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, InvalidRSpec
  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.server.threadmanager import ThreadManager
  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, slice_xrn=None):
  39     sliver_id = None
  40     if slice_xrn:
  41         xrn = Xrn(slice_xrn, 'slice')
  42         sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
  43
  44     sliver = Sliver({'slice_id': sliver_id,
  45                      'name': instance.name,
  46                      'type': instance.name,
  47                      'cpus': str(instance.vcpus),
  48                      'memory': str(instance.ram),
  49                      'storage':  str(instance.disk)})
  50     return sliver
  51
  52 def image_to_rspec_disk_image(image):
  53     img = DiskImage()
  54     img['name'] = image['name']
  55     img['description'] = image['name']
  56     img['os'] = image['name']
  57     img['version'] = image['name']
  58     return img
  59
  60 class OSAggregate:
  61
  62     def __init__(self, driver):
  63         self.driver = driver
  64
  65     def get_rspec(self, slice_xrn=None, version=None, options={}):
  66         version_manager = VersionManager()
  67         version = version_manager.get_version(version)
  68         if not slice_xrn:
  69             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  70             nodes = self.get_aggregate_nodes()
  71         else:
  72             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  73             nodes = self.get_slice_nodes(slice_xrn)
  74         rspec = RSpec(version=rspec_version, user_options=options)
  75         rspec.version.add_nodes(nodes)
  76         return rspec.toxml()
  77
  78     def get_availability_zones(self):
  79         # essex release
  80         zones = self.driver.shell.nova_manager.dns_domains.domains()
  81
  82         if not zones:
  83             zones = ['cloud']
  84         else:
  85             zones = [zone.name for zone in zones]
  86         return zones
  87
  88     def get_slice_nodes(self, slice_xrn):
  89         # update nova connection
  90         tenant_name = OSXrn(xrn=slice_xrn, type='slice').get_tenant_name()
  91         self.driver.shell.nova_manager.connect(tenant=tenant_name)
  92
  93         zones = self.get_availability_zones()
  94         name = hrn_to_os_slicename(slice_xrn)
  95         instances = self.driver.shell.nova_manager.servers.findall(name=name)
  96         rspec_nodes = []
  97         for instance in instances:
  98             # determine node urn
  99             node_xrn = instance.metadata.get('component_id')
 100             if not node_xrn:
 101                 node_xrn = OSXrn('cloud', type='node')
 102             else:
 103                 node_xrn = OSXrn(xrn=node_xrn, type='node')
 104
 105             rspec_node = Node()
 106             rspec_node['component_id'] = node_xrn.urn
 107             rspec_node['component_name'] = node_xrn.name
 108             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 109             rspec_node['slivers'] = []
 110
 111             if instance.metadata.get('client_id'):
 112                 rspec_node['client_id'] = instance.metadata.get('client_id')
 113
 114             flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 115             sliver = instance_to_sliver(flavor)
 116             rspec_node['slivers'].append(sliver)
 117             image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 118             if isinstance(image, list) and len(image) > 0:
 119                 image = image[0]
 120             disk_image = image_to_rspec_disk_image(image)
 121             sliver['disk_image'] = [disk_image]
 122
 123             # build interfaces
 124             rspec_node['services'] = []
 125             rspec_node['interfaces'] = []
 126             addresses = instance.addresses
 127             # HACK: public ips are stored in the list of private, but
 128             # this seems wrong. Assume pub ip is the last in the list of
 129             # private ips until openstack bug is fixed.
 130             if addresses.get('private'):
 131                 login = Login({'authentication': 'ssh-keys',
 132                                'hostname': addresses.get('private')[-1]['addr'],
 133                                'port':'22', 'username': 'root'})
 134                 service = Services({'login': login})
 135                 rspec_node['services'].append(service)
 136
 137             for private_ip in addresses.get('private', []):
 138                 if_xrn = PlXrn(auth=self.driver.hrn,
 139                                interface='node%s:eth0' % (instance.hostId))
 140                 interface = Interface({'component_id': if_xrn.urn})
 141                 interface['ips'] =  [{'address': private_ip['addr'],
 142                                      #'netmask': private_ip['network'],
 143                                      'type': private_ip['version']}]
 144                 rspec_node['interfaces'].append(interface)
 145
 146             # slivers always provide the ssh service
 147             for public_ip in addresses.get('public', []):
 148                 login = Login({'authentication': 'ssh-keys',
 149                                'hostname': public_ip['addr'],
 150                                'port':'22', 'username': 'root'})
 151                 service = Services({'login': login})
 152                 rspec_node['services'].append(service)
 153             rspec_nodes.append(rspec_node)
 154         return rspec_nodes
 155
 156     def get_aggregate_nodes(self):
 157         zones = self.get_availability_zones()
 158         # available sliver/instance/vm types
 159         instances = self.driver.shell.nova_manager.flavors.list()
 160         if isinstance(instances, dict):
 161             instances = instances.values()
 162         # available images
 163         images = self.driver.shell.image_manager.get_images_detailed()
 164         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 165         rspec_nodes = []
 166         for zone in zones:
 167             rspec_node = Node()
 168             xrn = OSXrn(zone, type='node')
 169             rspec_node['component_id'] = xrn.urn
 170             rspec_node['component_name'] = xrn.name
 171             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 172             rspec_node['exclusive'] = 'false'
 173             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 174                                                 HardwareType({'name': 'pc'})]
 175             slivers = []
 176             for instance in instances:
 177                 sliver = instance_to_sliver(instance)
 178                 sliver['disk_image'] = disk_images
 179                 slivers.append(sliver)
 180
 181             rspec_node['slivers'] = slivers
 182             rspec_nodes.append(rspec_node)
 183
 184         return rspec_nodes
 185
 186
 187     def create_tenant(self, tenant_name):
 188         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 189         if not tenants:
 190             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 191             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 192         else:
 193             tenant = tenants[0]
 194         return tenant
 195
 196
 197     def create_instance_key(self, slice_hrn, user):
 198         slice_name = Xrn(slice_hrn).leaf
 199         user_name = Xrn(user['urn']).leaf
 200         key_name = "%s_%s" % (slice_name, user_name)
 201         pubkey = user['keys'][0]
 202         key_found = False
 203         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 204         for existing_key in existing_keys:
 205             if existing_key.public_key != pubkey:
 206                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 207             elif existing_key.public_key == pubkey:
 208                 key_found = True
 209
 210         if not key_found:
 211             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 212         return key_name
 213
 214
 215     def create_security_group(self, slicename, fw_rules=[]):
 216         # use default group by default
 217         group_name = 'default'
 218         if isinstance(fw_rules, list) and fw_rules:
 219             # Each sliver get's its own security group.
