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