sfa/plc/slices.py

   1 ### $Id$
   2 ### $URL$
   3
   4 import datetime
   5 import time
   6 import traceback
   7 import sys
   8
   9 from types import StringTypes
  10 from sfa.util.misc import *
  11 from sfa.util.rspec import *
  12 from sfa.util.specdict import *
  13 from sfa.util.faults import *
  14 from sfa.util.storage import *
  15 from sfa.util.policy import Policy
  16 from sfa.util.debug import log
  17 from sfa.server.aggregate import Aggregates
  18 from sfa.server.registry import Registries
  19
  20 class Slices(SimpleStorage):
  21
  22     def __init__(self, api, ttl = .5):
  23         self.api = api
  24         self.ttl = ttl
  25         self.threshold = None
  26         path = self.api.config.SFA_BASE_DIR
  27         filename = ".".join([self.api.interface, self.api.hrn, "slices"])
  28         filepath = path + os.sep + filename
  29         self.slices_file = filepath
  30         SimpleStorage.__init__(self, self.slices_file)
  31         self.policy = Policy(self.api)
  32         self.load()
  33
  34
  35     def get_peer(self, hrn):
  36         # Becaues of myplc federation,  we first need to determine if this
  37         # slice belongs to out local plc or a myplc peer. We will assume it
  38         # is a local site, unless we find out otherwise
  39         peer = None
  40
  41         # get this slice's authority (site)
  42         slice_authority = get_authority(hrn)
  43
  44         # get this site's authority (sfa root authority or sub authority)
  45         site_authority = get_authority(slice_authority).lower()
  46
  47         # check if we are already peered with this site_authority, if so
  48         peers = self.api.plshell.GetPeers(self.api.plauth, {}, ['peer_id', 'peername', 'shortname', 'hrn_root'])
  49         for peer_record in peers:
  50             names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)]
  51             if site_authority in names:
  52                 peer = peer_record['shortname']
  53
  54         return peer
  55
  56     def refresh(self):
  57         """
  58         Update the cached list of slices
  59         """
  60         # Reload components list
  61         now = datetime.datetime.now()
  62         if not self.has_key('threshold') or not self.has_key('timestamp') or \
  63            now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))):
  64             if self.api.interface in ['aggregate']:
  65                 self.refresh_slices_aggregate()
  66             elif self.api.interface in ['slicemgr']:
  67                 self.refresh_slices_smgr()
  68
  69     def refresh_slices_aggregate(self):
  70         slices = self.api.plshell.GetSlices(self.api.plauth, {'peer_id': None}, ['name'])
  71         slice_hrns = [slicename_to_hrn(self.api.hrn, slice['name']) for slice in slices]
  72
  73          # update timestamp and threshold
  74         timestamp = datetime.datetime.now()
  75         hr_timestamp = timestamp.strftime(self.api.time_format)
  76         delta = datetime.timedelta(hours=self.ttl)
  77         threshold = timestamp + delta
  78         hr_threshold = threshold.strftime(self.api.time_format)
  79
  80         slice_details = {'hrn': slice_hrns,
  81                          'timestamp': hr_timestamp,
  82                          'threshold': hr_threshold
  83                         }
  84         self.update(slice_details)
  85         self.write()
  86
  87
  88     def refresh_slices_smgr(self):
  89         slice_hrns = []
  90         aggregates = Aggregates(self.api)
  91         credential = self.api.getCredential()
  92         for aggregate in aggregates:
  93             try:
  94                 slices = aggregates[aggregate].get_slices(credential)
  95                 slice_hrns.extend(slices)
  96             except:
  97                 print >> log, "Error calling slices at aggregate %(aggregate)s" % locals()
  98          # update timestamp and threshold
  99         timestamp = datetime.datetime.now()
 100         hr_timestamp = timestamp.strftime(self.api.time_format)
 101         delta = datetime.timedelta(hours=self.ttl)
 102         threshold = timestamp + delta
 103         hr_threshold = threshold.strftime(self.api.time_format)
 104
 105         slice_details = {'hrn': slice_hrns,
 106                          'timestamp': hr_timestamp,
 107                          'threshold': hr_threshold
 108                         }
 109         self.update(slice_details)
 110         self.write()
 111
 112
 113     def delete_slice(self, hrn):
 114         if self.api.interface in ['aggregate']:
 115             self.delete_slice_aggregate(hrn)
 116         elif self.api.interface in ['slicemgr']:
 117             self.delete_slice_smgr(hrn)
 118
 119     def delete_slice_aggregate(self, hrn):
 120
 121         slicename = hrn_to_pl_slicename(hrn)
 122         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename})
 123         if not slices:
 124             return 1
 125         slice = slices[0]
 126
 127         # determine if this is a peer slice
 128         peer = self.get_peer(hrn)
 129         if peer:
 130             self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer)
 131         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, slice['node_ids'])
 132         if peer:
 133             self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id'])
