def start_single_website_flow(ssh_client, exp, stack, url, duration):
# filename = os.path.basename(url)
filename = "temp_donw" #tmp file name
print(filename)
if filename.strip() == '':
logging.warning('Could not get filename from URL')
# start_flow_cmd = 'timeout {}s wget --no-check-certificate --no-cache --delete-after --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ {} || rm -f /tmp/{}.tmp*'.format(duration+5, exp.server.ip_lan, url, filename)
start_flow_cmd = 'timeout {}s wget --no-check-certificate --no-cache --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ {} || rm -f /tmp/{}.tmp*'.format(duration+5, exp.server.ip_lan, url, filename)
# start_flow_cmd = 'curl --interface {} -L -H "Cache-Control: no-cache" {} -o {} || rm -f /tmp/{}.tmp*'.format(exp.server.ip_lan, url, filename, filename)
# start_flow_cmd = 'wget --no-check-certificate --no-cache --delete-after --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ {} || rm -f /tmp/{}.tmp*'.format(exp.server.ip_lan, url, filename)
print("start_flow_cmd>>",start_flow_cmd)
# won't return until flow is done
flow_start_time = time.time()
exp.logs['ssl_key_log'] = '/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log'.format(exp.name, exp.exp_time)
ssl_key_log_cmd = 'export SSLKEYLOGFILE=/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log'.format(exp.name, exp.exp_time)
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, ssl_key_log_cmd) #This is to decrypt traffic
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, 'source /etc/environment')
# process = subprocess.Popen([start_flow_cmd])
# p1 = subprocess.call(start_flow_cmd)
# stdout = None
print("Just before starting>", flow_start_time)
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, start_flow_cmd)
print("Just after starting>", time.time())
# exit_status = stdout.channel.recv_exit_status()
# exit_status = stdout.channel.recv_exit_status()
# print(stdout)
return ssh_client, stdout, flow_start_time
def clean_tcpdump(exp):
logging.info('Making sure tcpdump is cleaned up ')
with cctestbed.get_ssh_client(
exp.server.ip_wan,
username=exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
'sudo pkill -9 tcpdump')
def start_apache_server(flow):
# start apache server which is running on the cctestbed-client
with cctestbed.get_ssh_client(
flow.client.ip_wan,
flow.client.username,
key_filename=flow.client.key_filename) as ssh_client:
# start_apache_cmd = "sudo service apache2 start"
start_apache_cmd = "source /etc/environment ; sudo /tmp/ruk/loc/bin/apachectl -k start"
cctestbed.exec_command(ssh_client, flow.client.ip_wan,
start_apache_cmd)
def update_apache_config(host_client, server_port):
#Add listener ports to config file
print("update httpd.conf with listener port > ", server_port)
# cmd = 'ssh -o StrictHostKeyChecking=no cctestbed-client "echo $"Listen {}:{}\n" | sudo tee -a /tmp/ruk/loc/conf/httpd.conf"'.format(host_client.ip_lan, server_port)
# proc = subprocess.run(cmd, shell=True)
with cctestbed.get_ssh_client(
host_client.ip_wan,
host_client.username,
key_filename=host_client.key_filename) as ssh_client:
cmd = 'echo Listen {}:{} | sudo tee -a /tmp/ruk/loc/conf/httpd.conf'.format(
host_client.ip_lan, server_port)
cctestbed.exec_command(ssh_client, host_client.ip_wan, cmd)
def add_route(exp, url_ip, video_url_ip, gateway_ip=None):
with cctestbed.get_ssh_client(
exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
