sfa/openstack/osaggregate.py

   1
   2 import os
   3 import socket
   4 import base64
   5 import string
   6 import random
   7 import time
   8 from collections import defaultdict
   9 from nova.exception import ImageNotFound
  10 from nova.api.ec2.cloud import CloudController
  11 from sfa.util.faults import SfaAPIError, SliverDoesNotExist
  12 from sfa.util.sfatime import utcparse, datetime_to_string, datetime_to_epoch
  13 from sfa.rspecs.rspec import RSpec
  14 from sfa.rspecs.elements.hardware_type import HardwareType
  15 from sfa.rspecs.elements.node import Node
  16 from sfa.rspecs.elements.sliver import Sliver
  17 from sfa.rspecs.elements.login import Login
  18 from sfa.rspecs.elements.disk_image import DiskImage
  19 from sfa.rspecs.elements.services import Services
  20 from sfa.rspecs.elements.interface import Interface
  21 from sfa.util.xrn import Xrn
  22 from sfa.planetlab.plxrn import PlXrn
  23 from sfa.openstack.osxrn import OSXrn, hrn_to_os_slicename
  24 from sfa.rspecs.version_manager import VersionManager
  25 from sfa.openstack.security_group import SecurityGroup
  26 from sfa.util.sfalogging import logger
  27
  28 def pubkeys_to_user_data(pubkeys):
  29     user_data = "#!/bin/bash\n\n"
  30     for pubkey in pubkeys:
  31         pubkey = pubkey.replace('\n', '')
  32         user_data += "echo %s >> /root/.ssh/authorized_keys" % pubkey
  33         user_data += "\n"
  34         user_data += "echo >> /root/.ssh/authorized_keys"
  35         user_data += "\n"
  36     return user_data
  37
  38 def instance_to_sliver(instance, xrn=None):
  39     sliver_urn = None
  40     if slice_xrn:
  41         sliver_xrn = Xrn(xrn=slice_xrn, type='slice', id=instance.id).get_urn()
  42
  43     sliver = Sliver({'slice_id': sliver_urn,
  44                      'name': instance.name,
  45                      'type': instance.name,
  46                      'cpus': str(instance.vcpus),
  47                      'memory': str(instance.ram),
  48                      'storage':  str(instance.disk)})
  49     return sliver
  50
  51 def image_to_rspec_disk_image(image):
  52     img = DiskImage()
  53     img['name'] = image['name']
  54     img['description'] = image['name']
  55     img['os'] = image['name']
  56     img['version'] = image['name']
  57     return img
  58
  59 class OSAggregate:
  60
  61     def __init__(self, driver):
  62         self.driver = driver
  63
  64     def get_availability_zones(self):
  65         zones = self.driver.shell.nova_manager.dns_domains.domains()
  66         if not zones:
  67             zones = ['cloud']
  68         else:
  69             zones = [zone.name for zone in zones]
  70         return zones
  71
  72
  73     def list_resources(self, version=None, options={}):
  74         version_manager = VersionManager()
  75         version = version_manager.get_version(version)
  76         rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  77         rspec = RSpec(version=version, user_options=options)
  78         nodes = self.get_aggregate_nodes()
  79         rspec.version.add_nodes(nodes)
  80         return rspec.toxml()
  81
  82     def describe(self, urns, version=None, options={}):
  83         # update nova connection
  84         tenant_name = OSXrn(xrn=urns[0], type='slice').get_tenant_name()
  85         self.driver.shell.nova_manager.connect(tenant=tenant_name)
  86         instances = self.get_instances(urns)
  87         if len(instances) == 0:
  88             raise SliverDoesNotExist("You have not allocated any slivers here")
  89
  90         geni_slivers = []
  91         rspec_nodes = []
  92         for instance in instances:
  93             rspec_nodes.append(self.instance_to_rspec_node(instance))
  94             geni_slivers.append(self.instance_to_geni_sliver(instance))
  95         version_manager = VersionManager()
  96         version = version_manager.get_version(version)
  97         rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  98         rspec = RSpec(version=version, user_options=options)
  99         rspec.version.add_nodes(rspec_nodes)
 100         result = {'geni_urn': Xrn(urns[0]).get_urn(),
 101                   'geni_rspec': rspec.toxml(),
 102                   'geni_slivers': geni_slivers}
 103
 104         return result
 105
 106     def get_instances(self, urns):
 107         # parse slice names and sliver ids
 108         names = set()
 109         ids = set()
 110         for urn in urns:
 111             xrn = OSXrn(xrn=urn)
 112             names.add(xrn.get_slice_name())
 113             if xrn.id:
 114                 ids.add(xrn.id)
 115
 116         # look up instances
 117         instances = []
 118         for name in name:
 119             servers = self.driver.shell.nova_manager.servers.findall(name=name)
