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 uuid
  17 from collections import OrderedDict
  18
  19 import ipaddress
  20 import paramiko
  21 import pkg_resources
  22
  23 from yardstick.benchmark.contexts.base import Context
  24 from yardstick.benchmark.contexts.model import Network
  25 from yardstick.benchmark.contexts.model import PlacementGroup, ServerGroup
  26 from yardstick.benchmark.contexts.model import Server
  27 from yardstick.benchmark.contexts.model import update_scheduler_hints
  28 from yardstick.common.openstack_utils import get_neutron_client
  29 from yardstick.orchestrator.heat import HeatTemplate, get_short_key_uuid
  30 from yardstick.common.constants import YARDSTICK_ROOT_PATH
  31
  32 LOG = logging.getLogger(__name__)
  33
  34 DEFAULT_HEAT_TIMEOUT = 3600
  35
  36
  37 class HeatContext(Context):
  38     """Class that represents a context in the logical model"""
  39
  40     __context_type__ = "Heat"
  41
  42     def __init__(self):
  43         self.name = None
  44         self.stack = None
  45         self.networks = OrderedDict()
  46         self.servers = []
  47         self.placement_groups = []
  48         self.server_groups = []
  49         self.keypair_name = None
  50         self.secgroup_name = None
  51         self._server_map = {}
  52         self._image = None
  53         self._flavor = None
  54         self.flavors = set()
  55         self._user = None
  56         self.template_file = None
  57         self.heat_parameters = None
  58         self.neutron_client = None
  59         # generate an uuid to identify yardstick_key
  60         # the first 8 digits of the uuid will be used
  61         self.key_uuid = uuid.uuid4()
  62         self.heat_timeout = None
  63         self.key_filename = ''.join(
  64             [YARDSTICK_ROOT_PATH, 'yardstick/resources/files/yardstick_key-',
  65              get_short_key_uuid(self.key_uuid)])
  66         super(HeatContext, self).__init__()
  67
  68     def assign_external_network(self, networks):
  69         sorted_networks = sorted(networks.items())
  70         external_network = os.environ.get("EXTERNAL_NETWORK", "net04_ext")
  71
  72         have_external_network = any(net.get("external_network") for net in networks.values())
  73         if sorted_networks and not have_external_network:
  74             # no external net defined, assign it to first network using os.environ
  75             sorted_networks[0][1]["external_network"] = external_network
  76
  77         self.networks = OrderedDict((name, Network(name, self, attrs))
  78                                     for name, attrs in sorted_networks)
  79
  80     def init(self, attrs):
  81         """initializes itself from the supplied arguments"""
  82         self.name = attrs["name"]
  83
  84         self._user = attrs.get("user")
  85
  86         self.template_file = attrs.get("heat_template")
  87         if self.template_file:
  88             self.heat_parameters = attrs.get("heat_parameters")
  89             return
  90
  91         self.keypair_name = self.name + "-key"
  92         self.secgroup_name = self.name + "-secgroup"
  93
  94         self._image = attrs.get("image")
  95
  96         self._flavor = attrs.get("flavor")
  97
  98         self.heat_timeout = attrs.get("timeout", DEFAULT_HEAT_TIMEOUT)
  99
 100         self.placement_groups = [PlacementGroup(name, self, pgattrs["policy"])
 101                                  for name, pgattrs in attrs.get(
 102                                  "placement_groups", {}).items()]
 103
 104         self.server_groups = [ServerGroup(name, self, sgattrs["policy"])
 105                               for name, sgattrs in attrs.get(
 106                               "server_groups", {}).items()]
 107
 108         # we have to do this first, because we are injecting external_network
 109         # into the dict
 110         self.assign_external_network(attrs["networks"])
 111
 112         for name, serverattrs in sorted(attrs["servers"].items()):
 113             server = Server(name, self, serverattrs)
 114             self.servers.append(server)
 115             self._server_map[server.dn] = server
 116
 117         rsa_key = paramiko.RSAKey.generate(bits=2048, progress_func=None)
 118         rsa_key.write_private_key_file(self.key_filename)
 119         print("Writing %s ..." % self.key_filename)
 120         with open(self.key_filename + ".pub", "w") as pubkey_file:
 121             pubkey_file.write(
 122                 "%s %s\n" % (rsa_key.get_name(), rsa_key.get_base64()))
 123
 124     @property