 134         return 1
 135
 136     def delete_slice_smgr(self, hrn):
 137         credential = self.api.getCredential()
 138         aggregates = Aggregates(self.api)
 139         for aggregate in aggregates:
 140             try:
 141                 aggregates[aggregate].delete_slice(credential, hrn)
 142             except:
 143                 print >> log, "Error calling list nodes at aggregate %s" % aggregate
 144                 traceback.print_exc(log)
 145                 exc_type, exc_value, exc_traceback = sys.exc_info()
 146                 print exc_type, exc_value, exc_traceback
 147
 148     def create_slice(self, hrn, rspec):
 149
 150         # check our slice policy before we procede
 151         whitelist = self.policy['slice_whitelist']
 152         blacklist = self.policy['slice_blacklist']
 153
 154         if whitelist and hrn not in whitelist or \
 155            blacklist and hrn in blacklist:
 156             policy_file = self.policy.policy_file
 157             print >> log, "Slice %(hrn)s not allowed by policy %(policy_file)s" % locals()
 158             return 1
 159
 160         if self.api.interface in ['aggregate']:
 161             self.create_slice_aggregate(hrn, rspec)
 162         elif self.api.interface in ['slicemgr']:
 163             self.create_slice_smgr(hrn, rspec)
 164
 165     def create_slice_aggregate(self, hrn, rspec):
 166
 167         # Determine if this is a peer slice
 168         peer = self.get_peer(hrn)
 169
 170         spec = Rspec(rspec)
 171         # Get the slice record from geni
 172         slice = {}
 173         slice_record = None
 174         registries = Registries(self.api)
 175         registry = registries[self.api.hrn]
 176         credential = self.api.getCredential()
 177         records = registry.resolve(credential, hrn)
 178         for record in records:
 179             if record.get_type() in ['slice']:
 180                 slice_record = record.as_dict()
 181         if not slice_record:
 182             raise RecordNotFound(hrn)
 183
 184         # Make sure slice exists at plc, if it doesnt add it
 185         slicename = hrn_to_pl_slicename(hrn)
 186         slices = self.api.plshell.GetSlices(self.api.plauth, [slicename], ['slice_id', 'node_ids'])
 187         if not slices:
 188             parts = slicename.split("_")
 189             login_base = parts[0]
 190             # if site doesnt exist add it
 191             sites = self.api.plshell.GetSites(self.api.plauth, [login_base])
 192             if not sites:
 193                 authority = get_authority(hrn)
 194                 site_records = registry.resolve(credential, authority)
 195                 site_record = {}
 196                 if not site_records:
 197                     raise RecordNotFound(authority)
 198                 site_record = site_records[0]
 199                 site = site_record.as_dict()
 200
 201                  # add the site
 202                 remote_site_id = site.pop('site_id')
 203                 site_id = self.api.plshell.AddSite(self.api.plauth, site)
 204                 # this belongs to a peer
 205                 if peer:
 206                     self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', site_id, peer, remote_site_id)
 207             else:
 208                 site = sites[0]
 209
 210             # create slice object
 211             slice_fields = {}
 212             slice_keys = ['name', 'url', 'description']
 213             for key in slice_keys:
 214                 if key in slice_record and slice_record[key]:
 215                     slice_fields[key] = slice_record[key]
 216
 217             # add the slice
 218             slice_id = self.api.plshell.AddSlice(self.api.plauth, slice_fields)
 219             slice = slice_fields
 220
 221             #this belongs to a peer
 222             if peer:
 223                 self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice_id, peer, slice_record['pointer'])
 224             slice['node_ids'] = []
 225         else:
 226             slice = slices[0]
 227             slice_id = slice['slice_id']
 228         # get the list of valid slice users from the registry and make
 229         # they are added to the slice
 230         researchers = record.get('researcher', [])
 231         for researcher in researchers:
 232             person_record = {}
 233             person_records = registry.resolve(credential, researcher)
 234             for record in person_records:
 235                 if record.get_type() in ['user']:
 236                     person_record = record
 237             if not person_record:
 238                 pass
 239             person_dict = person_record.as_dict()
 240             persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids'])
 241
 242             # Create the person record
 243             if not persons:
 244                 person_id=self.api.plshell.AddPerson(self.api.plauth, person_dict)
 245
 246                 # The line below enables the user account on the remote
 247                 # aggregate soon after it is created. without this the
 248                 # user key is not transfered to the slice (as GetSlivers
 249                 # returns key of only enabled users), which prevents the
 250                 # user from login to the slice. We may do additional checks
 251                 # before enabling the user.
