sfa/openstack/osaggregate.py

   1 import os
   2 import base64
   3 import string
   4 import random
   5 from collections import defaultdict
   6 from nova.exception import ImageNotFound
   7 from nova.api.ec2.cloud import CloudController
   8 from sfa.util.faults import SfaAPIError
   9 from sfa.rspecs.rspec import RSpec
  10 from sfa.rspecs.elements.hardware_type import HardwareType
  11 from sfa.rspecs.elements.node import Node
  12 from sfa.rspecs.elements.sliver import Sliver
  13 from sfa.rspecs.elements.login import Login
  14 from sfa.rspecs.elements.disk_image import DiskImage
  15 from sfa.rspecs.elements.services import Services
  16 from sfa.util.xrn import Xrn
  17 from sfa.util.osxrn import OSXrn
  18 from sfa.rspecs.version_manager import VersionManager
  19 from sfa.openstack.image import ImageManager
  20 from sfa.openstack.security_group import SecurityGroup
  21 from sfa.util.sfalogging import logger
  22
  23 def instance_to_sliver(instance, slice_xrn=None):
  24     # should include?
  25     # * instance.image_ref
  26     # * instance.kernel_id
  27     # * instance.ramdisk_id
  28     import nova.db.sqlalchemy.models
  29     name=None
  30     type=None
  31     sliver_id = None
  32     if isinstance(instance, dict):
  33         # this is an isntance type dict
  34         name = instance['name']
  35         type = instance['name']
  36     elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
  37         # this is an object that describes a running instance
  38         name = instance.display_name
  39         type = instance.instance_type.name
  40     else:
  41         raise SfaAPIError("instnace must be an instance_type dict or" + \
  42                            " a nova.db.sqlalchemy.models.Instance object")
  43     if slice_xrn:
  44         xrn = Xrn(slice_xrn, 'slice')
  45         sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
  46
  47     sliver = Sliver({'slice_id': sliver_id,
  48                      'name': name,
  49                      'type':  type,
  50                      'tags': []})
  51     return sliver
  52
  53
  54 def ec2_id(id=None, type=None):
  55     ec2_id = None
  56     if id and type:
  57         ec2_id = CloudController.image_ec2_id(id, type)
  58     return ec2_id
  59
  60
  61 class OSAggregate:
  62
  63     def __init__(self, driver):
  64         self.driver = driver
  65
  66     def get_rspec(self, slice_xrn=None, version=None, options={}):
  67         version_manager = VersionManager()
  68         version = version_manager.get_version(version)
  69         if not slice_xrn:
  70             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  71             nodes = self.get_aggregate_nodes()
  72         else:
  73             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  74             nodes = self.get_slice_nodes(slice_xrn)
  75         rspec = RSpec(version=rspec_version, user_options=options)
  76         rspec.version.add_nodes(nodes)
  77         return rspec.toxml()
  78
  79     def get_slice_nodes(self, slice_xrn):
  80         image_manager = ImageManager(self.driver)
  81         name = OSXrn(xrn = slice_xrn).name
  82         instances = self.driver.shell.db.instance_get_all_by_project(name)
  83         rspec_nodes = []
  84         for instance in instances:
  85             rspec_node = Node()
  86             xrn = OSXrn(instance.hostname, 'node')
  87             rspec_node['component_id'] = xrn.urn
  88             rspec_node['component_name'] = xrn.name
  89             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  90             sliver = instance_to_sliver(instance)
  91             disk_image = image_manager.get_disk_image(instance.image_ref)
  92             sliver['disk_images'] = [disk_image.to_rspec_object()]
  93             rspec_node['slivers'] = [sliver]
  94             rspec_nodes.append(rspec_node)
  95         return rspec_nodes
  96
  97     def get_aggregate_nodes(self):
  98
  99         zones = self.driver.shell.db.zone_get_all()
 100         if not zones:
 101             zones = ['cloud']
 102         else:
 103             zones = [zone.name for zone in zones]
 104
 105         # available sliver/instance/vm types
 106         instances = self.driver.shell.db.instance_type_get_all().values()
 107         # available images
 108         image_manager = ImageManager(self.driver)
 109         disk_images = image_manager.get_available_disk_images()
 110         disk_image_objects = [image.to_rspec_object() \
 111                                for image in disk_images]
 112         rspec_nodes = []
 113         for zone in zones:
 114             rspec_node = Node()
 115             xrn = OSXrn(zone, 'node')
 116             rspec_node['component_id'] = xrn.urn
 117             rspec_node['component_name'] = xrn.name
 118             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 119             rspec_node['exclusive'] = 'false'
