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#!/usr/bin/env python
# Copyright 2016 Cisco Systems, Inc. All rights reserved.
#
# 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.
#
from contextlib import contextmanager
from datetime import datetime
import math
import bitmath
import pytz
from tabulate import tabulate
def _annotate_chain_stats(chain_stats, nodrop_marker='=>'):
"""Transform a plain chain stats into an annotated one.
Example:
{
0: {'packets': [2000054, 1999996, 1999996, 1999996],
'lat_min_usec': 10,
'lat_max_usec': 187,
'lat_avg_usec': 45},
1: {...},
'total': {...}
}
should become:
{
0: {'packets': [2000054, -58 (-0.034%), '=>', 1999996],
'lat_min_usec': 10,
'lat_max_usec': 187,
'lat_avg_usec': 45},
1: {...},
'total': {...}
}
In the case of shared net, some columns in packets array can have ''.
Some columns cab also be None which means the data is not available.
"""
for stats in chain_stats.values():
packets = stats['packets']
count = len(packets)
if count > 1:
# keep the first counter
annotated_packets = [packets[0]]
# modify all remaining counters
prev_count = packets[0]
for index in range(1, count):
cur_count = packets[index]
if cur_count == '':
# an empty string indicates an unknown counter for a shared interface
# do not annotate those
annotated_value = ''
elif cur_count is None:
# Not available
annotated_value = 'n/a'
else:
drop = cur_count - prev_count
if drop:
dr = (drop * 100.0) / prev_count if prev_count else 0
annotated_value = '{:+,} ({:+.4f}%)'.format(drop, dr)
else:
# no drop
# if last column we display the value
annotated_value = cur_count if index == count - 1 else nodrop_marker
prev_count = cur_count
annotated_packets.append(annotated_value)
stats['packets'] = annotated_packets
class Formatter(object):
"""Collection of string formatter methods."""
@staticmethod
def fixed(data):
return data
@staticmethod
def int(data):
return '{:,}'.format(data)
@staticmethod
def float(decimal):
return lambda data: '%.{}f'.format(decimal) % (data)
@staticmethod
def standard(data):
if isinstance(data, int):
return Formatter.int(data)
elif isinstance(data, float):
return Formatter.float(4)(data)
return Formatter.fixed(data)
@staticmethod
def suffix(suffix_str):
return lambda data: Formatter.standard(data) + suffix_str
@staticmethod
def bits(data):
# By default, `best_prefix` returns a value in byte format, this hack (multiply by 8.0)
# will convert it into bit format.
bit = 8.0 * bitmath.Bit(float(data))
bit = bit.best_prefix(bitmath.SI)
byte_to_bit_classes = {
'kB': bitmath.kb,
'MB': bitmath.Mb,
'GB': bitmath.Gb,
'TB': bitmath.Tb,
'PB': bitmath.Pb,
'EB': bitmath.Eb,
'ZB': bitmath.Zb,
'YB': bitmath.Yb,
}
bps = byte_to_bit_classes.get(bit.unit, bitmath.Bit).from_other(bit) / 8.0
if bps.unit != 'Bit':
return bps.format("{value:.4f} {unit}ps")
return bps.format("{value:.4f} bps")
@staticmethod
def percentage(data):
if data is None:
return ''
elif math.isnan(data):
return '-'
return Formatter.suffix('%')(Formatter.float(4)(data))
class Table(object):
"""ASCII readable table class."""
def __init__(self, header):
header_row, self.formatters = zip(*header)
self.data = [header_row]
self.columns = len(header_row)
def add_row(self, row):
assert self.columns == len(row)
formatted_row = []
for entry, formatter in zip(row, self.formatters):
formatted_row.append(formatter(entry))
self.data.append(formatted_row)
def get_string(self, indent=0):
spaces = ' ' * indent
table = tabulate(self.data,
headers='firstrow',
tablefmt='grid',
stralign='center',
floatfmt='.2f')
return table.replace('\n', '\n' + spaces)
class Summarizer(object):
"""Generic summarizer class."""