 252
 253                 self.api.plshell.UpdatePerson(self.api.plauth, person_id, {'enabled' : True})
 254                 if peer:
 255                     self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_record['pointer'])
 256                 key_ids = []
 257             else:
 258                 person_id = persons[0]['person_id']
 259                 key_ids = persons[0]['key_ids']
 260
 261             # if this is a peer person, we must unbind them from the peer or PLCAPI will throw
 262             # an error
 263             if peer:
 264                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer)
 265             self.api.plshell.AddPersonToSlice(self.api.plauth, person_dict['email'], slicename)
 266             if peer:
 267                self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_record['pointer'])
 268
 269             # Get this users local keys
 270             keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key'])
 271             keys = [key['key'] for key in keylist]
 272
 273             # add keys that arent already there
 274             for personkey in person_dict['keys']:
 275                 if personkey not in keys:
 276                     key = {'key_type': 'ssh', 'key': personkey}
 277                     if peer:
 278                         self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer)
 279                     self.api.plshell.AddPersonKey(self.api.plauth, person_dict['email'], key)
 280                     if peer:
 281                         self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_record['pointer'])
 282
 283         # find out where this slice is currently running
 284         nodelist = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname'])
 285         hostnames = [node['hostname'] for node in nodelist]
 286
 287         # get netspec details
 288         nodespecs = spec.getDictsByTagName('NodeSpec')
 289         nodes = []
 290         for nodespec in nodespecs:
 291             if isinstance(nodespec['name'], list):
 292                 nodes.extend(nodespec['name'])
 293             elif isinstance(nodespec['name'], StringTypes):
 294                 nodes.append(nodespec['name'])
 295
 296         # remove nodes not in rspec
 297         deleted_nodes = list(set(hostnames).difference(nodes))
 298         # add nodes from rspec
 299         added_nodes = list(set(nodes).difference(hostnames))
 300
 301         if peer:
 302             self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice_id, peer)
 303         self.api.plshell.AddSliceToNodes(self.api.plauth, slicename, added_nodes)
 304         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, deleted_nodes)
 305         if peer:
 306             self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice_id, peer, slice_record['pointer'])
 307
 308         return 1
 309
 310     def create_slice_smgr(self, hrn, rspec):
 311         spec = Rspec()
 312         tempspec = Rspec()
 313         spec.parseString(rspec)
 314         slicename = hrn_to_pl_slicename(hrn)
 315         specDict = spec.toDict()
 316         if specDict.has_key('Rspec'): specDict = specDict['Rspec']
 317         if specDict.has_key('start_time'): start_time = specDict['start_time']
 318         else: start_time = 0
 319         if specDict.has_key('end_time'): end_time = specDict['end_time']
 320         else: end_time = 0
 321
 322         rspecs = {}
 323         aggregates = Aggregates(self.api)
 324         credential = self.api.getCredential()
 325         # only attempt to extract information about the aggregates we know about
 326         for aggregate in aggregates:
 327             netspec = spec.getDictByTagNameValue('NetSpec', aggregate)
 328             if netspec:
 329                 # creat a plc dict
 330                 resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec}
 331                 resourceDict = {'Rspec': resources}
 332                 tempspec.parseDict(resourceDict)
 333                 rspecs[aggregate] = tempspec.toxml()
 334
 335         # notify the aggregates
 336         for aggregate in rspecs.keys():
 337             try:
 338                 # send the whloe rspec to the local aggregate
 339                 if aggregate in [self.api.hrn]:
 340                     aggregates[aggregate].create_slice(credential, hrn, rspec)
 341                 else:
 342                     aggregates[aggregate].create_slice(credential, hrn, rspecs[aggregate])
 343             except:
 344                 print >> log, "Error creating slice %(hrn)s at aggregate %(aggregate)s" % locals()
 345                 traceback.print_exc()
 346         return 1
 347
 348
 349     def start_slice(self, hrn):
 350         if self.api.interface in ['aggregate']:
 351             self.start_slice_aggregate(hrn)
 352         elif self.api.interface in ['slicemgr']:
 353             self.start_slice_smgr(hrn)
 354
 355     def start_slice_aggregate(self, hrn):
 356         slicename = hrn_to_pl_slicename(hrn)
 357         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 358         if not slices:
 359             raise RecordNotFound(hrn)
 360         slice_id = slices[0]
 361         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 362         attribute_id = attreibutes[0]['slice_attribute_id']
 363         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "1" )
 364         return 1
 365
 366     def start_slice_smgr(self, hrn):
 367         credential = self.api.getCredential()
 368         aggregates = Aggregates(self.api)
 369         for aggregate in aggregates:
 370             aggregates[aggregate].start_slice(credential, hrn)
 371         return 1
 372
 373
 374     def stop_slice(self, hrn):
 375         if self.api.interface in ['aggregate']:
 376             self.stop_slice_aggregate(hrn)
 377         elif self.api.interface in ['slicemgr']:
 378             self.stop_slice_smgr(hrn)
 379
 380     def stop_slice_aggregate(self, hrn):
 381         slicename = hrn_to_pl_slicename(hrn)
 382         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 383         if not slices:
 384             raise RecordNotFound(hrn)
 385         slice_id = slices[0]['slice_id']
 386         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 387         attribute_id = attributes[0]['slice_attribute_id']
 388         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "0")
 389         return 1
 390
 391     def stop_slice_smgr(self, hrn):
 392         credential = self.api.getCredential()
 393         aggregates = Aggregates(self.api)
 394         for aggregate in aggregates:
 395             aggregates[aggregate].stop_slice(credential, hrn)
 396