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