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#
# Copyright 2018 the original author or authors.
#
# 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.
#
"""
vOLT-HA Unicast Test Case module
"""
import time
import testCaseUtils
import logging
import subprocess
import commands
class Unicast(object):
"""
This class implements voltha Unicast test case
"""
PING_TEST_FILENAME = 'voltha_ping_test.log'
TCPDUMP_FILENAME = 'voltha_tcpdump.log'
def __init__(self):
self.dirs = dict()
self.dirs['log'] = None
self.dirs['root'] = None
self.dirs['voltha'] = None
self.__rgName = testCaseUtils.discover_rg_pod_name()
self.__fields = None
self.__tcpdumpPid = None
self.__sadisCTag = None
self.__sadisSTag = None
def u_set_log_dirs(self, root_dir, voltha_dir, log_dir):
testCaseUtils.config_dirs(self, log_dir, root_dir, voltha_dir)
def execute_ping_test(self):
logging.info('Ping 1.2.3.4 IP Test')
process_output = open('%s/%s' % (testCaseUtils.get_dir(self, 'log'), self.PING_TEST_FILENAME), 'w')
pingTest = subprocess.Popen(['/usr/bin/kubectl', 'exec', '-it', '-n', 'voltha', self.__rgName, '--',
'/bin/ping', '-I', 'eth0', '1.2.3.4'],
stdout=process_output,
stderr=process_output)
self.execute_tcpdump()
self.kill_ping_test()
pingTest.wait()
process_output.close()
testCaseUtils.print_log_file(self, self.PING_TEST_FILENAME)
testCaseUtils.print_log_file(self, self.TCPDUMP_FILENAME)
print
def execute_tcpdump(self):
logging.info('Execute tcpdump')
process_output = open('%s/%s' % (testCaseUtils.get_dir(self, 'log'), self.TCPDUMP_FILENAME), 'w')
tcpdump = subprocess.Popen(['sudo', '/usr/sbin/tcpdump', '-nei', 'pon1'],
stdout=process_output,
stderr=process_output)
self.__tcpdumpPid = tcpdump.pid
time.sleep(20)
self.kill_tcpdump()
tcpdump.wait()
process_output.close()
def kill_ping_test(self):
procPidPing1 = subprocess.Popen(['/usr/bin/kubectl', 'exec', '-n', 'voltha', self.__rgName, '--', 'ps', '-ef'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
procPidPing2 = subprocess.Popen(['grep', '-e', '/bin/ping'], stdin=procPidPing1.stdout,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
procPidPing3 = subprocess.Popen(['awk', "{print $2}"], stdin=procPidPing2.stdout,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
procPidPing1.stdout.close()
procPidPing2.stdout.close()
out, err = procPidPing3.communicate()
pingPid = out.strip()
procKillPing = subprocess.Popen(['/usr/bin/kubectl', 'exec', '-n', 'voltha', self.__rgName, '--', 'kill', pingPid],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = procKillPing.communicate()
assert not err, 'Killing Ping returned %s' % err
def kill_tcpdump(self):
procKillTcpdump = subprocess.Popen(['sudo', 'pkill', '-P', str(self.__tcpdumpPid)],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = procKillTcpdump.communicate()
assert not err, 'Killing Tcpdump returned %s' % err
def ping_test_should_have_failed(self):
statusLines = testCaseUtils.get_fields_from_grep_command(self, 'Destination Host Unreachable', self.PING_TEST_FILENAME)
assert statusLines, 'Ping Test Issue, no Destination Host Unreachable'
lineCount = 0
lines = statusLines.splitlines()
for line in lines:
logging.debug(line)
lineCount += 1
if lineCount > 1: # Must have 2 or more instances
return True
def stag_and_ctag_should_match_sadis_entry(self):
logging.info('Evaluating sTag and cTag in each packet')
statusLines = testCaseUtils.get_fields_from_grep_command(self, '802.1Q', self.TCPDUMP_FILENAME)
assert statusLines, 'tcpdump contains no 802.1Q tagged packets'
lines = statusLines.splitlines()
for line in lines:
header, tagId, after = line.partition('802.1Q')
self.__fields = testCaseUtils.parse_fields(after, ',')
stag = self.__fields[1].strip().split(':')[1].strip().split()[1].strip()
before, tagId, after = line.rpartition('802.1Q')
self.__fields = testCaseUtils.parse_fields(after, ',')
ctag = self.__fields[1].strip().split()[1].strip()
self.stag_and_ctag_should_match_sadis_file(ctag, stag)
def should_have_q_in_q_vlan_tagging(self):
statusLines = testCaseUtils.get_fields_from_grep_command(self, '"Request who-has"', self.TCPDUMP_FILENAME)
assert statusLines, 'tcpdump contains no ping packets'
lines = statusLines.splitlines()
for line in lines:
tagCount = line.count('802.1Q')
assert tagCount == 2, 'Found a non double tagged packet'
def retrieve_stag_and_ctag_from_sadis_entries(self):
logging.info('Retrieving sTag and cTag from Sadis entries')
ctagGrepCommand = "grep %s %s/tests/atests/build/sadis_json" % ('cTag', testCaseUtils.get_dir(self, 'voltha'))
statusLines = commands.getstatusoutput(ctagGrepCommand)[1]
assert statusLines, 'No cTag found in sadis_json'
self.__sadisCTag = statusLines.split(':')[1].strip(',')
stagGrepCommand = "grep %s %s/tests/atests/build/sadis_json" % ('sTag', testCaseUtils.get_dir(self, 'voltha'))
statusLines = commands.getstatusoutput(stagGrepCommand)[1]
assert statusLines, 'No sTag found in sadis_json'
self.__sadisSTag = statusLines.split(':')[1].strip(',')
def stag_and_ctag_should_match_sadis_file(self, ctag, stag):
assert ctag == self.__sadisCTag and stag == self.__sadisSTag, 'cTag and/or sTag do not match value in sadis file\n \
vlan cTag = %s, sadis cTag = %s : vlan sTag = %s, sadis sTag = %s' % (ctag, self.__sadisCTag, stag, self.__sadisSTag)
def run_test(root_dir, voltha_dir, log_dir):
unicast = Unicast()
unicast.u_set_log_dirs(root_dir, voltha_dir, log_dir)
unicast.execute_ping_test()
unicast.should_have_q_in_q_vlan_tagging()
unicast.retrieve_stag_and_ctag_from_sadis_entries()
unicast.stag_and_ctag_should_match_sadis_entry()