 125     def image(self):
 126         """returns application's default image name"""
 127         return self._image
 128
 129     @property
 130     def flavor(self):
 131         """returns application's default flavor name"""
 132         return self._flavor
 133
 134     @property
 135     def user(self):
 136         """return login user name corresponding to image"""
 137         return self._user
 138
 139     def _add_resources_to_template(self, template):
 140         """add to the template the resources represented by this context"""
 141
 142         if self.flavor:
 143             if isinstance(self.flavor, dict):
 144                 flavor = self.flavor.setdefault("name", self.name + "-flavor")
 145                 template.add_flavor(**self.flavor)
 146                 self.flavors.add(flavor)
 147
 148         template.add_keypair(self.keypair_name, self.key_uuid)
 149         template.add_security_group(self.secgroup_name)
 150
 151         for network in self.networks.values():
 152             template.add_network(network.stack_name,
 153                                  network.physical_network,
 154                                  network.provider,
 155                                  network.segmentation_id)
 156             template.add_subnet(network.subnet_stack_name, network.stack_name,
 157                                 network.subnet_cidr)
 158
 159             if network.router:
 160                 template.add_router(network.router.stack_name,
 161                                     network.router.external_gateway_info,
 162                                     network.subnet_stack_name)
 163                 template.add_router_interface(network.router.stack_if_name,
 164                                               network.router.stack_name,
 165                                               network.subnet_stack_name)
 166
 167         # create a list of servers sorted by increasing no of placement groups
 168         list_of_servers = sorted(self.servers,
 169                                  key=lambda s: len(s.placement_groups))
 170
 171         #
 172         # add servers with scheduler hints derived from placement groups
 173         #
 174
 175         # create list of servers with availability policy
 176         availability_servers = []
 177         for server in list_of_servers:
 178             for pg in server.placement_groups:
 179                 if pg.policy == "availability":
 180                     availability_servers.append(server)
 181                     break
 182
 183         for server in availability_servers:
 184             if isinstance(server.flavor, dict):
 185                 try:
 186                     self.flavors.add(server.flavor["name"])
 187                 except KeyError:
 188                     self.flavors.add(server.stack_name + "-flavor")
 189
 190         # add servers with availability policy
 191         added_servers = []
 192         for server in availability_servers:
 193             scheduler_hints = {}
 194             for pg in server.placement_groups:
 195                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 196             # workaround for openstack nova bug, check JIRA: YARDSTICK-200
 197             # for details
 198             if len(availability_servers) == 2:
 199                 if not scheduler_hints["different_host"]:
 200                     scheduler_hints.pop("different_host", None)
 201                     server.add_to_template(template,
 202                                            list(self.networks.values()),
 203                                            scheduler_hints)
 204                 else:
 205                     scheduler_hints["different_host"] = \
 206                         scheduler_hints["different_host"][0]
 207                     server.add_to_template(template,
 208                                            list(self.networks.values()),
 209                                            scheduler_hints)
 210             else:
 211                 server.add_to_template(template,
 212                                        list(self.networks.values()),
 213                                        scheduler_hints)
 214             added_servers.append(server.stack_name)
 215
 216         # create list of servers with affinity policy
 217         affinity_servers = []
 218         for server in list_of_servers:
 219             for pg in server.placement_groups:
 220                 if pg.policy == "affinity":
 221                     affinity_servers.append(server)
