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             template.add_network(network.stack_name,
 189                                  network.physical_network,
 190                                  network.provider,
 191                                  network.segmentation_id,
 192                                  network.port_security_enabled,
 193                                  network.network_type)
 194             template.add_subnet(network.subnet_stack_name, network.stack_name,
 195                                 network.subnet_cidr,
 196                                 network.enable_dhcp,
 197                                 network.gateway_ip)
 198
 199             if network.router:
 200                 template.add_router(network.router.stack_name,
 201                                     network.router.external_gateway_info,
 202                                     network.subnet_stack_name)
 203                 template.add_router_interface(network.router.stack_if_name,
 204                                               network.router.stack_name,
 205                                               network.subnet_stack_name)
 206
 207         # create a list of servers sorted by increasing no of placement groups
 208         list_of_servers = sorted(self.servers,
 209                                  key=lambda s: len(s.placement_groups))
 210
 211         #
 212         # add servers with scheduler hints derived from placement groups
 213         #
 214
 215         # create list of servers with availability policy
 216         availability_servers = []
 217         for server in list_of_servers:
 218             for pg in server.placement_groups:
 219                 if pg.policy == "availability":
 220                     availability_servers.append(server)
 221                     break
 222
 223         for server in availability_servers:
 224             if isinstance(server.flavor, dict):
 225                 try:
 226                     self.flavors.add(server.flavor["name"])
 227                 except KeyError:
 228                     self.flavors.add(h_join(server.stack_name, "flavor"))
 229
 230         # add servers with availability policy
 231         added_servers = []
 232         for server in availability_servers:
 233             scheduler_hints = {}
 234             for pg in server.placement_groups:
 235                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 236             # workaround for openstack nova bug, check JIRA: YARDSTICK-200
 237             # for details
 238             if len(availability_servers) == 2:
 239                 if not scheduler_hints["different_host"]:
 240                     scheduler_hints.pop("different_host", None)
 241                     server.add_to_template(template,
 242                                            list(self.networks.values()),
 243                                            scheduler_hints)
 244                 else:
 245                     scheduler_hints["different_host"] = \
 246                         scheduler_hints["different_host"][0]
 247                     server.add_to_template(template,
 248                                            list(self.networks.values()),
 249                                            scheduler_hints)
 250             else:
 251                 server.add_to_template(template,
 252                                        list(self.networks.values()),
 253                                        scheduler_hints)
 254             added_servers.append(server.stack_name)
 255
 256         # create list of servers with affinity policy
 257         affinity_servers = []
 258         for server in list_of_servers:
 259             for pg in server.placement_groups:
 260                 if pg.policy == "affinity":
 261                     affinity_servers.append(server)
 262                     break
 263
 264         # add servers with affinity policy
 265         for server in affinity_servers:
 266             if server.stack_name in added_servers:
 267                 continue
 268             scheduler_hints = {}
 269             for pg in server.placement_groups:
 270                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 271             server.add_to_template(template, list(self.networks.values()),
 272                                    scheduler_hints)
 273             added_servers.append(server.stack_name)
 274
 275         # add server group
 276         for sg in self.server_groups:
 277             template.add_server_group(sg.name, sg.policy)
 278
 279         # add remaining servers with no placement group configured
 280         for server in list_of_servers:
 281             # TODO placement_group and server_group should combine
 282             if not server.placement_groups:
 283                 scheduler_hints = {}
 284                 # affinity/anti-aff server group
 285                 sg = server.server_group
 286                 if sg:
 287                     scheduler_hints["group"] = {'get_resource': sg.name}
