geni/util/slices.py

   1 import datetime
   2 import time
   3 from geni.util.misc import *
   4 from geni.util.rspec import *
   5 from geni.util.specdict import *
   6 from geni.util.excep import *
   7 from geni.util.storage import *
   8 from geni.util.policy import Policy
   9 from geni.util.debug import log
  10 from geni.aggregate import Aggregates
  11 from geni.registry import Registries
  12
  13 class Slices(SimpleStorage):
  14
  15     def __init__(self, api, ttl = .5):
  16         self.api = api
  17         self.ttl = ttl
  18         self.threshold = None
  19         self.slices_file = os.sep.join([self.api.server_basedir, self.api.interface +'.'+ self.api.hrn + '.slices'])
  20         SimpleStorage.__init__(self, self.slices_file)
  21         self.policy = Policy(self.api)
  22         self.load()
  23
  24
  25     def refresh(self):
  26         """
  27         Update the cached list of slices
  28         """
  29         # Reload components list
  30         now = datetime.datetime.now()
  31         if not self.has_key('threshold') or not self.has_key('timestamp') or \
  32            now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))):
  33             if self.api.interface in ['aggregate']:
  34                 self.refresh_slices_aggregate()
  35             elif self.api.interface in ['slicemgr']:
  36                 self.refresh_slices_smgr()
  37
  38     def refresh_slices_aggregate(self):
  39         slices = self.api.plshell.GetSlices(self.api.plauth, {}, ['name'])
  40         slice_hrns = [slicename_to_hrn(self.api.hrn, slice['name']) for slice in slices]
  41
  42          # update timestamp and threshold
  43         timestamp = datetime.datetime.now()
  44         hr_timestamp = timestamp.strftime(self.api.time_format)
  45         delta = datetime.timedelta(hours=self.ttl)
  46         threshold = timestamp + delta
  47         hr_threshold = threshold.strftime(self.api.time_format)
  48
  49         slice_details = {'hrn': slice_hrns,
  50                          'timestamp': hr_timestamp,
  51                          'threshold': hr_threshold
  52                         }
  53         self.update(slice_details)
  54         self.write()
  55
  56
  57     def refresh_slices_smgr(self):
  58         slice_hrns = []
  59         aggregates = Aggregates(self.api)
  60         credential = self.api.getCredential()
  61         for aggregate in aggregates:
  62             try:
  63                 slices = aggregates[aggregate].slices(credential)
  64                 slice_hrns.extend(slices)
  65             except:
  66                 print >> log, "Error calling slices at aggregate %(aggregate)s" % locals()
  67          # update timestamp and threshold
  68         timestamp = datetime.datetime.now()
  69         hr_timestamp = timestamp.strftime(self.api.time_format)
  70         delta = datetime.timedelta(hours=self.ttl)
  71         threshold = timestamp + delta
  72         hr_threshold = threshold.strftime(self.api.time_format)
  73
  74         slice_details = {'hrn': slice_hrns,
  75                          'timestamp': hr_timestamp,
  76                          'threshold': hr_threshold
  77                         }
  78         self.update(slice_details)
  79         self.write()
  80
  81
  82     def delete_slice(self, hrn):
  83         if self.api.interface in ['aggregate']:
  84             self.delete_slice_aggregate(hrn)
  85         elif self.api.interface in ['slicemgr']:
  86             self.delete_slice_smgr(hrn)
  87
  88     def delete_slice_aggregate(self, hrn):
  89         slicename = hrn_to_pl_slicename(hrn)
  90         slices = self.api.plshell.GetSlices(self.api.plauth, [slicename])
  91         if not slices:
  92             return 1
  93         slice = slices[0]
  94
  95         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, slice['node_ids'])
  96         return 1
  97
  98     def delete_slice_smgr(self, hrn):
  99         credential = self.api.getCredential()
 100         aggregates = Aggregates(self.api)
 101         for aggregate in aggregates:
 102             aggregates[aggregate].delete_slice(credential, hrn)
 103
 104     def create_slice(self, hrn, rspec):
 105         # check our slice policy before we procede
