def start_network():
if network_running():
logging.getLogger(__name__).info('Some network components already running...')
stop_network()
logging.getLogger(__name__).info('Starting simulated network...')
# Create fake NICs
logging.getLogger(__name__).info('Creating network interfaces...')
autogen_click_conf(get_topo_file('servers'), get_topo_file('clients'), get_topo_file('dns'))
run_bg('%s %s' % (CLICK, CLICK_CONF))
# Set up traffic shaping
logging.getLogger(__name__).info('Enabling traffic shaping...')
try:
check_output('%s start' % TC_SETUP)
install_filters(get_topo_file('bottlenecks'))
except Exception as e:
logging.getLogger(__name__).error(e)
# Launch apache instances
logging.getLogger(__name__).info('Configuring apache...')
try:
configure_apache(get_server_ip_list())
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
logging.getLogger(__name__).info('Network started.')
def stop_network():
logging.getLogger(__name__).info('Stopping simulated network...')
# stop apache instances
logging.getLogger(__name__).info('Stopping apache...')
try:
reset_apache(get_server_ip_list())
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
# Stop traffic shaping
logging.getLogger(__name__).info('Disabling traffic shaping...')
try:
check_output('%s stop' % TC_SETUP)
except Exception as e:
logging.getLogger(__name__).error(e)
# Destroy fake NICs
logging.getLogger(__name__).info('Destroying network interfaces...')
try:
check_both('killall -9 click', shouldPrint=False)
time.sleep(0.1)
except:
pass
logging.getLogger(__name__).info('Network stopped.')
def stop_network():
logging.getLogger(__name__).info('Stopping simulated network...')
# stop apache instances
logging.getLogger(__name__).info('Stopping apache...')
try:
reset_apache(get_server_ip_list())
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
# Stop traffic shaping
logging.getLogger(__name__).info('Disabling traffic shaping...')
try:
check_output('%s stop' % TC_SETUP)
except Exception as e:
logging.getLogger(__name__).error(e)
# Destroy fake NICs
logging.getLogger(__name__).info('Destroying network interfaces...')
try:
check_both('killall -9 click', shouldPrint=False)
time.sleep(0.1)
except:
pass
logging.getLogger(__name__).info('Network stopped.')
def start_network():
if network_running():
logging.getLogger(__name__).info("Some network components already running...")
stop_network()
logging.getLogger(__name__).info("Starting simulated network...")
# Create fake NICs
logging.getLogger(__name__).info("Creating network interfaces...")
autogen_click_conf(get_topo_file("servers"), get_topo_file("clients"), get_topo_file("dns"))
if os.path.isfile(CLICK):
run_bg("%s %s" % (CLICK, CLICK_CONF))
else:
run_bg("%s %s" % (CLICK_LOCAL, CLICK_CONF))
# Set up traffic shaping
logging.getLogger(__name__).info("Enabling traffic shaping...")
try:
check_output("%s start" % TC_SETUP)
install_filters(get_topo_file("bottlenecks"))
except Exception as e:
logging.getLogger(__name__).error(e)
# Launch apache instances
logging.getLogger(__name__).info("Configuring apache...")
try:
configure_apache(get_server_ip_list())
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
logging.getLogger(__name__).info("Network started.")
def start_network():
if network_running():
logging.getLogger(__name__).info(
'Some network components already running...')
stop_network()
logging.getLogger(__name__).info('Starting simulated network...')
# Create fake NICs
logging.getLogger(__name__).info('Creating network interfaces...')
autogen_click_conf(get_topo_file('servers'), get_topo_file('clients'),
get_topo_file('dns'))
if os.path.isfile(CLICK):
run_bg('sudo {} {}'.format(CLICK, CLICK_CONF))
else:
run_bg('sudo %s %s' % (CLICK_LOCAL, CLICK_CONF))
# Set up traffic shaping
logging.getLogger(__name__).info('Enabling traffic shaping...')
try:
check_output('%s start' % TC_SETUP)
install_filters(get_topo_file('bottlenecks'))
except Exception as e:
logging.getLogger(__name__).error(e)
# Launch apache instances
logging.getLogger(__name__).info('Configuring apache...')
try:
configure_apache(get_server_ip_list())
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
import traceback
traceback.print_exc()
logging.getLogger(__name__).info('Network started.')
def start_servers():
if servers_running():
logging.getLogger(__name__).info('Some components already running...')
stop_servers()
logging.getLogger(__name__).info('Starting servers...')
# Launch apache instances
logging.getLogger(__name__).info('Configuring apache...')
if args.topology == 'servers':
with open(args.servers) as servers_file:
for line in strip_comments(servers_file):
servers.append('127.0.0.1:%d' % int(line))
servers_port.append(int(line))
servers_file.closed
try:
configure_apache(servers)
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
else:
if args.topology == 'onelink':
try:
configure_apache(['127.0.0.1:8080'])
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
else:
try:
configure_apache(['127.0.0.1:8080', '127.0.0.1:8081'])
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
# Create click bandwidth shaper
logging.getLogger(__name__).info('Creating bandwidth shaper...')
autogen_click()
run_bg('click %s.click' % args.topology)
logging.getLogger(__name__).info('Network started.')
def stop_servers():
logging.getLogger(__name__).info('Stopping simulated network...')
# stop apache instances
logging.getLogger(__name__).info('Stopping apache...')
if args.topology == 'servers':
servers = []
with open(args.servers) as servers_file:
for line in strip_comments(servers_file):
servers.append(int(line))
servers_file.closed
try:
reset_apache(servers)
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
else:
if args.topology == 'onelink':
try:
reset_apache(['127.0.0.1:8080'])
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
else:
try:
reset_apache(['127.0.0.1:8080', '127.0.0.1:8081'])
restart_apache()
except Exception as e:
logging.getLogger(__name__).error(e)
# Destroy fake NICs
logging.getLogger(__name__).info('Destroying bandwidth shaper...')
try:
check_both('killall -9 click', shouldPrint=False)
time.sleep(0.1)
except:
pass
logging.getLogger(__name__).info('Network stopped.')