 120             instances.extend(servers)
 121
 122         # filter on id
 123         if ids:
 124             instances = [server in servers if server.id in ids]
 125
 126         return instances
 127
 128     def instance_to_rspec_node(self, instance):
 129         # determine node urn
 130         node_xrn = instance.metadata.get('component_id')
 131         if not node_xrn:
 132             node_xrn = OSXrn('cloud', type='node')
 133         else:
 134             node_xrn = OSXrn(xrn=node_xrn, type='node')
 135
 136         rspec_node = Node()
 137         rspec_node['component_id'] = node_xrn.urn
 138         rspec_node['component_name'] = node_xrn.name
 139         rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 140         rspec_node['sliver_id'] = OSXrn(name=instance.name, type='slice', id=instance.id).get_urn()
 141         if instance.metadata.get('client_id'):
 142             rspec_node['client_id'] = instance.metadata.get('client_id')
 143         flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 144         rspec_node['slivers'] = [self.instance_to_sliver(flavor)]
 145         image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 146         if isinstance(image, list) and len(image) > 0:
 147             image = image[0]
 148         disk_image = image_to_rspec_disk_image(image)
 149         sliver['disk_image'] = [disk_image]
 150
 151         # build interfaces
 152         rspec_node['services'] = []
 153         rspec_node['interfaces'] = []
 154         addresses = instance.addresses
 155         # HACK: public ips are stored in the list of private, but
 156         # this seems wrong. Assume pub ip is the last in the list of
 157         # private ips until openstack bug is fixed.
 158         if addresses.get('private'):
 159             login = Login({'authentication': 'ssh-keys',
 160                            'hostname': addresses.get('private')[-1]['addr'],
 161                            'port':'22', 'username': 'root'})
 162             service = Services({'login': login})
 163             rspec_node['services'].append(service)
 164
 165         for private_ip in addresses.get('private', []):
 166             if_xrn = PlXrn(auth=self.driver.hrn,
 167                            interface='node%s:eth0' % (instance.hostId))
 168             interface = Interface({'component_id': if_xrn.urn})
 169             interface['ips'] =  [{'address': private_ip['addr'],
 170                                  #'netmask': private_ip['network'],
 171                                  'type': private_ip['version']}]
 172             rspec_node['interfaces'].append(interface)
 173
 174         # slivers always provide the ssh service
 175         for public_ip in addresses.get('public', []):
 176             login = Login({'authentication': 'ssh-keys',
 177                            'hostname': public_ip['addr'],
 178                            'port':'22', 'username': 'root'})
 179             service = Services({'login': login})
 180             rspec_node['services'].append(service)
 181         return rspec_node
 182
 183
 184     def instance_to_sliver(self, instance, xrn=None):
 185         if xrn:
 186             xrn = Xrn(xrn=slice_xrn, type='slice', id=instance.id).get_urn()
 187
 188         sliver = Sliver({'sliver_id': xrn.get_urn(),
 189                          'name': instance.name,
 190                          'type': instance.name,
 191                          'cpus': str(instance.vcpus),
 192                          'memory': str(instance.ram),
 193                          'storage':  str(instance.disk)})
 194         return sliver
 195
 196     def instance_to_geni_sliver(self, instance):
 197         op_status = "geni_unknown"
 198         state = instance.state.lower()
 199         if state == 'active':
 200             op_status = 'geni_ready'
 201         elif state == 'building':
 202             op_status = 'geni_configuring'
 203         elif state == 'failed':
 204             op_status =' geni_failed'
 205
 206         urn = OSXrn(name=instance.name, type='slice', id=instance.id).get_urn()
 207         # required fields
 208         geni_sliver = {'geni_sliver_urn': urn,
 209                        'geni_expires': None,
 210                        'geni_allocation_status': 'geni_provisioned',
 211                        'geni_operational_status': op_status,
 212                        'geni_error': None,
 213                        'plos_created_at': datetime_to_string(utcparse(instance.created)),
 214                        'plos_sliver_type': self.shell.nova_manager.flavors.find(id=instance.flavor['id']).name,
 215                         }
 216
 217
 218         return geni_sliver
 219
