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 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.openstack_utils import get_neutron_client
  28 from yardstick.orchestrator.heat import HeatTemplate, get_short_key_uuid
  29 from yardstick.common.constants import YARDSTICK_ROOT_PATH
  30 from yardstick.ssh import SSH
  31
  32 LOG = logging.getLogger(__name__)
  33
  34 DEFAULT_HEAT_TIMEOUT = 3600
  35
  36
  37 def join_args(sep, *args):
  38     return sep.join(args)
  39
  40
  41 def h_join(*args):
  42     return '-'.join(args)
  43
  44
  45 class HeatContext(Context):
  46     """Class that represents a context in the logical model"""
  47
  48     __context_type__ = "Heat"
  49
  50     def __init__(self):
  51         self.name = None
  52         self.stack = None
  53         self.networks = OrderedDict()
  54         self.heat_timeout = None
  55         self.servers = []
  56         self.placement_groups = []
  57         self.server_groups = []
  58         self.keypair_name = None
  59         self.secgroup_name = None
  60         self._server_map = {}
  61         self.attrs = {}
  62         self._image = None
  63         self._flavor = None
  64         self.flavors = set()
  65         self._user = None
  66         self.template_file = None
  67         self.heat_parameters = None
  68         self.neutron_client = None
  69         # generate an uuid to identify yardstick_key
  70         # the first 8 digits of the uuid will be used
  71         self.key_uuid = uuid.uuid4()
  72         self.heat_timeout = None
  73         self.key_filename = ''.join(
  74             [YARDSTICK_ROOT_PATH, 'yardstick/resources/files/yardstick_key-',
  75              get_short_key_uuid(self.key_uuid)])
  76         super(HeatContext, self).__init__()
  77
  78     @staticmethod
  79     def assign_external_network(networks):
  80         sorted_networks = sorted(networks.items())
  81         external_network = os.environ.get("EXTERNAL_NETWORK", "net04_ext")
  82
  83         have_external_network = any(net.get("external_network") for net in networks.values())
  84         if sorted_networks and not have_external_network:
  85             # no external net defined, assign it to first network using os.environ
  86             sorted_networks[0][1]["external_network"] = external_network
  87
  88         return sorted_networks
  89
  90     def init(self, attrs):
  91         """initializes itself from the supplied arguments"""
  92         self.name = attrs["name"]
  93
  94         self._user = attrs.get("user")
  95
  96         self.template_file = attrs.get("heat_template")
  97         if self.template_file:
  98             self.heat_parameters = attrs.get("heat_parameters")
  99             return
 100
 101         self.keypair_name = h_join(self.name, "key")
 102         self.secgroup_name = h_join(self.name, "secgroup")
 103
 104         self._image = attrs.get("image")
 105
 106         self._flavor = attrs.get("flavor")
 107
 108         self.heat_timeout = attrs.get("timeout", DEFAULT_HEAT_TIMEOUT)
 109
 110         self.placement_groups = [PlacementGroup(name, self, pg_attrs["policy"])
 111                                  for name, pg_attrs in attrs.get(
 112                                  "placement_groups", {}).items()]
 113
 114         self.server_groups = [ServerGroup(name, self, sg_attrs["policy"])
 115                               for name, sg_attrs in attrs.get(
 116                               "server_groups", {}).items()]
 117
 118         # we have to do this first, because we are injecting external_network
 119         # into the dict
 120         sorted_networks = self.assign_external_network(attrs["networks"])
 121
 122         self.networks = OrderedDict(
 123             (name, Network(name, self, net_attrs)) for name, net_attrs in
 124             sorted_networks)
 125
 126         for name, server_attrs in sorted(attrs["servers"].items()):
 127             server = Server(name, self, server_attrs)
 128             self.servers.append(server)
 129             self._server_map[server.dn] = server
 130
 131         self.attrs = attrs
 132         SSH.gen_keys(self.key_filename)
 133
 134     @property
 135     def image(self):
 136         """returns application's default image name"""
 137         return self._image
 138
 139     @property
 140     def flavor(self):
 141         """returns application's default flavor name"""
 142         return self._flavor
 143
 144     @property
 145     def user(self):
 146         """return login user name corresponding to image"""
 147         return self._user
 148
 149     def _add_resources_to_template(self, template):
 150         """add to the template the resources represented by this context"""
 151
 152         if self.flavor:
 153             if isinstance(self.flavor, dict):
 154                 flavor = self.flavor.setdefault("name", self.name + "-flavor")
 155                 template.add_flavor(**self.flavor)
 156                 self.flavors.add(flavor)
 157
 158         template.add_keypair(self.keypair_name, self.key_uuid)
 159         template.add_security_group(self.secgroup_name)
 160
 161         for network in self.networks.values():
 162             template.add_network(network.stack_name,
 163                                  network.physical_network,
 164                                  network.provider,
 165                                  network.segmentation_id,
 166                                  network.port_security_enabled)
 167             template.add_subnet(network.subnet_stack_name, network.stack_name,
 168                                 network.subnet_cidr,
 169                                 network.enable_dhcp,
 170                                 network.gateway_ip)
 171
 172             if network.router:
 173                 template.add_router(network.router.stack_name,
 174                                     network.router.external_gateway_info,
 175                                     network.subnet_stack_name)
