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         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             rspec_node = Node()
  93
  94             #TODO: find a way to look up an instances availability zone in essex
  95             #if instance.availability_zone:
  96             #    node_xrn = OSXrn(instance.availability_zone, 'node')
  97             #else:
  98             #    node_xrn = OSXrn('cloud', 'node')
  99             node_xrn = instance.metadata.get('component_id')
 100             if not node_xrn:
 101                 node_xrn = OSXrn('cloud', 'node')
 102             else:
 103                 node_xrn = OSXrn(node_xrn, 'node')
 104
 105             rspec_node['component_id'] = node_xrn.urn
 106             rspec_node['component_name'] = node_xrn.name
 107             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 108             flavor = self.driver.shell.nova_manager.flavors.find(id=instance.flavor['id'])
 109             sliver = instance_to_sliver(flavor)
 110             rspec_node['slivers'] = [sliver]
 111             image = self.driver.shell.image_manager.get_images(id=instance.image['id'])
 112             if isinstance(image, list) and len(image) > 0:
 113                 image = image[0]
 114             disk_image = image_to_rspec_disk_image(image)
 115             sliver['disk_image'] = [disk_image]
 116
 117             # build interfaces
 118             interfaces = []
 119             addresses = instance.addresses
 120             for private_ip in addresses.get('private', []):
 121                 if_xrn = PlXrn(auth=self.driver.hrn,
 122                                interface='node%s:eth0' % (instance.hostId))
 123                 interface = Interface({'component_id': if_xrn.urn})
 124                 interface['ips'] =  [{'address': private_ip['addr'],
 125                                      #'netmask': private_ip['network'],
 126                                      'type': private_ip['version']}]
 127                 interfaces.append(interface)
 128             rspec_node['interfaces'] = interfaces
 129
 130             # slivers always provide the ssh service
 131             rspec_node['services'] = []
 132             for public_ip in addresses.get('public', []):
 133                 login = Login({'authentication': 'ssh-keys',
 134                                'hostname': public_ip['addr'],
 135                                'port':'22', 'username': 'root'})
 136                 service = Services({'login': login})
 137                 rspec_node['services'].append(service)
 138             rspec_nodes.append(rspec_node)
 139         return rspec_nodes
 140
 141     def get_aggregate_nodes(self):
 142         zones = self.get_availability_zones()
 143         # available sliver/instance/vm types
 144         instances = self.driver.shell.nova_manager.flavors.list()
 145         if isinstance(instances, dict):
 146             instances = instances.values()
 147         # available images
 148         images = self.driver.shell.image_manager.get_images_detailed()
 149         disk_images  = [image_to_rspec_disk_image(img) for img in images if img['container_format'] in ['ami', 'ovf']]
 150         rspec_nodes = []
 151         for zone in zones:
 152             rspec_node = Node()
 153             xrn = OSXrn(zone, type='node')
 154             rspec_node['component_id'] = xrn.urn
 155             rspec_node['component_name'] = xrn.name
 156             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 157             rspec_node['exclusive'] = 'false'
 158             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 159                                                 HardwareType({'name': 'pc'})]
 160             slivers = []
 161             for instance in instances:
 162                 sliver = instance_to_sliver(instance)
 163                 sliver['disk_image'] = disk_images
 164                 slivers.append(sliver)
 165
 166             rspec_node['slivers'] = slivers
 167             rspec_nodes.append(rspec_node)
 168
 169         return rspec_nodes
 170
 171
 172     def create_instance_key(self, slice_hrn, user):
 173         key_name = "%s:%s" (slice_name, Xrn(user['urn']).get_hrn())
 174         pubkey = user['keys'][0]
 175         key_found = False
 176         existing_keys = self.driver.shell.nova_manager.keypairs.findall(name=key_name)
 177         for existing_key in existing_keys:
 178             if existing_key.public_key != pubkey:
 179                 self.driver.shell.nova_manager.keypairs.delete(existing_key)
 180             elif existing_key.public_key == pubkey:
 181                 key_found = True
 182
 183         if not key_found:
 184             self.driver.shll.nova_manager.keypairs.create(key_name, pubkey)
 185         return key_name
 186
 187
 188     def create_security_group(self, slicename, fw_rules=[]):
 189         # use default group by default
 190         group_name = 'default'
 191         if isinstance(fw_rules, list) and fw_rules:
 192             # Each sliver get's its own security group.
