -> None:
"""Stop simulator container(s)."""
stop = getattr(MassPnfSim(), "stop")
args = get_default_args()
stop(args)
@chdir
def remove_simulator() -> None:
"""Remove simulator container(s)."""
clean = getattr(MassPnfSim(), "clean")
args = get_default_args()
clean(args)
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