3 from PLC.Faults import *
4 from PLC.Method import Method
5 from PLC.Parameter import Parameter, Mixed
6 from PLC.Slices import Slice, Slices
7 from PLC.Auth import Auth
8 from PLC.Sites import Site, Sites
10 related_fields = Slice.related_fields.keys()
11 can_update = lambda (field, value): field in \
12 ['instantiation', 'url', 'description', 'max_nodes', 'expires'] + \
16 class UpdateSlice(Method):
18 Updates the parameters of an existing slice with the values in
21 Users may only update slices of which they are members. PIs may
22 update any of the slices at their sites, or any slices of which
23 they are members. Admins may update any slice.
25 Only PIs and admins may update max_nodes. Slices cannot be renewed
26 (by updating the expires parameter) more than 8 weeks into the
29 Returns 1 if successful, faults otherwise.
32 roles = ['admin', 'pi', 'user']
34 slice_fields = dict(filter(can_update, Slice.fields.items() + Slice.related_fields.items()))
38 Mixed(Slice.fields['slice_id'],
39 Slice.fields['name']),
43 returns = Parameter(int, '1 if successful')
45 def call(self, auth, slice_id_or_name, slice_fields):
46 slice_fields = dict(filter(can_update, slice_fields.items()))
48 slices = Slices(self.api, [slice_id_or_name])
50 raise PLCInvalidArgument, "No such slice"
53 if slice['peer_id'] is not None:
54 raise PLCInvalidArgument, "Not a local slice"
56 if 'admin' not in self.caller['roles']:
57 if self.caller['person_id'] in slice['person_ids']:
59 elif 'pi' not in self.caller['roles']:
60 raise PLCPermissionDenied, "Not a member of the specified slice"
61 elif slice['site_id'] not in self.caller['site_ids']:
62 raise PLCPermissionDenied, "Specified slice not associated with any of your sites"
65 if 'expires' in slice_fields and slice_fields['expires'] > slice['expires']:
66 sites = Sites(self.api, [slice['site_id']])
70 if site['max_slices'] < 0:
71 raise PLCInvalidArgument, "Slice creation and renewal have been disabled for the site"
73 # Maximum expiration date is 8 weeks from now
74 # XXX Make this configurable
75 max_expires = time.time() + (8 * 7 * 24 * 60 * 60)
77 if 'admin' not in self.caller['roles'] and slice_fields['expires'] > max_expires:
78 raise PLCInvalidArgument, "Cannot renew a slice beyond 8 weeks from now"
80 # XXX Make this a configurable policy
81 if slice['description'] is None or not slice['description'].strip():
82 if 'description' not in slice_fields or slice_fields['description'] is None or \
83 not slice_fields['description'].strip():
84 raise PLCInvalidArgument, "Cannot renew a slice with an empty description or URL"
86 if slice['url'] is None or not slice['url'].strip():
87 if 'url' not in slice_fields or slice_fields['url'] is None or \
88 not slice_fields['url'].strip():
89 raise PLCInvalidArgument, "Cannot renew a slice with an empty description or URL"
91 if 'max_nodes' in slice_fields and slice_fields['max_nodes'] != slice['max_nodes']:
92 if 'admin' not in self.caller['roles'] and \
93 'pi' not in self.caller['roles']:
94 raise PLCInvalidArgument, "Only admins and PIs may update max_nodes"
96 # Make requested associations
97 for field in related_fields:
98 if field in slice_fields:
99 slice.associate(auth, field, slice_fields[field])
100 slice_fields.pop(field)
102 slice.update(slice_fields)
105 self.event_objects = {'Slice': [slice['slice_id']]}