sfa/openstack/osaggregate.py

   1
   2 import os
   3 import socket
   4 import base64
   5 import string
   6 import random
   7 from collections import defaultdict
   8 from nova.exception import ImageNotFound
   9 from nova.api.ec2.cloud import CloudController
  10 from sfa.util.faults import SfaAPIError, SliverDoesNotExist
  11 from sfa.util.sfatime import utcparse, datetime_to_string, datetime_to_epoch
  12 from sfa.rspecs.rspec import RSpec
  13 from sfa.rspecs.elements.hardware_type import HardwareType
  14 from sfa.rspecs.elements.node import Node
  15 from sfa.rspecs.elements.sliver import Sliver
  16 from sfa.rspecs.elements.login import Login
  17 from sfa.rspecs.elements.disk_image import DiskImage
  18 from sfa.rspecs.elements.services import Services
  19 from sfa.rspecs.elements.interface import Interface
  20 from sfa.util.xrn import Xrn
  21 from sfa.planetlab.plxrn import PlXrn
  22 from sfa.openstack.osxrn import OSXrn, hrn_to_os_slicename
  23 from sfa.rspecs.version_manager import VersionManager
  24 from sfa.openstack.security_group import SecurityGroup
  25 from sfa.util.sfalogging import logger
  26
  27 def pubkeys_to_user_data(pubkeys):
  28     user_data = "#!/bin/bash\n\n"
  29     for pubkey in pubkeys:
  30         pubkey = pubkey.replace('\n', '')
  31         user_data += "echo %s >> /root/.ssh/authorized_keys" % pubkey
  32         user_data += "\n"
  33         user_data += "echo >> /root/.ssh/authorized_keys"
  34         user_data += "\n"
  35     return user_data
  36
  37 def instance_to_sliver(instance, xrn=None):
  38     sliver_urn = None
  39     if slice_xrn:
  40         sliver_xrn = Xrn(xrn=slice_xrn, type='slice', id=instance.id).get_urn()
  41
  42     sliver = Sliver({'slice_id': sliver_urn,
  43                      'name': instance.name,
  44                      'type': instance.name,
  45                      'cpus': str(instance.vcpus),
  46                      'memory': str(instance.ram),
  47                      'storage':  str(instance.disk)})
  48     return sliver
  49
  50 def image_to_rspec_disk_image(image):
  51     img = DiskImage()
  52     img['name'] = image['name']
  53     img['description'] = image['name']
  54     img['os'] = image['name']
  55     img['version'] = image['name']
  56     return img
  57
  58 class OSAggregate:
  59
  60     def __init__(self, driver):
  61         self.driver = driver
  62
  63     def get_availability_zones(self):
  64         zones = self.driver.shell.nova_manager.dns_domains.domains()
  65         if not zones:
  66             zones = ['cloud']
  67         else:
  68             zones = [zone.name for zone in zones]
  69         return zones
  70
  71
  72     def list_resources(self, version=None, options={}):
  73         version_manager = VersionManager()
  74         version = version_manager.get_version(version)
  75         rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  76         rspec = RSpec(version=version, user_options=options)
  77         nodes = self.get_aggregate_nodes()
  78         rspec.version.add_nodes(nodes)
  79         return rspec.toxml()
  80
  81     def describe(self, urns, version=None, options={}):
  82         # update nova connection
  83         tenant_name = OSXrn(xrn=urns[0], type='slice').get_tenant_name()
  84         self.driver.shell.nova_manager.connect(tenant=tenant_name)
  85         instances = self.get_instances(urns)
  86         if len(instances) == 0:
  87             raise SliverDoesNotExist("You have not allocated any slivers here")
  88
  89         geni_slivers = []
  90         rspec_nodes = []
  91         for instance in instances:
  92             rspec_nodes.append(self.instance_to_rspec_node(instance))
  93             geni_slivers.append(self.instance_to_geni_sliver(instance))
  94         version_manager = VersionManager()
  95         version = version_manager.get_version(version)
  96         rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  97         rspec = RSpec(version=version, user_options=options)
  98         rspec.version.add_nodes(rspec_nodes)
  99         result = {'geni_urn': Xrn(urns[0]).get_urn(),
 100                   'geni_rspec': rspec.toxml(),
 101                   'geni_slivers': geni_slivers}
 102
 103         return result
 104
 105     def get_instances(self, urns):
 106         # parse slice names and sliver ids
 107         names = set()
 108         ids = set()
 109         for urn in urns:
 110             xrn = OSXrn(xrn=urn)
 111             names.add(xrn.get_slice_name())
 112             if xrn.id:
 113                 ids.add(xrn.id)
 114
 115         # look up instances
 116         instances = []
 117         for name in name:
 118             servers = self.driver.shell.nova_manager.servers.findall(name=name)
 119             instances.extend(servers)
 120
 121         # filter on id
 122         if ids:
 123             instances = [server in servers if server.id in ids]
 124
 125         return instances
 126
 127     def instance_to_rspec_node(self, instance):
 128         # determine node urn
 129         node_xrn = instance.metadata.get('component_id')
 130         if not node_xrn:
 131             node_xrn = OSXrn('cloud', type='node')
 132         else:
 133             node_xrn = OSXrn(xrn=node_xrn, type='node')
 134
 135         rspec_node = Node()
 136         rspec_node['component_id'] = node_xrn.urn
 137         rspec_node['component_name'] = node_xrn.name
 138         rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 139         flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 140         rspec_node['slivers'] = [self.instance_to_sliver(flavor)]
 141         image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 142         if isinstance(image, list) and len(image) > 0:
 143             image = image[0]
 144         disk_image = image_to_rspec_disk_image(image)
 145         sliver['disk_image'] = [disk_image]
 146
 147         # build interfaces
 148         rspec_node['services'] = []
 149         rspec_node['interfaces'] = []
 150         addresses = instance.addresses
 151         # HACK: public ips are stored in the list of private, but
 152         # this seems wrong. Assume pub ip is the last in the list of
 153         # private ips until openstack bug is fixed.