 176                 template.add_router_interface(network.router.stack_if_name,
 177                                               network.router.stack_name,
 178                                               network.subnet_stack_name)
 179
 180         # create a list of servers sorted by increasing no of placement groups
 181         list_of_servers = sorted(self.servers,
 182                                  key=lambda s: len(s.placement_groups))
 183
 184         #
 185         # add servers with scheduler hints derived from placement groups
 186         #
 187
 188         # create list of servers with availability policy
 189         availability_servers = []
 190         for server in list_of_servers:
 191             for pg in server.placement_groups:
 192                 if pg.policy == "availability":
 193                     availability_servers.append(server)
 194                     break
 195
 196         for server in availability_servers:
 197             if isinstance(server.flavor, dict):
 198                 try:
 199                     self.flavors.add(server.flavor["name"])
 200                 except KeyError:
 201                     self.flavors.add(h_join(server.stack_name, "flavor"))
 202
 203         # add servers with availability policy
 204         added_servers = []
 205         for server in availability_servers:
 206             scheduler_hints = {}
 207             for pg in server.placement_groups:
 208                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 209             # workaround for openstack nova bug, check JIRA: YARDSTICK-200
 210             # for details
 211             if len(availability_servers) == 2:
 212                 if not scheduler_hints["different_host"]:
 213                     scheduler_hints.pop("different_host", None)
 214                     server.add_to_template(template,
 215                                            list(self.networks.values()),
 216                                            scheduler_hints)
 217                 else:
 218                     scheduler_hints["different_host"] = \
 219                         scheduler_hints["different_host"][0]
 220                     server.add_to_template(template,
 221                                            list(self.networks.values()),
 222                                            scheduler_hints)
 223             else:
 224                 server.add_to_template(template,
 225                                        list(self.networks.values()),
 226                                        scheduler_hints)
 227             added_servers.append(server.stack_name)
 228
 229         # create list of servers with affinity policy
 230         affinity_servers = []
 231         for server in list_of_servers:
 232             for pg in server.placement_groups:
 233                 if pg.policy == "affinity":
 234                     affinity_servers.append(server)
 235                     break
 236
 237         # add servers with affinity policy
 238         for server in affinity_servers:
 239             if server.stack_name in added_servers:
 240                 continue
 241             scheduler_hints = {}
 242             for pg in server.placement_groups:
 243                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 244             server.add_to_template(template, list(self.networks.values()),
 245                                    scheduler_hints)
 246             added_servers.append(server.stack_name)
 247
 248         # add server group
 249         for sg in self.server_groups:
 250             template.add_server_group(sg.name, sg.policy)
 251
 252         # add remaining servers with no placement group configured
 253         for server in list_of_servers:
 254             # TODO placement_group and server_group should combine
 255             if not server.placement_groups:
 256                 scheduler_hints = {}
 257                 # affinity/anti-aff server group
 258                 sg = server.server_group
 259                 if sg:
 260                     scheduler_hints["group"] = {'get_resource': sg.name}
 261                 server.add_to_template(template,
 262                                        list(self.networks.values()),
 263                                        scheduler_hints)
 264
 265     def get_neutron_info(self):
 266         if not self.neutron_client:
 267             self.neutron_client = get_neutron_client()
 268
 269         networks = self.neutron_client.list_networks()
 270         for network in self.networks.values():
 271             for neutron_net in networks['networks']:
 272                 if neutron_net['name'] == network.stack_name:
 273                     network.segmentation_id = neutron_net.get('provider:segmentation_id')
 274                     # we already have physical_network
 275                     # network.physical_network = neutron_net.get('provider:physical_network')
 276                     network.network_type = neutron_net.get('provider:network_type')
 277                     network.neutron_info = neutron_net
 278
 279     def deploy(self):
 280         """deploys template into a stack using cloud"""
 281         print("Deploying context '%s'" % self.name)
 282
 283         heat_template = HeatTemplate(self.name, self.template_file,
 284                                      self.heat_parameters)
 285
 286         if self.template_file is None:
 287             self._add_resources_to_template(heat_template)
 288
 289         try:
 290             self.stack = heat_template.create(block=True,
 291                                               timeout=self.heat_timeout)
 292         except KeyboardInterrupt:
 293             raise SystemExit("\nStack create interrupted")
 294         except:
 295             LOG.exception("stack failed")
 296             # let the other failures happen, we want stack trace
 297             raise
 298
 299         # TODO: use Neutron to get segmentation-id
 300         self.get_neutron_info()
 301
 302         # copy some vital stack output into server objects
