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