 154         if addresses.get('private'):
 155             login = Login({'authentication': 'ssh-keys',
 156                            'hostname': addresses.get('private')[-1]['addr'],
 157                            'port':'22', 'username': 'root'})
 158             service = Services({'login': login})
 159             rspec_node['services'].append(service)
 160
 161         for private_ip in addresses.get('private', []):
 162             if_xrn = PlXrn(auth=self.driver.hrn,
 163                            interface='node%s:eth0' % (instance.hostId))
 164             interface = Interface({'component_id': if_xrn.urn})
 165             interface['ips'] =  [{'address': private_ip['addr'],
 166                                  #'netmask': private_ip['network'],
 167                                  'type': private_ip['version']}]
 168             rspec_node['interfaces'].append(interface)
 169
 170         # slivers always provide the ssh service
 171         for public_ip in addresses.get('public', []):
 172             login = Login({'authentication': 'ssh-keys',
 173                            'hostname': public_ip['addr'],
 174                            'port':'22', 'username': 'root'})
 175             service = Services({'login': login})
 176             rspec_node['services'].append(service)
 177         return rspec_node
 178
 179
 180     def instance_to_sliver(self, instance, xrn=None):
 181         if xrn:
 182             xrn = Xrn(xrn=slice_xrn, type='slice', id=instance.id).get_urn()
 183
 184         sliver = Sliver({'sliver_id': xrn.get_urn(),
 185                          'name': instance.name,
 186                          'type': instance.name,
 187                          'cpus': str(instance.vcpus),
 188                          'memory': str(instance.ram),
 189                          'storage':  str(instance.disk)})
 190         return sliver
 191
 192     def instance_to_geni_sliver(self, instance):
 193         op_status = "geni_unknown"
 194         state = instance.state.lower()
 195         if state == 'active':
 196             op_status = 'geni_ready'
 197         elif state == 'building':
 198             op_status = 'geni_configuring'
 199         elif state == 'failed':
 200             op_status =' geni_failed'
 201
 202         urn = OSXrn(name=instance.name, type='slice', id=instance.id).get_urn()
 203         # required fields
 204         geni_sliver = {'geni_sliver_urn': urn,
 205                        'geni_expires': None,
 206                        'geni_allocation_status': 'geni_provisioned',
 207                        'geni_operational_status': op_status,
 208                        'geni_error': None,
 209                        'plos_created_at': datetime_to_string(utcparse(instance.created)),
 210                        'plos_sliver_type': self.shell.nova_manager.flavors.find(id=instance.flavor['id']).name,
 211                         }
 212
 213
 214         return geni_sliver
 215
 216     def get_aggregate_nodes(self):
 217         zones = self.get_availability_zones()
 218         # available sliver/instance/vm types
 219         instances = self.driver.shell.nova_manager.flavors.list()
 220         if isinstance(instances, dict):
 221             instances = instances.values()
 222         # available images
 223         images = self.driver.shell.image_manager.get_images_detailed()
 224         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 225         rspec_nodes = []
 226         for zone in zones:
 227             rspec_node = Node()
 228             xrn = OSXrn(zone, type='node')
 229             rspec_node['component_id'] = xrn.urn
 230             rspec_node['component_name'] = xrn.name
 231             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 232             rspec_node['exclusive'] = 'false'
 233             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 234                                                 HardwareType({'name': 'pc'})]
 235             slivers = []
 236             for instance in instances:
 237                 sliver = self.instance_to_sliver(instance)
 238                 sliver['disk_image'] = disk_images
 239                 slivers.append(sliver)
 240
 241             rspec_node['slivers'] = slivers
 242             rspec_nodes.append(rspec_node)
 243
 244         return rspec_nodes
 245
 246     def create_tenant(self, tenant_name):
 247         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 248         if not tenants:
 249             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 250             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 251         else:
 252             tenant = tenants[0]
 253         return tenant
 254
 255     def create_instance_key(self, slice_hrn, user):
 256         slice_name = Xrn(slice_hrn).leaf
 257         user_name = Xrn(user['urn']).leaf
 258         key_name = "%s_%s" % (slice_name, user_name)
 259         pubkey = user['keys'][0]
 260         key_found = False
 261         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 262         for existing_key in existing_keys:
 263             if existing_key.public_key != pubkey:
 264                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 265             elif existing_key.public_key == pubkey:
 266                 key_found = True
 267
 268         if not key_found:
 269             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 270         return key_name
 271
 272
 273     def create_security_group(self, slicename, fw_rules=[]):
 274         # use default group by default
 275         group_name = 'default'
 276         if isinstance(fw_rules, list) and fw_rules:
 277             # Each sliver get's its own security group.
