sfa/openstack/osaggregate.py

   1
   2 import os
   3 import socket
   4 import base64
   5 import string
   6 import random
   7 import time
   8 from collections import defaultdict
   9 from nova.exception import ImageNotFound
  10 from nova.api.ec2.cloud import CloudController
  11 from sfa.util.faults import SfaAPIError, InvalidRSpec
  12 from sfa.rspecs.rspec import RSpec
  13 from sfa.rspecs.elements.hardware_type import HardwareType
  14 from sfa.rspecs.elements.node import Node
  15 from sfa.rspecs.elements.sliver import Sliver
  16 from sfa.rspecs.elements.login import Login
  17 from sfa.rspecs.elements.disk_image import DiskImage
  18 from sfa.rspecs.elements.services import Services
  19 from sfa.rspecs.elements.interface import Interface
  20 from sfa.rspecs.elements.fw_rule import FWRule
  21 from sfa.util.xrn import Xrn
  22 from sfa.planetlab.plxrn import PlXrn
  23 from sfa.openstack.osxrn import OSXrn, hrn_to_os_slicename
  24 from sfa.rspecs.version_manager import VersionManager
  25 from sfa.openstack.security_group import SecurityGroup
  26 from sfa.server.threadmanager import ThreadManager
  27 from sfa.util.sfalogging import logger
  28
  29 def pubkeys_to_user_data(pubkeys):
  30     user_data = "#!/bin/bash\n\n"
  31     for pubkey in pubkeys:
  32         pubkey = pubkey.replace('\n', '')
  33         user_data += "echo %s >> /root/.ssh/authorized_keys" % pubkey
  34         user_data += "\n"
  35         user_data += "echo >> /root/.ssh/authorized_keys"
  36         user_data += "\n"
  37     return user_data
  38
  39 def instance_to_sliver(instance, slice_xrn=None):
  40     sliver_id = None
  41     sliver = Sliver({'name': instance.name,
  42                      'type': instance.name,
  43                      'cpus': str(instance.vcpus),
  44                      'memory': str(instance.ram),
  45                      'storage':  str(instance.disk)})
  46     return sliver
  47
  48 def image_to_rspec_disk_image(image):
  49     img = DiskImage()
  50     img['name'] = image['name']
  51     img['description'] = image['name']
  52     img['os'] = image['name']
  53     img['version'] = image['name']
  54     return img
  55
  56 class OSAggregate:
  57
  58     def __init__(self, driver):
  59         self.driver = driver
  60
  61     def get_rspec(self, slice_xrn=None, version=None, options={}):
  62         version_manager = VersionManager()
  63         version = version_manager.get_version(version)
  64         if not slice_xrn:
  65             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  66             nodes = self.get_aggregate_nodes()
  67         else:
  68             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  69             nodes = self.get_slice_nodes(slice_xrn)
  70         rspec = RSpec(version=rspec_version, user_options=options)
  71         rspec.version.add_nodes(nodes)
  72         return rspec.toxml()
  73
  74     def get_availability_zones(self):
  75         # essex release
  76         zones = self.driver.shell.nova_manager.dns_domains.domains()
  77
  78         if not zones:
  79             zones = ['cloud']
  80         else:
  81             zones = [zone.name for zone in zones]
  82         return zones
  83
  84     def get_slice_nodes(self, slice_xrn):
  85         # update nova connection
  86         tenant_name = OSXrn(xrn=slice_xrn, type='slice').get_tenant_name()
  87         self.driver.shell.nova_manager.connect(tenant=tenant_name)
  88
  89         zones = self.get_availability_zones()
  90         name = hrn_to_os_slicename(slice_xrn)
  91         instances = self.driver.shell.nova_manager.servers.findall(name=name)
  92         rspec_nodes = []
  93         for instance in instances:
  94             # determine node urn
  95             node_xrn = instance.metadata.get('component_id')
  96             if not node_xrn:
  97                 node_xrn = OSXrn('cloud', type='node')
  98             else:
  99                 node_xrn = OSXrn(xrn=node_xrn, type='node')
 100
 101             rspec_node = Node()
 102             rspec_node['component_id'] = node_xrn.urn
 103             rspec_node['component_name'] = node_xrn.name
 104             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 105             if instance.metadata.get('client_id'):
 106                 rspec_node['client_id'] = instance.metadata.get('client_id')
 107
 108             # get sliver details
 109             sliver_xrn = OSXrn(xrn=slice_xrn, type='slice', id=instance.id)
 110             rspec_node['sliver_id'] = sliver_xrn.get_urn()
 111             flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 112             sliver = instance_to_sliver(flavor)
 113             # get firewall rules
 114             fw_rules = []
 115             group_name = instance.metadata.get('security_groups')
 116             if group_name:
 117                 group = self.driver.shell.nova_manager.security_groups.find(name=group_name)
 118                 for rule in group.rules:
 119                     port_range ="%s:%s" % (rule['from_port'], rule['to_port'])
 120                     fw_rule = FWRule({'protocol': rule['ip_protocol'],
 121                                       'port_range': port_range,
 122                                       'cidr_ip': rule['ip_range']['cidr']})
 123                     fw_rules.append(fw_rule)
 124             sliver['fw_rules'] = fw_rules
 125             rspec_node['slivers']= [sliver]
 126             # get disk image
 127             image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 128             if isinstance(image, list) and len(image) > 0:
 129                 image = image[0]
 130             disk_image = image_to_rspec_disk_image(image)
 131             sliver['disk_image'] = [disk_image]
 132
 133             # get interfaces
 134             rspec_node['services'] = []
 135             rspec_node['interfaces'] = []
 136             addresses = instance.addresses
 137             # HACK: public ips are stored in the list of private, but
 138             # this seems wrong. Assume pub ip is the last in the list of
 139             # private ips until openstack bug is fixed.
