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