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_neutron_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.utils import source_env
  33 from yardstick.ssh import SSH
  34
  35 LOG = logging.getLogger(__name__)
  36
  37 DEFAULT_HEAT_TIMEOUT = 3600
  38
  39
  40 def join_args(sep, *args):
  41     return sep.join(args)
  42
  43
  44 def h_join(*args):
  45     return '-'.join(args)
  46
  47
  48 class HeatContext(Context):
  49     """Class that represents a context in the logical model"""
  50
  51     __context_type__ = "Heat"
  52
  53     def __init__(self):
  54         self.stack = None
  55         self.networks = OrderedDict()
  56         self.heat_timeout = None
  57         self.servers = []
  58         self.placement_groups = []
  59         self.server_groups = []
  60         self.keypair_name = None
  61         self.secgroup_name = None
  62         self._server_map = {}
  63         self.attrs = {}
  64         self._image = None
  65         self._flavor = None
  66         self.flavors = set()
  67         self._user = None
  68         self.template_file = None
  69         self.heat_parameters = None
  70         self.neutron_client = None
  71         self.heat_timeout = None
  72         self.key_filename = None
  73         super(HeatContext, self).__init__()
  74
  75     @staticmethod
  76     def assign_external_network(networks):
  77         sorted_networks = sorted(networks.items())
  78         external_network = os.environ.get("EXTERNAL_NETWORK", "net04_ext")
  79
  80         have_external_network = any(net.get("external_network") for net in networks.values())
  81         if not have_external_network:
  82             # try looking for mgmt network first
  83             try:
  84                 networks['mgmt']["external_network"] = external_network
  85             except KeyError:
  86                 if sorted_networks:
  87                     # otherwise assign it to first network using os.environ
  88                     sorted_networks[0][1]["external_network"] = external_network
  89
  90         return sorted_networks
  91
  92     def init(self, attrs):
  93         """Initializes itself from the supplied arguments"""
  94         super(HeatContext, self).init(attrs)
  95
  96         self.check_environment()
  97         self._user = attrs.get("user")
  98
  99         self.template_file = attrs.get("heat_template")
 100
 101         self.heat_timeout = attrs.get("timeout", DEFAULT_HEAT_TIMEOUT)
 102         if self.template_file:
 103             self.heat_parameters = attrs.get("heat_parameters")
 104             return
 105
 106         self.keypair_name = h_join(self.name, "key")
 107         self.secgroup_name = h_join(self.name, "secgroup")
 108
 109         self._image = attrs.get("image")
 110
 111         self._flavor = attrs.get("flavor")
 112
 113         self.placement_groups = [PlacementGroup(name, self, pg_attrs["policy"])
 114                                  for name, pg_attrs in attrs.get(
 115                                  "placement_groups", {}).items()]
 116
 117         self.server_groups = [ServerGroup(name, self, sg_attrs["policy"])
 118                               for name, sg_attrs in attrs.get(
 119                               "server_groups", {}).items()]
 120
 121         # we have to do this first, because we are injecting external_network
 122         # into the dict
 123         sorted_networks = self.assign_external_network(attrs["networks"])
 124
 125         self.networks = OrderedDict(
 126             (name, Network(name, self, net_attrs)) for name, net_attrs in
 127             sorted_networks)
 128
 129         for name, server_attrs in sorted(attrs["servers"].items()):
 130             server = Server(name, self, server_attrs)
 131             self.servers.append(server)
 132             self._server_map[server.dn] = server
 133
 134         self.attrs = attrs
 135
 136         self.key_filename = ''.join(
 137             [consts.YARDSTICK_ROOT_PATH,
 138              'yardstick/resources/files/yardstick_key-',
 139               self.name])
 140         # Permissions may have changed since creation; this can be fixed. If we
 141         # overwrite the file, we lose future access to VMs using this key.