 140             if addresses.get('private'):
 141                 login = Login({'authentication': 'ssh-keys',
 142                                'hostname': addresses.get('private')[-1]['addr'],
 143                                'port':'22', 'username': 'root'})
 144                 service = Services({'login': login})
 145                 rspec_node['services'].append(service)
 146
 147             for private_ip in addresses.get('private', []):
 148                 if_xrn = PlXrn(auth=self.driver.hrn,
 149                                interface='node%s' % (instance.hostId))
 150                 if_client_id = Xrn(if_xrn.urn, type='interface', id="eth%s" %if_index).urn
 151                 if_sliver_id = Xrn(rspec_node['sliver_id'], type='slice', id="eth%s" %if_index).urn
 152                 interface = Interface({'component_id': if_xrn.urn,
 153                                        'client_id': if_client_id,
 154                                        'sliver_id': if_sliver_id})
 155                 interface['ips'] =  [{'address': private_ip['addr'],
 156                                      #'netmask': private_ip['network'],
 157                                      'type': 'ipv%s' % str(private_ip['version'])}]
 158                 rspec_node['interfaces'].append(interface)
 159
 160             # slivers always provide the ssh service
 161             for public_ip in addresses.get('public', []):
 162                 login = Login({'authentication': 'ssh-keys',
 163                                'hostname': public_ip['addr'],
 164                                'port':'22', 'username': 'root'})
 165                 service = Services({'login': login})
 166                 rspec_node['services'].append(service)
 167
 168             rspec_nodes.append(rspec_node)
 169         return rspec_nodes
 170
 171     def get_aggregate_nodes(self):
 172         zones = self.get_availability_zones()
 173         # available sliver/instance/vm types
 174         instances = self.driver.shell.nova_manager.flavors.list()
 175         if isinstance(instances, dict):
 176             instances = instances.values()
 177         # available images
 178         images = self.driver.shell.image_manager.get_images_detailed()
 179         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 180         rspec_nodes = []
 181         for zone in zones:
 182             rspec_node = Node()
 183             xrn = OSXrn(zone, type='node')
 184             rspec_node['component_id'] = xrn.urn
 185             rspec_node['component_name'] = xrn.name
 186             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 187             rspec_node['exclusive'] = 'false'
 188             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 189                                                 HardwareType({'name': 'pc'})]
 190             slivers = []
 191             for instance in instances:
 192                 sliver = instance_to_sliver(instance)
 193                 sliver['disk_image'] = disk_images
 194                 slivers.append(sliver)
 195
 196             rspec_node['slivers'] = slivers
 197             rspec_nodes.append(rspec_node)
 198
 199         return rspec_nodes
 200
 201
 202     def create_tenant(self, tenant_name):
 203         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 204         if not tenants:
 205             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 206             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 207         else:
 208             tenant = tenants[0]
 209         return tenant
 210
 211
 212     def create_instance_key(self, slice_hrn, user):
 213         slice_name = Xrn(slice_hrn).leaf
 214         user_name = Xrn(user['urn']).leaf
 215         key_name = "%s_%s" % (slice_name, user_name)
 216         pubkey = user['keys'][0]
 217         key_found = False
 218         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 219         for existing_key in existing_keys:
 220             if existing_key.public_key != pubkey:
 221                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 222             elif existing_key.public_key == pubkey:
 223                 key_found = True
 224
 225         if not key_found:
 226             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 227         return key_name
 228
 229
 230     def create_security_group(self, slicename, fw_rules=[]):
 231         # use default group by default
 232         group_name = 'default'
 233         if isinstance(fw_rules, list) and fw_rules:
 234             # Each sliver get's its own security group.
