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         if instance.metadata.get('client_id'):
 141             rspec_node['client_id'] = instance.metadata.get('client_id')
 142         flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 143         rspec_node['slivers'] = [self.instance_to_sliver(flavor)]
 144         image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 145         if isinstance(image, list) and len(image) > 0:
 146             image = image[0]
 147         disk_image = image_to_rspec_disk_image(image)
 148         sliver['disk_image'] = [disk_image]
 149
 150         # build interfaces
 151         rspec_node['services'] = []
 152         rspec_node['interfaces'] = []
 153         addresses = instance.addresses
 154         # HACK: public ips are stored in the list of private, but
 155         # this seems wrong. Assume pub ip is the last in the list of
 156         # private ips until openstack bug is fixed.
 157         if addresses.get('private'):
 158             login = Login({'authentication': 'ssh-keys',
 159                            'hostname': addresses.get('private')[-1]['addr'],
 160                            'port':'22', 'username': 'root'})
 161             service = Services({'login': login})
 162             rspec_node['services'].append(service)
 163
 164         for private_ip in addresses.get('private', []):
 165             if_xrn = PlXrn(auth=self.driver.hrn,
 166                            interface='node%s:eth0' % (instance.hostId))
 167             interface = Interface({'component_id': if_xrn.urn})
 168             interface['ips'] =  [{'address': private_ip['addr'],
 169                                  #'netmask': private_ip['network'],
 170                                  'type': private_ip['version']}]
 171             rspec_node['interfaces'].append(interface)
 172
 173         # slivers always provide the ssh service
 174         for public_ip in addresses.get('public', []):
 175             login = Login({'authentication': 'ssh-keys',
 176                            'hostname': public_ip['addr'],
 177                            'port':'22', 'username': 'root'})
 178             service = Services({'login': login})
 179             rspec_node['services'].append(service)
 180         return rspec_node
 181
 182
 183     def instance_to_sliver(self, instance, xrn=None):
 184         if xrn:
 185             xrn = Xrn(xrn=slice_xrn, type='slice', id=instance.id).get_urn()
 186
 187         sliver = Sliver({'sliver_id': xrn.get_urn(),
 188                          'name': instance.name,
 189                          'type': instance.name,
 190                          'cpus': str(instance.vcpus),
 191                          'memory': str(instance.ram),
 192                          'storage':  str(instance.disk)})
 193         return sliver
 194
 195     def instance_to_geni_sliver(self, instance):
 196         op_status = "geni_unknown"
 197         state = instance.state.lower()
 198         if state == 'active':
 199             op_status = 'geni_ready'
 200         elif state == 'building':
 201             op_status = 'geni_configuring'
 202         elif state == 'failed':
 203             op_status =' geni_failed'
 204
 205         urn = OSXrn(name=instance.name, type='slice', id=instance.id).get_urn()
 206         # required fields
 207         geni_sliver = {'geni_sliver_urn': urn,
 208                        'geni_expires': None,
 209                        'geni_allocation_status': 'geni_provisioned',
 210                        'geni_operational_status': op_status,
 211                        'geni_error': None,
 212                        'plos_created_at': datetime_to_string(utcparse(instance.created)),
 213                        'plos_sliver_type': self.shell.nova_manager.flavors.find(id=instance.flavor['id']).name,
 214                         }
 215
 216
 217         return geni_sliver
 218
 219     def get_aggregate_nodes(self):
 220         zones = self.get_availability_zones()
 221         # available sliver/instance/vm types
 222         instances = self.driver.shell.nova_manager.flavors.list()
 223         if isinstance(instances, dict):
 224             instances = instances.values()
 225         # available images
 226         images = self.driver.shell.image_manager.get_images_detailed()
 227         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 228         rspec_nodes = []
 229         for zone in zones:
 230             rspec_node = Node()
 231             xrn = OSXrn(zone, type='node')
 232             rspec_node['component_id'] = xrn.urn
 233             rspec_node['component_name'] = xrn.name
 234             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 235             rspec_node['exclusive'] = 'false'
 236             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 237                                                 HardwareType({'name': 'pc'})]
 238             slivers = []
 239             for instance in instances:
 240                 sliver = self.instance_to_sliver(instance)
 241                 sliver['disk_image'] = disk_images
 242                 slivers.append(sliver)
 243
 244             rspec_node['slivers'] = slivers
 245             rspec_nodes.append(rspec_node)
 246
 247         return rspec_nodes
 248
 249     def create_tenant(self, tenant_name):
 250         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 251         if not tenants:
 252             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 253             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 254         else:
 255             tenant = tenants[0]
 256         return tenant
 257
 258     def create_instance_key(self, slice_hrn, user):
 259         slice_name = Xrn(slice_hrn).leaf
 260         user_name = Xrn(user['urn']).leaf
 261         key_name = "%s_%s" % (slice_name, user_name)
 262         pubkey = user['keys'][0]
 263         key_found = False
 264         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 265         for existing_key in existing_keys:
 266             if existing_key.public_key != pubkey:
 267                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 268             elif existing_key.public_key == pubkey:
 269                 key_found = True
 270
 271         if not key_found:
 272             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 273         return key_name
 274
 275
 276     def create_security_group(self, slicename, fw_rules=[]):
 277         # use default group by default
 278         group_name = 'default'
 279         if isinstance(fw_rules, list) and fw_rules:
 280             # Each sliver get's its own security group.