 193             # Keep security group names unique by appending some random
 194             # characters on end.
 195             random_name = "".join([random.choice(string.letters+string.digits)
 196                                            for i in xrange(6)])
 197             group_name = slicename + random_name
 198             security_group = SecurityGroup(self.driver)
 199             security_group.create_security_group(group_name)
 200             for rule in fw_rules:
 201                 security_group.add_rule_to_group(group_name,
 202                                              protocol = rule.get('protocol'),
 203                                              cidr_ip = rule.get('cidr_ip'),
 204                                              port_range = rule.get('port_range'),
 205                                              icmp_type_code = rule.get('icmp_type_code'))
 206         return group_name
 207
 208     def add_rule_to_security_group(self, group_name, **kwds):
 209         security_group = SecurityGroup(self.driver)
 210         security_group.add_rule_to_group(group_name=group_name,
 211                                          protocol=kwds.get('protocol'),
 212                                          cidr_ip =kwds.get('cidr_ip'),
 213                                          icmp_type_code = kwds.get('icmp_type_code'))
 214
 215
 216
 217     def run_instances(self, slicename, rspec, key_name, pubkeys):
 218         #logger.debug('Reserving an instance: image: %s, flavor: ' \
 219         #            '%s, key: %s, name: %s' % \
 220         #            (image_id, flavor_id, key_name, slicename))
 221
 222         authorized_keys = "\n".join(pubkeys)
 223         files = {'/root/.ssh/authorized_keys': authorized_keys}
 224         rspec = RSpec(rspec)
 225         requested_instances = defaultdict(list)
 226         # iterate over clouds/zones/nodes
 227         for node in rspec.version.get_nodes_with_slivers():
 228             instances = node.get('slivers', [])
 229             if not instances:
 230                 continue
 231             for instance in instances:
 232                 metadata = {}
 233                 flavor_id = self.driver.shell.nova_manager.flavors.find(name=instance['name'])
 234                 image = instance.get('disk_image')
 235                 if image and isinstance(image, list):
 236                     image = image[0]
 237                 image_id = self.driver.shell.nova_manager.images.find(name=image['name'])
 238                 fw_rules = instance.get('fw_rules', [])
 239                 group_name = self.create_security_group(slicename, fw_rules)
 240                 metadata['security_groups'] = group_name
 241                 metadata['component_id'] = node['component_id']
 242                 try:
 243                     self.driver.shell.nova_manager.servers.create(flavor=flavor_id,
 244                                                             image=image_id,
 245                                                             key_name = key_name,
 246                                                             security_group = group_name,
 247                                                             files=files,
 248                                                             meta=metadata,
 249                                                             name=slicename)
 250                 except Exception, err:
 251                     logger.log_exc(err)
 252
 253
 254
 255     def delete_instances(self, instance_name):
 256         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 257         security_group_manager = SecurityGroup(self.driver)
 258         for instance in instances:
 259             # deleate this instance's security groups
 260             for security_group in instance.metadata.get('security_groups', []):
 261                 # dont delete the default security group
 262                 if security_group != 'default':
 263                     security_group_manager.delete_security_group(security_group)
 264             # destroy instance
 265             self.driver.shell.nova_manager.servers.delete(instance)
 266         return 1
 267
 268     def stop_instances(self, instance_name):
 269         instances = self.driver.shell.nova_manager.servers.findall(name=instance_name)
 270         for instance in instances:
 271             self.driver.shell.nova_manager.servers.pause(instance)
 272         return 1
 273
 274     def update_instances(self, project_name):
 275         pass