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