 220             # Keep security group names unique by appending some random
 221             # characters on end.
 222             random_name = "".join([random.choice(string.letters+string.digits)
 223                                            for i in xrange(6)])
 224             group_name = slicename + random_name
 225             security_group = SecurityGroup(self.driver)
 226             security_group.create_security_group(group_name)
 227             for rule in fw_rules:
 228                 security_group.add_rule_to_group(group_name,
 229                                              protocol = rule.get('protocol'),
 230                                              cidr_ip = rule.get('cidr_ip'),
 231                                              port_range = rule.get('port_range'),
 232                                              icmp_type_code = rule.get('icmp_type_code'))
 233             # Open ICMP by default
 234             security_group.add_rule_to_group(group_name,
 235                                              protocol = "icmp",
 236                                              cidr_ip = "0.0.0.0/0",
 237                                              icmp_type_code = "-1:-1")
 238         return group_name
 239
 240     def add_rule_to_security_group(self, group_name, **kwds):
 241         security_group = SecurityGroup(self.driver)
 242         security_group.add_rule_to_group(group_name=group_name,
 243                                          protocol=kwds.get('protocol'),
 244                                          cidr_ip =kwds.get('cidr_ip'),
 245                                          icmp_type_code = kwds.get('icmp_type_code'))
 246
 247
 248
 249     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 250         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 251         #            '%s, key: %s, name: %s' % \
 252         #            (image_id, flavor_id, key_name, slicename))
 253
 254         # make sure a tenant exists for this slice
 255         tenant = self.create_tenant(tenant_name)
 256
 257         # add the sfa admin user to this tenant and update our nova client connection
 258         # to use these credentials for the rest of this session. This emsures that the instances
 259         # we create will be assigned to the correct tenant.
 260         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 261         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 262         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 263         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 264         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 265         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 266
 267         authorized_keys = "\n".join(pubkeys)
 268         files = {'/root/.ssh/authorized_keys': authorized_keys}
 269         rspec = RSpec(rspec)
 270         requested_instances = defaultdict(list)
 271         # iterate over clouds/zones/nodes
 272         for node in rspec.version.get_nodes_with_slivers():
 273             instances = node.get('slivers', [])
 274             if not instances:
 275                 continue
 276             for instance in instances:
 277                 try:
 278                     metadata = {}
 279                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 280                     image = instance.get('disk_image')
 281                     if image and isinstance(image, list):
 282                         image = image[0]
 283                     else:
 284                         raise InvalidRSpec("Must specify a disk_image for each VM")
 285                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 286                     fw_rules = instance.get('fw_rules', [])
 287                     group_name = self.create_security_group(instance_name, fw_rules)
 288                     metadata['security_groups'] = group_name
 289                     if node.get('component_id'):
 290                         metadata['component_id'] = node['component_id']
 291                     if node.get('client_id'):
 292                         metadata['client_id'] = node['client_id']
 293                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 294                                                             image=image_id,
 295                                                             key_name = key_name,
 296                                                             security_groups = [group_name],
 297                                                             files=files,
 298                                                             meta=metadata,
 299                                                             name=instance_name)
 300                 except Exception, err:
 301                     logger.log_exc(err)
 302
 303
 304
 305     def delete_instances(self, instance_name, tenant_name):
 306
 307         def _delete_security_group(instance):
 308             security_group = instance.metadata.get('security_groups', '')
 309             if security_group:
 310                 manager = SecurityGroup(self.driver)
 311                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 312                 start_time = time.time()
 313                 instance_deleted = False
 314                 while instance_deleted == False and (time.time() - start_time) < timeout:
 315                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 316                     if not inst:
 317                         instance_deleted = True
 318                     time.sleep(.5)
 319                 manager.delete_security_group(security_group)
 320
 321         thread_manager = ThreadManager()
 322         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 323         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 324         for instance in instances:
 325             # destroy instance
 326             self.driver.shell.nova_manager.servers.delete(instance)
 327             # deleate this instance's security groups
 328             thread_manager.run(_delete_security_group, instance)
 329         return 1
 330
 331
 332     def stop_instances(self, instance_name, tenant_name):
 333         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 334         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 335         for instance in instances:
 336             self.driver.shell.nova_manager.servers.pause(instance)
 337         return 1
 338
 339     def update_instances(self, project_name):
 340         pass