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#!/usr/bin/env python
# Copyright (c) 2020 Orange and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
"""
The CNF Conformance program enables interoperability of Cloud native Network
Functions (CNFs) from multiple vendors running on top of Kubernetes supplied by
different vendors [1].
[1] https://github.com/cncf/cnf-testsuite
"""
from __future__ import division
import glob
import logging
import os
import re
import shutil
import subprocess
import time
import yaml
import prettytable
from xtesting.core import testcase
class CNFConformance(testcase.TestCase):
""" Implement CNF Conformance driver.
https://hackmd.io/@vulk/SkY54QnsU
"""
src_dir = '/src/cnf-testsuite'
bin_dir = '/usr/local/bin'
default_tag = 'workload'
__logger = logging.getLogger(__name__)
def __init__(self, **kwargs):
super(CNFConformance, self).__init__(**kwargs)
self.output_log_name = 'functest-kubernetes.log'
self.output_debug_log_name = 'functest-kubernetes.debug.log'
def check_requirements(self):
"""Check if cnf-testsuite is in $PATH"""
if not os.path.exists(os.path.join(self.bin_dir, 'cnf-testsuite')):
self.__logger.warning(
"cnf-testsuite is not compiled for arm and arm64 for the "
"time being")
self.is_skipped = True
def setup(self):
"""Implement initialization and pre-reqs steps"""
if os.path.exists(self.res_dir):
shutil.rmtree(self.res_dir)
os.makedirs(self.res_dir)
shutil.copy2(os.path.join(self.src_dir, 'points.yml'), self.res_dir)
shutil.copy2(
os.path.join(self.src_dir, 'cnf-conformance.yml'), self.res_dir)
os.makedirs(os.path.join(self.res_dir, 'spec/fixtures'))
for cfile in ["chaos_network_loss.yml", "chaos_cpu_hog.yml",
"chaos_container_kill.yml"]:
shutil.copy2(
os.path.join(self.src_dir, 'spec/fixtures', cfile),
os.path.join(self.res_dir, 'spec/fixtures', cfile))
os.chdir(self.res_dir)
cmd = ['cnf-testsuite', 'setup']
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
self.__logger.info("%s\n%s", " ".join(cmd), output.decode("utf-8"))
cmd = ['cnf-testsuite', 'cnf_setup',
'cnf-config=cnf-conformance.yml']
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
self.__logger.info("%s\n%s", " ".join(cmd), output.decode("utf-8"))
def run_conformance(self, **kwargs):
"""Run CNF Conformance"""
cmd = ['cnf-testsuite', kwargs.get("tag", self.default_tag)]
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
self.__logger.info("%s\n%s", " ".join(cmd), output.decode("utf-8"))
lfiles = glob.glob(os.path.join(
self.res_dir, 'results', 'cnf-conformance-results-*.yml'))
results = max(lfiles, key=os.path.getmtime)
with open(os.path.join(self.res_dir, 'results', results)) as yfile:
self.details = yaml.safe_load(yfile)
msg = prettytable.PrettyTable(
header_style='upper', padding_width=5,
field_names=['name', 'status'])
for item in self.details['items']:
msg.add_row([item['name'], item['status']])
self.__logger.info("\n\n%s\n", msg.get_string())
grp = re.search(
r'Final .* score: (\d+) of (\d+)', output.decode("utf-8"))
if grp:
self.result = int(grp.group(1)) / int(grp.group(2)) * 100
shutil.copy2(
os.path.join(self.res_dir, 'results', results), self.res_dir)
def run(self, **kwargs):
""""Running the test with example CNF"""
self.start_time = time.time()
try:
self.setup()
self.run_conformance(**kwargs)
except Exception: # pylint: disable=broad-except
self.__logger.exception("Can not run CNF Conformance")
self.stop_time = time.time()
def clean(self):
cmd = ['cnf-testsuite', 'cnf_cleanup',
'cnf-config=cnf-conformance.yml']
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
self.__logger.info("%s\n%s", " ".join(cmd), output.decode("utf-8"))
shutil.rmtree(os.path.join(self.res_dir, 'tools'), ignore_errors=True)
shutil.rmtree(os.path.join(self.res_dir, 'cnfs'), ignore_errors=True)
shutil.rmtree(
os.path.join(self.res_dir, 'results'), ignore_errors=True)
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