def clean(self, clean_options):
if self.clean_needed(clean_options):
if self.servers:
for server in self.servers:
try:
LOG.info('Deleting instance %s...', server.name)
self.nova_client.servers.delete(server.id)
except Exception:
LOG.exception("Instance %s deletion failed",
server.name)
LOG.info(' Waiting for %d instances to be fully deleted...',
len(self.servers))
retry_count = 15 + len(self.servers) * 5
while True:
retry_count -= 1
self.servers = [
server for server in self.servers
if self.instance_exists(server)
]
if not self.servers:
break
if retry_count:
LOG.info(
' %d yet to be deleted by Nova, retries left=%d...',
len(self.servers), retry_count)
time.sleep(2)
else:
LOG.warning(
' instance deletion verification time-out: %d still not deleted',
len(self.servers))
break
def clean(self, clean_options):
if self.clean_needed(clean_options):
if self.flavor:
LOG.info("Deleting flavor %s...", self.flavor.name)
try:
self.flavor.delete()
except Exception:
LOG.exception("Flavor deletion failed")
def _collect_node_info_v1_1(node):
svc = _read_svc_tmpl('svc_node.json', node.name)
url = 'http://{}:12305/api/v1.1/machine'.format(node.name)
try:
resp, content = _post_dict(url, svc)
LOG.debug(resp, content)
if resp.status != 200:
LOG.warning('Post failed <{}>'.format(node.name))
return
except Exception as e:
LOG.warning('Post failed <{}>'.format(e.message))
LOG.exception(e)
return
node_json = json.loads(content)
node_json['mem_request_used'] = node.mem_request_used
push_node_status('nodes', node.name, node_json, version=1.1)
def on_message(self, message):
# LOG.debug(message)
try:
deserialized_message = Message.deserialize(message)
except:
return
try:
self.emitter.emit(deserialized_message.type, deserialized_message)
except Exception as e:
LOG.exception(e)
traceback.print_exc(file=sys.stdout)
pass
for client in client_connections:
client.write_message(message)
def clean(self, clean_options):
if self.clean_needed(clean_options):
for port in self.ports:
LOG.info("Deleting port %s...", port['id'])
try:
self.neutron_client.delete_port(port['id'])
except Exception:
LOG.exception("Port deletion failed")
# associated subnets are automatically deleted by neutron
for net in self.networks:
LOG.info("Deleting network %s...", net['name'])
try:
self.neutron_client.delete_network(net['id'])
except Exception:
LOG.exception("Network deletion failed")
def close(self):
"""Close this instance of chain runner and delete resources if applicable."""
try:
if not self.config.no_cleanup:
LOG.info('Cleaning up...')
if self.chain_manager:
self.chain_manager.delete()
else:
LOG.info('Clean up skipped.')
try:
self.traffic_client.close()
except Exception:
LOG.exception()
if self.stats_manager:
self.stats_manager.close()
except Exception:
LOG.exception('Cleanup not finished')
def run(self, host, port):
# app.run will not return so we need to run it in a background thread so that
# the calling thread (main thread) can keep doing work
Thread(target=self.app.run, args=(host, port)).start()
# wait for run requests
# the runner must be executed from the main thread (Trex client library requirement)
while True:
# print 'main thread waiting for requests...'
config = Ctx.dequeue()
