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         rspec_nodes = []
  85         for zone in zones:
  86             rspec_node = Node()
  87             xrn = OSXrn(zone, 'node')
  88             rspec_node['component_id'] = xrn.urn
  89             rspec_node['component_name'] = xrn.name
  90             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  91             rspec_node['exclusive'] = 'false'
  92             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
  93                                                 HardwareType({'name': 'pc'})]
  94             instances = self.driver.shell.db.instance_type_get_all().values()
  95             slivers = [self.instance_to_sliver(inst) for inst in instances]
  96             rspec_node['slivers'] = slivers
  97             rspec_nodes.append(rspec_node)
  98
  99         return rspec_nodes
 100
 101
 102     def verify_slice(self, slicename, users, options={}):
 103         """
 104         Create the slice if it doesn't alredy exist
 105         """
 106         import nova.exception.ProjectNotFound
 107         try:
 108             slice = self.driver.shell.auth_manager.get_project(slicename)
 109         except nova.exception.ProjectNotFound:
 110             # convert urns to user names
 111             usernames = [Xrn(user['urn']).get_leaf() for user in users]
 112             # assume that the first user is the project manager
 113             proj_manager = usernames[0]
 114             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 115
 116     def verify_slice_users(self, slicename, users, options={}):
 117         """
 118         Add requested users to the specified slice.
 119         """
 120
 121         # There doesn't seem to be an effcient way to
 122         # look up all the users of a project, so lets not
 123         # attempt to remove stale users . For now lets just
 124         # ensure that the specified users exist
 125         for user in users:
 126             username = Xrn(user['urn']).get_leaf()
 127             try:
 128                 self.driver.shell.auth_manager.get_user(username)
 129             except nova.exception.UserNotFound:
 130                 self.driver.shell.auth_manager.create_user(username)
 131             self.verify_user_keys(username, user['keys'], options)
 132
 133     def verify_user_keys(self, username, keys, options={}):
 134         """
 135         Add requested keys.
 136         """
 137         append = options.get('append', True)
 138         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 139         existing_pub_keys = [key.public_key for key in existing_keys]
 140         removed_pub_keys = set(existing_pub_keys).difference(keys)
 141         added_pub_keys = set(keys).difference(existing_pub_keys)
 142
 143         # add new keys
 144         for public_key in added_pub_keys:
 145             key = {}
 146             key['user_id'] = username
 147             key['name'] =  username
 148             key['public'] = public_key
 149             self.driver.shell.db.key_pair_create(key)
 150
 151         # remove old keys
 152         if not append:
 153             for key in existing_keys:
 154                 if key.public_key in removed_pub_keys:
 155                     self.driver.shell.db.key_pair_destroy(username, key.name)
 156
 157     def verify_instances(self, slicename, rspec):
 158         rsepc = RSpec(rspec)
 159         nodes = rspec.version.get_nodes_with_slivers()
 160         old_instances = self.driver.shell.db.instance_get_all_by_project(name)
 161         for node in nodes:
 162             for slivers in node.get('slivers', []):
 163                 pass
 164                 # get instance type
 165                 # get image
 166                 # start instance