nfvbench/chain_managers.py

   1 #!/usr/bin/env python
   2 # Copyright 2016 Cisco Systems, Inc.  All rights reserved.
   3 #
   4 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
   5 #    not use this file except in compliance with the License. You may obtain
   6 #    a copy of the License at
   7 #
   8 #         http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 #    Unless required by applicable law or agreed to in writing, software
  11 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  12 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  13 #    License for the specific language governing permissions and limitations
  14 #    under the License.
  15 #
  16 import time
  17
  18
  19 from log import LOG
  20 from network import Network
  21 from packet_analyzer import PacketAnalyzer
  22 from specs import ChainType
  23 from stats_collector import IntervalCollector
  24
  25
  26 class StageManager(object):
  27
  28     def __init__(self, config, cred, factory):
  29         self.config = config
  30         self.client = None
  31         # conditions due to EXT chain special cases
  32         if (config.vlan_tagging and not config.vlans) or not config.no_int_config:
  33             VM_CLASS = factory.get_stage_class(config.service_chain)
  34             self.client = VM_CLASS(config, cred)
  35             self.client.setup()
  36
  37     def get_vlans(self):
  38         return self.client.get_vlans() if self.client else []
  39
  40     def get_host_ips(self):
  41         return self.client.get_host_ips()
  42
  43     def get_networks_uuids(self):
  44         return self.client.get_networks_uuids()
  45
  46     def disable_port_security(self):
  47         self.client.disable_port_security()
  48
  49     def get_vms(self):
  50         return self.client.vms
  51
  52     def get_nets(self):
  53         return self.client.nets
  54
  55     def get_ports(self):
  56         return self.client.ports
  57
  58     def get_compute_nodes(self):
  59         return self.client.compute_nodes
  60
  61     def set_vm_macs(self):
  62         if self.client and self.config.service_chain != ChainType.EXT:
  63             self.config.generator_config.set_vm_mac_list(self.client.get_end_port_macs())
  64
  65     def close(self):
  66         if not self.config.no_cleanup and self.client:
  67             self.client.dispose()
  68
  69
  70 class StatsManager(object):
  71
  72     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
  73         self.config = config
  74         self.clients = clients
  75         self.specs = specs
  76         self.notifier = notifier
  77         self.interval_collector = None
  78         self.vlans = vlans
  79         self.factory = factory
  80         self._setup()
  81
  82     def set_vlan_tag(self, device, vlan):
  83         self.worker.set_vlan_tag(device, vlan)
  84
  85     def _setup(self):
  86         WORKER_CLASS = self.factory.get_chain_worker(self.specs.openstack.encaps,
  87                                                      self.config.service_chain)
  88         self.worker = WORKER_CLASS(self.config, self.clients, self.specs)
  89         try:
  90             self.worker.set_vlans(self.vlans)
  91             self._config_interfaces()
  92         except Exception as exc:
  93             # since the wrorker is up and running, we need to close it
  94             # in case of exception
  95             self.close()
  96             raise exc
  97
  98     def _get_data(self):
  99         return self.worker.get_data()
 100
 101     def _get_network(self, traffic_port, index=None, reverse=False):
 102         interfaces = [self.clients['traffic'].get_interface(traffic_port)]
 103         interfaces.extend(self.worker.get_network_interfaces(index))
 104         return Network(interfaces, reverse)
 105
 106     def _config_interfaces(self):
 107         if self.config.service_chain != ChainType.EXT:
 108             self.clients['vm'].disable_port_security()
 109
 110         self.worker.config_interfaces()
 111
 112     def _generate_traffic(self):
 113         if self.config.no_traffic:
 114             return
 115
 116         self.interval_collector = IntervalCollector(time.time())
 117         self.interval_collector.attach_notifier(self.notifier)
 118         LOG.info('Starting to generate traffic...')
 119         stats = {}
 120         for stats in self.clients['traffic'].run_traffic():
 121             self.interval_collector.add(stats)