 120             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 121                                                 HardwareType({'name': 'pc'})]
 122             slivers = []
 123             for instance in instances:
 124                 sliver = instance_to_sliver(instance)
 125                 sliver['disk_images'] = disk_image_objects
 126                 slivers.append(sliver)
 127
 128             rspec_node['slivers'] = slivers
 129             rspec_nodes.append(rspec_node)
 130
 131         return rspec_nodes
 132
 133
 134     def create_project(self, slicename, users, options={}):
 135         """
 136         Create the slice if it doesn't alredy exist. Create user
 137         accounts that don't already exist
 138         """
 139         from nova.exception import ProjectNotFound
 140         try:
 141             slice = self.driver.shell.auth_manager.get_project(slicename)
 142         except ProjectNotFound:
 143             # assume that the first user is the project manager
 144             proj_manager = Xrn(users[0]['urn']).get_leaf()
 145             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 146
 147         for user in users:
 148             username = Xrn(user['urn']).get_leaf()
 149             try:
 150                 self.driver.shell.auth_manager.get_user(username)
 151             except nova.exception.UserNotFound:
 152                 self.driver.shell.auth_manager.create_user(username)
 153             self.verify_user_keys(username, user['keys'], options)
 154
 155     def verify_user_keys(self, username, keys, options={}):
 156         """
 157         Add requested keys.
 158         """
 159         append = options.get('append', True)
 160         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 161         existing_pub_keys = [key.public_key for key in existing_keys]
 162         removed_pub_keys = set(existing_pub_keys).difference(keys)
 163         added_pub_keys = set(keys).difference(existing_pub_keys)
 164         pubkeys = []
 165         # add new keys
 166         for public_key in added_pub_keys:
 167             key = {}
 168             key['user_id'] = username
 169             key['name'] =  username
 170             key['public'] = public_key
 171             self.driver.shell.db.key_pair_create(key)
 172
 173         # remove old keys
 174         if not append:
 175             for key in existing_keys:
 176                 if key.public_key in removed_pub_keys:
 177                     self.driver.shell.db.key_pair_destroy(username, key.name)
 178
 179
 180     def create_security_group(self, group_name, fw_rules=[]):
 181         security_group = SecurityGroup(self.driver)
 182         security_group.create_security_group(group_name)
 183         for rule in fw_rules:
 184             security_group.add_rule_to_group(group_name,
 185                                              protocol = rule.get('protocol'),
 186                                              cidr_ip = rule.get('cidr_ip'),
 187                                              port_range = rule.get('port_range'),
 188                                              icmp_type_code = rule.get('icmp_type_code'))
 189
 190     def add_rule_to_security_group(self, group_name, **kwds):
 191         security_group = SecurityGroup(self.driver)
 192         security_group.add_rule_to_group(group_name=group_name,
 193                                          protocol=kwds.get('protocol'),
 194                                          cidr_ip =kwds.get('cidr_ip'),
 195                                          icmp_type_code = kwds.get('icmp_type_code'))
 196
 197
 198     def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
 199                          instance_type, key_name, user_data, group_name):
 200         conn  = self.driver.euca_shell.get_euca_connection()
 201         logger.info('Reserving an instance: image: %s, kernel: ' \
 202                     '%s, ramdisk: %s, type: %s, key: %s' % \
 203                     (image_id, kernel_id, ramdisk_id,
 204                     instance_type, key_name))
 205         try:
 206             reservation = conn.run_instances(image_id=image_id,
 207                                              kernel_id=kernel_id,
 208                                              ramdisk_id=ramdisk_id,
 209                                              instance_type=instance_type,
 210                                              key_name=key_name,
 211                                              user_data = user_data,
 212                                              security_groups=[group_name])
 213                                              #placement=zone,
 214                                              #min_count=min_count,
 215                                              #max_count=max_count,
 216
 217         except Exception, err:
 218             logger.log_exc(err)
 219
 220
 221     def run_instances(self, slicename, rspec, keyname, pubkeys):
 222         """
