yardstick/benchmark/contexts/heat.py

   1 ##############################################################################
   2 # Copyright (c) 2015 Ericsson AB and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10 from __future__ import absolute_import
  11 from __future__ import print_function
  12
  13 import collections
  14 import logging
  15 import os
  16 import errno
  17 from collections import OrderedDict
  18
  19 import ipaddress
  20 import pkg_resources
  21
  22 from yardstick.benchmark.contexts.base import Context
  23 from yardstick.benchmark.contexts.model import Network
  24 from yardstick.benchmark.contexts.model import PlacementGroup, ServerGroup
  25 from yardstick.benchmark.contexts.model import Server
  26 from yardstick.benchmark.contexts.model import update_scheduler_hints
  27 from yardstick.common import exceptions as y_exc
  28 from yardstick.common.openstack_utils import get_shade_client
  29 from yardstick.orchestrator.heat import HeatStack
  30 from yardstick.orchestrator.heat import HeatTemplate
  31 from yardstick.common import constants as consts
  32 from yardstick.common import utils
  33 from yardstick.common.utils import source_env
  34 from yardstick.ssh import SSH
  35
  36 LOG = logging.getLogger(__name__)
  37
  38 DEFAULT_HEAT_TIMEOUT = 3600
  39
  40
  41 def join_args(sep, *args):
  42     return sep.join(args)
  43
  44
  45 def h_join(*args):
  46     return '-'.join(args)
  47
  48
  49 class HeatContext(Context):
  50     """Class that represents a context in the logical model"""
  51
  52     __context_type__ = "Heat"
  53
  54     def __init__(self):
  55         self.stack = None
  56         self.networks = OrderedDict()
  57         self.heat_timeout = None
  58         self.servers = []
  59         self.placement_groups = []
  60         self.server_groups = []
  61         self.keypair_name = None
  62         self.secgroup_name = None
  63         self._server_map = {}
  64         self.attrs = {}
  65         self._image = None
  66         self._flavor = None
  67         self.flavors = set()
  68         self._user = None
  69         self.template_file = None
  70         self.heat_parameters = None
  71         self.shade_client = None
  72         self.heat_timeout = None
  73         self.key_filename = None
  74         super(HeatContext, self).__init__()
  75
  76     @staticmethod
  77     def assign_external_network(networks):
  78         sorted_networks = sorted(networks.items())
  79         external_network = os.environ.get("EXTERNAL_NETWORK", "net04_ext")
  80
  81         have_external_network = any(net.get("external_network") for net in networks.values())
  82         if not have_external_network:
  83             # try looking for mgmt network first
  84             try:
  85                 networks['mgmt']["external_network"] = external_network
  86             except KeyError:
  87                 if sorted_networks:
  88                     # otherwise assign it to first network using os.environ
  89                     sorted_networks[0][1]["external_network"] = external_network
  90
  91         return sorted_networks
  92
  93     def init(self, attrs):
  94         """Initializes itself from the supplied arguments"""
  95         super(HeatContext, self).init(attrs)
  96
  97         self.check_environment()
  98         self._user = attrs.get("user")
  99
 100         self.template_file = attrs.get("heat_template")
 101
 102         self.heat_timeout = attrs.get("timeout", DEFAULT_HEAT_TIMEOUT)
 103         if self.template_file:
 104             self.heat_parameters = attrs.get("heat_parameters")
 105             return
 106
 107         self.keypair_name = h_join(self.name, "key")
 108         self.secgroup_name = h_join(self.name, "secgroup")
 109
 110         self._image = attrs.get("image")
 111
 112         self._flavor = attrs.get("flavor")
 113
 114         self.placement_groups = [PlacementGroup(name, self, pg_attrs["policy"])
 115                                  for name, pg_attrs in attrs.get(
 116                                  "placement_groups", {}).items()]
 117
 118         self.server_groups = [ServerGroup(name, self, sg_attrs["policy"])
 119                               for name, sg_attrs in attrs.get(
 120                               "server_groups", {}).items()]
 121
 122         # we have to do this first, because we are injecting external_network
 123         # into the dict
 124         sorted_networks = self.assign_external_network(attrs["networks"])
 125
 126         self.networks = OrderedDict(
 127             (name, Network(name, self, net_attrs)) for name, net_attrs in
 128             sorted_networks)
 129
 130         for name, server_attrs in sorted(attrs["servers"].items()):
 131             server = Server(name, self, server_attrs)
 132             self.servers.append(server)
 133             self._server_map[server.dn] = server
 134
 135         self.attrs = attrs
 136
 137         self.key_filename = ''.join(
 138             [consts.YARDSTICK_ROOT_PATH,
 139              'yardstick/resources/files/yardstick_key-',
 140               self.name])
 141         # Permissions may have changed since creation; this can be fixed. If we
 142         # overwrite the file, we lose future access to VMs using this key.