indent_per_level = 2
def __init__(self):
self.indent_size = 0
self.marker_stack = [False]
self.str = ''
def __indent(self, marker):
self.indent_size += self.indent_per_level
self.marker_stack.append(marker)
def __unindent(self):
assert self.indent_size >= self.indent_per_level
self.indent_size -= self.indent_per_level
self.marker_stack.pop()
def __get_indent_string(self):
current_str = ' ' * self.indent_size
if self.marker_stack[-1]:
current_str = current_str[:-2] + '> '
return current_str
def _put(self, *args):
self.str += self.__get_indent_string()
if args and isinstance(args[-1], dict):
self.str += ' '.join(map(str, args[:-1])) + '\n'
self._put_dict(args[-1])
else:
self.str += ' '.join(map(str, args)) + '\n'
def _put_dict(self, data):
with self._create_block(False):
for key, value in data.iteritems():
if isinstance(value, dict):
self._put(key + ':')
self._put_dict(value)
else:
self._put(key + ':', value)
def _put_table(self, table):
self.str += self.__get_indent_string()
self.str += table.get_string(self.indent_size) + '\n'
def __str__(self):
return self.str
@contextmanager
def _create_block(self, marker=True):
self.__indent(marker)
yield
self.__unindent()
class NFVBenchSummarizer(Summarizer):
"""Summarize nfvbench json result."""
ndr_pdr_header = [
('-', Formatter.fixed),
('L2 Frame Size', Formatter.standard),
('Rate (fwd+rev)', Formatter.bits),
('Rate (fwd+rev)', Formatter.suffix(' pps')),
('Avg Drop Rate', Formatter.suffix('%')),
('Avg Latency (usec)', Formatter.standard),
('Min Latency (usec)', Formatter.standard),
('Max Latency (usec)', Formatter.standard)
]
single_run_header = [
('L2 Frame Size', Formatter.standard),
('Drop Rate', Formatter.suffix('%')),
('Avg Latency (usec)', Formatter.standard),
('Min Latency (usec)', Formatter.standard),
('Max Latency (usec)', Formatter.standard)
]
config_header = [
('Direction', Formatter.standard),
('Requested TX Rate (bps)', Formatter.bits),
('Actual TX Rate (bps)', Formatter.bits),
('RX Rate (bps)', Formatter.bits),
('Requested TX Rate (pps)', Formatter.suffix(' pps')),
('Actual TX Rate (pps)', Formatter.suffix(' pps')),
('RX Rate (pps)', Formatter.suffix(' pps'))
]
direction_keys = ['direction-forward', 'direction-reverse', 'direction-total']
direction_names = ['Forward', 'Reverse', 'Total']
def __init__(self, result, sender):
"""Create a summarizer instance."""
Summarizer.__init__(self)
self.result = result
self.config = self.result['config']
self.record_header = None
self.record_data = None
self.sender = sender
# if sender is available initialize record
if self.sender:
self.__record_init()
self.__summarize()
def __get_openstack_spec(self, property):
try:
return self.result['openstack_spec'][property]
except KeyError:
return ''
def __summarize(self):
self._put()
self._put('========== NFVBench Summary ==========')
self._put('Date:', self.result['date'])
self._put('NFVBench version', self.result['nfvbench_version'])
self._put('Openstack Neutron:', {
'vSwitch': self.__get_openstack_spec('vswitch'),
'Encapsulation': self.__get_openstack_spec('encaps')
})
self.__record_header_put('version', self.result['nfvbench_version'])
self.__record_header_put('vSwitch', self.__get_openstack_spec('vswitch'))
self.__record_header_put('Encapsulation', self.__get_openstack_spec('encaps'))
self._put('Benchmarks:')
with self._create_block():
self._put('Networks:')
with self._create_block():
network_benchmark = self.result['benchmarks']['network']
self._put('Components:')
with self._create_block():
self._put('Traffic Generator:')
with self._create_block(False):
self._put('Profile:', self.config['tg-name'])
self._put('Tool:', self.config['tg-tool'])
if network_benchmark['versions']:
self._put('Versions:')
with self._create_block():
for component, version in network_benchmark['versions'].iteritems():
self._put(component + ':', version)
if self.config['ndr_run'] or self.config['pdr_run']:
self._put('Measurement Parameters:')
with self._create_block(False):
if self.config['ndr_run']:
self._put('NDR:', self.config['measurement']['NDR'])
if self.config['pdr_run']:
self._put('PDR:', self.config['measurement']['PDR'])
self._put('Service chain:')
for result in network_benchmark['service_chain'].iteritems():
with self._create_block():
self.__chain_summarize(*result)
def __chain_summarize(self, chain_name, chain_benchmark):
