sfa/plc/slices.py

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