if gateway_ip is None:
gateway_ip = exp.client.ip_lan
add_route_cmd1 = 'sudo route add {} gw {}'.format(url_ip, gateway_ip)
print("Route command :", add_route_cmd1)
cctestbed.exec_command(ssh_client, exp.server.ip_wan, add_route_cmd1)
#Add route for video data
add_route_cmd2 = 'sudo route add {} gw {}'.format(
video_url_ip, gateway_ip)
print("Route command :", add_route_cmd2)
cctestbed.exec_command(ssh_client, exp.server.ip_wan, add_route_cmd2)
try:
yield
finally:
with cctestbed.get_ssh_client(
exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
del_route_cmd1 = 'sudo route del {}'.format(url_ip)
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
del_route_cmd1)
del_route_cmd2 = 'sudo route del {}'.format(video_url_ip)
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
del_route_cmd2)
def add_dnat_rule(exp, url_ip, video_url_ip):
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
print("NAT source {} destination {}", url_ip, exp.server.ip_lan)
dnat_rule_cmd1 = 'sudo iptables -t nat -A PREROUTING -i enp1s0f0 --source {} -j DNAT --to-destination {}'.format(
url_ip, exp.server.ip_lan)
print("NAT IP {}", exp.server_nat_ip)
cctestbed.exec_command(ssh_client, exp.server_nat_ip, dnat_rule_cmd1)
#Add rule for video data
print("NAT source {} destination {}", video_url_ip, exp.server.ip_lan)
dnat_rule_cmd2 = 'sudo iptables -t nat -A PREROUTING -i enp1s0f0 --source {} -j DNAT --to-destination {}'.format(
video_url_ip, exp.server.ip_lan)
print("Video NAT IP {}", exp.server_nat_ip)
cctestbed.exec_command(ssh_client, exp.server_nat_ip, dnat_rule_cmd2)
try:
yield
finally:
# remove DNAT rule once down with this context
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
# TODO: remove hard coding of the ip addr here
dnat_delete_cmd = 'sudo iptables -t nat --delete PREROUTING 1'
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
dnat_delete_cmd)
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
dnat_delete_cmd)
def start_single_web_video_flow(exp, stack, url, duration):
with cctestbed.get_ssh_client(exp.server.ip_wan, exp.server.username, key_filename=exp.server.key_filename) as ssh_client:
# start_flow_cmd = 'timeout {}s /tmp/chrome-linux/chrome --headless --ssl-key-log-file=/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log --remote-debugging-port=9222 --autoplay-policy=no-user-gesture-required --window-size={},{} --start-maximized {}'.format(duration+5, exp.name, exp.exp_time, 1920, 1080, url)
start_flow_cmd = 'timeout {}s google-chrome --headless --flag-switches-begin --disable-quic --flag-switches-end --ssl-key-log-file=/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log --remote-debugging-port=9222 --autoplay-policy=no-user-gesture-required --window-size={},{} --start-maximized {}'.format(duration+5, exp.name, exp.exp_time, 3840, 2160, url)
print("start_flow_cmd>>",start_flow_cmd)
# won't return until flow is done
flow_start_time = time.time()
exp.logs['ssl_key_log'] = '/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log'.format(exp.name, exp.exp_time)
ssl_key_log_cmd = 'export SSLKEYLOGFILE=/users/rukshani/SSLkeylogs/sslkeylog-{}-{}.log'.format(exp.name, exp.exp_time)
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, ssl_key_log_cmd) #This is to decrypt traffic
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, 'source /etc/environment')
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, start_flow_cmd)