 288                 server.add_to_template(template,
 289                                        list(self.networks.values()),
 290                                        scheduler_hints)
 291
 292     def get_neutron_info(self):
 293         if not self.shade_client:
 294             self.shade_client = get_shade_client()
 295
 296         networks = self.shade_client.list_networks()
 297         for network in self.networks.values():
 298             for neutron_net in (net for net in networks if net.name == network.stack_name):
 299                     network.segmentation_id = neutron_net.get('provider:segmentation_id')
 300                     # we already have physical_network
 301                     # network.physical_network = neutron_net.get('provider:physical_network')
 302                     network.network_type = neutron_net.get('provider:network_type')
 303                     network.neutron_info = neutron_net
 304
 305     def _create_new_stack(self, heat_template):
 306          try:
 307              return heat_template.create(block=True,
 308                                          timeout=self.heat_timeout)
 309          except KeyboardInterrupt:
 310              raise y_exc.StackCreationInterrupt
 311          except:
 312              LOG.exception("stack failed")
 313              # let the other failures happen, we want stack trace
 314              raise
 315
 316     def _retrieve_existing_stack(self, stack_name):
 317         stack = HeatStack(stack_name)
 318         if stack.get():
 319             return stack
 320         else:
 321             LOG.warning("Stack %s does not exist", self.name)
 322             return None
 323
 324     def deploy(self):
 325         """deploys template into a stack using cloud"""
 326         LOG.info("Deploying context '%s' START", self.name)
 327
 328         heat_template = HeatTemplate(self.name, self.template_file,
 329                                      self.heat_parameters)
 330
 331         if self.template_file is None:
 332             self._add_resources_to_template(heat_template)
 333
 334         if self._flags.no_setup:
 335             # Try to get an existing stack, returns a stack or None
 336             self.stack = self._retrieve_existing_stack(self.name)
 337             if not self.stack:
 338                 self.stack = self._create_new_stack(heat_template)
 339
 340         else:
 341             self.stack = self._create_new_stack(heat_template)
 342
 343         # TODO: use Neutron to get segmentation-id
 344         self.get_neutron_info()
 345
 346         # copy some vital stack output into server objects
 347         for server in self.servers:
 348             if server.ports:
 349                 self.add_server_port(server)
 350
 351             if server.floating_ip:
 352                 server.public_ip = \
 353                     self.stack.outputs[server.floating_ip["stack_name"]]
 354
 355         LOG.info("Deploying context '%s' DONE", self.name)
 356
 357     def add_server_port(self, server):
 358         # use private ip from first port in first network
 359         try:
 360             private_port = next(iter(server.ports.values()))[0]
 361         except IndexError:
 362             LOG.exception("Unable to find first private port in %s", server.ports)
 363             raise
 364         server.private_ip = self.stack.outputs[private_port["stack_name"]]
 365         server.interfaces = {}
 366         for network_name, ports in server.ports.items():
 367             for port in ports:
 368                 # port['port'] is either port name from mapping or default network_name
 369                 server.interfaces[port['port']] = self.make_interface_dict(network_name,
 370                                                                            port['port'],
 371                                                                            port['stack_name'],
 372                                                                            self.stack.outputs)
 373                 server.override_ip(network_name, port)
 374
 375     def make_interface_dict(self, network_name, port, stack_name, outputs):
 376         private_ip = outputs[stack_name]
 377         mac_address = outputs[h_join(stack_name, "mac_address")]
 378         # these are attributes of the network, not the port
 379         output_subnet_cidr = outputs[h_join(self.name, network_name,
 380                                             'subnet', 'cidr')]
 381
 382         # these are attributes of the network, not the port
 383         output_subnet_gateway = outputs[h_join(self.name, network_name,
 384                                                'subnet', 'gateway_ip')]
 385
 386         return {
 387             # add default port name
 388             "name": port,
 389             "private_ip": private_ip,
 390             "subnet_id": outputs[h_join(stack_name, "subnet_id")],
 391             "subnet_cidr": output_subnet_cidr,
