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 instance_to_rspec_node(self, slice_xrn, instance):
  85         # determine node urn
  86         node_xrn = instance.metadata.get('component_id')
  87         if not node_xrn:
  88             node_xrn = OSXrn('cloud', type='node')
  89         else:
  90             node_xrn = OSXrn(xrn=node_xrn, type='node')
  91
  92         rspec_node = Node()
  93         rspec_node['component_id'] = node_xrn.urn
  94         rspec_node['component_name'] = node_xrn.name
  95         rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  96         if instance.metadata.get('client_id'):
  97             rspec_node['client_id'] = instance.metadata.get('client_id')
  98
  99         # get sliver details
 100         sliver_xrn = OSXrn(xrn=slice_xrn, type='slice', id=instance.id)
 101         rspec_node['sliver_id'] = sliver_xrn.get_urn()
 102         flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 103         sliver = instance_to_sliver(flavor)
 104         # get firewall rules
 105         fw_rules = []
 106         group_name = instance.metadata.get('security_groups')
 107         if group_name:
 108             group = self.driver.shell.nova_manager.security_groups.find(name=group_name)
 109             for rule in group.rules:
 110                 port_range ="%s:%s" % (rule['from_port'], rule['to_port'])
 111                 fw_rule = FWRule({'protocol': rule['ip_protocol'],
 112                                   'port_range': port_range,
 113                                   'cidr_ip': rule['ip_range']['cidr']})
 114                 fw_rules.append(fw_rule)
 115         sliver['fw_rules'] = fw_rules
 116         rspec_node['slivers']= [sliver]
 117         # get disk image
 118         image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 119         if isinstance(image, list) and len(image) > 0:
 120             image = image[0]
 121         disk_image = image_to_rspec_disk_image(image)
 122         sliver['disk_image'] = [disk_image]
 123
 124         # get interfaces
 125         rspec_node['services'] = []
 126         rspec_node['interfaces'] = []
 127         addresses = instance.addresses
 128         # HACK: public ips are stored in the list of private, but
 129         # this seems wrong. Assume pub ip is the last in the list of
 130         # private ips until openstack bug is fixed.
 131         if addresses.get('private'):
 132             login = Login({'authentication': 'ssh-keys',
 133                            'hostname': addresses.get('private')[-1]['addr'],
 134                            'port':'22', 'username': 'root'})
 135             service = Services({'login': login})
 136             rspec_node['services'].append(service)
 137
 138         for private_ip in addresses.get('private', []):
 139             if_xrn = PlXrn(auth=self.driver.hrn,
 140                            interface='node%s' % (instance.hostId))
 141             if_client_id = Xrn(if_xrn.urn, type='interface', id="eth%s" %if_index).urn
 142             if_sliver_id = Xrn(rspec_node['sliver_id'], type='slice', id="eth%s" %if_index).urn
 143             interface = Interface({'component_id': if_xrn.urn,
 144                                    'client_id': if_client_id,
 145                                    'sliver_id': if_sliver_id})
 146             interface['ips'] =  [{'address': private_ip['addr'],
 147                                  #'netmask': private_ip['network'],
 148                                  'type': 'ipv%s' % str(private_ip['version'])}]
 149             rspec_node['interfaces'].append(interface)
 150
 151         # slivers always provide the ssh service
 152         for public_ip in addresses.get('public', []):
 153             login = Login({'authentication': 'ssh-keys',
 154                            'hostname': public_ip['addr'],
 155                            'port':'22', 'username': 'root'})
 156             service = Services({'login': login})
 157             rspec_node['services'].append(service)
 158         return rspec_node
 159
 160     def get_slice_nodes(self, slice_xrn):
 161         # update nova connection
 162         tenant_name = OSXrn(xrn=slice_xrn, type='slice').get_tenant_name()
 163         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 164
 165         zones = self.get_availability_zones()
 166         name = hrn_to_os_slicename(slice_xrn)
 167         instances = self.driver.shell.nova_manager.servers.findall(name=name)
 168         rspec_nodes = []
 169         for instance in instances:
 170             rspec_nodes.append(self.instance_to_rspec_node(slice_xrn, instance))
 171         return rspec_nodes
 172
 173     def get_aggregate_nodes(self):
 174         zones = self.get_availability_zones()
 175         # available sliver/instance/vm types
 176         instances = self.driver.shell.nova_manager.flavors.list()
 177         if isinstance(instances, dict):