 106         whitelist = self.policy['slice_whitelist']
 107         blacklist = self.policy['slice_blacklist']
 108
 109         if whitelist and hrn not in whitelist or \
 110            blacklist and hrn in blacklist:
 111             policy_file = self.policy.policy_file
 112             print >> log, "Slice %(hrn)s not allowed by policy %(policy_file)s" % locals()
 113             return 1
 114         if self.api.interface in ['aggregate']:
 115             self.create_slice_aggregate(hrn, rspec)
 116         elif self.api.interface in ['slicemgr']:
 117             self.create_slice_smgr(hrn, rspec)
 118
 119     def create_slice_aggregate(self, hrn, rspec):
 120         spec = Rspec(rspec)
 121         # Get the slice record from geni
 122         slice = {}
 123         registries = Registries(self.api)
 124         registry = registries[self.api.hrn]
 125         credential = self.api.getCredential()
 126         records = registry.resolve(credential, hrn)
 127         for record in records:
 128             if record.get_type() in ['slice']:
 129                 slice_info = record.as_dict()
 130                 slice = slice_info['pl_info']
 131         if not slice:
 132             raise RecordNotFound(slice_hrn)
 133
 134         # Make sure slice exists at plc, if it doesnt add it
 135         slicename = hrn_to_pl_slicename(hrn)
 136         slices = self.api.plshell.GetSlices(self.api.plauth, [slicename], ['node_ids'])
 137         if not slices:
 138             parts = slicename.split("_")
 139             login_base = parts[0]
 140             # if site doesnt exist add it
 141             sites = self.api.plshell.GetSites(self.api.plauth, [login_base])
 142             if not sites:
 143                 authority = get_authority(hrn)
 144                 site_records = registry.resolve(credential, authority)
 145                 site_record = {}
 146                 if not site_records:
 147                     raise RecordNotFound(authority)
 148                 site_record = site_records[0]
 149                 site_info = site_record.as_dict()
 150                 site = site_info['pl_info']
 151
 152                  # add the site
 153                 site.pop('site_id')
 154                 site_id = self.api.plshell.AddSite(self.api.plauth, site)
 155             else:
 156                 site = sites[0]
 157
 158             self.api.plshell.AddSlice(self.api.plauth, slice)
 159
 160         # get the list of valid slice users from the registry and make
 161         # they are added to the slice
 162         geni_info = slice_info['geni_info']
 163         researchers = geni_info['researcher']
 164         for researcher in researchers:
 165             person_record = {}
 166             person_records = registry.resolve(credential, researcher)
 167             for record in person_records:
 168                 if record.get_type() in ['user']:
 169                     person_record = record
 170             if not person_record:
 171                 pass
 172             person_dict = person_record.as_dict()['pl_info']
 173             persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids'])
 174
 175             # Create the person record
 176             if not persons:
 177                 self.api.plshell.AddPerson(self.api.plauth, person_dict)
 178                 key_ids = []
 179             else:
 180                 key_ids = persons[0]['key_ids']
 181
 182             self.api.plshell.AddPersonToSlice(self.api.plauth, person_dict['email'], slicename)
 183
 184             # Get this users local keys
 185             keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key'])
 186             keys = [key['key'] for key in keylist]
 187
 188             # add keys that arent already there
 189             for personkey in person_dict['keys']:
 190                 if personkey not in keys:
 191                     key = {'key_type': 'ssh', 'key': personkey}
 192                     self.api.plshell.AddPersonKey(self.api.plauth, person_dict['email'], key)
 193
 194         # find out where this slice is currently running
 195         nodelist = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname'])
 196         hostnames = [node['hostname'] for node in nodelist]
 197
 198         # get netspec details
