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() if self.worker else {}
 100
 101     def _get_network(self, traffic_port, index=None, reverse=False):
 102         interfaces = [self.clients['traffic'].get_interface(traffic_port)]
 103         if self.worker:
 104             interfaces.extend(self.worker.get_network_interfaces(index))
 105         return Network(interfaces, reverse)
 106
 107     def _config_interfaces(self):
 108         if self.config.service_chain != ChainType.EXT:
 109             self.clients['vm'].disable_port_security()
 110
 111         self.worker.config_interfaces()
 112
 113     def _generate_traffic(self):
 114         if self.config.no_traffic:
 115             return {}
 116
 117         self.interval_collector = IntervalCollector(time.time())
 118         self.interval_collector.attach_notifier(self.notifier)
 119         LOG.info('Starting to generate traffic...')
 120         stats = {}
 121         for stats in self.clients['traffic'].run_traffic():
 122             self.interval_collector.add(stats)
 123
 124         LOG.info('...traffic generating ended.')
 125         return stats
 126
 127     def get_stats(self):
 128         return self.interval_collector.get() if self.interval_collector else []
 129
 130     def get_version(self):
 131         return self.worker.get_version() if self.worker else {}
 132
 133     def run(self):
 134         """
 135         Run analysis in both direction and return the analysis
 136         """
 137         if self.worker:
 138             self.worker.run()
 139
 140         stats = self._generate_traffic()
 141         result = {
 142             'raw_data': self._get_data(),
 143             'packet_analysis': {},
 144             'stats': stats
 145         }
 146
 147         LOG.info('Requesting packet analysis on the forward direction...')
 148         result['packet_analysis']['direction-forward'] = \
 149             self.get_analysis([self._get_network(0, 0),
 150                                self._get_network(0, 1, reverse=True)])
 151         LOG.info('Packet analysis on the forward direction completed')
 152
 153         LOG.info('Requesting packet analysis on the reverse direction...')
 154         result['packet_analysis']['direction-reverse'] = \
 155             self.get_analysis([self._get_network(1, 1),
 156                                self._get_network(1, 0, reverse=True)])
 157
 158         LOG.info('Packet analysis on the reverse direction completed')
 159         return result
 160
 161     def get_compute_nodes_bios(self):
 162         return self.worker.get_compute_nodes_bios() if self.worker else {}
 163
 164     @staticmethod
 165     def get_analysis(nets):
 166         LOG.info('Starting traffic analysis...')
 167
 168         packet_analyzer = PacketAnalyzer()
 169         # Traffic types are assumed to always alternate in every chain. Add a no stats interface in
 170         # between if that is not the case.
 171         tx = True
 172         for network in nets:
 173             for interface in network.get_interfaces():
 174                 packet_analyzer.record(interface, 'tx' if tx else 'rx')
 175                 tx = not tx
 176
 177         LOG.info('...traffic analysis completed')
 178         return packet_analyzer.get_analysis()
 179
 180     def close(self):
 181         if self.worker:
 182             self.worker.close()
 183
 184
 185 class PVPStatsManager(StatsManager):
 186
 187     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 188         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 189
 190
 191 class PVVPStatsManager(StatsManager):
 192
 193     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 194         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 195
 196     def run(self):
 197         """
 198         Run analysis in both direction and return the analysis
 199         """
 200         fwd_v2v_net, rev_v2v_net = self.worker.run()
 201
 202         stats = self._generate_traffic()
 203         result = {
 204             'raw_data': self._get_data(),
 205             'packet_analysis': {},
 206             'stats': stats
 207         }
 208
 209         fwd_nets = [self._get_network(0, 0)]
 210         if fwd_v2v_net:
 211             fwd_nets.append(fwd_v2v_net)
 212         fwd_nets.append(self._get_network(0, 1, reverse=True))
 213
 214         rev_nets = [self._get_network(1, 1)]
 215         if rev_v2v_net:
 216             rev_nets.append(rev_v2v_net)
 217         rev_nets.append(self._get_network(1, 0, reverse=True))
 218
 219         LOG.info('Requesting packet analysis on the forward direction...')
 220         result['packet_analysis']['direction-forward'] = self.get_analysis(fwd_nets)
 221         LOG.info('Packet analysis on the forward direction completed')
 222
 223         LOG.info('Requesting packet analysis on the reverse direction...')
 224         result['packet_analysis']['direction-reverse'] = self.get_analysis(rev_nets)
 225
 226         LOG.info('Packet analysis on the reverse direction completed')
 227         return result
 228
 229
 230 class EXTStatsManager(StatsManager):
 231     def __init__(self, config, clients, specs, factory, vlans, notifier=None):
 232         StatsManager.__init__(self, config, clients, specs, factory, vlans, notifier)
 233
 234     def _setup(self):
 235         if self.specs.openstack:
 236             WORKER_CLASS = self.factory.get_chain_worker(self.specs.openstack.encaps,
 237                                                          self.config.service_chain)
 238             self.worker = WORKER_CLASS(self.config, self.clients, self.specs)
 239             self.worker.set_vlans(self.vlans)
 240
 241             if not self.config.no_int_config:
 242                 self._config_interfaces()
 243         else:
 244             self.worker = None