 142         # As long as the file exists, even if it is unreadable, keep it intact
 143         if not os.path.exists(self.key_filename):
 144             SSH.gen_keys(self.key_filename)
 145
 146     def check_environment(self):
 147         try:
 148             os.environ['OS_AUTH_URL']
 149         except KeyError:
 150             try:
 151                 source_env(consts.OPENRC)
 152             except IOError as e:
 153                 if e.errno != errno.EEXIST:
 154                     LOG.error('OPENRC file not found')
 155                     raise
 156                 else:
 157                     LOG.error('OS_AUTH_URL not found')
 158
 159     @property
 160     def image(self):
 161         """returns application's default image name"""
 162         return self._image
 163
 164     @property
 165     def flavor(self):
 166         """returns application's default flavor name"""
 167         return self._flavor
 168
 169     @property
 170     def user(self):
 171         """return login user name corresponding to image"""
 172         return self._user
 173
 174     def _add_resources_to_template(self, template):
 175         """add to the template the resources represented by this context"""
 176
 177         if self.flavor:
 178             if isinstance(self.flavor, dict):
 179                 flavor = self.flavor.setdefault("name", self.name + "-flavor")
 180                 template.add_flavor(**self.flavor)
 181                 self.flavors.add(flavor)
 182
 183         template.add_keypair(self.keypair_name, self.name)
 184         template.add_security_group(self.secgroup_name)
 185
 186         for network in self.networks.values():
 187             template.add_network(network.stack_name,
 188                                  network.physical_network,
 189                                  network.provider,
 190                                  network.segmentation_id,
 191                                  network.port_security_enabled,
 192                                  network.network_type)
 193             template.add_subnet(network.subnet_stack_name, network.stack_name,
 194                                 network.subnet_cidr,
 195                                 network.enable_dhcp,
 196                                 network.gateway_ip)
 197
 198             if network.router:
 199                 template.add_router(network.router.stack_name,
 200                                     network.router.external_gateway_info,
 201                                     network.subnet_stack_name)
 202                 template.add_router_interface(network.router.stack_if_name,
 203                                               network.router.stack_name,
 204                                               network.subnet_stack_name)
 205
 206         # create a list of servers sorted by increasing no of placement groups
 207         list_of_servers = sorted(self.servers,
 208                                  key=lambda s: len(s.placement_groups))
 209
 210         #
 211         # add servers with scheduler hints derived from placement groups
 212         #
 213
 214         # create list of servers with availability policy
 215         availability_servers = []
 216         for server in list_of_servers:
 217             for pg in server.placement_groups:
 218                 if pg.policy == "availability":
 219                     availability_servers.append(server)
 220                     break
 221
 222         for server in availability_servers:
 223             if isinstance(server.flavor, dict):
 224                 try:
 225                     self.flavors.add(server.flavor["name"])
 226                 except KeyError:
 227                     self.flavors.add(h_join(server.stack_name, "flavor"))
 228
 229         # add servers with availability policy
 230         added_servers = []
 231         for server in availability_servers:
 232             scheduler_hints = {}
 233             for pg in server.placement_groups:
 234                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 235             # workaround for openstack nova bug, check JIRA: YARDSTICK-200
 236             # for details
 237             if len(availability_servers) == 2:
 238                 if not scheduler_hints["different_host"]:
 239                     scheduler_hints.pop("different_host", None)
 240                     server.add_to_template(template,
 241                                            list(self.networks.values()),
 242                                            scheduler_hints)
 243                 else:
 244                     scheduler_hints["different_host"] = \
 245                         scheduler_hints["different_host"][0]
 246                     server.add_to_template(template,
 247                                            list(self.networks.values()),
 248                                            scheduler_hints)
 249             else:
 250                 server.add_to_template(template,
 251                                        list(self.networks.values()),
 252                                        scheduler_hints)
 253             added_servers.append(server.stack_name)
 254
 255         # create list of servers with affinity policy
 256         affinity_servers = []
 257         for server in list_of_servers:
 258             for pg in server.placement_groups:
 259                 if pg.policy == "affinity":
 260                     affinity_servers.append(server)
 261                     break
 262
 263         # add servers with affinity policy
 264         for server in affinity_servers:
 265             if server.stack_name in added_servers:
 266                 continue
 267             scheduler_hints = {}
 268             for pg in server.placement_groups:
 269                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 270             server.add_to_template(template, list(self.networks.values()),
 271                                    scheduler_hints)
 272             added_servers.append(server.stack_name)
 273
 274         # add server group
 275         for sg in self.server_groups:
 276             template.add_server_group(sg.name, sg.policy)
 277
 278         # add remaining servers with no placement group configured
 279         for server in list_of_servers:
 280             # TODO placement_group and server_group should combine
 281             if not server.placement_groups:
 282                 scheduler_hints = {}
 283                 # affinity/anti-aff server group
 284                 sg = server.server_group
 285                 if sg:
 286                     scheduler_hints["group"] = {'get_resource': sg.name}
 287                 server.add_to_template(template,
 288                                        list(self.networks.values()),
 289                                        scheduler_hints)
 290
 291     def get_neutron_info(self):
 292         if not self.neutron_client:
 293             self.neutron_client = get_neutron_client()
 294
 295         networks = self.neutron_client.list_networks()
 296         for network in self.networks.values():
 297             for neutron_net in networks['networks']:
