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         path = self.api.config.basepath
  20         filename = ".".join([self.api.interface, self.api.hrn, "slices"])
  21         filepath = path + os.sep + filename
  22         self.slices_file = filepath
  23         SimpleStorage.__init__(self, self.slices_file)
  24         self.policy = Policy(self.api)
  25         self.load()
  26
  27
  28     def refresh(self):
  29         """
  30         Update the cached list of slices
  31         """
  32         # Reload components list
  33         now = datetime.datetime.now()
  34         if not self.has_key('threshold') or not self.has_key('timestamp') or \
  35            now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))):
  36             if self.api.interface in ['aggregate']:
  37                 self.refresh_slices_aggregate()
  38             elif self.api.interface in ['slicemgr']:
  39                 self.refresh_slices_smgr()
  40
  41     def refresh_slices_aggregate(self):
  42         slices = self.api.plshell.GetSlices(self.api.plauth, {}, ['name'])
  43         slice_hrns = [slicename_to_hrn(self.api.hrn, slice['name']) for slice in slices]
  44
  45          # update timestamp and threshold
  46         timestamp = datetime.datetime.now()
  47         hr_timestamp = timestamp.strftime(self.api.time_format)
  48         delta = datetime.timedelta(hours=self.ttl)
  49         threshold = timestamp + delta
  50         hr_threshold = threshold.strftime(self.api.time_format)
  51
  52         slice_details = {'hrn': slice_hrns,
  53                          'timestamp': hr_timestamp,
  54                          'threshold': hr_threshold
  55                         }
  56         self.update(slice_details)
  57         self.write()
  58
  59
  60     def refresh_slices_smgr(self):
  61         slice_hrns = []
  62         aggregates = Aggregates(self.api)
  63         credential = self.api.getCredential()
  64         for aggregate in aggregates:
  65             try:
  66                 slices = aggregates[aggregate].get_slices(credential)
  67                 slice_hrns.extend(slices)
  68             except:
  69                 print >> log, "Error calling slices at aggregate %(aggregate)s" % locals()
  70          # update timestamp and threshold
  71         timestamp = datetime.datetime.now()
  72         hr_timestamp = timestamp.strftime(self.api.time_format)
  73         delta = datetime.timedelta(hours=self.ttl)
  74         threshold = timestamp + delta
  75         hr_threshold = threshold.strftime(self.api.time_format)
  76
  77         slice_details = {'hrn': slice_hrns,
  78                          'timestamp': hr_timestamp,
  79                          'threshold': hr_threshold
  80                         }
  81         self.update(slice_details)
  82         self.write()
  83
  84
  85     def delete_slice(self, hrn):
  86         if self.api.interface in ['aggregate']:
  87             self.delete_slice_aggregate(hrn)
  88         elif self.api.interface in ['slicemgr']:
  89             self.delete_slice_smgr(hrn)
  90
  91     def delete_slice_aggregate(self, hrn):
  92         slicename = hrn_to_pl_slicename(hrn)
  93         slices = self.api.plshell.GetSlices(self.api.plauth, [slicename])
  94         if not slices:
  95             return 1
  96         slice = slices[0]
  97
  98         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, slice['node_ids'])
  99         return 1
 100
 101     def delete_slice_smgr(self, hrn):
 102         credential = self.api.getCredential()
 103         aggregates = Aggregates(self.api)
 104         for aggregate in aggregates:
 105             aggregates[aggregate].delete_slice(credential, hrn)
 106
 107     def create_slice(self, hrn, rspec):
 108         # check our slice policy before we procede
 109         whitelist = self.policy['slice_whitelist']
 110         blacklist = self.policy['slice_blacklist']
 111
 112         if whitelist and hrn not in whitelist or \
 113            blacklist and hrn in blacklist:
 114             policy_file = self.policy.policy_file
 115             print >> log, "Slice %(hrn)s not allowed by policy %(policy_file)s" % locals()
 116             return 1
 117         if self.api.interface in ['aggregate']:
 118             self.create_slice_aggregate(hrn, rspec)
 119         elif self.api.interface in ['slicemgr']:
 120             self.create_slice_smgr(hrn, rspec)
 121
 122     def create_slice_aggregate(self, hrn, rspec):
 123         spec = Rspec(rspec)
 124         # Get the slice record from geni
 125         slice = {}
 126         registries = Registries(self.api)
 127         registry = registries[self.api.hrn]
 128         credential = self.api.getCredential()
 129         records = registry.resolve(credential, hrn)
 130         for record in records:
 131             if record.get_type() in ['slice']:
 132                 slice_info = record.as_dict()
 133                 slice = slice_info['pl_info']
 134         if not slice:
 135             raise RecordNotFound(slice_hrn)
 136
 137         # Make sure slice exists at plc, if it doesnt add it
 138         slicename = hrn_to_pl_slicename(hrn)
 139         slices = self.api.plshell.GetSlices(self.api.plauth, [slicename], ['node_ids'])
 140         if not slices:
 141             parts = slicename.split("_")
 142             login_base = parts[0]
 143             # if site doesnt exist add it
 144             sites = self.api.plshell.GetSites(self.api.plauth, [login_base])
 145             if not sites:
 146                 authority = get_authority(hrn)
 147                 site_records = registry.resolve(credential, authority)
 148                 site_record = {}
 149                 if not site_records:
 150                     raise RecordNotFound(authority)
 151                 site_record = site_records[0]
 152                 site_info = site_record.as_dict()
 153                 site = site_info['pl_info']
 154
 155                  # add the site
 156                 site.pop('site_id')
 157                 site_id = self.api.plshell.AddSite(self.api.plauth, site)
 158             else:
 159                 site = sites[0]
 160