 303         for server in self.servers:
 304             if server.ports:
 305                 self.add_server_port(server)
 306
 307             if server.floating_ip:
 308                 server.public_ip = \
 309                     self.stack.outputs[server.floating_ip["stack_name"]]
 310
 311         print("Context '%s' deployed" % self.name)
 312
 313     def add_server_port(self, server):
 314         # TODO(hafe) can only handle one internal network for now
 315         port = next(iter(server.ports.values()))
 316         server.private_ip = self.stack.outputs[port["stack_name"]]
 317         server.interfaces = {}
 318         for network_name, port in server.ports.items():
 319             server.interfaces[network_name] = self.make_interface_dict(
 320                 network_name, port['stack_name'], self.stack.outputs)
 321
 322     def make_interface_dict(self, network_name, stack_name, outputs):
 323         private_ip = outputs[stack_name]
 324         mac_address = outputs[h_join(stack_name, "mac_address")]
 325         output_subnet_cidr = outputs[h_join(self.name, network_name,
 326                                             'subnet', 'cidr')]
 327
 328         output_subnet_gateway = outputs[h_join(self.name, network_name,
 329                                                'subnet', 'gateway_ip')]
 330
 331         return {
 332             "private_ip": private_ip,
 333             "subnet_id": outputs[h_join(stack_name, "subnet_id")],
 334             "subnet_cidr": output_subnet_cidr,
 335             "network": str(ipaddress.ip_network(output_subnet_cidr).network_address),
 336             "netmask": str(ipaddress.ip_network(output_subnet_cidr).netmask),
 337             "gateway_ip": output_subnet_gateway,
 338             "mac_address": mac_address,
 339             "device_id": outputs[h_join(stack_name, "device_id")],
 340             "network_id": outputs[h_join(stack_name, "network_id")],
 341             "network_name": network_name,
 342             # to match vnf_generic
 343             "local_mac": mac_address,
 344             "local_ip": private_ip,
 345             "vld_id": self.networks[network_name].vld_id,
 346         }
 347
 348     def undeploy(self):
 349         """undeploys stack from cloud"""
 350         if self.stack:
 351             print("Undeploying context '%s'" % self.name)
 352             self.stack.delete()
 353             self.stack = None
 354             print("Context '%s' undeployed" % self.name)
 355
 356         if os.path.exists(self.key_filename):
 357             try:
 358                 os.remove(self.key_filename)
 359                 os.remove(self.key_filename + ".pub")
 360             except OSError:
 361                 LOG.exception("Key filename %s", self.key_filename)
 362
 363         super(HeatContext, self).undeploy()
 364
 365     @staticmethod
 366     def generate_routing_table(server):
 367         routes = [
 368             {
 369                 "network": intf["network"],
 370                 "netmask": intf["netmask"],
 371                 "if": name,
 372                 # We have to encode a None gateway as '' for Jinja2 to YAML conversion
 373                 "gateway": intf["gateway_ip"] if intf["gateway_ip"] else '',
 374             }
 375             for name, intf in server.interfaces.items()
 376         ]
 377         return routes
 378
 379     def _get_server(self, attr_name):
 380         """lookup server info by name from context
 381         attr_name: either a name for a server created by yardstick or a dict
 382         with attribute name mapping when using external heat templates
 383         """
 384         key_filename = pkg_resources.resource_filename(
 385             'yardstick.resources',
 386             h_join('files/yardstick_key', get_short_key_uuid(self.key_uuid)))
 387
 388         if isinstance(attr_name, collections.Mapping):
 389             node_name, cname = self.split_name(attr_name['name'])
 390             if cname is None or cname != self.name:
 391                 return None
 392
 393             # Create a dummy server instance for holding the *_ip attributes
 394             server = Server(node_name, self, {})
 395             server.public_ip = self.stack.outputs.get(
 396                 attr_name.get("public_ip_attr", object()), None)
 397
 398             server.private_ip = self.stack.outputs.get(
 399                 attr_name.get("private_ip_attr", object()), None)
 400         else:
 401             server = self._server_map.get(attr_name, None)
 402             if server is None:
 403                 return None
 404
 405         result = {
 406             "user": server.context.user,
 407             "key_filename": key_filename,
 408             "private_ip": server.private_ip,
 409             "interfaces": server.interfaces,
 410             "routing_table": self.generate_routing_table(server),
 411             # empty IPv6 routing table
 412             "nd_route_tbl": [],
 413         }
 414         # Target server may only have private_ip
 415         if server.public_ip:
 416             result["ip"] = server.public_ip
 417
 418         return result
 419
 420     def _get_network(self, attr_name):
 421         if not isinstance(attr_name, collections.Mapping):
 422             network = self.networks.get(attr_name, None)
 423
 424         else:
 425             # Don't generalize too much  Just support vld_id
 426             vld_id = attr_name.get('vld_id', {})
 427             network_iter = (n for n in self.networks.values() if n.vld_id == vld_id)
 428             network = next(network_iter, None)
 429
 430         if network is None:
 431             return None
 432
 433         result = {
 434             "name": network.name,
 435             "vld_id": network.vld_id,
 436             "segmentation_id": network.segmentation_id,
 437             "network_type": network.network_type,
 438             "physical_network": network.physical_network,
 439         }
 440         return result