self._put(chain_name + ':')
self.__record_header_put('service_chain', chain_name)
with self._create_block():
self._put('Traffic:')
with self._create_block(False):
self.__traffic_summarize(chain_benchmark['result'])
def __traffic_summarize(self, traffic_benchmark):
self._put('Profile:', traffic_benchmark['profile'])
self._put('Bidirectional:', traffic_benchmark['bidirectional'])
self._put('Flow count:', traffic_benchmark['flow_count'])
self._put('Service chains count:', traffic_benchmark['service_chain_count'])
self._put('Compute nodes:', traffic_benchmark['compute_nodes'].keys())
self.__record_header_put('profile', traffic_benchmark['profile'])
self.__record_header_put('bidirectional', traffic_benchmark['bidirectional'])
self.__record_header_put('flow_count', traffic_benchmark['flow_count'])
self.__record_header_put('sc_count', traffic_benchmark['service_chain_count'])
self.__record_header_put('compute_nodes', traffic_benchmark['compute_nodes'].keys())
with self._create_block(False):
self._put()
if not self.config['no_traffic']:
self._put('Run Summary:')
self._put()
with self._create_block(False):
self._put_table(self.__get_summary_table(traffic_benchmark['result']))
try:
self._put()
self._put(traffic_benchmark['result']['warning'])
except KeyError:
pass
for entry in traffic_benchmark['result'].iteritems():
if 'warning' in entry:
continue
self.__chain_analysis_summarize(*entry)
self.__record_send()
def __chain_analysis_summarize(self, frame_size, analysis):
self._put()
self._put('L2 frame size:', frame_size)
if self.config['ndr_run']:
self._put('NDR search duration:', Formatter.float(0)(analysis['ndr']['time_taken_sec']),
'seconds')
self.__record_data_put(frame_size, {'ndr_search_duration': Formatter.float(0)(
analysis['ndr']['time_taken_sec'])})
if self.config['pdr_run']:
self._put('PDR search duration:', Formatter.float(0)(analysis['pdr']['time_taken_sec']),
'seconds')
self.__record_data_put(frame_size, {'pdr_search_duration': Formatter.float(0)(
analysis['pdr']['time_taken_sec'])})
self._put()
if not self.config['no_traffic'] and self.config['single_run']:
self._put('Run Config:')
self._put()
with self._create_block(False):
self._put_table(self.__get_config_table(analysis['run_config'], frame_size))
if 'warning' in analysis['run_config'] and analysis['run_config']['warning']:
self._put()
self._put(analysis['run_config']['warning'])
self._put()
if 'packet_path_stats' in analysis:
for dir in ['Forward', 'Reverse']:
self._put(dir + ' Chain Packet Counters and Latency:')
self._put()
with self._create_block(False):
self._put_table(self._get_chain_table(analysis['packet_path_stats'][dir]))
self._put()
def __get_summary_table(self, traffic_result):
if self.config['single_run']:
summary_table = Table(self.single_run_header)
else:
summary_table = Table(self.ndr_pdr_header)
if self.config['ndr_run']:
for frame_size, analysis in traffic_result.iteritems():
if frame_size == 'warning':
continue
summary_table.add_row([
'NDR',
frame_size,
analysis['ndr']['rate_bps'],
analysis['ndr']['rate_pps'],
analysis['ndr']['stats']['overall']['drop_percentage'],
analysis['ndr']['stats']['overall']['avg_delay_usec'],
analysis['ndr']['stats']['overall']['min_delay_usec'],
analysis['ndr']['stats']['overall']['max_delay_usec']
])
self.__record_data_put(frame_size, {'ndr': {
'type': 'NDR',
'rate_bps': analysis['ndr']['rate_bps'],
'rate_pps': analysis['ndr']['rate_pps'],
'drop_percentage': analysis['ndr']['stats']['overall']['drop_percentage'],
'avg_delay_usec': analysis['ndr']['stats']['overall']['avg_delay_usec'],
'min_delay_usec': analysis['ndr']['stats']['overall']['min_delay_usec'],
'max_delay_usec': analysis['ndr']['stats']['overall']['max_delay_usec']
}})
if self.config['pdr_run']:
for frame_size, analysis in traffic_result.iteritems():
if frame_size == 'warning':
continue
summary_table.add_row([
'PDR',
frame_size,
analysis['pdr']['rate_bps'],
analysis['pdr']['rate_pps'],
analysis['pdr']['stats']['overall']['drop_percentage'],
analysis['pdr']['stats']['overall']['avg_delay_usec'],
analysis['pdr']['stats']['overall']['min_delay_usec'],
analysis['pdr']['stats']['overall']['max_delay_usec']
])
self.__record_data_put(frame_size, {'pdr': {
'type': 'PDR',
'rate_bps': analysis['pdr']['rate_bps'],
'rate_pps': analysis['pdr']['rate_pps'],