 143         # As long as the file exists, even if it is unreadable, keep it intact
 144         if not os.path.exists(self.key_filename):
 145             SSH.gen_keys(self.key_filename)
 146
 147     def check_environment(self):
 148         try:
 149             os.environ['OS_AUTH_URL']
 150         except KeyError:
 151             try:
 152                 source_env(consts.OPENRC)
 153             except IOError as e:
 154                 if e.errno != errno.EEXIST:
 155                     LOG.error('OPENRC file not found')
 156                     raise
 157                 else:
 158                     LOG.error('OS_AUTH_URL not found')
 159
 160     @property
 161     def image(self):
 162         """returns application's default image name"""
 163         return self._image
 164
 165     @property
 166     def flavor(self):
 167         """returns application's default flavor name"""
 168         return self._flavor
 169
 170     @property
 171     def user(self):
 172         """return login user name corresponding to image"""
 173         return self._user
 174
 175     def _add_resources_to_template(self, template):
 176         """add to the template the resources represented by this context"""
 177
 178         if self.flavor:
 179             if isinstance(self.flavor, dict):
 180                 flavor = self.flavor.setdefault("name", self.name + "-flavor")
 181                 template.add_flavor(**self.flavor)
 182                 self.flavors.add(flavor)
 183
 184         template.add_keypair(self.keypair_name, self.name)
 185         template.add_security_group(self.secgroup_name)
 186
 187         for network in self.networks.values():
 188             # Using existing network
 189             if network.is_existing():
 190                 continue
 191             template.add_network(network.stack_name,
 192                                  network.physical_network,
 193                                  network.provider,
 194                                  network.segmentation_id,
 195                                  network.port_security_enabled,
 196                                  network.network_type)
 197             template.add_subnet(network.subnet_stack_name, network.stack_name,
 198                                 network.subnet_cidr,
 199                                 network.enable_dhcp,
 200                                 network.gateway_ip)
 201
 202             if network.router:
 203                 template.add_router(network.router.stack_name,
 204                                     network.router.external_gateway_info,
 205                                     network.subnet_stack_name)
 206                 template.add_router_interface(network.router.stack_if_name,
 207                                               network.router.stack_name,
 208                                               network.subnet_stack_name)
 209
 210         # create a list of servers sorted by increasing no of placement groups
 211         list_of_servers = sorted(self.servers,
 212                                  key=lambda s: len(s.placement_groups))
 213
 214         #
 215         # add servers with scheduler hints derived from placement groups
 216         #
 217
 218         # create list of servers with availability policy
 219         availability_servers = []
 220         for server in list_of_servers:
 221             for pg in server.placement_groups:
 222                 if pg.policy == "availability":
 223                     availability_servers.append(server)
 224                     break
 225
 226         for server in availability_servers:
 227             if isinstance(server.flavor, dict):
 228                 try:
 229                     self.flavors.add(server.flavor["name"])
 230                 except KeyError:
 231                     self.flavors.add(h_join(server.stack_name, "flavor"))
 232
 233         # add servers with availability policy
 234         added_servers = []
 235         for server in availability_servers:
 236             scheduler_hints = {}
 237             for pg in server.placement_groups:
 238                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 239             # workaround for openstack nova bug, check JIRA: YARDSTICK-200
 240             # for details
 241             if len(availability_servers) == 2:
 242                 if not scheduler_hints["different_host"]:
 243                     scheduler_hints.pop("different_host", None)
 244                     server.add_to_template(template,
 245                                            list(self.networks.values()),
 246                                            scheduler_hints)
 247                 else:
 248                     scheduler_hints["different_host"] = \
 249                         scheduler_hints["different_host"][0]
 250                     server.add_to_template(template,
 251                                            list(self.networks.values()),
 252                                            scheduler_hints)
 253             else:
 254                 server.add_to_template(template,
 255                                        list(self.networks.values()),
 256                                        scheduler_hints)
 257             added_servers.append(server.stack_name)
 258
 259         # create list of servers with affinity policy
 260         affinity_servers = []
 261         for server in list_of_servers:
 262             for pg in server.placement_groups:
 263                 if pg.policy == "affinity":
 264                     affinity_servers.append(server)
 265                     break
 266
 267         # add servers with affinity policy
 268         for server in affinity_servers:
 269             if server.stack_name in added_servers:
 270                 continue
 271             scheduler_hints = {}