 278             # Keep security group names unique by appending some random
 279             # characters on end.
 280             random_name = "".join([random.choice(string.letters+string.digits)
 281                                            for i in xrange(6)])
 282             group_name = slicename + random_name
 283             security_group = SecurityGroup(self.driver)
 284             security_group.create_security_group(group_name)
 285             for rule in fw_rules:
 286                 security_group.add_rule_to_group(group_name,
 287                                              protocol = rule.get('protocol'),
 288                                              cidr_ip = rule.get('cidr_ip'),
 289                                              port_range = rule.get('port_range'),
 290                                              icmp_type_code = rule.get('icmp_type_code'))
 291         return group_name
 292
 293     def add_rule_to_security_group(self, group_name, **kwds):
 294         security_group = SecurityGroup(self.driver)
 295         security_group.add_rule_to_group(group_name=group_name,
 296                                          protocol=kwds.get('protocol'),
 297                                          cidr_ip =kwds.get('cidr_ip'),
 298                                          icmp_type_code = kwds.get('icmp_type_code'))
 299
 300
 301
 302     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 303         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 304         #            '%s, key: %s, name: %s' % \
 305         #            (image_id, flavor_id, key_name, slicename))
 306
 307         # make sure a tenant exists for this slice
 308         tenant = self.create_tenant(tenant_name)
 309
 310         # add the sfa admin user to this tenant and update our nova client connection
 311         # to use these credentials for the rest of this session. This emsures that the instances
 312         # we create will be assigned to the correct tenant.
 313         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 314         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 315         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 316         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 317         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 318         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 319
 320         authorized_keys = "\n".join(pubkeys)
 321         files = {'/root/.ssh/authorized_keys': authorized_keys}
 322         rspec = RSpec(rspec)
 323         requested_instances = defaultdict(list)
 324         # iterate over clouds/zones/nodes
 325         for node in rspec.version.get_nodes_with_slivers():
 326             instances = node.get('slivers', [])
 327             if not instances:
 328                 continue
 329             for instance in instances:
 330                 try:
 331                     metadata = {}
 332                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 333                     image = instance.get('disk_image')
 334                     if image and isinstance(image, list):
 335                         image = image[0]
 336                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 337                     fw_rules = instance.get('fw_rules', [])
 338                     group_name = self.create_security_group(instance_name, fw_rules)
 339                     metadata['security_groups'] = group_name
 340                     if node.get('component_id'):
 341                         metadata['component_id'] = node['component_id']
 342                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 343                                                             image=image_id,
 344                                                             key_name = key_name,
 345                                                             security_groups = [group_name],
 346                                                             files=files,
 347                                                             meta=metadata,
 348                                                             name=instance_name)
 349                 except Exception, err:
 350                     logger.log_exc(err)
 351
 352
 353
 354     def delete_instances(self, instance_name, tenant_name):
 355         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 356         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 357         security_group_manager = SecurityGroup(self.driver)
 358         for instance in instances:
 359             # deleate this instance's security groups
 360             security_group = instance.metadata.get('security_groups', '')
 361             if security_group:
 362                 # dont delete the default security group
 363                 if security_group != 'default':
 364                     security_group_manager.delete_security_group(security_group)
 365             # destroy instance
 366             self.driver.shell.nova_manager.servers.delete(instance)
 367         return 1
 368
 369     def stop_instances(self, instance_name, tenant_name):
 370         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 371         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 372         for instance in instances:
 373             self.driver.shell.nova_manager.servers.pause(instance)
 374         return 1
 375
 376     def update_instances(self, project_name):
 377         pass