 122
 123         LOG.info('...traffic generating ended.')
 124         return stats
 125
 126     def get_stats(self):
 127         return self.interval_collector.get() if self.interval_collector else []
 128
 129     def get_version(self):
 130         return self.worker.get_version()
 131
 132     def run(self):
 133         """
 134         Run analysis in both direction and return the analysis
 135         """
 136         self.worker.run()
 137
 138         stats = self._generate_traffic()
 139         result = {
 140             'raw_data': self._get_data(),
 141             'packet_analysis': {},
 142             'stats': stats
 143         }
 144
 145         LOG.info('Requesting packet analysis on the forward direction...')
 146         result['packet_analysis']['direction-forward'] = \
 147             self.get_analysis([self._get_network(0, 0),
 148                                self._get_network(0, 1, reverse=True)])
 149         LOG.info('Packet analysis on the forward direction completed')
 150
 151         LOG.info('Requesting packet analysis on the reverse direction...')
 152         result['packet_analysis']['direction-reverse'] = \
 153             self.get_analysis([self._get_network(1, 1),
 154                                self._get_network(1, 0, reverse=True)])
 155
 156         LOG.info('Packet analysis on the reverse direction completed')
 157         return result
 158
 159     def get_compute_nodes_bios(self):
 160         return self.worker.get_compute_nodes_bios()
 161
 162     @staticmethod
 163     def get_analysis(nets):
 164         LOG.info('Starting traffic analysis...')
 165
 166         packet_analyzer = PacketAnalyzer()
 167         # Traffic types are assumed to always alternate in every chain. Add a no stats interface in
 168         # between if that is not the case.
 169         tx = True
 170         for network in nets:
 171             for interface in network.get_interfaces():
 172                 packet_analyzer.record(interface, 'tx' if tx else 'rx')
 173                 tx = not tx
 174
 175         LOG.info('...traffic analysis completed')
 176         return packet_analyzer.get_analysis()
 177
 178     def close(self):
 179         self.worker.close()
 180
 181
 182 class PVPStatsManager(StatsManager):
 183
 184     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 185         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 186
 187
 188 class PVVPStatsManager(StatsManager):
 189
 190     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 191         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 192
 193     def run(self):
 194         """
 195         Run analysis in both direction and return the analysis
 196         """
 197         fwd_v2v_net, rev_v2v_net = self.worker.run()
 198
 199         stats = self._generate_traffic()
 200         result = {
 201             'raw_data': self._get_data(),
 202             'packet_analysis': {},
 203             'stats': stats
 204         }
 205
 206         fwd_nets = [self._get_network(0, 0)]
 207         if fwd_v2v_net:
 208             fwd_nets.append(fwd_v2v_net)
 209         fwd_nets.append(self._get_network(0, 1, reverse=True))
 210
 211         rev_nets = [self._get_network(1, 1)]
 212         if rev_v2v_net:
 213             rev_nets.append(rev_v2v_net)
 214         rev_nets.append(self._get_network(1, 0, reverse=True))
 215
 216         LOG.info('Requesting packet analysis on the forward direction...')
 217         result['packet_analysis']['direction-forward'] = self.get_analysis(fwd_nets)
 218         LOG.info('Packet analysis on the forward direction completed')
 219
 220         LOG.info('Requesting packet analysis on the reverse direction...')
 221         result['packet_analysis']['direction-reverse'] = self.get_analysis(rev_nets)
 222
 223         LOG.info('Packet analysis on the reverse direction completed')
 224         return result
 225
 226
 227 class EXTStatsManager(StatsManager):
 228     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 229         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 230
 231     def _setup(self):
 232         WORKER_CLASS = self.factory.get_chain_worker(self.specs.openstack.encaps,
 233                                                      self.config.service_chain)
 234         self.worker = WORKER_CLASS(self.config, self.clients, self.specs)
 235         self.worker.set_vlans(self.vlans)
 236
 237         if not self.config.no_int_config:
 238             self._config_interfaces()