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.server.threadmanager import ThreadManager
  25 from sfa.util.sfalogging import logger
  26
  27 def pubkeys_to_user_data(pubkeys):
  28     user_data = "#!/bin/bash\n\n"
  29     for pubkey in pubkeys:
  30         pubkey = pubkey.replace('\n', '')
  31         user_data += "echo %s >> /root/.ssh/authorized_keys" % pubkey
  32         user_data += "\n"
  33         user_data += "echo >> /root/.ssh/authorized_keys"
  34         user_data += "\n"
  35     return user_data
  36
  37 def instance_to_sliver(instance, slice_xrn=None):
  38     sliver_id = None
  39     if slice_xrn:
  40         xrn = Xrn(slice_xrn, 'slice')
  41         sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
  42
  43     sliver = Sliver({'slice_id': sliver_id,
  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_rspec(self, slice_xrn=None, version=None, options={}):
  65         version_manager = VersionManager()
  66         version = version_manager.get_version(version)
  67         if not slice_xrn:
  68             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  69             nodes = self.get_aggregate_nodes()
  70         else:
  71             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  72             nodes = self.get_slice_nodes(slice_xrn)
  73         rspec = RSpec(version=rspec_version, user_options=options)
  74         rspec.version.add_nodes(nodes)
  75         return rspec.toxml()
  76
  77     def get_availability_zones(self):
  78         # essex release
  79         zones = self.driver.shell.nova_manager.dns_domains.domains()
  80
  81         if not zones:
  82             zones = ['cloud']
  83         else:
  84             zones = [zone.name for zone in zones]
  85         return zones
  86
  87     def get_slice_nodes(self, slice_xrn):
  88         # update nova connection
  89         tenant_name = OSXrn(xrn=slice_xrn, type='slice').get_tenant_name()
  90         self.driver.shell.nova_manager.connect(tenant=tenant_name)
  91
  92         zones = self.get_availability_zones()
  93         name = hrn_to_os_slicename(slice_xrn)
  94         instances = self.driver.shell.nova_manager.servers.findall(name=name)
  95         node_dict = {}
  96         for instance in instances:
  97             # determine node urn
  98             node_xrn = instance.metadata.get('component_id')
  99             if not node_xrn:
 100                 node_xrn = OSXrn('cloud', type='node')
 101             else:
 102                 node_xrn = OSXrn(xrn=node_xrn, type='node')
 103
 104             if not node_xrn.urn in node_dict:
 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                 node_dict[node_xrn.urn] = rspec_node
 111             else:
 112                 rspec_node = node_dict[node_xrn.urn]
 113
 114             if instance.metadata.get('client_id'):
 115                 rspec_node['client_id'] = instance.metadata.get('client_id')
 116
 117             flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 118             sliver = instance_to_sliver(flavor)
 119             rspec_node['slivers'].append(sliver)
 120             image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 121             if isinstance(image, list) and len(image) > 0:
 122                 image = image[0]
 123             disk_image = image_to_rspec_disk_image(image)
 124             sliver['disk_image'] = [disk_image]
 125
 126             # build interfaces
 127             rspec_node['services'] = []
 128             rspec_node['interfaces'] = []
 129             addresses = instance.addresses
 130             # HACK: public ips are stored in the list of private, but
 131             # this seems wrong. Assume pub ip is the last in the list of
 132             # private ips until openstack bug is fixed.
 133             if addresses.get('private'):
 134                 login = Login({'authentication': 'ssh-keys',
 135                                'hostname': addresses.get('private')[-1]['addr'],
 136                                'port':'22', 'username': 'root'})
 137                 service = Services({'login': login})
 138                 rspec_node['services'].append(service)
 139
 140             for private_ip in addresses.get('private', []):
 141                 if_xrn = PlXrn(auth=self.driver.hrn,
 142                                interface='node%s:eth0' % (instance.hostId))
 143                 interface = Interface({'component_id': if_xrn.urn})
 144                 interface['ips'] =  [{'address': private_ip['addr'],
 145                                      #'netmask': private_ip['network'],
 146                                      'type': private_ip['version']}]
 147                 rspec_node['interfaces'].append(interface)
 148
 149             # slivers always provide the ssh service
 150             for public_ip in addresses.get('public', []):
 151                 login = Login({'authentication': 'ssh-keys',
 152                                'hostname': public_ip['addr'],
 153                                'port':'22', 'username': 'root'})
 154                 service = Services({'login': login})
 155                 rspec_node['services'].append(service)
 156             rspec_nodes.append(rspec_node)
 157         return node_dict.values()
 158
 159     def get_aggregate_nodes(self):
 160         zones = self.get_availability_zones()
 161         # available sliver/instance/vm types
 162         instances = self.driver.shell.nova_manager.flavors.list()
 163         if isinstance(instances, dict):
 164             instances = instances.values()
 165         # available images
 166         images = self.driver.shell.image_manager.get_images_detailed()
 167         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 168         rspec_nodes = []
 169         for zone in zones:
 170             rspec_node = Node()
 171             xrn = OSXrn(zone, type='node')
 172             rspec_node['component_id'] = xrn.urn
 173             rspec_node['component_name'] = xrn.name
 174             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 175             rspec_node['exclusive'] = 'false'
 176             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 177                                                 HardwareType({'name': 'pc'})]
 178             slivers = []
 179             for instance in instances:
 180                 sliver = instance_to_sliver(instance)
 181                 sliver['disk_image'] = disk_images
 182                 slivers.append(sliver)
 183
 184             rspec_node['slivers'] = slivers
 185             rspec_nodes.append(rspec_node)
 186
 187         return rspec_nodes
 188
 189
 190     def create_tenant(self, tenant_name):
 191         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 192         if not tenants:
 193             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 194             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 195         else:
 196             tenant = tenants[0]
 197         return tenant
 198
 199
 200     def create_instance_key(self, slice_hrn, user):
 201         slice_name = Xrn(slice_hrn).leaf
 202         user_name = Xrn(user['urn']).leaf
 203         key_name = "%s_%s" % (slice_name, user_name)
 204         pubkey = user['keys'][0]
 205         key_found = False
 206         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 207         for existing_key in existing_keys:
 208             if existing_key.public_key != pubkey:
 209                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 210             elif existing_key.public_key == pubkey:
 211                 key_found = True
 212
 213         if not key_found:
 214             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 215         return key_name
 216
 217
 218     def create_security_group(self, slicename, fw_rules=[]):
 219         # use default group by default
 220         group_name = 'default'
 221         if isinstance(fw_rules, list) and fw_rules:
 222             # Each sliver get's its own security group.