 222                     break
 223
 224         # add servers with affinity policy
 225         for server in affinity_servers:
 226             if server.stack_name in added_servers:
 227                 continue
 228             scheduler_hints = {}
 229             for pg in server.placement_groups:
 230                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 231             server.add_to_template(template, list(self.networks.values()),
 232                                    scheduler_hints)
 233             added_servers.append(server.stack_name)
 234
 235         # add server group
 236         for sg in self.server_groups:
 237             template.add_server_group(sg.name, sg.policy)
 238
 239         # add remaining servers with no placement group configured
 240         for server in list_of_servers:
 241             # TODO placement_group and server_group should combine
 242             if not server.placement_groups:
 243                 scheduler_hints = {}
 244                 # affinity/anti-aff server group
 245                 sg = server.server_group
 246                 if sg:
 247                     scheduler_hints["group"] = {'get_resource': sg.name}
 248                 server.add_to_template(template,
 249                                        list(self.networks.values()),
 250                                        scheduler_hints)
 251
 252     def get_neutron_info(self):
 253         if not self.neutron_client:
 254             self.neutron_client = get_neutron_client()
 255
 256         networks = self.neutron_client.list_networks()
 257         for network in self.networks.values():
 258             for neutron_net in networks['networks']:
 259                 if neutron_net['name'] == network.stack_name:
 260                     network.segmentation_id = neutron_net.get('provider:segmentation_id')
 261                     # we already have physical_network
 262                     # network.physical_network = neutron_net.get('provider:physical_network')
 263                     network.network_type = neutron_net.get('provider:network_type')
 264                     network.neutron_info = neutron_net
 265
 266     def deploy(self):
 267         """deploys template into a stack using cloud"""
 268         print("Deploying context '%s'" % self.name)
 269
 270         heat_template = HeatTemplate(self.name, self.template_file,
 271                                      self.heat_parameters)
 272
 273         if self.template_file is None:
 274             self._add_resources_to_template(heat_template)
 275
 276         try:
 277             self.stack = heat_template.create(block=True,
 278                                               timeout=self.heat_timeout)
 279         except KeyboardInterrupt:
 280             raise SystemExit("\nStack create interrupted")
 281         except:
 282             LOG.exception("stack failed")
 283             # let the other failures happen, we want stack trace
 284             raise
 285
 286         # TODO: use Neutron to get segementation-id
 287         self.get_neutron_info()
 288
 289         # copy some vital stack output into server objects
 290         for server in self.servers:
 291             if server.ports:
 292                 self.add_server_port(server)
 293
 294             if server.floating_ip:
 295                 server.public_ip = \
 296                     self.stack.outputs[server.floating_ip["stack_name"]]
 297
 298         print("Context '%s' deployed" % self.name)
 299
 300     def add_server_port(self, server):
 301         # TODO(hafe) can only handle one internal network for now
 302         port = next(iter(server.ports.values()))
 303         server.private_ip = self.stack.outputs[port["stack_name"]]
 304         server.interfaces = {}
 305         for network_name, port in server.ports.items():
 306             server.interfaces[network_name] = self.make_interface_dict(
 307                 network_name, port['stack_name'], self.stack.outputs)
 308
 309     def make_interface_dict(self, network_name, stack_name, outputs):
 310         private_ip = outputs[stack_name]
 311         mac_addr = outputs[stack_name + "-mac_address"]
 312         subnet_cidr_key = "-".join([self.name, network_name, 'subnet', 'cidr'])
 313         gateway_key = "-".join([self.name, network_name, 'subnet', 'gateway_ip'])
 314         subnet_cidr = outputs[subnet_cidr_key]
 315         subnet_ip = ipaddress.ip_network(subnet_cidr)
 316         return {
 317             "private_ip": private_ip,
 318             "subnet_id": outputs[stack_name + "-subnet_id"],