# print 'main thread processing request...'
# print config
try:
# remove unfilled values as we do not want them to override default values with None
config = {k: v for k, v in config.items() if v is not None}
with RunLock():
if self.fluent_logger:
self.fluent_logger.start_new_run()
results = self.nfvbench_runner.run(config, config)
except Exception as exc:
results = result_json(STATUS_ERROR, str(exc))
LOG.exception('NFVbench runner exception:')
# this might overwrite a previously unfetched result
Ctx.set_result(results)
try:
summary = NFVBenchSummarizer(results['result'],
self.fluent_logger)
LOG.info(str(summary))
except KeyError:
# in case of error, 'result' might be missing
if 'error_message' in results:
LOG.error(results['error_message'])
else:
LOG.error(
'REST request completed without results or error message'
)
Ctx.release()
if self.fluent_logger:
self.fluent_logger.send_run_summary(True)
def clean(self, clean_options):
if self.clean_needed(clean_options):
# associated routes needs to be deleted before deleting routers
for rtr in self.routers:
LOG.info("Deleting routes for %s...", rtr['name'])
try:
body = {'router': {'routes': []}}
self.neutron_client.update_router(rtr['id'], body)
except Exception:
LOG.exception("Router routes deletion failed")
LOG.info("Deleting ports for %s...", rtr['name'])
try:
for port in self.ports:
body = {'port_id': port['id']}
self.neutron_client.remove_interface_router(
rtr['id'], body)
except Exception:
LOG.exception("Router ports deletion failed")
LOG.info("Deleting router %s...", rtr['name'])
try:
self.neutron_client.delete_router(rtr['id'])
except Exception:
LOG.exception("Router deletion failed")
def run_client_dir(self,
target_ip,
mss,
reverse_dir=False,
bandwidth_kbps=0,
protocol='TCP',
length=0,
no_cpu_timed=0):
'''Run client in one direction
:param reverse_dir: True if reverse the direction (tcp only for now)
:param bandwidth_kbps: transmit rate limit in Kbps
:param protocol: (TCP|UDP|Multicast)
:param length: length of network write|read buf (default 1K|8K/udp, 64K/tcp)
for udp is the packet size
:param no_cpu_timed: if non zero will disable cpu collection and override
the time with the provided value - used mainly for udp
to find quickly the optimal throughput using short
tests at various throughput values
:return: a list of 1 dictionary with the results (see parse_results())
'''
# run client using the default TCP window size (tcp window
# scaling is normally enabled by default so setting explicit window
# size is not going to help achieve better results)
opts = ''
multicast = protocol == 'Multicast'
tcp = protocol == 'TCP'
udp = protocol == 'UDP'
if mss:
opts += "-M" + str(mss)
if reverse_dir:
opts += " -F -r"
if length:
opts += " -l" + str(length)
if self.instance.config.ipv6_mode:
opts += " -6 "
if multicast:
opts += " -m32 -o -j -g" + self.instance.config.multicast_addr
if not tcp:
opts += " -u"
# for UDP if the bandwidth is not provided we need to calculate
# the optimal bandwidth
if not bandwidth_kbps:
udp_res = self.find_bdw(length, target_ip, protocol)
if 'error' in udp_res:
return [udp_res]
if not self.instance.gmond_svr:
# if we do not collect CPU we miught as well return
# the results found through iteration
return [udp_res]
bandwidth_kbps = udp_res['throughput_kbps']
if bandwidth_kbps:
opts += " -R%sK" % (bandwidth_kbps)
if no_cpu_timed:
duration_sec = no_cpu_timed
else:
duration_sec = self.instance.get_cmd_duration()
# use data port 5001 and control port 5002
# must be enabled in the VM security group
cmd = "%s -a -T%d %s -p5001 -P5002 -fparse %s" % (
self.dest_path, duration_sec, opts, target_ip)
self.instance.buginf(cmd)
try:
if no_cpu_timed:
# force the timeout value with 20 second extra for the command to
# complete and do not collect CPU
cpu_load = None
cmd_out = self.instance.exec_command(cmd, duration_sec + 20)
else:
(cmd_out, cpu_load) = self.instance.exec_with_cpu(cmd)
except sshutils.SSHError as exc:
# Timout or any SSH error
self.instance.display('SSH Error:' + str(exc))
return [self.parse_error(protocol, str(exc))]
try:
if udp or multicast:
# UDP output:
# megabytes=1.1924 real_seconds=10.01 rate_Mbps=0.9997 tx_cpu=99 rx_cpu=0
# drop=0 pkt=1221 data_loss=0.00000
re_udp = r'rate_Mbps=([\d\.]*) tx_cpu=\d* rx_cpu=\d* drop=(\-*\d*) pkt=(\d*)'
if multicast:
re_udp += r' data_loss=[\d\.]* msmaxjitter=([\d\.]*) msavgOWD=([\-\d\.]*)'
match = re.search(re_udp, cmd_out)
if match:
rate_mbps = float(match.group(1))
drop = float(match.group(2))
pkt = int(match.group(3))
jitter = None
if multicast:
jitter = float(match.group(4))
