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