 223         Create the security groups and instances.
 224         """
 225         # the default image to use for instnaces that dont
 226         # explicitly request an image.
 227         # Just choose the first available image for now.
 228         image_manager = ImageManager(self.driver)
 229         available_images = image_manager.get_available_disk_images()
 230         default_image_id = None
 231         default_aki_id  = None
 232         default_ari_id = None
 233         default_image = available_images[0]
 234         default_image_id = ec2_id(default_image.id, default_image.container_format)
 235         default_aki_id = ec2_id(default_image.kernel_id, 'aki')
 236         default_ari_id = ec2_id(default_image.ramdisk_id, 'ari')
 237
 238         # get requested slivers
 239         rspec = RSpec(rspec)
 240         user_data = "\n".join(pubkeys)
 241         requested_instances = defaultdict(list)
 242         # iterate over clouds/zones/nodes
 243         for node in rspec.version.get_nodes_with_slivers():
 244             instance_types = node.get('slivers', [])
 245             if isinstance(instance_types, list):
 246                 # iterate over sliver/instance types
 247                 for instance_type in instance_types:
 248                     fw_rules = instance_type.get('fw_rules', [])
 249                     # Each sliver get's its own security group.
 250                     # Keep security group names unique by appending some random
 251                     # characters on end.
 252                     random_name = "".join([random.choice(string.letters+string.digits)
 253                                            for i in xrange(6)])
 254                     group_name = slicename + random_name
 255                     self.create_security_group(group_name, fw_rules)
 256                     ami_id = default_ami_id
 257                     aki_id = default_aki_id
 258                     ari_id = default_ari_id
 259                     req_image = instance_type.get('disk_images')
 260                     if req_image and isinstance(req_image, list):
 261                         req_image_name = req_image[0]['name']
 262                         disk_image = image_manager.get_disk_image(name=req_image_name)
 263                         if disk_image:
 264                             ami_id = ec2_id(disk_image.id, disk_image.container_format)
 265                             aki_id = ec2_id(disk_image.kernel_id, 'aki')
 266                             ari_id = ec2_id(disk_image.ramdisk_id, 'ari')
 267                     # start the instance
 268                     self.reserve_instance(image_id=ami_id,
 269                                           kernel_id=aki_id,
 270                                           ramdisk_id=ari_id,
 271                                           instance_type=instance_type['name'],
 272                                           key_name=keyname,
 273                                           user_data=user_data,
 274                                           group_name=group_name)
 275
 276
 277     def delete_instances(self, project_name):
 278         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 279         security_group_manager = SecurityGroup(self.driver)
 280         for instance in instances:
 281             # deleate this instance's security groups
 282             for security_group in instance.security_groups:
 283                 # dont delete the default security group
 284                 if security_group.name != 'default':
 285                     security_group_manager.delete_security_group(security_group.name)
 286             # destroy instance
 287             self.driver.shell.db.instance_destroy(instance.id)
 288         return 1
 289
 290     def stop_instances(self, project_name):
 291         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 292         for instance in instances:
 293             self.driver.shell.db.instance_stop(instance.id)
 294         return 1
 295
 296     def update_instances(self, project_name):
 297         pass