 319             "subnet_cidr": subnet_cidr,
 320             "network": str(subnet_ip.network_address),
 321             "netmask": str(subnet_ip.netmask),
 322             "gateway_ip": outputs[gateway_key],
 323             "mac_address": mac_addr,
 324             "device_id": outputs[stack_name + "-device_id"],
 325             "network_id": outputs[stack_name + "-network_id"],
 326             "network_name": network_name,
 327             # to match vnf_generic
 328             "local_mac": mac_addr,
 329             "local_ip": private_ip,
 330             "vld_id": self.networks[network_name].vld_id,
 331         }
 332
 333     def undeploy(self):
 334         """undeploys stack from cloud"""
 335         if self.stack:
 336             print("Undeploying context '%s'" % self.name)
 337             self.stack.delete()
 338             self.stack = None
 339             print("Context '%s' undeployed" % self.name)
 340
 341         if os.path.exists(self.key_filename):
 342             try:
 343                 os.remove(self.key_filename)
 344                 os.remove(self.key_filename + ".pub")
 345             except OSError:
 346                 LOG.exception("Key filename %s", self.key_filename)
 347
 348         super(HeatContext, self).undeploy()
 349
 350     @staticmethod
 351     def generate_routing_table(server):
 352         routes = [
 353             {
 354                 "network": intf["network"],
 355                 "netmask": intf["netmask"],
 356                 "if": name,
 357                 "gateway": intf["gateway_ip"],
 358             }
 359             for name, intf in server.interfaces.items()
 360         ]
 361         return routes
 362
 363     def _get_server(self, attr_name):
 364         """lookup server info by name from context
 365         attr_name: either a name for a server created by yardstick or a dict
 366         with attribute name mapping when using external heat templates
 367         """
 368         key_filename = pkg_resources.resource_filename(
 369             'yardstick.resources',
 370             'files/yardstick_key-' + get_short_key_uuid(self.key_uuid))
 371
 372         if not isinstance(attr_name, collections.Mapping):
 373             server = self._server_map.get(attr_name, None)
 374
 375         else:
 376             cname = attr_name["name"].split(".")[1]
 377             if cname != self.name:
 378                 return None
 379
 380             public_ip = None
 381             private_ip = None
 382             if "public_ip_attr" in attr_name:
 383                 public_ip = self.stack.outputs[attr_name["public_ip_attr"]]
 384             if "private_ip_attr" in attr_name:
 385                 private_ip = self.stack.outputs[
 386                     attr_name["private_ip_attr"]]
 387
 388             # Create a dummy server instance for holding the *_ip attributes
 389             server = Server(attr_name["name"].split(".")[0], self, {})
 390             server.public_ip = public_ip
 391             server.private_ip = private_ip
 392
 393         if server is None:
 394             return None
 395
 396         result = {
 397             "user": server.context.user,
 398             "key_filename": key_filename,
 399             "private_ip": server.private_ip,
 400             "interfaces": server.interfaces,
 401             "routing_table": self.generate_routing_table(server),
 402             # empty IPv6 routing table
 403             "nd_route_tbl": [],
 404         }
 405         # Target server may only have private_ip
 406         if server.public_ip:
 407             result["ip"] = server.public_ip
 408
 409         return result
 410
 411     def _get_network(self, attr_name):
 412         if not isinstance(attr_name, collections.Mapping):
 413             network = self.networks.get(attr_name, None)
 414
 415         else:
 416             # Don't generalize too much  Just support vld_id
 417             vld_id = attr_name.get('vld_id')
 418             if vld_id is None:
 419                 return None
 420
 421             network = next((n for n in self.networks.values() if
 422                            getattr(n, "vld_id", None) == vld_id), None)
 423
 424         if network is None:
 425             return None
 426
 427         result = {
 428             "name": network.name,
 429             "vld_id": network.vld_id,
 430             "segmentation_id": network.segmentation_id,
 431             "network_type": network.network_type,
 432             "physical_network": network.physical_network,
 433         }
 434         return result