 199         nodespecs = spec.getDictsByTagName('NodeSpec')
 200         nodes = []
 201         for nodespec in nodespecs:
 202             if isinstance(nodespec['name'], list):
 203                 nodes.extend(nodespec['name'])
 204             elif isinstance(nodespec['name'], StringTypes):
 205                 nodes.append(nodespec['name'])
 206
 207         # remove nodes not in rspec
 208         deleted_nodes = list(set(hostnames).difference(nodes))
 209         # add nodes from rspec
 210         added_nodes = list(set(nodes).difference(hostnames))
 211
 212         self.api.plshell.AddSliceToNodes(self.api.plauth, slicename, added_nodes)
 213         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, deleted_nodes)
 214
 215         return 1
 216
 217     def create_slice_smgr(self, hrn, rspec):
 218         spec = Rspec()
 219         tempspec = Rspec()
 220         spec.parseString(rspec)
 221         slicename = hrn_to_pl_slicename(hrn)
 222         specDict = spec.toDict()
 223         if specDict.has_key('Rspec'): specDict = specDict['Rspec']
 224         if specDict.has_key('start_time'): start_time = specDict['start_time']
 225         else: start_time = 0
 226         if specDict.has_key('end_time'): end_time = specDict['end_time']
 227         else: end_time = 0
 228
 229         rspecs = {}
 230         aggregates = Aggregates(self.api)
 231         credential = self.api.getCredential()
 232         # only attempt to extract information about the aggregates we know about
 233         for aggregate in aggregates:
 234             netspec = spec.getDictByTagNameValue('NetSpec', aggregate)
 235             if netspec:
 236                 # creat a plc dict
 237                 resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec}
 238                 resourceDict = {'Rspec': resources}
 239                 tempspec.parseDict(resourceDict)
 240                 rspecs[aggregate] = tempspec.toxml()
 241
 242         # notify the aggregates
 243         for aggregate in rspecs.keys():
 244             try:
 245                 aggregates[aggregate].create_slice(credential, hrn, rspecs[aggregate])
 246             except:
 247                 print >> log, "Error creating slice %(hrn)% at aggregate %(aggregate)%" % locals()
 248
 249         return 1
 250
 251
 252     def start_slice(self, hrn):
 253         if self.api.interface in ['aggregate']:
 254             self.start_slice_aggregate()
 255         elif self.api.interface in ['slicemgr']:
 256             self.start_slice_smgr()
 257
 258     def start_slice_aggregate(self, hrn):
 259         slicename = hrn_to_pl_slicename(hrn)
 260         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 261         if not slices:
 262             raise RecordNotFound(hrn)
 263         slice_id = slices[0]
 264         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 265         attribute_id = attreibutes[0]['slice_attribute_id']
 266         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "1" )
 267         return 1
 268
 269     def start_slice_smgr(self, hrn):
 270         credential = self.api.getCredential()
 271         aggregates = Aggregates()
 272         for aggregate in aggregates:
 273             aggreegates[aggregate].start_slice(credential, hrn)
 274         return 1
 275
 276
 277     def stop_slice(self, hrn):
 278         if self.api.interface in ['aggregate']:
 279             self.stop_slice_aggregate()
 280         elif self.api.interface in ['slicemgr']:
 281             self.stop_slice_smgr()
 282
 283     def stop_slice_aggregate(self, hrn):
 284         slicename = hrn_to_pl_slicename(hrn)
 285         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 286         if not slices:
 287             raise RecordNotFound(hrn)
 288         slice_id = slices[0]
 289         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 290         attribute_id = attributes[0]['slice_attribute_id']
 291         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "0")
 292         return 1
 293
 294     def stop_slice_smgr(self, hrn):
 295         credential = self.api.getCredential()
 296         aggregates = Aggregates()
 297         for aggregate in aggregates:
 298             aggregate[aggregate].stop_slice(credential, hrn)
 299