 272             for pg in server.placement_groups:
 273                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 274             server.add_to_template(template, list(self.networks.values()),
 275                                    scheduler_hints)
 276             added_servers.append(server.stack_name)
 277
 278         # add server group
 279         for sg in self.server_groups:
 280             template.add_server_group(sg.name, sg.policy)
 281
 282         # add remaining servers with no placement group configured
 283         for server in list_of_servers:
 284             # TODO placement_group and server_group should combine
 285             if not server.placement_groups:
 286                 scheduler_hints = {}
 287                 # affinity/anti-aff server group
 288                 sg = server.server_group
 289                 if sg:
 290                     scheduler_hints["group"] = {'get_resource': sg.name}
 291                 server.add_to_template(template,
 292                                        list(self.networks.values()),
 293                                        scheduler_hints)
 294
 295     def get_neutron_info(self):
 296         if not self.shade_client:
 297             self.shade_client = get_shade_client()
 298
 299         networks = self.shade_client.list_networks()
 300         for network in self.networks.values():
 301             for neutron_net in (net for net in networks if net.name == network.stack_name):
 302                     network.segmentation_id = neutron_net.get('provider:segmentation_id')
 303                     # we already have physical_network
 304                     # network.physical_network = neutron_net.get('provider:physical_network')
 305                     network.network_type = neutron_net.get('provider:network_type')
 306                     network.neutron_info = neutron_net
 307
 308     def _create_new_stack(self, heat_template):
 309          try:
 310              return heat_template.create(block=True,
 311                                          timeout=self.heat_timeout)
 312          except KeyboardInterrupt:
 313              raise y_exc.StackCreationInterrupt
 314          except:
 315              LOG.exception("stack failed")
 316              # let the other failures happen, we want stack trace
 317              raise
 318
 319     def _retrieve_existing_stack(self, stack_name):
 320         stack = HeatStack(stack_name)
 321         if stack.get():
 322             return stack
 323         else:
 324             LOG.warning("Stack %s does not exist", self.name)
 325             return None
 326
 327     def deploy(self):
 328         """deploys template into a stack using cloud"""
 329         LOG.info("Deploying context '%s' START", self.name)
 330
 331         heat_template = HeatTemplate(self.name, self.template_file,
 332                                      self.heat_parameters)
 333
 334         if self.template_file is None:
 335             self._add_resources_to_template(heat_template)
 336
 337         if self._flags.no_setup:
 338             # Try to get an existing stack, returns a stack or None
 339             self.stack = self._retrieve_existing_stack(self.name)
 340             if not self.stack:
 341                 self.stack = self._create_new_stack(heat_template)
 342
 343         else:
 344             self.stack = self._create_new_stack(heat_template)
 345
 346         # TODO: use Neutron to get segmentation-id
 347         self.get_neutron_info()
 348
 349         # copy some vital stack output into server objects
 350         for server in self.servers:
 351             if server.ports:
 352                 self.add_server_port(server)
 353
 354             if server.floating_ip:
 355                 server.public_ip = \
 356                     self.stack.outputs[server.floating_ip["stack_name"]]
 357
 358         LOG.info("Deploying context '%s' DONE", self.name)
 359
 360     @staticmethod
 361     def _port_net_is_existing(port_info):
 362         net_flags = port_info.get('net_flags', {})
 363         return net_flags.get(consts.IS_EXISTING)
 364
 365     @staticmethod
 366     def _port_net_is_public(port_info):
 367         net_flags = port_info.get('net_flags', {})
 368         return net_flags.get(consts.IS_PUBLIC)
 369
 370     def add_server_port(self, server):
 371         server_ports = server.ports.values()
 372         for server_port in server_ports:
 373             port_info = server_port[0]
 374             port_ip = self.stack.outputs[port_info["stack_name"]]
 375             port_net_is_existing = self._port_net_is_existing(port_info)
 376             port_net_is_public = self._port_net_is_public(port_info)
 377             if port_net_is_existing and (port_net_is_public or
 378                                          len(server_ports) == 1):
 379                 server.public_ip = port_ip
 380             if not server.private_ip or len(server_ports) == 1:
 381                 server.private_ip = port_ip
 382
 383         server.interfaces = {}
 384         for network_name, ports in server.ports.items():
 385             for port in ports:
 386                 # port['port'] is either port name from mapping or default network_name
 387                 if self._port_net_is_existing(port):
 388                     continue
 389                 server.interfaces[port['port']] = self.make_interface_dict(network_name,
 390                                                                            port['port'],
 391                                                                            port['stack_name'],
 392                                                                            self.stack.outputs)
 393                 server.override_ip(network_name, port)
 394
 395     def make_interface_dict(self, network_name, port, stack_name, outputs):