 223             # Keep security group names unique by appending some random
 224             # characters on end.
 225             random_name = "".join([random.choice(string.letters+string.digits)
 226                                            for i in xrange(6)])
 227             group_name = slicename + random_name
 228             security_group = SecurityGroup(self.driver)
 229             security_group.create_security_group(group_name)
 230             for rule in fw_rules:
 231                 security_group.add_rule_to_group(group_name,
 232                                              protocol = rule.get('protocol'),
 233                                              cidr_ip = rule.get('cidr_ip'),
 234                                              port_range = rule.get('port_range'),
 235                                              icmp_type_code = rule.get('icmp_type_code'))
 236         return group_name
 237
 238     def add_rule_to_security_group(self, group_name, **kwds):
 239         security_group = SecurityGroup(self.driver)
 240         security_group.add_rule_to_group(group_name=group_name,
 241                                          protocol=kwds.get('protocol'),
 242                                          cidr_ip =kwds.get('cidr_ip'),
 243                                          icmp_type_code = kwds.get('icmp_type_code'))
 244
 245
 246
 247     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 248         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 249         #            '%s, key: %s, name: %s' % \
 250         #            (image_id, flavor_id, key_name, slicename))
 251
 252         # make sure a tenant exists for this slice
 253         tenant = self.create_tenant(tenant_name)
 254
 255         # add the sfa admin user to this tenant and update our nova client connection
 256         # to use these credentials for the rest of this session. This emsures that the instances
 257         # we create will be assigned to the correct tenant.
 258         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 259         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 260         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 261         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 262         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 263         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 264
 265         authorized_keys = "\n".join(pubkeys)
 266         files = {'/root/.ssh/authorized_keys': authorized_keys}
 267         rspec = RSpec(rspec)
 268         requested_instances = defaultdict(list)
 269         # iterate over clouds/zones/nodes
 270         for node in rspec.version.get_nodes_with_slivers():
 271             instances = node.get('slivers', [])
 272             if not instances:
 273                 continue
 274             for instance in instances:
 275                 try:
 276                     metadata = {}
 277                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 278                     image = instance.get('disk_image')
 279                     if image and isinstance(image, list):
 280                         image = image[0]
 281                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 282                     fw_rules = instance.get('fw_rules', [])
 283                     group_name = self.create_security_group(instance_name, fw_rules)
 284                     metadata['security_groups'] = group_name
 285                     if node.get('component_id'):
 286                         metadata['component_id'] = node['component_id']
 287                     if node.get('client_id'):
 288                         metadata['client_id'] = node['client_id']
 289                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 290                                                             image=image_id,
 291                                                             key_name = key_name,
 292                                                             security_groups = [group_name],
 293                                                             files=files,
 294                                                             meta=metadata,
 295                                                             name=instance_name)
 296                 except Exception, err:
 297                     logger.log_exc(err)
 298
 299
 300
 301     def delete_instances(self, instance_name, tenant_name):
 302
 303         def _delete_security_group(instance):
 304             security_group = instance.metadata.get('security_groups', '')
 305             if security_group:
 306                 manager = SecurityGroup(self.driver)
 307                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 308                 start_time = time.time()
 309                 instance_deleted = False
 310                 while instance_deleted == False and (time.time() - start_time) < timeout:
 311                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 312                     if not inst:
 313                         instance_deleted = True
 314                 manager.delete_security_group(security_group)
 315
 316         thread_manager = ThreadManager()
 317         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 318         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 319         for instance in instances:
 320             # destroy instance
 321             self.driver.shell.nova_manager.servers.delete(instance)
 322             # deleate this instance's security groups
 323             thread_manager.run(_delete_security_group, instance)
 324         return 1
 325
 326
 327     def stop_instances(self, instance_name, tenant_name):
 328         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 329         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 330         for instance in instances:
 331             self.driver.shell.nova_manager.servers.pause(instance)
 332         return 1
 333
 334     def update_instances(self, project_name):
 335         pass