sfa/openstack/osaggregate.py

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