 396         private_ip = outputs[stack_name]
 397         mac_address = outputs[h_join(stack_name, "mac_address")]
 398         # these are attributes of the network, not the port
 399         output_subnet_cidr = outputs[h_join(self.name, network_name,
 400                                             'subnet', 'cidr')]
 401
 402         # these are attributes of the network, not the port
 403         output_subnet_gateway = outputs[h_join(self.name, network_name,
 404                                                'subnet', 'gateway_ip')]
 405
 406         return {
 407             # add default port name
 408             "name": port,
 409             "private_ip": private_ip,
 410             "subnet_id": outputs[h_join(stack_name, "subnet_id")],
 411             "subnet_cidr": output_subnet_cidr,
 412             "network": str(ipaddress.ip_network(output_subnet_cidr).network_address),
 413             "netmask": str(ipaddress.ip_network(output_subnet_cidr).netmask),
 414             "gateway_ip": output_subnet_gateway,
 415             "mac_address": mac_address,
 416             "device_id": outputs[h_join(stack_name, "device_id")],
 417             "network_id": outputs[h_join(stack_name, "network_id")],
 418             # this should be == vld_id for NSB tests
 419             "network_name": network_name,
 420             # to match vnf_generic
 421             "local_mac": mac_address,
 422             "local_ip": private_ip,
 423         }
 424
 425     def _delete_key_file(self):
 426         try:
 427             utils.remove_file(self.key_filename)
 428             utils.remove_file(self.key_filename + ".pub")
 429         except OSError:
 430             LOG.exception("There was an error removing the key file %s",
 431                           self.key_filename)
 432
 433     def undeploy(self):
 434         """undeploys stack from cloud"""
 435         if self._flags.no_teardown:
 436             LOG.info("Undeploying context '%s' SKIP", self.name)
 437             return
 438
 439         if self.stack:
 440             LOG.info("Undeploying context '%s' START", self.name)
 441             self.stack.delete()
 442             self.stack = None
 443             LOG.info("Undeploying context '%s' DONE", self.name)
 444
 445             self._delete_key_file()
 446
 447         super(HeatContext, self).undeploy()
 448
 449     @staticmethod
 450     def generate_routing_table(server):
 451         routes = [
 452             {
 453                 "network": intf["network"],
 454                 "netmask": intf["netmask"],
 455                 "if": name,
 456                 # We have to encode a None gateway as '' for Jinja2 to YAML conversion
 457                 "gateway": intf["gateway_ip"] if intf["gateway_ip"] else '',
 458             }
 459             for name, intf in server.interfaces.items()
 460         ]
 461         return routes
 462
 463     def _get_server(self, attr_name):
 464         """lookup server info by name from context
 465         attr_name: either a name for a server created by yardstick or a dict
 466         with attribute name mapping when using external heat templates
 467         """
 468         if isinstance(attr_name, collections.Mapping):
 469             node_name, cname = self.split_name(attr_name['name'])
 470             if cname is None or cname != self.name:
 471                 return None
 472
 473             # Create a dummy server instance for holding the *_ip attributes
 474             server = Server(node_name, self, {})
 475             server.public_ip = self.stack.outputs.get(
 476                 attr_name.get("public_ip_attr", object()), None)
 477
 478             server.private_ip = self.stack.outputs.get(
 479                 attr_name.get("private_ip_attr", object()), None)
 480         else:
 481             try:
 482                 server = self._server_map[attr_name]
 483             except KeyError:
 484                 attr_name_no_suffix = attr_name.split("-")[0]
 485                 server = self._server_map.get(attr_name_no_suffix, None)
 486             if server is None:
 487                 return None
 488
 489         pkey = pkg_resources.resource_string(
 490             'yardstick.resources',
 491             h_join('files/yardstick_key', self.name)).decode('utf-8')
 492
 493         result = {
 494             "user": server.context.user,
 495             "pkey": pkey,
 496             "private_ip": server.private_ip,
 497             "interfaces": server.interfaces,
 498             "routing_table": self.generate_routing_table(server),
 499             # empty IPv6 routing table
 500             "nd_route_tbl": [],
 501             # we want to save the contex name so we can generate pod.yaml
 502             "name": server.name,
 503         }
 504         # Target server may only have private_ip
 505         if server.public_ip:
 506             result["ip"] = server.public_ip
 507
 508         return result
 509
 510     def _get_network(self, attr_name):
 511         if not isinstance(attr_name, collections.Mapping):
 512             network = self.networks.get(attr_name, None)
 513
 514         else:
 515             # Only take the first key, value
 516             key, value = next(iter(attr_name.items()), (None, None))
 517             if key is None:
 518                 return None
 519             network_iter = (n for n in self.networks.values() if getattr(n, key) == value)
 520             network = next(network_iter, None)
 521
 522         if network is None:
 523             return None
 524
 525         result = {
 526             "name": network.name,
 527             "segmentation_id": network.segmentation_id,
 528             "network_type": network.network_type,
 529             "physical_network": network.physical_network,
 530         }
 531         return result