# exit_status = stdout.channel.recv_exit_status()
return (stdout, flow_start_time)
def set_env_with_congestion(host_client, env_ccas_with_ports):
#Set an environment variable with ports and their respective ccas
# os.environ["APACHE_CCA_PORTS"] = env_ccas_with_ports
# print(os.environ["APACHE_CCA_PORTS"])
cmd = 'echo APACHE_CCA_PORTS={} | sudo tee -a /etc/environment'.format(
env_ccas_with_ports)
# cmd = 'sudo sh -c echo APACHE_CCA_PORTS={} >> /etc/environment'.format(env_ccas_with_ports)
cmd = cmd + " ; source /etc/environment ; export APACHE_CCA_PORTS"
print("running cmd >", cmd)
with cctestbed.get_ssh_client(
host_client.ip_wan,
host_client.username,
key_filename=host_client.key_filename) as ssh_client:
cctestbed.exec_command(ssh_client, host_client.ip_wan, cmd)
def add_dns_rule(exp, website, url_ip):
with cctestbed.get_ssh_client(exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
add_dns_cmd = "echo '{} {}' | sudo tee -a /etc/hosts".format(url_ip, website)
cctestbed.exec_command(ssh_client, exp.server.ip_wan, add_dns_cmd)
try:
yield
finally:
with cctestbed.get_ssh_client(exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
# will delete last line of /etc/hosts file
# TODO: should probs check that it's the line we want to delete
del_dns_cmd = "sudo sed -i '$ d' /etc/hosts"
cctestbed.exec_command(ssh_client, exp.server.ip_wan, del_dns_cmd)
def add_route(exp, url_ip, gateway_ip=None):
with cctestbed.get_ssh_client(exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
if gateway_ip is None:
gateway_ip = exp.client.ip_lan
add_route_cmd = 'sudo route add {} gw {}'.format(url_ip, gateway_ip)
cctestbed.exec_command(ssh_client, exp.server.ip_wan, add_route_cmd)
try:
yield
finally:
with cctestbed.get_ssh_client(exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
del_route_cmd = 'sudo route del {}'.format(url_ip)
cctestbed.exec_command(ssh_client, exp.server.ip_wan, del_route_cmd)
def add_dnat_rule(exp, url_ip):
print('exp.server_nat_ip>', exp.server_nat_ip)
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
dnat_rule_cmd = 'sudo iptables -t nat -A POSTROUTING --source {} -o enp1s0f0 -j SNAT --to {} && sudo iptables -t nat -A PREROUTING -i enp1s0f0 --source {} -j DNAT --to-destination {}'.format(
HOST_SERVER.ip_lan, HOST_CLIENT.ip_wan, url_ip, exp.server.ip_lan)
print("dnat_rule_cmd>>", dnat_rule_cmd)
cctestbed.exec_command(ssh_client, exp.server_nat_ip, dnat_rule_cmd)
try:
yield
finally:
# remove DNAT rule once down with this context
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
# TODO: remove hard coding of the ip addr here
dnat_delete_cmd = 'sudo iptables -t nat --delete PREROUTING 1 && sudo iptables -t nat --delete POSTROUTING 1'
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
dnat_delete_cmd)
def add_dnat_rule(exp, url_ip):
print("Server NAT IP:Username:keyfilename>>", exp.server_nat_ip,
exp.server.username, exp.server.key_filename)
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
dnat_rule_cmd = 'sudo iptables -t nat -A PREROUTING -i enp1s0f0 --source {} -j DNAT --to-destination {}'.format(
url_ip, exp.server.ip_lan)
print('dnat_rule_cmd:', dnat_rule_cmd)
cctestbed.exec_command(ssh_client, exp.server_nat_ip, dnat_rule_cmd)
try:
yield
finally:
# remove DNAT rule once down with this context
with cctestbed.get_ssh_client(exp.server_nat_ip, exp.server.username,
