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