 298                 if neutron_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         self.stack = self._create_new_stack(heat_template)
 335
 336         # TODO: use Neutron to get segmentation-id
 337         self.get_neutron_info()
 338
 339         # copy some vital stack output into server objects
 340         for server in self.servers:
 341             if server.ports:
 342                 self.add_server_port(server)
 343
 344             if server.floating_ip:
 345                 server.public_ip = \
 346                     self.stack.outputs[server.floating_ip["stack_name"]]
 347
 348         LOG.info("Deploying context '%s' DONE", self.name)
 349
 350     def add_server_port(self, server):
 351         # use private ip from first port in first network
 352         try:
 353             private_port = next(iter(server.ports.values()))[0]
 354         except IndexError:
 355             LOG.exception("Unable to find first private port in %s", server.ports)
 356             raise
 357         server.private_ip = self.stack.outputs[private_port["stack_name"]]
 358         server.interfaces = {}
 359         for network_name, ports in server.ports.items():
 360             for port in ports:
 361                 # port['port'] is either port name from mapping or default network_name
 362                 server.interfaces[port['port']] = self.make_interface_dict(network_name,
 363                                                                            port['port'],
 364                                                                            port['stack_name'],
 365                                                                            self.stack.outputs)
 366                 server.override_ip(network_name, port)
 367
 368     def make_interface_dict(self, network_name, port, stack_name, outputs):
 369         private_ip = outputs[stack_name]
 370         mac_address = outputs[h_join(stack_name, "mac_address")]
 371         # these are attributes of the network, not the port
 372         output_subnet_cidr = outputs[h_join(self.name, network_name,
 373                                             'subnet', 'cidr')]
 374
 375         # these are attributes of the network, not the port
 376         output_subnet_gateway = outputs[h_join(self.name, network_name,
 377                                                'subnet', 'gateway_ip')]
 378
 379         return {
 380             # add default port name
 381             "name": port,
 382             "private_ip": private_ip,
 383             "subnet_id": outputs[h_join(stack_name, "subnet_id")],
 384             "subnet_cidr": output_subnet_cidr,
 385             "network": str(ipaddress.ip_network(output_subnet_cidr).network_address),
 386             "netmask": str(ipaddress.ip_network(output_subnet_cidr).netmask),
 387             "gateway_ip": output_subnet_gateway,
 388             "mac_address": mac_address,
 389             "device_id": outputs[h_join(stack_name, "device_id")],
 390             "network_id": outputs[h_join(stack_name, "network_id")],
 391             # this should be == vld_id for NSB tests
 392             "network_name": network_name,
 393             # to match vnf_generic
 394             "local_mac": mac_address,
 395             "local_ip": private_ip,
 396         }
 397
 398     def undeploy(self):
 399         """undeploys stack from cloud"""
 400         if self.stack:
 401             LOG.info("Undeploying context '%s' START", self.name)
 402             self.stack.delete()
 403             self.stack = None
 404             LOG.info("Undeploying context '%s' DONE", self.name)
 405
 406         if os.path.exists(self.key_filename):
 407             try:
 408                 os.remove(self.key_filename)
 409                 os.remove(self.key_filename + ".pub")
 410             except OSError:
 411                 LOG.exception("Key filename %s", self.key_filename)
 412
 413         super(HeatContext, self).undeploy()
 414
 415     @staticmethod
 416     def generate_routing_table(server):
 417         routes = [
 418             {
 419                 "network": intf["network"],
 420                 "netmask": intf["netmask"],
 421                 "if": name,
 422                 # We have to encode a None gateway as '' for Jinja2 to YAML conversion
 423                 "gateway": intf["gateway_ip"] if intf["gateway_ip"] else '',
 424             }
 425             for name, intf in server.interfaces.items()
 426         ]
 427         return routes
 428
 429     def _get_server(self, attr_name):
 430         """lookup server info by name from context
 431         attr_name: either a name for a server created by yardstick or a dict
 432         with attribute name mapping when using external heat templates
 433         """
 434         if isinstance(attr_name, collections.Mapping):
 435             node_name, cname = self.split_name(attr_name['name'])
 436             if cname is None or cname != self.name:
 437                 return None
 438
 439             # Create a dummy server instance for holding the *_ip attributes
 440             server = Server(node_name, self, {})
 441             server.public_ip = self.stack.outputs.get(
 442                 attr_name.get("public_ip_attr", object()), None)
 443
 444             server.private_ip = self.stack.outputs.get(
 445                 attr_name.get("private_ip_attr", object()), None)
 446         else:
 447             server = self._server_map.get(attr_name, None)
 448             if server is None:
 449                 return None
 450
 451         pkey = pkg_resources.resource_string(
 452             'yardstick.resources',
 453             h_join('files/yardstick_key', self.name)).decode('utf-8')
 454
 455         result = {
 456             "user": server.context.user,
 457             "pkey": pkey,
 458             "private_ip": server.private_ip,
 459             "interfaces": server.interfaces,
 460             "routing_table": self.generate_routing_table(server),
 461             # empty IPv6 routing table
 462             "nd_route_tbl": [],
 463             # we want to save the contex name so we can generate pod.yaml
 464             "name": server.name,
 465         }
 466         # Target server may only have private_ip
 467         if server.public_ip:
 468             result["ip"] = server.public_ip
 469
 470         return result
 471
 472     def _get_network(self, attr_name):
 473         if not isinstance(attr_name, collections.Mapping):
 474             network = self.networks.get(attr_name, None)
 475
 476         else:
 477             # Only take the first key, value
 478             key, value = next(iter(attr_name.items()), (None, None))
 479             if key is None:
 480                 return None
 481             network_iter = (n for n in self.networks.values() if getattr(n, key) == value)
 482             network = next(network_iter, None)
 483
 484         if network is None:
 485             return None
 486
 487         result = {
 488             "name": network.name,
 489             "segmentation_id": network.segmentation_id,
 490             "network_type": network.network_type,
 491             "physical_network": network.physical_network,
 492         }
 493         return result