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_availability_zones(self):
  64         zones = self.driver.shell.nova_manager.dns_domains.domains()
  65         if not zones:
  66             zones = ['cloud']
  67         else:
  68             zones = [zone.name for zone in zones]
  69         return zones
  70
  71
  72     def describe(self, urns, version=None, options={}):
  73
  74         return {}
  75
  76     def get_rspec(self, slice_xrn=None, version=None, options={}):
  77         version_manager = VersionManager()
  78         version = version_manager.get_version(version)
  79         if not slice_xrn:
  80             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  81             rspec = self.get_aggregate_rspec(rspec_version, options)
  82         else:
  83             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  84             rspec = self.get_slice_rsepc(slice_xrn, rspec_version, options)
  85
  86         return rspec
  87
  88     def get_aggregate_rspec(self, version, options={}):
  89         rspec = RSpec(version=version, user_options=options)
  90         nodes = self.get_aggregate_nodes()
  91         rspec.version.add_nodes(nodes)
  92         return rspec.toxml()
  93
  94     def get_slice_rspec(self, xrn, version, options={}):
  95         rspec = RSpec(version=version, user_options=options)
  96         nodes = self.get_slice_nodes(slice_xrn)
  97         rspec.version.add_nodes(nodes)
  98         return rspec.toxml()
  99
 100     def get_slice_nodes(self, slice_xrn):
 101         zones = self.get_availability_zones()
 102         name = hrn_to_os_slicename(slice_xrn)
 103         instances = self.driver.shell.nova_manager.servers.findall(name=name)
 104         rspec_nodes = []
 105         for instance in instances:
 106             rspec_node = Node()
 107             #TODO: find a way to look up an instances availability zone in essex
 108             #if instance.availability_zone:
 109             #    node_xrn = OSXrn(instance.availability_zone, 'node')
 110             #else:
 111             #    node_xrn = OSXrn('cloud', 'node')
 112             node_xrn = instance.metadata.get('component_id')
 113             node_xrn
 114             if not node_xrn:
 115                 node_xrn = OSXrn('cloud', 'node')
 116             else:
 117                 node_xrn = OSXrn(xrn=node_xrn, 'node')
 118
 119             rspec_node['component_id'] = node_xrn.urn
 120             rspec_node['component_name'] = node_xrn.name
 121             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 122             flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 123             sliver = instance_to_sliver(flavor)
 124             rspec_node['slivers'] = [sliver]
 125             image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 126             if isinstance(image, list) and len(image) > 0:
 127                 image = image[0]
 128             disk_image = image_to_rspec_disk_image(image)
 129             sliver['disk_image'] = [disk_image]
 130
 131             # build interfaces
 132             interfaces = []
 133             addresses = instance.addresses
 134             for private_ip in addresses.get('private', []):
 135                 if_xrn = PlXrn(auth=self.driver.hrn,
 136                                interface='node%s:eth0' % (instance.hostId))
 137                 interface = Interface({'component_id': if_xrn.urn})
 138                 interface['ips'] =  [{'address': private_ip['addr'],
 139                                      #'netmask': private_ip['network'],
 140                                      'type': private_ip['version']}]
 141                 interfaces.append(interface)
 142             rspec_node['interfaces'] = interfaces
 143
 144             # slivers always provide the ssh service
 145             rspec_node['services'] = []
 146             for public_ip in addresses.get('public', []):
 147                 login = Login({'authentication': 'ssh-keys',
 148                                'hostname': public_ip['addr'],
 149                                'port':'22', 'username': 'root'})
 150                 service = Services({'login': login})
 151                 rspec_node['services'].append(service)
 152             rspec_nodes.append(rspec_node)
 153         return rspec_nodes
 154
 155     def get_aggregate_nodes(self):
 156         zones = self.get_availability_zones()
 157         # available sliver/instance/vm types
 158         instances = self.driver.shell.nova_manager.flavors.list()
 159         if isinstance(instances, dict):
 160             instances = instances.values()
 161         # available images
 162         images = self.driver.shell.image_manager.get_images_detailed()
 163         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 164         rspec_nodes = []
 165         for zone in zones:
 166             rspec_node = Node()
 167             xrn = OSXrn(zone, type='node')
 168             rspec_node['component_id'] = xrn.urn
 169             rspec_node['component_name'] = xrn.name
 170             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 171             rspec_node['exclusive'] = 'false'
 172             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 173                                                 HardwareType({'name': 'pc'})]
 174             slivers = []
 175             for instance in instances:
 176                 sliver = instance_to_sliver(instance)
 177                 sliver['disk_image'] = disk_images
 178                 slivers.append(sliver)
 179
 180             rspec_node['slivers'] = slivers
 181             rspec_nodes.append(rspec_node)
 182
 183         return rspec_nodes
 184
 185
 186     def create_instance_key(self, slice_hrn, user):
 187         slice_name = Xrn(slice_hrn).leaf
 188         user_name = Xrn(user['urn']).leaf
 189         key_name = "%s:%s" % (slice_name, user_name)
 190         pubkey = user['keys'][0]
 191         key_found = False
 192         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 193         for existing_key in existing_keys:
 194             if existing_key.public_key != pubkey:
 195                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 196             elif existing_key.public_key == pubkey:
 197                 key_found = True
 198
 199         if not key_found:
 200             self.driver.shell.nova_manager.keypairs.create(key_name, pubkey)
 201         return key_name
 202
 203
 204     def create_security_group(self, slicename, fw_rules=[]):
 205         # use default group by default
 206         group_name = 'default'
 207         if isinstance(fw_rules, list) and fw_rules:
 208             # Each sliver get's its own security group.