 220     def get_aggregate_nodes(self):
 221         zones = self.get_availability_zones()
 222         # available sliver/instance/vm types
 223         instances = self.driver.shell.nova_manager.flavors.list()
 224         if isinstance(instances, dict):
 225             instances = instances.values()
 226         # available images
 227         images = self.driver.shell.image_manager.get_images_detailed()
 228         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 229         rspec_nodes = []
 230         for zone in zones:
 231             rspec_node = Node()
 232             xrn = OSXrn(zone, type='node')
 233             rspec_node['component_id'] = xrn.urn
 234             rspec_node['component_name'] = xrn.name
 235             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 236             rspec_node['exclusive'] = 'false'
 237             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 238                                                 HardwareType({'name': 'pc'})]
 239             slivers = []
 240             for instance in instances:
 241                 sliver = self.instance_to_sliver(instance)
 242                 sliver['disk_image'] = disk_images
 243                 slivers.append(sliver)
 244
 245             rspec_node['slivers'] = slivers
 246             rspec_nodes.append(rspec_node)
 247
 248         return rspec_nodes
 249
 250     def create_tenant(self, tenant_name):
 251         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 252         if not tenants:
 253             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 254             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 255         else:
 256             tenant = tenants[0]
 257         return tenant
 258
 259     def create_instance_key(self, slice_hrn, user):
 260         slice_name = Xrn(slice_hrn).leaf
 261         user_name = Xrn(user['urn']).leaf
 262         key_name = "%s_%s" % (slice_name, user_name)
 263         pubkey = user['keys'][0]
 264         key_found = False
 265         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 266         for existing_key in existing_keys:
 267             if existing_key.public_key != pubkey:
 268                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 269             elif existing_key.public_key == pubkey:
 270                 key_found = True
 271
 272         if not key_found:
 273             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 274         return key_name
 275
 276
 277     def create_security_group(self, slicename, fw_rules=[]):
 278         # use default group by default
 279         group_name = 'default'
 280         if isinstance(fw_rules, list) and fw_rules:
 281             # Each sliver get's its own security group.
 282             # Keep security group names unique by appending some random
 283             # characters on end.
 284             random_name = "".join([random.choice(string.letters+string.digits)
 285                                            for i in xrange(6)])
 286             group_name = slicename + random_name
 287             security_group = SecurityGroup(self.driver)
 288             security_group.create_security_group(group_name)
 289             for rule in fw_rules:
 290                 security_group.add_rule_to_group(group_name,
 291                                              protocol = rule.get('protocol'),
 292                                              cidr_ip = rule.get('cidr_ip'),
 293                                              port_range = rule.get('port_range'),
 294                                              icmp_type_code = rule.get('icmp_type_code'))
 295         return group_name
 296
 297     def add_rule_to_security_group(self, group_name, **kwds):
 298         security_group = SecurityGroup(self.driver)
 299         security_group.add_rule_to_group(group_name=group_name,
 300                                          protocol=kwds.get('protocol'),
 301                                          cidr_ip =kwds.get('cidr_ip'),
 302                                          icmp_type_code = kwds.get('icmp_type_code'))
 303
 304
 305
 306     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 307         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 308         #            '%s, key: %s, name: %s' % \
 309         #            (image_id, flavor_id, key_name, slicename))
 310
 311         # make sure a tenant exists for this slice
 312         tenant = self.create_tenant(tenant_name)
 313
 314         # add the sfa admin user to this tenant and update our nova client connection
 315         # to use these credentials for the rest of this session. This emsures that the instances
 316         # we create will be assigned to the correct tenant.
