sfa/openstack/osaggregate.py

   1 from sfa.rspecs.rspec import RSpec
   2 from sfa.rspecs.elements.hardware_type import HardwareType
   3 from sfa.rspecs.elements.node import Node
   4 from sfa.rspecs.elements.sliver import Sliver
   5 from sfa.rspecs.elements.login import Login
   6 from sfa.rspecs.elements.services import Services
   7 from sfa.util.xrn import Xrn
   8 from sfa.util.osxrn import OSXrn
   9 from sfa.rspecs.version_manager import VersionManager
  10
  11 class OSAggregate:
  12
  13     def __init__(self, driver):
  14         self.driver = driver
  15
  16     def instance_to_sliver(self, instance, slice_xrn=None):
  17         sliver_id = None
  18         name = None
  19         if slice_xrn:
  20             name = OSXrn(slice_xrn, 'slice').name
  21             sliver_id = xrn.sliver_id(instance.instance_id, "")
  22
  23         # should include:
  24         # * instance.image_ref
  25         # * instance.kernel_id
  26         # * instance.ramdisk_id
  27         name=None
  28         if hasattr(instance, 'name'):
  29             name = instance.name
  30         elif hasattr(instance, 'display_name'):
  31             name = instance.display_name
  32         sliver = Sliver({'slice_id': sliver_id,
  33                          'name': name,
  34                          'type': 'plos-' + instance['name'],
  35                          'tags': []})
  36         return sliver
  37
  38     def get_rspec(self, slice_xrn=None, vsersion=None, options={}):
  39         version_manager = VersionManager()
  40         version = version_manager.get_version(version)
  41         if not slice_xrn:
  42             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  43             nodes = self.get_aggregate_nodes()
  44         else:
  45             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  46             nodes = self.get_slice_nodes(slice_xrn)
  47
  48         rspec.version.add_nodes(nodes)
  49         return rspec.toxml()
  50
  51     def get_slice_nodes(self, slice_xrn):
  52         name = OSXrn(xrn = slice_xrn).name
  53         instances = self.driver.shell.instance_get_all_by_project(name)
  54         rspec_nodes = []
  55         for instance in instances:
  56             rspec_node = Node()
  57             xrn = OSXrn(instance.hostname, 'node')
  58             rspec_node['component_id'] = xrn.urn
  59             rspec_node['component_name'] = xrn.name
  60             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  61             sliver = self.instance_to_sliver(instance)
  62             rspec_node['slivers'] = [sliver]
  63             rspec_nodes.append(rspec_node)
  64         return rspec_nodes
  65
  66     def get_aggregate_nodes(self):
  67
  68         zones = self.driver.shell.zone_get_all()
  69         if not zones:
  70             zones = ['cloud']
  71         else:
  72             zones = [zone.name for zone in zones]
  73
  74         rspec_nodes = []
  75         for zone in zones:
  76             rspec_node = Node()
  77             xrn = OSXrn(zone, 'node')
  78             rspec_node['component_id'] = xrn.urn
  79             rspec_node['component_name'] = xrn.name
  80             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  81             rspec_node['exclusive'] = 'false'
  82             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
  83                                                 HardwareType({'name': 'pc'})]
  84             instances = self.driver.shell.instance_type_get_all().values()
  85             slivers = [self.instance_to_sliver(inst) for inst in instances]
  86             rspec_node['slivers'] = slivers
  87             rspec_nodes.append(rspec_node)
  88
  89         return rspec_node
  90
  91
  92     def verify_slice(self, slicename, users, options={}):
  93         """
  94         Create the slice if it doesn't alredy exist
  95         """
  96         try:
  97             slice = self.driver.shell.auth_manager.get_project(slicename)
  98         except nova.exception.ProjectNotFound:
  99             # convert urns to user names
 100             usernames = [Xrn(user['urn']).get_leaf() for user in users]
 101             # assume that the first user is the project manager
 102             proj_manager = usernames[0]
 103             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 104
 105     def verify_users(self, slicename, users, options={}):
 106         """
 107         Add requested users to the specified slice.
 108         """
 109
 110         # There doesn't seem to be an effcient way to
 111         # look up all the users of a project, so lets not
 112         # attempt to remove stale users . For now lets just
 113         # ensure that the specified users exist
 114         for user in users:
 115             username = Xrn(user['urn']).get_leaf()
 116             try:
 117                 self.driver.shell.auth_manager.get_user(username)
 118             except nova.exception.UserNotFound:
 119                 self.driver.shell.auth_manager.create_user(username)
 120             self.verify_user_keys(username, user['keys'], options)
 121
 122     def verify_user_keys(self, username, keys, options={}):
 123         """
 124         Add requested keys.
 125         """
 126         append = options.get('append', True)
 127         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 128         existing_pub_keys = [key.public_key for key in existing_keys]
 129         removed_pub_keys = set(existing_pub_keys).difference(keys)
 130         added_pub_keys = set(keys).difference(existing_pub_keys)
 131
 132         # add new keys
 133         for public_key in added_pub_keys:
 134             key = {}
 135             key['user_id'] = username
 136             key['name'] =  username
 137             key['public'] = public_key
 138             self.driver.shell.db.key_pair_create(key)
 139
 140         # remove old keys
 141         if not append:
 142             for key in existing_keys:
 143                 if key.public_key in removed_pub_keys:
 144                     self.driver.shell.db.key_pair_destroy(username, key.name)
 145
 146     def verify_instances(self, slicename, rspec):
 147         pass