 281             # Keep security group names unique by appending some random
 282             # characters on end.
 283             random_name = "".join([random.choice(string.letters+string.digits)
 284                                            for i in xrange(6)])
 285             group_name = slicename + random_name
 286             security_group = SecurityGroup(self.driver)
 287             security_group.create_security_group(group_name)
 288             for rule in fw_rules:
 289                 security_group.add_rule_to_group(group_name,
 290                                              protocol = rule.get('protocol'),
 291                                              cidr_ip = rule.get('cidr_ip'),
 292                                              port_range = rule.get('port_range'),
 293                                              icmp_type_code = rule.get('icmp_type_code'))
 294         return group_name
 295
 296     def add_rule_to_security_group(self, group_name, **kwds):
 297         security_group = SecurityGroup(self.driver)
 298         security_group.add_rule_to_group(group_name=group_name,
 299                                          protocol=kwds.get('protocol'),
 300                                          cidr_ip =kwds.get('cidr_ip'),
 301                                          icmp_type_code = kwds.get('icmp_type_code'))
 302
 303
 304
 305     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 306         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 307         #            '%s, key: %s, name: %s' % \
 308         #            (image_id, flavor_id, key_name, slicename))
 309
 310         # make sure a tenant exists for this slice
 311         tenant = self.create_tenant(tenant_name)
 312
 313         # add the sfa admin user to this tenant and update our nova client connection
 314         # to use these credentials for the rest of this session. This emsures that the instances
 315         # we create will be assigned to the correct tenant.
 316         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 317         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 318         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 319         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 320         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 321         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 322
 323         authorized_keys = "\n".join(pubkeys)
 324         files = {'/root/.ssh/authorized_keys': authorized_keys}
 325         rspec = RSpec(rspec)
 326         requested_instances = defaultdict(list)
 327         # iterate over clouds/zones/nodes
 328         for node in rspec.version.get_nodes_with_slivers():
 329             instances = node.get('slivers', [])
 330             if not instances:
 331                 continue
 332             for instance in instances:
 333                 try:
 334                     metadata = {}
 335                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 336                     image = instance.get('disk_image')
 337                     if image and isinstance(image, list):
 338                         image = image[0]
 339                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 340                     fw_rules = instance.get('fw_rules', [])
 341                     group_name = self.create_security_group(instance_name, fw_rules)
 342                     metadata['security_groups'] = group_name
 343                     if node.get('component_id'):
 344                         metadata['component_id'] = node['component_id']
 345                     if node.get('client_id'):
 346                         metadata['client_id'] = node['client_id']
 347                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 348                                                             image=image_id,
 349                                                             key_name = key_name,
 350                                                             security_groups = [group_name],
 351                                                             files=files,
 352                                                             meta=metadata,
 353                                                             name=instance_name)
 354                 except Exception, err:
 355                     logger.log_exc(err)
 356
 357
 358
 359     def delete_instance(self, tenant_name, instance_name, id=None):
 360
 361         def _delete_security_group(instance):
 362             security_group = instance.metadata.get('security_groups', '')
 363             if security_group:
 364                 manager = SecurityGroup(self.driver)
 365                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 366                 start_time = time.time()
 367                 instance_deleted = False
 368                 while instance_deleted == False and (time.time() - start_time) < timeout:
 369                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 370                     if not inst:
 371                         instance_deleted = True
 372                     time.sleep(.5)
 373                 manager.delete_security_group(security_group)
 374
 375         thread_manager = ThreadManager()
 376         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 377         args = {'name': instance_name}
 378         if id:
 379             args['id'] = id
 380         instances = self.driver.shell.nova_manager.servers.findall(**args)
 381         security_group_manager = SecurityGroup(self.driver)
 382         for instance in instances:
 383             # destroy instance
 384             self.driver.shell.nova_manager.servers.delete(instance)
 385             # deleate this instance's security groups
 386             thread_manager.run(_delete_security_group, instance)
 387         return 1
 388
 389     def stop_instances(self, instance_name, tenant_name, id=None):
 390         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 391         args = {'name': instance_name}
 392         if id:
 393             args['id'] = id
 394         instances = self.driver.shell.nova_manager.servers.findall(**args)
 395         for instance in instances:
 396             self.driver.shell.nova_manager.servers.pause(instance)
 397         return 1
 398
 399     def start_instances(self, instance_name, tenant_name, id=None):
 400         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 401         args = {'name': instance_name}
 402         if id:
 403             args['id'] = id
 404         instances = self.driver.shell.nova_manager.servers.findall(**args)
 405         for instance in instances:
 406             self.driver.shell.nova_manager.servers.resume(instance)
 407         return 1
 408
 409     def restart_instances(self, instacne_name, tenant_name, id=None):
 410         self.stop_instances(instance_name, tenant_name, id)
 411         self.start_instances(instance_name, tenant_name, id)
 412         return 1
 413
 414     def update_instances(self, project_name):
 415         pass