exp.server.key_filename) as ssh_client:
# TODO: remove hard coding of the ip addr here
dnat_delete_cmd = 'sudo iptables -t nat --delete PREROUTING 1'
cctestbed.exec_command(ssh_client, exp.server.ip_wan,
dnat_delete_cmd)
def start_single_local_website_flow(ssh_client, flow, experiment, stack):
web_download_cmd = 'wget --quiet --background --span-hosts --no-cache --delete-after --bind-address {} -P /tmp/ "http://{}:{}/www.nytimes.com"'.format(experiment.server.ip_lan, experiment.client.ip_lan, flow.server_port)
# web_download_cmd = 'wget --quiet --background --span-hosts --no-cache --bind-address {} -P /tmp/ "http://{}:{}/www.nytimes.com"'.format(experiment.server.ip_lan, experiment.client.ip_lan, flow.server_port)
print("web_download_cmd>", web_download_cmd)
# start_download = cctestbed.RemoteCommand(
# web_download_cmd,
# experiment.server.ip_wan,
# username=experiment.server.username,
# key_filename=experiment.server.key_filename,
# pgrep_string='http://{}:{}/www.nytimes.com'.format(
# experiment.client.ip_lan, flow.server_port))
# stack.enter_context(start_download())
# return start_download
_, stdout, _ = cctestbed.exec_command(ssh_client, experiment.server.ip_wan, web_download_cmd)
return ssh_client, stdout
def stop_local_server_and_cleanup(exp):
print("stop_local_server_and_cleanup")
flow = exp.flows[0] #TODO:Pick a local website or local video service flow
with cctestbed.get_ssh_client(
flow.client.ip_wan,
flow.client.username,
key_filename=flow.client.key_filename) as ssh_client:
stop_apache_cmd = "sudo /tmp/ruk/loc/bin/apachectl -k stop"
unset_env_var = "unset APACHE_CCA_PORTS"
remove_listener_ports = "cd /tmp/ruk/loc/conf && sed -i.bak '/^Listen/d' httpd.conf"
cctestbed.exec_command(ssh_client, flow.client.ip_wan, stop_apache_cmd)
cctestbed.exec_command(ssh_client, flow.client.ip_wan, unset_env_var)
cctestbed.exec_command(ssh_client, flow.client.ip_wan,
remove_listener_ports)
def run_experiment(website, url, btlbw=10, queue_size=128, rtt=35, force=False):
experiment_name = '{}bw-{}rtt-{}q-{}'.format(btlbw, rtt, queue_size, website)
if not force and is_completed_experiment(experiment_name):
return (None, '')
logging.info('Creating experiment for website: {}'.format(website))
url_ip = get_website_ip(url)
logging.info('Got website IP: {}'.format(url_ip))
website_rtt = int(float(get_nping_rtt(url_ip)))
logging.info('Got website RTT: {}'.format(website_rtt))
if website_rtt >= rtt:
logging.warning('Skipping experiment with website RTT {} >= {}'.format(
website_rtt, rtt))
return (-1, '')
client = HOST_CLIENT_TEMPLATE
client['ip_wan'] = url_ip
client = cctestbed.Host(**client)
server = HOST_SERVER
server_nat_ip = HOST_CLIENT.ip_wan #'128.104.222.182' taro
server_port = 5201
client_port = 5555
flow = {'ccalg': 'reno',
'end_time': 60,
'rtt': rtt - website_rtt,
'start_time': 0}
flows = [cctestbed.Flow(ccalg=flow['ccalg'], start_time=flow['start_time'],
end_time=flow['end_time'], rtt=flow['rtt'],
server_port=server_port, client_port=client_port,
client_log=None, server_log=None, kind='website',
client=client)]
exp = cctestbed.Experiment(name=experiment_name,
btlbw=btlbw,
queue_size=queue_size,
flows=flows, server=server, client=client,
config_filename='experiments-all-ccalgs-aws.yaml',
server_nat_ip=server_nat_ip)
logging.info('Running experiment: {}'.format(exp.name))
# make sure tcpdump cleaned up
logging.info('Making sure tcpdump is cleaned up')
