sfa/openstack/osaggregate.py

   1
   2 from sfa.util.faults import SfaAPIError
   3 from sfa.rspecs.rspec import RSpec
   4 from sfa.rspecs.elements.hardware_type import HardwareType
   5 from sfa.rspecs.elements.node import Node
   6 from sfa.rspecs.elements.sliver import Sliver
   7 from sfa.rspecs.elements.login import Login
   8 from sfa.rspecs.elements.services import Services
   9 from sfa.util.xrn import Xrn
  10 from sfa.util.osxrn import OSXrn
  11 from sfa.rspecs.version_manager import VersionManager
  12
  13 class OSAggregate:
  14
  15     def __init__(self, driver):
  16         self.driver = driver
  17
  18     def instance_to_sliver(self, instance, slice_xrn=None):
  19         # should include?
  20         # * instance.image_ref
  21         # * instance.kernel_id
  22         # * instance.ramdisk_id
  23         import nova.db.sqlalchemy.models
  24         name=None
  25         type=None
  26         sliver_id = None
  27         if isinstance(instance, dict):
  28             # this is an isntance type dict
  29             name = instance['name']
  30             type = instance['name']
  31         elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
  32             # this is an object that describes a running instance
  33             name = instance.display_name
  34             type = instance.instance_type.name
  35         else:
  36             raise SfaAPIError("instnace must be an instance_type dict or" + \
  37                                " a nova.db.sqlalchemy.models.Instance object")
  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': name,
  44                          'type': 'plos-' + type,
  45                          'tags': []})
  46         return sliver
  47
  48     def get_rspec(self, slice_xrn=None, version=None, options={}):
  49         version_manager = VersionManager()
  50         version = version_manager.get_version(version)
  51         if not slice_xrn:
  52             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  53             nodes = self.get_aggregate_nodes()
  54         else:
  55             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  56             nodes = self.get_slice_nodes(slice_xrn)
  57         rspec = RSpec(version=rspec_version, user_options=options)
  58         rspec.version.add_nodes(nodes)
  59         return rspec.toxml()
  60
  61     def get_slice_nodes(self, slice_xrn):
  62         name = OSXrn(xrn = slice_xrn).name
  63         instances = self.driver.shell.db.instance_get_all_by_project(name)
  64         rspec_nodes = []
  65         for instance in instances:
  66             rspec_node = Node()
  67             xrn = OSXrn(instance.hostname, 'node')
  68             rspec_node['component_id'] = xrn.urn
  69             rspec_node['component_name'] = xrn.name
  70             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  71             sliver = self.instance_to_sliver(instance)
  72             rspec_node['slivers'] = [sliver]
  73             rspec_nodes.append(rspec_node)
  74         return rspec_nodes
  75
  76     def get_aggregate_nodes(self):
  77
  78         zones = self.driver.shell.db.zone_get_all()
  79         if not zones:
  80             zones = ['cloud']
  81         else:
  82             zones = [zone.name for zone in zones]
  83
  84         # available sliver/instance/vm types
  85         instances = self.driver.shell.db.instance_type_get_all().values()
  86         # available images
  87         images = self.driver.shell.image_manager.detail()
  88         disk_images = []
  89         for image in images:
  90             if image.container_format == 'ami':
  91                 img = Image()
  92                 img['name'] = img.name
  93                 img['description'] = img.name
  94                 img['os'] = img.name
  95                 img['version'] = img.name
  96                 disk_images.append(img)
  97
  98         rspec_nodes = []
  99         for zone in zones:
 100             rspec_node = Node()
 101             xrn = OSXrn(zone, 'node')
 102             rspec_node['component_id'] = xrn.urn
 103             rspec_node['component_name'] = xrn.name
 104             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 105             rspec_node['exclusive'] = 'false'
 106             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 107                                                 HardwareType({'name': 'pc'})]
 108             slivers = []
 109             for instance in instances:
 110                 for image in images:
 111                     sliver = self.instance_to_sliver(instance)
 112                     sliver['disk_images'] = disk_images
 113
 114             slivers = [self.instance_to_sliver(inst) for inst in instances]
 115             rspec_node['slivers'] = slivers
 116             rspec_nodes.append(rspec_node)
 117
 118         return rspec_nodes
 119
 120
 121     def verify_slice(self, slicename, users, options={}):
 122         """
 123         Create the slice if it doesn't alredy exist
 124         """
 125         import nova.exception.ProjectNotFound
 126         try:
 127             slice = self.driver.shell.auth_manager.get_project(slicename)
 128         except nova.exception.ProjectNotFound:
 129             # convert urns to user names
 130             usernames = [Xrn(user['urn']).get_leaf() for user in users]
 131             # assume that the first user is the project manager
 132             proj_manager = usernames[0]
 133             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 134
 135     def verify_slice_users(self, slicename, users, options={}):
 136         """
 137         Add requested users to the specified slice.
 138         """
 139
 140         # There doesn't seem to be an effcient way to
 141         # look up all the users of a project, so lets not
 142         # attempt to remove stale users . For now lets just
 143         # ensure that the specified users exist
 144         for user in users:
 145             username = Xrn(user['urn']).get_leaf()
 146             try:
 147                 self.driver.shell.auth_manager.get_user(username)
 148             except nova.exception.UserNotFound:
 149                 self.driver.shell.auth_manager.create_user(username)
 150             self.verify_user_keys(username, user['keys'], options)
 151
 152     def verify_user_keys(self, username, keys, options={}):
 153         """
 154         Add requested keys.
 155         """
 156         append = options.get('append', True)
 157         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 158         existing_pub_keys = [key.public_key for key in existing_keys]
 159         removed_pub_keys = set(existing_pub_keys).difference(keys)
 160         added_pub_keys = set(keys).difference(existing_pub_keys)
 161
 162         # add new keys
 163         for public_key in added_pub_keys:
 164             key = {}
 165             key['user_id'] = username
 166             key['name'] =  username
 167             key['public'] = public_key
 168             self.driver.shell.db.key_pair_create(key)
 169
 170         # remove old keys
 171         if not append:
 172             for key in existing_keys:
 173                 if key.public_key in removed_pub_keys:
 174                     self.driver.shell.db.key_pair_destroy(username, key.name)
 175
 176     def verify_instances(self, slicename, rspec):
 177         rsepc = RSpec(rspec)
 178         nodes = rspec.version.get_nodes_with_slivers()
 179         old_instances = self.driver.shell.db.instance_get_all_by_project(name)
 180         for node in nodes:
 181             for slivers in node.get('slivers', []):
 182                 pass
 183                 # get instance type
 184                 # get image
 185                 # start instance