# Workaround for a bug of nuttcp that sometimes it will return a
# negative number for drop.
if drop < 0:
drop = 0
return [
self.parse_results(protocol,
int(rate_mbps * 1024),
lossrate=round(drop * 100 / pkt, 2),
reverse_dir=reverse_dir,
msg_size=length,
cpu_load=cpu_load,
jitter=jitter)
]
else:
# TCP output:
# megabytes=1083.4252 real_seconds=10.04 rate_Mbps=905.5953 tx_cpu=3 rx_cpu=19
# retrans=0 cwnd=3202 rtt_ms=0.55
re_tcp = \
r'rate_Mbps=([\d\.]*) tx_cpu=\d* rx_cpu=\d*' \
' retrans=(\d*) cwnd=\d* rtt_ms=([\d\.]*)'
match = re.search(re_tcp, cmd_out)
if match:
rate_mbps = float(match.group(1))
retrans = int(match.group(2))
rtt_ms = float(match.group(3))
return [
self.parse_results(protocol,
int(rate_mbps * 1024),
retrans=retrans,
rtt_ms=rtt_ms,
reverse_dir=reverse_dir,
msg_size=length,
cpu_load=cpu_load)
]
except Exception as exc:
LOG.exception(cmd_out)
self.instance.display('Parsing Error:' + str(exc))
return [
self.parse_error(
protocol,
"cmd=%s: out=%s: exc=%s" % (cmd, cmd_out, str(exc)))
]
return [self.parse_error(protocol, 'Could not parse: %s' % (cmd_out))]
def __range_search(self, left, right, targets, results):
"""Perform a binary search for a list of targets inside a [left..right] range or rate.
left the left side of the range to search as a % the line rate (100 = 100% line rate)
indicating the rate to send on each interface
right the right side of the range to search as a % of line rate
indicating the rate to send on each interface
targets a dict of drop rates to search (0.1 = 0.1%), indexed by the DR name or "tag"
('ndr', 'pdr')
results a dict to store results
"""
if not targets:
return
LOG.info('Range search [%s .. %s] targets: %s', left, right, targets)
# Terminate search when gap is less than load epsilon
if right - left < self.config.measurement.load_epsilon:
self.__targets_found(left, targets, results)
return
# Obtain the average drop rate in for middle load
middle = (left + right) / 2.0
try:
stats, rates = self.__run_search_iteration(middle)
except STLError:
LOG.exception("Got exception from traffic generator during binary search")
self.__targets_found(left, targets, results)
return
# Split target dicts based on the avg drop rate
left_targets = {}
right_targets = {}
for tag, target in targets.iteritems():
if stats['overall']['drop_rate_percent'] <= target:
# record the best possible rate found for this target
results[tag] = rates
results[tag].update({
'load_percent_per_direction': middle,
'stats': self.__format_output_stats(dict(stats)),
'timestamp_sec': None
})
right_targets[tag] = target
else:
# initialize to 0 all fields of result for
# the worst case scenario of the binary search (if ndr/pdr is not found)
if tag not in results:
results[tag] = dict.fromkeys(rates, 0)
empty_stats = self.__format_output_stats(dict(stats))
for key in empty_stats:
if isinstance(empty_stats[key], dict):
empty_stats[key] = dict.fromkeys(empty_stats[key], 0)
else:
empty_stats[key] = 0
results[tag].update({
'load_percent_per_direction': 0,
'stats': empty_stats,
'timestamp_sec': None
})
left_targets[tag] = target
# search lower half
self.__range_search(left, middle, left_targets, results)
# search upper half only if the upper rate does not exceed
# 100%, this only happens when the first search at 100%
# yields a DR that is < target DR
if middle >= 100:
self.__targets_found(100, right_targets, results)
else:
self.__range_search(middle, right, right_targets, results)
