sfa/openstack/osaggregate.py

   1 import base64
   2
   3 from nova.exception import ImageNotFound
   4 from nova.api.ec2.cloud import CloudController
   5 from sfa.util.faults import SfaAPIError
   6 from sfa.rspecs.rspec import RSpec
   7 from sfa.rspecs.elements.hardware_type import HardwareType
   8 from sfa.rspecs.elements.node import Node
   9 from sfa.rspecs.elements.sliver import Sliver
  10 from sfa.rspecs.elements.login import Login
  11 from sfa.rspecs.elements.disk_image import DiskImage
  12 from sfa.rspecs.elements.services import Services
  13 from sfa.util.xrn import Xrn
  14 from sfa.util.osxrn import OSXrn
  15 from sfa.rspecs.version_manager import VersionManager
  16 from sfa.openstack.image import Image
  17
  18
  19 def instance_to_sliver(instance, slice_xrn=None):
  20     # should include?
  21     # * instance.image_ref
  22     # * instance.kernel_id
  23     # * instance.ramdisk_id
  24     import nova.db.sqlalchemy.models
  25     name=None
  26     type=None
  27     sliver_id = None
  28     if isinstance(instance, dict):
  29         # this is an isntance type dict
  30         name = instance['name']
  31         type = instance['name']
  32     elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
  33         # this is an object that describes a running instance
  34         name = instance.display_name
  35         type = instance.instance_type.name
  36     else:
  37         raise SfaAPIError("instnace must be an instance_type dict or" + \
  38                            " a nova.db.sqlalchemy.models.Instance object")
  39     if slice_xrn:
  40         xrn = Xrn(slice_xrn, 'slice')
  41         sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
  42
  43     sliver = Sliver({'slice_id': sliver_id,
  44                      'name': name,
  45                      'type': 'plos-' + type,
  46                      'tags': []})
  47     return sliver
  48
  49
  50 class OSAggregate:
  51
  52     def __init__(self, driver):
  53         self.driver = driver
  54
  55     def get_rspec(self, slice_xrn=None, version=None, options={}):
  56         version_manager = VersionManager()
  57         version = version_manager.get_version(version)
  58         if not slice_xrn:
  59             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  60             nodes = self.get_aggregate_nodes()
  61         else:
  62             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  63             nodes = self.get_slice_nodes(slice_xrn)
  64         rspec = RSpec(version=rspec_version, user_options=options)
  65         rspec.version.add_nodes(nodes)
  66         return rspec.toxml()
  67
  68     def get_slice_nodes(self, slice_xrn):
  69         image_manager = Image(self.driver)
  70         name = OSXrn(xrn = slice_xrn).name
  71         instances = self.driver.shell.db.instance_get_all_by_project(name)
  72         rspec_nodes = []
  73         for instance in instances:
  74             rspec_node = Node()
  75             xrn = OSXrn(instance.hostname, 'node')
  76             rspec_node['component_id'] = xrn.urn
  77             rspec_node['component_name'] = xrn.name
  78             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  79             sliver = instance_to_sliver(instance)
  80             disk_image = image_manager.get_disk_image(instance.image_ref)
  81             sliver['disk_images'] = [Image.disk_image_to_rspec_object(disk_image)]
  82             rspec_node['slivers'] = [sliver]
  83             rspec_nodes.append(rspec_node)
  84         return rspec_nodes
  85
  86     def get_aggregate_nodes(self):
  87
  88         zones = self.driver.shell.db.zone_get_all()
  89         if not zones:
  90             zones = ['cloud']
  91         else:
  92             zones = [zone.name for zone in zones]
  93
  94         # available sliver/instance/vm types
  95         instances = self.driver.shell.db.instance_type_get_all().values()
  96         # available images
  97         image_manager = Image(self.driver)
  98         disk_images = image_manager.get_available_disk_images()
  99         disk_image_objects = [Image.disk_image_to_rspec_object(image) \
 100                                for image in disk_images]
 101         rspec_nodes = []
 102         for zone in zones:
 103             rspec_node = Node()
 104             xrn = OSXrn(zone, 'node')
 105             rspec_node['component_id'] = xrn.urn
 106             rspec_node['component_name'] = xrn.name
 107             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 108             rspec_node['exclusive'] = 'false'
 109             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 110                                                 HardwareType({'name': 'pc'})]
 111             slivers = []
 112             for instance in instances:
 113                 sliver = instance_to_sliver(instance)
 114                 sliver['disk_images'] = disk_image_objects
 115                 slivers.append(sliver)
 116
 117             rspec_node['slivers'] = slivers
 118             rspec_nodes.append(rspec_node)
 119
 120         return rspec_nodes
 121
 122
 123     def create_project(self, slicename, users, options={}):
 124         """
 125         Create the slice if it doesn't alredy exist. Create user
 126         accounts that don't already exist
 127         """
 128         import nova.exception.ProjectNotFound
 129         try:
 130             slice = self.driver.shell.auth_manager.get_project(slicename)
 131         except nova.exception.ProjectNotFound:
 132             # assume that the first user is the project manager
 133             proj_manager = Xrn(users[0]['urn']).get_leaf()
 134             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 135
 136         for user in users:
 137             username = Xrn(user['urn']).get_leaf()
 138             try:
 139                 self.driver.shell.auth_manager.get_user(username)
 140             except nova.exception.UserNotFound:
 141                 self.driver.shell.auth_manager.create_user(username)
 142             self.verify_user_keys(username, user['keys'], options)
 143
 144     def verify_user_keys(self, username, keys, options={}):
 145         """
