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import unittest
import sh
import json
import time
class Qethernet(unittest.TestCase):
__serverip = None
__numbytestx = None
__bwexpected = None
__port = None
params = None
__bwreal = None
__resultlist = None # resultlist is a python list of python dictionaries
timebetweenattempts = 5
# varlist content: serverip, bwexpected, port
def __init__(self, testname, testfunc, varlist):
# save the parameters list
self.params = varlist
# configure the function to be executed when the test runs. "testfunc" is a name of a method inside this
# class, that in this situation, it can only be "execute".
super(Qethernet, self).__init__(testfunc)
# validate and get the parameters
if "serverip" in varlist:
self.__serverip = varlist["serverip"]
else:
raise Exception('sip param inside Qethernet have been be defined')
if "bwexpected" in varlist:
self.__bwexpected = varlist["bwexpected"]
else:
raise Exception('bwexpected param inside Qethernet must be defined')
if "port" in varlist:
self.__port = varlist["port"]
else:
raise Exception('port param inside Qethernet must be defined')
self.__numbytestx = "10M"
self._testMethodDoc = testname
self.__resultlist = []
def execute(self):
# execute iperf command against the server, but it implements attempts in case the server is busy
iperfdone = False
while not iperfdone:
try:
p = sh.iperf3("-c", self.__serverip, "-n", self.__numbytestx, "-f", "m", "-p", self.__port, "-J",
_timeout=20)
iperfdone = True
except sh.TimeoutException:
self.fail("failed: iperf timeout reached")
except sh.ErrorReturnCode:
time.sleep(self.timebetweenattempts)
# check if it was executed succesfully
if p.exit_code == 0:
if p.stdout == "":
self.fail("failed: error executing iperf command")
# analyze output string
data = json.loads(p.stdout.decode('ascii'))
self.__bwreal = float(data['end']['sum_received']['bits_per_second'])/1024/1024
# save result file
with open('/mnt/station_ramdisk/ethernet-iperf3.json', 'w') as outfile:
json.dump(data, outfile, indent=4)
outfile.close()
self.__resultlist.append(
{
"description": "iperf3 output",
"filepath": "/mnt/station_ramdisk/ethernet-iperf3.json",
"mimetype": "application/json"
}
)
# check if BW is in the expected range
if self.__bwreal < float(self.__bwexpected):
self.fail("failed: speed is lower than spected. Speed(Mbits/s): " + str(self.__bwreal))
else:
self.fail("failed: could not complete iperf command.")
def getresults(self):
return self.__resultlist
def gettextresult(self):
return ""
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