 209             # Keep security group names unique by appending some random
 210             # characters on end.
 211             random_name = "".join([random.choice(string.letters+string.digits)
 212                                            for i in xrange(6)])
 213             group_name = slicename + random_name
 214             security_group = SecurityGroup(self.driver)
 215             security_group.create_security_group(group_name)
 216             for rule in fw_rules:
 217                 security_group.add_rule_to_group(group_name,
 218                                              protocol = rule.get('protocol'),
 219                                              cidr_ip = rule.get('cidr_ip'),
 220                                              port_range = rule.get('port_range'),
 221                                              icmp_type_code = rule.get('icmp_type_code'))
 222         return group_name
 223
 224     def add_rule_to_security_group(self, group_name, **kwds):
 225         security_group = SecurityGroup(self.driver)
 226         security_group.add_rule_to_group(group_name=group_name,
 227                                          protocol=kwds.get('protocol'),
 228                                          cidr_ip =kwds.get('cidr_ip'),
 229                                          icmp_type_code = kwds.get('icmp_type_code'))
 230
 231
 232
 233     def run_instances(self, slicename, rspec, key_name, pubkeys):
 234         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 235         #            '%s, key: %s, name: %s' % \
 236         #            (image_id, flavor_id, key_name, slicename))
 237
 238         authorized_keys = "\n".join(pubkeys)
 239         files = {'/root/.ssh/authorized_keys': authorized_keys}
 240         rspec = RSpec(rspec)
 241         requested_instances = defaultdict(list)
 242         # iterate over clouds/zones/nodes
 243         for node in rspec.version.get_nodes_with_slivers():
 244             instances = node.get('slivers', [])
 245             if not instances:
 246                 continue
 247             for instance in instances:
 248                 metadata = {}
 249                 flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 250                 image = instance.get('disk_image')
 251                 if image and isinstance(image, list):
 252                     image = image[0]
 253                 image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 254                 fw_rules = instance.get('fw_rules', [])
 255                 group_name = self.create_security_group(slicename, fw_rules)
 256                 metadata['security_groups'] = group_name
 257                 metadata['component_id'] = node['component_id']
 258                 try:
 259                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 260                                                             image=image_id,
 261                                                             key_name = key_name,
 262                                                             security_group = group_name,
 263                                                             files=files,
 264                                                             meta=metadata,
 265                                                             name=slicename)
 266                 except Exception, err:
 267                     logger.log_exc(err)
 268
 269
 270
 271     def delete_instances(self, instance_name):
 272         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 273         security_group_manager = SecurityGroup(self.driver)
 274         for instance in instances:
 275             # deleate this instance's security groups
 276             security_group = instance.metadata.get('security_groups', '')
 277             if security_group:
 278                 # dont delete the default security group
 279                 if security_group != 'default':
 280                     security_group_manager.delete_security_group(security_group)
 281             # destroy instance
 282             self.driver.shell.nova_manager.servers.delete(instance)
 283         return 1
 284
 285     def stop_instances(self, instance_name):
 286         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 287         for instance in instances:
 288             self.driver.shell.nova_manager.servers.pause(instance)
 289         return 1
 290
 291     def update_instances(self, project_name):
 292         pass