 146         Add requested keys.
 147         """
 148         append = options.get('append', True)
 149         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 150         existing_pub_keys = [key.public_key for key in existing_keys]
 151         removed_pub_keys = set(existing_pub_keys).difference(keys)
 152         added_pub_keys = set(keys).difference(existing_pub_keys)
 153         pubkeys = []
 154         # add new keys
 155         for public_key in added_pub_keys:
 156             key = {}
 157             key['user_id'] = username
 158             key['name'] =  username
 159             key['public'] = public_key
 160             self.driver.shell.db.key_pair_create(key)
 161
 162         # remove old keys
 163         if not append:
 164             for key in existing_keys:
 165                 if key.public_key in removed_pub_keys:
 166                     self.driver.shell.db.key_pair_destroy(username, key.name)
 167
 168
 169     def create_security_group(self, group_name, fw_rules=[]):
 170         security_group = SecurityGroup(self.driver)
 171         security_group.create_security_group(group_name)
 172         for rule in fw_rules:
 173             security_group.add_rule_to_group(group_name,
 174                                              protocol = rule.get('protocol'),
 175                                              cidr_ip = rule.get('cidr_ip'),
 176                                              port_range = rule.get('port_range'),
 177                                              icmp_type_code = rule.get('icmp_type_code'))
 178
 179     def add_rule_to_security_group(self, group_name, **kwds):
 180         security_group = SecurityGroup(self.driver)
 181         security_group.add_rule_to_group(group_name=group_name,
 182                                          protocol=kwds.get('protocol'),
 183                                          cidr_ip =kwds.get('cidr_ip'),
 184                                          icmp_type_code = kwds.get('icmp_type_code'))
 185
 186
 187     def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
 188                          instance_type, key_name, user_data):
 189         conn  = self.driver.euca_shell
 190         logger.info('Reserving an instance: image: %s, kernel: ' + \
 191                     '%s, ramdisk: %s, type: %s, key: %s' % \
 192                     (image_id, kernel_id, ramdisk_id,
 193                     instance_type, key_name))
 194         try:
 195             reservation = conn.run_instances(image_id=image_id,
 196                                              kernel_id=kernel_id,
 197                                              ramdisk_id=ramdisk_id,
 198                                              instance_type=instance_type,
 199                                              key_name=key_name,
 200                                              user_data = user_data,
 201                                              security_groups=group_names)
 202                                              #placement=zone,
 203                                              #min_count=min_count,
 204                                              #max_count=max_count,
 205
 206         except EC2ResponseError, ec2RespError:
 207             logger.log_exc(ec2RespError)
 208
 209     def run_instances(self, slicename, rspec, keyname, pubkeys):
 210         """
 211         Create the security groups and instances.
 212         """
 213         # the default image to use for instnaces that dont
 214         # explicitly request an image.
 215         # Just choose the first available image for now.
 216         image_manager = Image(self.driver)
 217         available_images = image_manager.get_available_disk_images()
 218         default_image = image_manager.get_disk_images()[0]
 219         default_ami_id = CloudController.image_ec2_id(default_image['ami']['id'])
 220         default_aki_id = CloudController.image_ec2_id(default_image['aki']['id'])
 221         default_ari_id = CloudController.image_ec2_id(default_image['ari']['id'])
 222
 223         # get requested slivers
 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             instance_types = node.get('slivers', [])
 229             if isinstance(instance_types, list):
 230                 # iterate over sliver/instance types
 231                 for instance_type in instance_types:
 232                     fw_rules = instance_type.get('fw_rules', [])
 233                     # Each sliver get's its own security group.
 234                     # Keep security group names unique by appending some random
 235                     # characters on end.
 236                     group_name = "_".join([slicename,
 237                                            instance_type['name'],
 238                                            base64.b64encode(os.urandom(6))])
 239                     self.create_security_group(group_name, fw_rules)
 240                     ami_id = default_ami_id
 241                     aki_id = default_aki_id
 242                     ari_id = default_ari_id
 243                     req_image = instance_type.get('disk_images')
 244                     if req_image and isinstance(req_image, list):
 245                         req_image_name = req_image[0]['name']
 246                         disk_image = image_manager.get_disk_image(name=req_image_name)
 247                         if disk_image:
 248                             ami_id = CloudController.image_ec2_id(disk_image['ami']['id'])
 249                             aki_id = CloudController.image_ec2_id(disk_image['aki']['id'])
 250                             ari_id = CloudController.image_ec2_id(disk_image['ari']['id'])
 251                     # start the instance
 252                     self.reserve_instance(image_id=ami_id,
 253                                           kernel_id=aki_id,
 254                                           ramdisk_id=ari_id,
 255                                           instance_type=instance_type['name'],
 256                                           key_name=keyname,
 257                                           user_data=pubkeys,
 258                                           group_name=group_name)
 259
 260
 261     def delete_instances(self, project_name):
 262         project = self.driver.shell.project_get(project_name)
 263         if not project:
 264             return 1
 265         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 266         security_group_manager = SecurityGroup(self)
 267         for instance in instances:
 268             # deleate this instance's security groups
 269             for security_group in instance.security_groups:
 270                 # dont delete the default security group
 271                 if security_group.name != 'default':
 272                     security_group_manager.delete_security_group(security_group.name)
 273             # destroy instance
 274             self.driver.shell.db.instance_destroy(instance.instance_id)
 275         return 1
 276
 277     def stop_instances(self, project_name):
 278         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 279         for instance in instances:
 280             self.driver.shell.db.instance_stop(instance.instance_id)
 281         return 1
 282
 283     def update_instances(self, project_name):
 284         pass