 178             instances = instances.values()
 179         # available images
 180         images = self.driver.shell.image_manager.get_images_detailed()
 181         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 182         rspec_nodes = []
 183         for zone in zones:
 184             rspec_node = Node()
 185             xrn = OSXrn(zone, type='node')
 186             rspec_node['component_id'] = xrn.urn
 187             rspec_node['component_name'] = xrn.name
 188             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 189             rspec_node['exclusive'] = 'false'
 190             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 191                                                 HardwareType({'name': 'pc'})]
 192             slivers = []
 193             for instance in instances:
 194                 sliver = instance_to_sliver(instance)
 195                 sliver['disk_image'] = disk_images
 196                 slivers.append(sliver)
 197
 198             rspec_node['slivers'] = slivers
 199             rspec_nodes.append(rspec_node)
 200
 201         return rspec_nodes
 202
 203
 204     def create_tenant(self, tenant_name):
 205         tenants = self.driver.shell.auth_manager.tenants.findall(name=tenant_name)
 206         if not tenants:
 207             self.driver.shell.auth_manager.tenants.create(tenant_name, tenant_name)
 208             tenant = self.driver.shell.auth_manager.tenants.find(name=tenant_name)
 209         else:
 210             tenant = tenants[0]
 211         return tenant
 212
 213
 214     def create_instance_key(self, slice_hrn, user):
 215         slice_name = Xrn(slice_hrn).leaf
 216         user_name = Xrn(user['urn']).leaf
 217         key_name = "%s_%s" % (slice_name, user_name)
 218         pubkey = user['keys'][0]
 219         key_found = False
 220         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 221         for existing_key in existing_keys:
 222             if existing_key.public_key != pubkey:
 223                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 224             elif existing_key.public_key == pubkey:
 225                 key_found = True
 226
 227         if not key_found:
 228             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 229         return key_name
 230
 231
 232     def create_security_group(self, slicename, fw_rules=[]):
 233         # use default group by default
 234         group_name = 'default'
 235         if isinstance(fw_rules, list) and fw_rules:
 236             # Each sliver get's its own security group.
 237             # Keep security group names unique by appending some random
 238             # characters on end.
 239             random_name = "".join([random.choice(string.letters+string.digits)
 240                                            for i in xrange(6)])
 241             group_name = slicename + random_name
 242             security_group = SecurityGroup(self.driver)
 243             security_group.create_security_group(group_name)
 244             for rule in fw_rules:
 245                 security_group.add_rule_to_group(group_name,
 246                                              protocol = rule.get('protocol'),
 247                                              cidr_ip = rule.get('cidr_ip'),
 248                                              port_range = rule.get('port_range'),
 249                                              icmp_type_code = rule.get('icmp_type_code'))
 250             # Open ICMP by default
 251             security_group.add_rule_to_group(group_name,
 252                                              protocol = "icmp",
 253                                              cidr_ip = "0.0.0.0/0",
 254                                              icmp_type_code = "-1:-1")
 255         return group_name
 256
 257     def add_rule_to_security_group(self, group_name, **kwds):
 258         security_group = SecurityGroup(self.driver)
 259         security_group.add_rule_to_group(group_name=group_name,
 260                                          protocol=kwds.get('protocol'),
 261                                          cidr_ip =kwds.get('cidr_ip'),
 262                                          icmp_type_code = kwds.get('icmp_type_code'))
 263
 264
 265
 266     def run_instances(self, instance_name, tenant_name, rspec, key_name, pubkeys):
 267         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 268         #            '%s, key: %s, name: %s' % \
 269         #            (image_id, flavor_id, key_name, slicename))
 270
 271         # make sure a tenant exists for this slice
 272         tenant = self.create_tenant(tenant_name)
 273
 274         # add the sfa admin user to this tenant and update our nova client connection
 275         # to use these credentials for the rest of this session. This emsures that the instances
 276         # we create will be assigned to the correct tenant.