 235             # Keep security group names unique by appending some random
 236             # characters on end.
 237             random_name = "".join([random.choice(string.letters+string.digits)
 238                                            for i in xrange(6)])
 239             group_name = slicename + random_name
 240             security_group = SecurityGroup(self.driver)
 241             security_group.create_security_group(group_name)
 242             for rule in fw_rules:
 243                 security_group.add_rule_to_group(group_name,
 244                                              protocol = rule.get('protocol'),
 245                                              cidr_ip = rule.get('cidr_ip'),
 246                                              port_range = rule.get('port_range'),
 247                                              icmp_type_code = rule.get('icmp_type_code'))
 248             # Open ICMP by default
 249             security_group.add_rule_to_group(group_name,
 250                                              protocol = "icmp",
 251                                              cidr_ip = "0.0.0.0/0",
 252                                              icmp_type_code = "-1:-1")
 253         return group_name
 254
 255     def add_rule_to_security_group(self, group_name, **kwds):
 256         security_group = SecurityGroup(self.driver)
 257         security_group.add_rule_to_group(group_name=group_name,
 258                                          protocol=kwds.get('protocol'),
 259                                          cidr_ip =kwds.get('cidr_ip'),
 260                                          icmp_type_code = kwds.get('icmp_type_code'))
 261
 262
 263
 264     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 265         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 266         #            '%s, key: %s, name: %s' % \
 267         #            (image_id, flavor_id, key_name, slicename))
 268
 269         # make sure a tenant exists for this slice
 270         tenant = self.create_tenant(tenant_name)
 271
 272         # add the sfa admin user to this tenant and update our nova client connection
 273         # to use these credentials for the rest of this session. This emsures that the instances
 274         # we create will be assigned to the correct tenant.
 275         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 276         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 277         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 278         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 279         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 280         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 281
 282         authorized_keys = "\n".join(pubkeys)
 283         files = {'/root/.ssh/authorized_keys': authorized_keys}
 284         rspec = RSpec(rspec)
 285         requested_instances = defaultdict(list)
 286         # iterate over clouds/zones/nodes
 287         for node in rspec.version.get_nodes_with_slivers():
 288             instances = node.get('slivers', [])
 289             if not instances:
 290                 continue
 291             for instance in instances:
 292                 try:
 293                     metadata = {}
 294                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 295                     image = instance.get('disk_image')
 296                     if image and isinstance(image, list):
 297                         image = image[0]
 298                     else:
 299                         raise InvalidRSpec("Must specify a disk_image for each VM")
 300                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 301                     fw_rules = instance.get('fw_rules', [])
 302                     group_name = self.create_security_group(instance_name, fw_rules)
 303                     metadata['security_groups'] = group_name
 304                     if node.get('component_id'):
 305                         metadata['component_id'] = node['component_id']
 306                     if node.get('client_id'):
 307                         metadata['client_id'] = node['client_id']
 308                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 309                                                             image=image_id,
 310                                                             key_name = key_name,
 311                                                             security_groups = [group_name],
 312                                                             files=files,
 313                                                             meta=metadata,
 314                                                             name=instance_name)
 315                 except Exception, err:
 316                     logger.log_exc(err)
 317
 318
 319
 320     def delete_instances(self, instance_name, tenant_name):
 321
 322         def _delete_security_group(instance):
 323             security_group = instance.metadata.get('security_groups', '')
 324             if security_group:
 325                 manager = SecurityGroup(self.driver)
 326                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 327                 start_time = time.time()
 328                 instance_deleted = False
 329                 while instance_deleted == False and (time.time() - start_time) < timeout:
 330                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 331                     if not inst:
 332                         instance_deleted = True
 333                     time.sleep(.5)
 334                 manager.delete_security_group(security_group)
 335
 336         thread_manager = ThreadManager()
 337         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 338         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 339         for instance in instances:
 340             # destroy instance
 341             self.driver.shell.nova_manager.servers.delete(instance)
 342             # deleate this instance's security groups
 343             thread_manager.run(_delete_security_group, instance)
 344         return True
 345
 346
 347     def stop_instances(self, instance_name, tenant_name):
 348         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 349         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 350         for instance in instances:
 351             self.driver.shell.nova_manager.servers.pause(instance)
 352         return 1
 353
 354     def update_instances(self, project_name):
 355         pass