with cctestbed.get_ssh_client(
exp.server.ip_wan,
username=exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
cctestbed.exec_command(
ssh_client,
exp.client.ip_wan,
'sudo pkill -9 tcpdump')
with ExitStack() as stack:
# add DNAT rule
stack.enter_context(add_dnat_rule(exp, url_ip))
# add route to URL
stack.enter_context(add_route(exp, url_ip))
# add dns entry
stack.enter_context(add_dns_rule(exp, website, url_ip))
exp._run_tcpdump('server', stack)
# run the flow
# turns out there is a bug when using subprocess and Popen in Python 3.5
# so skip ping needs to be true
# https://bugs.python.org/issue27122
cctestbed.stop_bess()
stack.enter_context(exp._run_bess(ping_source='server', skip_ping=False))
# give bess some time to start
time.sleep(5)
exp._show_bess_pipeline()
stack.enter_context(exp._run_bess_monitor())
stack.enter_context(exp._run_rtt_monitor())
with cctestbed.get_ssh_client(exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
filename = os.path.basename(url)
if filename.strip() == '':
logging.warning('Could not get filename from URL')
start_flow_cmd = 'timeout 65s wget --no-check-certificate --no-cache --delete-after --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ "{}" || rm -f /tmp/{}.tmp*'.format(exp.server.ip_lan, url, filename)
# won't return until flow is done
flow_start_time = time.time()
_, stdout, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan, start_flow_cmd)
exit_status = stdout.channel.recv_exit_status()
flow_end_time = time.time()
logging.info('Flow ran for {} seconds'.format(flow_end_time - flow_start_time))
exp._show_bess_pipeline()
cmd = '/opt/bess/bessctl/bessctl command module queue0 get_status EmptyArg'
print(cctestbed.run_local_command(cmd))
logging.info('Dumping website data to log: {}'.format(exp.logs['website_log']))
with open(exp.logs['website_log'], 'w') as f:
website_info = {}
website_info['website'] = website
website_info['url'] = url
website_info['website_rtt'] = website_rtt
website_info['url_ip'] = url_ip
website_info['flow_runtime'] = flow_end_time - flow_start_time
json.dump(website_info, f)
if exit_status != 0:
if exit_status == 124: # timeout exit status
print('Timeout. Flow longer than 65s.')
logging.warning('Timeout. Flow longer than 65s.')
else:
logging.error(stdout.read())
raise RuntimeError('Error running flow.')
proc = exp._compress_logs_url()
return (proc, '{}-{}'.format(experiment_name, exp.exp_time))
def run_experiment(website1,
url1,
website2,
url2,
btlbw=10,
queue_size=128,
rtt=35,
force=False):
experiment_name = '{}bw-{}rtt-{}q-{}-{}'.format(btlbw, rtt, queue_size,
website1, website2)
if not force and is_completed_experiment(experiment_name):
return
else:
if ran_experiment_today(experiment_name):
return
logging.info('Creating experiment for website1: {} website2: {}'.format(
website1, website2))
url_ip1 = get_website_ip(url1)
url_ip2 = get_website_ip(url2)
logging.info('Got website1 IP: {} website2 IP: {}'.format(
url_ip1, url_ip2))
website_rtt1 = int(float(get_nping_rtt(url_ip1)))
website_rtt2 = int(float(get_nping_rtt(url_ip2)))
logging.info('Got website1 RTT: {} website2 RTT: {}'.format(
website_rtt1, website_rtt2))
if website_rtt1 >= rtt:
logging.warning(
'Skipping experiment with website1 RTT {} >= {}'.format(
website_rtt1, rtt))
return -1
elif website_rtt2 >= rtt:
logging.warning(
'Skipping experiment with website2 RTT {} >= {}'.format(
website_rtt2, rtt))