 392             "network": str(ipaddress.ip_network(output_subnet_cidr).network_address),
 393             "netmask": str(ipaddress.ip_network(output_subnet_cidr).netmask),
 394             "gateway_ip": output_subnet_gateway,
 395             "mac_address": mac_address,
 396             "device_id": outputs[h_join(stack_name, "device_id")],
 397             "network_id": outputs[h_join(stack_name, "network_id")],
 398             # this should be == vld_id for NSB tests
 399             "network_name": network_name,
 400             # to match vnf_generic
 401             "local_mac": mac_address,
 402             "local_ip": private_ip,
 403         }
 404
 405     def _delete_key_file(self):
 406         try:
 407             utils.remove_file(self.key_filename)
 408             utils.remove_file(self.key_filename + ".pub")
 409         except OSError:
 410             LOG.exception("There was an error removing the key file %s",
 411                           self.key_filename)
 412
 413     def undeploy(self):
 414         """undeploys stack from cloud"""
 415         if self._flags.no_teardown:
 416             LOG.info("Undeploying context '%s' SKIP", self.name)
 417             return
 418
 419         if self.stack:
 420             LOG.info("Undeploying context '%s' START", self.name)
 421             self.stack.delete()
 422             self.stack = None
 423             LOG.info("Undeploying context '%s' DONE", self.name)
 424
 425             self._delete_key_file()
 426
 427         super(HeatContext, self).undeploy()
 428
 429     @staticmethod
 430     def generate_routing_table(server):
 431         routes = [
 432             {
 433                 "network": intf["network"],
 434                 "netmask": intf["netmask"],
 435                 "if": name,
 436                 # We have to encode a None gateway as '' for Jinja2 to YAML conversion
 437                 "gateway": intf["gateway_ip"] if intf["gateway_ip"] else '',
 438             }
 439             for name, intf in server.interfaces.items()
 440         ]
 441         return routes
 442
 443     def _get_server(self, attr_name):
 444         """lookup server info by name from context
 445         attr_name: either a name for a server created by yardstick or a dict
 446         with attribute name mapping when using external heat templates
 447         """
 448         if isinstance(attr_name, collections.Mapping):
 449             node_name, cname = self.split_name(attr_name['name'])
 450             if cname is None or cname != self.name:
 451                 return None
 452
 453             # Create a dummy server instance for holding the *_ip attributes
 454             server = Server(node_name, self, {})
 455             server.public_ip = self.stack.outputs.get(
 456                 attr_name.get("public_ip_attr", object()), None)
 457
 458             server.private_ip = self.stack.outputs.get(
 459                 attr_name.get("private_ip_attr", object()), None)
 460         else:
 461             try:
 462                 server = self._server_map[attr_name]
 463             except KeyError:
 464                 attr_name_no_suffix = attr_name.split("-")[0]
 465                 server = self._server_map.get(attr_name_no_suffix, None)
 466             if server is None:
 467                 return None
 468
 469         pkey = pkg_resources.resource_string(
 470             'yardstick.resources',
 471             h_join('files/yardstick_key', self.name)).decode('utf-8')
 472
 473         result = {
 474             "user": server.context.user,
 475             "pkey": pkey,
 476             "private_ip": server.private_ip,
 477             "interfaces": server.interfaces,
 478             "routing_table": self.generate_routing_table(server),
 479             # empty IPv6 routing table
 480             "nd_route_tbl": [],
 481             # we want to save the contex name so we can generate pod.yaml
 482             "name": server.name,
 483         }
 484         # Target server may only have private_ip
 485         if server.public_ip:
 486             result["ip"] = server.public_ip
 487
 488         return result
 489
 490     def _get_network(self, attr_name):
 491         if not isinstance(attr_name, collections.Mapping):
 492             network = self.networks.get(attr_name, None)
 493
 494         else:
 495             # Only take the first key, value
 496             key, value = next(iter(attr_name.items()), (None, None))
 497             if key is None:
 498                 return None
 499             network_iter = (n for n in self.networks.values() if getattr(n, key) == value)
 500             network = next(network_iter, None)
 501
 502         if network is None:
 503             return None
 504
 505         result = {
 506             "name": network.name,
 507             "segmentation_id": network.segmentation_id,
 508             "network_type": network.network_type,
 509             "physical_network": network.physical_network,
 510         }
 511         return result