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