return -1
client = HOST_CLIENT_TEMPLATE
# TODO: Which IP should be used for client?
client['ip_wan'] = url_ip1
client = cctestbed.Host(**client)
server = HOST_SERVER
server_nat_ip = HOST_CLIENT.ip_wan #'128.104.222.182' taro
server_port = 5201
client_port = 5555
flow1 = {
'ccalg': 'reno',
'end_time': 60,
'rtt': rtt - website_rtt1,
'start_time': 0
}
flow2 = {
'ccalg': 'reno',
'end_time': 60,
'rtt': rtt - website_rtt2,
'start_time': 0
}
flows = [
cctestbed.Flow(ccalg=flow1['ccalg'],
start_time=flow1['start_time'],
end_time=flow1['end_time'],
rtt=flow1['rtt'],
server_port=server_port,
client_port=client_port,
client_log=None,
server_log=None),
cctestbed.Flow(ccalg=flow2['ccalg'],
start_time=flow2['start_time'],
end_time=flow2['end_time'],
rtt=flow2['rtt'],
server_port=server_port,
client_port=client_port,
client_log=None,
server_log=None),
]
exp = cctestbed.Experiment(
name=experiment_name,
btlbw=btlbw,
queue_size=queue_size,
flows=flows,
server=server,
client=client,
config_filename='experiments-all-ccalgs-aws.yaml',
server_nat_ip=server_nat_ip)
logging.info('Running experiment: {}'.format(exp.name))
# make sure tcpdump cleaned up
logging.info('Making sure tcpdump is cleaned up')
with cctestbed.get_ssh_client(
exp.server.ip_wan,
username=exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
cctestbed.exec_command(ssh_client, exp.client.ip_wan,
'sudo pkill -9 tcpdump')
with ExitStack() as stack:
# add DNAT rule
stack.enter_context(add_dnat_rule(exp, url_ip1))
stack.enter_context(add_dnat_rule(exp, url_ip2))
# add route to URL
stack.enter_context(add_route(exp, url_ip1))
stack.enter_context(add_route(exp, url_ip2))
# add dns entry
stack.enter_context(add_dns_rule(exp, website1, url_ip1))
stack.enter_context(add_dns_rule(exp, website2, url_ip2))
exp._run_tcpdump('server', stack)
# run the flow
# turns out there is a bug when using subprocess and Popen in Python 3.5
# so skip ping needs to be true
# https://bugs.python.org/issue27122
cctestbed.stop_bess()
stack.enter_context(
exp._run_bess(ping_source='server', skip_ping=False))
# give bess some time to start
time.sleep(5)
exp._show_bess_pipeline()
stack.enter_context(exp._run_bess_monitor())
stack.enter_context(exp._run_rtt_monitor())
with cctestbed.get_ssh_client(
exp.server.ip_wan,
exp.server.username,
key_filename=exp.server.key_filename) as ssh_client:
filename1 = os.path.basename(url1)
filename2 = os.path.basename(url2)
if filename1.strip() == '':
logging.warning('Could not get filename from URL 1')
if filename2.strip() == '':
logging.warning('Could not get filename from URL 2')
# Start first flow in background and second in foreground
start_flow_cmd1 = 'timeout 65s wget --no-cache --delete-after --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ {} || rm -f /tmp/{}.tmp* &'.format(
exp.server.ip_lan, url1, filename1)
start_flow_cmd2 = 'timeout 65s wget --no-cache --delete-after --connect-timeout=10 --tries=3 --bind-address {} -P /tmp/ {} || rm -f /tmp/{}.tmp*'.format(
exp.server.ip_lan, url2, filename2)
# won't return until flow is done
flow_start_time = time.time()
_, _, _ = cctestbed.exec_command(ssh_client, exp.server.ip_wan,
start_flow_cmd1)
_, stdout, _ = cctestbed.exec_command(ssh_client,
exp.server.ip_wan,
start_flow_cmd2)
exit_status = stdout.channel.recv_exit_status()
flow_end_time = time.time()
logging.info('Flow ran for {} seconds'.format(flow_end_time -
flow_start_time))
exp._show_bess_pipeline()
cmd = '/opt/bess/bessctl/bessctl command module queue0 get_status EmptyArg'
print(cctestbed.run_local_command(cmd))
if exit_status != 0:
if exit_status == 124: # timeout exit status
print('Timeout. Flow longer than 65s.')
logging.warning('Timeout. Flow longer than 65s.')
else:
logging.error(stdout.read())
raise RuntimeError('Error running flow.')
proc = exp._compress_logs_url()
return (proc, exp.tar_filename, experiment_name)