 161             self.api.plshell.AddSlice(self.api.plauth, slice)
 162
 163         # get the list of valid slice users from the registry and make
 164         # they are added to the slice
 165         geni_info = slice_info['geni_info']
 166         researchers = geni_info['researcher']
 167         for researcher in researchers:
 168             person_record = {}
 169             person_records = registry.resolve(credential, researcher)
 170             for record in person_records:
 171                 if record.get_type() in ['user']:
 172                     person_record = record
 173             if not person_record:
 174                 pass
 175             person_dict = person_record.as_dict()['pl_info']
 176             persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids'])
 177
 178             # Create the person record
 179             if not persons:
 180                 self.api.plshell.AddPerson(self.api.plauth, person_dict)
 181                 key_ids = []
 182             else:
 183                 key_ids = persons[0]['key_ids']
 184
 185             self.api.plshell.AddPersonToSlice(self.api.plauth, person_dict['email'], slicename)
 186
 187             # Get this users local keys
 188             keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key'])
 189             keys = [key['key'] for key in keylist]
 190
 191             # add keys that arent already there
 192             for personkey in person_dict['keys']:
 193                 if personkey not in keys:
 194                     key = {'key_type': 'ssh', 'key': personkey}
 195                     self.api.plshell.AddPersonKey(self.api.plauth, person_dict['email'], key)
 196
 197         # find out where this slice is currently running
 198         nodelist = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname'])
 199         hostnames = [node['hostname'] for node in nodelist]
 200
 201         # get netspec details
 202         nodespecs = spec.getDictsByTagName('NodeSpec')
 203         nodes = []
 204         for nodespec in nodespecs:
 205             if isinstance(nodespec['name'], list):
 206                 nodes.extend(nodespec['name'])
 207             elif isinstance(nodespec['name'], StringTypes):
 208                 nodes.append(nodespec['name'])
 209
 210         # remove nodes not in rspec
 211         deleted_nodes = list(set(hostnames).difference(nodes))
 212         # add nodes from rspec
 213         added_nodes = list(set(nodes).difference(hostnames))
 214
 215         self.api.plshell.AddSliceToNodes(self.api.plauth, slicename, added_nodes)
 216         self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, deleted_nodes)
 217
 218         return 1
 219
 220     def create_slice_smgr(self, hrn, rspec):
 221         spec = Rspec()
 222         tempspec = Rspec()
 223         spec.parseString(rspec)
 224         slicename = hrn_to_pl_slicename(hrn)
 225         specDict = spec.toDict()
 226         if specDict.has_key('Rspec'): specDict = specDict['Rspec']
 227         if specDict.has_key('start_time'): start_time = specDict['start_time']
 228         else: start_time = 0
 229         if specDict.has_key('end_time'): end_time = specDict['end_time']
 230         else: end_time = 0
 231
 232         rspecs = {}
 233         aggregates = Aggregates(self.api)
 234         credential = self.api.getCredential()
 235         # only attempt to extract information about the aggregates we know about
 236         for aggregate in aggregates:
 237             netspec = spec.getDictByTagNameValue('NetSpec', aggregate)
 238             if netspec:
 239                 # creat a plc dict
 240                 resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec}
 241                 resourceDict = {'Rspec': resources}
 242                 tempspec.parseDict(resourceDict)
 243                 rspecs[aggregate] = tempspec.toxml()
 244
 245         # notify the aggregates
 246         for aggregate in rspecs.keys():
 247             try:
 248                 aggregates[aggregate].create_slice(credential, hrn, rspecs[aggregate])
 249             except:
 250                 print >> log, "Error creating slice %(hrn)% at aggregate %(aggregate)%" % locals()
 251
 252         return 1
 253
 254
 255     def start_slice(self, hrn):
 256         if self.api.interface in ['aggregate']:
 257             self.start_slice_aggregate()
 258         elif self.api.interface in ['slicemgr']:
 259             self.start_slice_smgr()
 260
 261     def start_slice_aggregate(self, hrn):
 262         slicename = hrn_to_pl_slicename(hrn)
 263         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 264         if not slices:
 265             raise RecordNotFound(hrn)
 266         slice_id = slices[0]
 267         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 268         attribute_id = attreibutes[0]['slice_attribute_id']
 269         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "1" )
 270         return 1
 271
 272     def start_slice_smgr(self, hrn):
 273         credential = self.api.getCredential()
 274         aggregates = Aggregates()
 275         for aggregate in aggregates:
 276             aggreegates[aggregate].start_slice(credential, hrn)
 277         return 1
 278
 279
 280     def stop_slice(self, hrn):
 281         if self.api.interface in ['aggregate']:
 282             self.stop_slice_aggregate()
 283         elif self.api.interface in ['slicemgr']:
 284             self.stop_slice_smgr()
 285
 286     def stop_slice_aggregate(self, hrn):
 287         slicename = hrn_to_pl_slicename(hrn)
 288         slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id'])
 289         if not slices:
 290             raise RecordNotFound(hrn)
 291         slice_id = slices[0]
 292         attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
 293         attribute_id = attributes[0]['slice_attribute_id']
 294         self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "0")
 295         return 1
 296
 297     def stop_slice_smgr(self, hrn):
 298         credential = self.api.getCredential()
 299         aggregates = Aggregates()
 300         for aggregate in aggregates:
 301             aggregate[aggregate].stop_slice(credential, hrn)
 302