 277         sfa_admin_user = self.driver.shell.auth_manager.users.find(name=self.driver.shell.auth_manager.opts['OS_USERNAME'])
 278         user_role = self.driver.shell.auth_manager.roles.find(name='user')
 279         admin_role = self.driver.shell.auth_manager.roles.find(name='admin')
 280         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, admin_role, tenant)
 281         self.driver.shell.auth_manager.roles.add_user_role(sfa_admin_user, user_role, tenant)
 282         self.driver.shell.nova_manager.connect(tenant=tenant.name)
 283
 284         authorized_keys = "\n".join(pubkeys)
 285         files = {'/root/.ssh/authorized_keys': authorized_keys}
 286         rspec = RSpec(rspec)
 287         requested_instances = defaultdict(list)
 288
 289         # iterate over clouds/zones/nodes
 290         created_instances = []
 291         for node in rspec.version.get_nodes_with_slivers():
 292             instances = node.get('slivers', [])
 293             if not instances:
 294                 continue
 295             for instance in instances:
 296                 try:
 297                     metadata = {}
 298                     flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 299                     image = instance.get('disk_image')
 300                     if image and isinstance(image, list):
 301                         image = image[0]
 302                     else:
 303                         raise InvalidRSpec("Must specify a disk_image for each VM")
 304                     image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 305                     fw_rules = instance.get('fw_rules', [])
 306                     group_name = self.create_security_group(instance_name, fw_rules)
 307                     metadata['security_groups'] = group_name
 308                     if node.get('component_id'):
 309                         metadata['component_id'] = node['component_id']
 310                     server = self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 311                                                             image=image_id,
 312                                                             key_name = key_name,
 313                                                             security_groups = [group_name],
 314                                                             files=files,
 315                                                             meta=metadata,
 316                                                             name=instance_name)
 317                     if node.get('client_id'):
 318                         server.metadata['client_id'] = node['client_id']
 319                     created_instances.append(server)
 320
 321                 except Exception, err:
 322                     logger.log_exc(err)
 323
 324         return created_instances
 325
 326
 327     def delete_instances(self, instance_name, tenant_name):
 328
 329         def _delete_security_group(instance):
 330             security_group = instance.metadata.get('security_groups', '')
 331             if security_group:
 332                 manager = SecurityGroup(self.driver)
 333                 timeout = 10.0 # wait a maximum of 10 seconds before forcing the security group delete
 334                 start_time = time.time()
 335                 instance_deleted = False
 336                 while instance_deleted == False and (time.time() - start_time) < timeout:
 337                     inst = self.driver.shell.nova_manager.servers.findall(id=instance.id)
 338                     if not inst:
 339                         instance_deleted = True
 340                     time.sleep(1)
 341                 manager.delete_security_group(security_group)
 342
 343         thread_manager = ThreadManager()
 344         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 345         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 346         for instance in instances:
 347             # destroy instance
 348             self.driver.shell.nova_manager.servers.delete(instance)
 349             # deleate this instance's security groups
 350             thread_manager.run(_delete_security_group, instance)
 351         return True
 352
 353
 354     def stop_instances(self, instance_name, tenant_name):
 355         self.driver.shell.nova_manager.connect(tenant=tenant_name)
 356         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 357         for instance in instances:
 358             self.driver.shell.nova_manager.servers.pause(instance)
 359         return 1
 360
 361     def update_instances(self, project_name):
 362         pass