'drop_percentage': analysis['pdr']['stats']['overall']['drop_percentage'],
'avg_delay_usec': analysis['pdr']['stats']['overall']['avg_delay_usec'],
'min_delay_usec': analysis['pdr']['stats']['overall']['min_delay_usec'],
'max_delay_usec': analysis['pdr']['stats']['overall']['max_delay_usec']
}})
if self.config['single_run']:
for frame_size, analysis in traffic_result.iteritems():
summary_table.add_row([
frame_size,
analysis['stats']['overall']['drop_rate_percent'],
analysis['stats']['overall']['rx']['avg_delay_usec'],
analysis['stats']['overall']['rx']['min_delay_usec'],
analysis['stats']['overall']['rx']['max_delay_usec']
])
self.__record_data_put(frame_size, {'single_run': {
'type': 'single_run',
'drop_rate_percent': analysis['stats']['overall']['drop_rate_percent'],
'avg_delay_usec': analysis['stats']['overall']['rx']['avg_delay_usec'],
'min_delay_usec': analysis['stats']['overall']['rx']['min_delay_usec'],
'max_delay_usec': analysis['stats']['overall']['rx']['max_delay_usec']
}})
return summary_table
def __get_config_table(self, run_config, frame_size):
config_table = Table(self.config_header)
for key, name in zip(self.direction_keys, self.direction_names):
if key not in run_config:
continue
config_table.add_row([
name,
run_config[key]['orig']['rate_bps'],
run_config[key]['tx']['rate_bps'],
run_config[key]['rx']['rate_bps'],
int(run_config[key]['orig']['rate_pps']),
int(run_config[key]['tx']['rate_pps']),
int(run_config[key]['rx']['rate_pps']),
])
self.__record_data_put(frame_size, {
name.lower() + "_orig_rate_bps": int(run_config[key]['orig']['rate_bps']),
name.lower() + "_tx_rate_bps": int(run_config[key]['tx']['rate_bps']),
name.lower() + "_rx_rate_bps": int(run_config[key]['rx']['rate_bps']),
name.lower() + "_orig_rate_pps": int(run_config[key]['orig']['rate_pps']),
name.lower() + "_tx_rate_pps": int(run_config[key]['tx']['rate_pps']),
name.lower() + "_rx_rate_pps": int(run_config[key]['rx']['rate_pps']),
})
return config_table
def _get_chain_table(self, chain_stats):
"""Retrieve the table for a direction.
chain_stats: {
'interfaces': ['Port0', 'drop %'', 'vhost0', 'Port1'],
'chains': {
0: {'packets': [2000054, '-0.023%', 1999996, 1999996],
'lat_min_usec': 10,
'lat_max_usec': 187,
'lat_avg_usec': 45},
1: {...},
'total': {...}
}
}
"""
chains = chain_stats['chains']
_annotate_chain_stats(chains)
header = [('Chain', Formatter.standard)] + \
[(ifname, Formatter.standard) for ifname in chain_stats['interfaces']]
# add latency columns if available Avg, Min, Max
lat_keys = []
lat_map = {'lat_avg_usec': 'Avg lat.',
'lat_min_usec': 'Min lat.',
'lat_max_usec': 'Max lat.'}
if 'lat_avg_usec' in chains[0]:
lat_keys = ['lat_avg_usec', 'lat_min_usec', 'lat_max_usec']
for key in lat_keys:
header.append((lat_map[key], Formatter.standard))
table = Table(header)
for chain in sorted(chains.keys()):
row = [chain] + chains[chain]['packets']
for lat_key in lat_keys:
row.append('{:,} usec'.format(chains[chain][lat_key]))
table.add_row(row)
return table
def __record_header_put(self, key, value):
if self.sender:
self.record_header[key] = value
def __record_data_put(self, key, data):
if self.sender:
if key not in self.record_data:
self.record_data[key] = {}
self.record_data[key].update(data)
def __record_send(self):
if self.sender:
self.record_header["@timestamp"] = datetime.utcnow().replace(
tzinfo=pytz.utc).strftime("%Y-%m-%dT%H:%M:%S.%f%z")
for frame_size in self.record_data:
data = self.record_header
data['frame_size'] = frame_size
data.update(self.record_data[frame_size])
run_specific_data = {}
if 'single_run' in data:
run_specific_data['single_run'] = data['single_run']
del data['single_run']
if 'ndr' in data:
run_specific_data['ndr'] = data['ndr']
run_specific_data['ndr']['drop_limit'] = self.config['measurement']['NDR']
del data['ndr']
if 'pdr' in data:
run_specific_data['pdr'] = data['pdr']
run_specific_data['pdr']['drop_limit'] = self.config['measurement']['PDR']
del data['pdr']
for key in run_specific_data:
data_to_send = data.copy()
data_to_send.update(run_specific_data[key])
self.sender.record_send(data_to_send)
self.__record_init()
def __record_init(self):
# init is called after checking for sender
self.record_header = {
"runlogdate": self.sender.runlogdate,
"user_label": self.config['user_label']
}
self.record_data = {}
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