 317         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 318         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 319         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 320         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 321         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 322         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 323
 324         authorized_keys = "\n".join(pubkeys)
 325         files = {'/root/.ssh/authorized_keys': authorized_keys}
 326         rspec = RSpec(rspec)
 327         requested_instances = defaultdict(list)
 328         # iterate over clouds/zones/nodes
 329         for node in rspec.version.get_nodes_with_slivers():
 330             instances = node.get('slivers', [])
 331             if not instances:
 332                 continue
 333             for instance in instances:
 334                 try:
 335                     metadata = {}
 336                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 337                     image = instance.get('disk_image')
 338                     if image and isinstance(image, list):
 339                         image = image[0]
 340                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 341                     fw_rules = instance.get('fw_rules', [])
 342                     group_name = self.create_security_group(instance_name, fw_rules)
 343                     metadata['security_groups'] = group_name
 344                     if node.get('component_id'):
 345                         metadata['component_id'] = node['component_id']
 346                     if node.get('client_id'):
 347                         metadata['client_id'] = node['client_id']
 348                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 349                                                             image=image_id,
 350                                                             key_name = key_name,
 351                                                             security_groups = [group_name],
 352                                                             files=files,
 353                                                             meta=metadata,
 354                                                             name=instance_name)
 355                 except Exception, err:
 356                     logger.log_exc(err)
 357
 358
 359
 360     def delete_instance(self, tenant_name, instance_name, id=None):
 361
 362         def _delete_security_group(instance):
 363             security_group = instance.metadata.get('security_groups', '')
 364             if security_group:
 365                 manager = SecurityGroup(self.driver)
 366                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 367                 start_time = time.time()
 368                 instance_deleted = False
 369                 while instance_deleted == False and (time.time() - start_time) < timeout:
 370                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 371                     if not inst:
 372                         instance_deleted = True
 373                     time.sleep(.5)
 374                 manager.delete_security_group(security_group)
 375
 376         thread_manager = ThreadManager()
 377         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 378         args = {'name': instance_name}
 379         if id:
 380             args['id'] = id
 381         instances = self.driver.shell.nova_manager.servers.findall(**args)
 382         security_group_manager = SecurityGroup(self.driver)
 383         for instance in instances:
 384             # destroy instance
 385             self.driver.shell.nova_manager.servers.delete(instance)
 386             # deleate this instance's security groups
 387             thread_manager.run(_delete_security_group, instance)
 388         return 1
 389
 390     def stop_instances(self, instance_name, tenant_name, id=None):
 391         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 392         args = {'name': instance_name}
 393         if id:
 394             args['id'] = id
 395         instances = self.driver.shell.nova_manager.servers.findall(**args)
 396         for instance in instances:
 397             self.driver.shell.nova_manager.servers.pause(instance)
 398         return 1
 399
 400     def start_instances(self, instance_name, tenant_name, id=None):
 401         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 402         args = {'name': instance_name}
 403         if id:
 404             args['id'] = id
 405         instances = self.driver.shell.nova_manager.servers.findall(**args)
 406         for instance in instances:
 407             self.driver.shell.nova_manager.servers.resume(instance)
 408         return 1
 409
 410     def restart_instances(self, instacne_name, tenant_name, id=None):
 411         self.stop_instances(instance_name, tenant_name, id)
 412         self.start_instances(instance_name, tenant_name, id)
 413         return 1
 414
 415     def update_instances(self, project_name):
 416         pass