3 from PLC.Faults import *
4 from PLC.Method import Method
5 from PLC.Parameter import Parameter, Mixed
6 from PLC.Auth import Auth
8 from PLC.Timestamp import Timestamp, Duration
10 from PLC.Leases import Lease, Leases
11 from PLC.Slices import Slice, Slices
13 can_update = lambda field_value: field_value[0] in ['t_from', 't_until', 'duration']
16 class UpdateLeases(Method):
18 Updates the parameters of a (set of) existing lease(s) with the values in
19 lease_fields; specifically this applies to the timeslot definition.
20 As a convenience you may, in addition to the t_from and t_until fields,
21 you can also set the 'duration' field.
23 Users may only update leases attached to their slices.
24 PIs may update any of the leases for slices at their sites, or any
25 slices of which they are members. Admins may update any lease.
27 Returns a dict of successfully updated lease_ids and error messages.
30 roles = ['admin', 'pi', 'tech', 'user']
32 lease_fields = dict(list(filter(can_update, list(Lease.fields.items()))))
36 Mixed(Lease.fields['lease_id'],
37 [Lease.fields['lease_id']]),
43 " 'updated_ids' is the list ids updated,"
44 "'errors' is a list of error strings")
49 def call(self, auth, lease_ids, input_fields):
50 input_fields = dict(list(filter(can_update, list(input_fields.items()))))
52 if 'duration' in input_fields:
53 if 't_from' in input_fields and 't_until' in input_fields:
54 raise PLCInvalidArgument(
55 "Cannot set t_from AND t_until AND duration")
56 # specify 'duration':0 to keep duration unchanged
57 if input_fields['duration']:
58 input_fields['duration'] = Duration.validate(
59 input_fields['duration'])
61 # Get lease information
62 leases = Leases(self.api, lease_ids)
64 raise PLCInvalidArgument("No such leases {}".format(lease_ids))
66 # fetch related slices
67 slices = Slices(self.api,
68 [lease['slice_id'] for lease in leases],
69 ['slice_id', 'person_ids'])
70 # create hash on slice_id
71 slice_map = dict([(slice['slice_id'], slice) for slice in slices])
76 lease_ids = [lease['lease_id'] for lease in leases]
79 if 'admin' not in self.caller['roles']:
80 slice = slice_map[lease['slice_id']]
81 # check slices only once
82 if 'verified' not in slice:
83 if self.caller['person_id'] in slice['person_ids']:
85 elif 'pi' not in self.caller['roles']:
86 raise PLCPermissionDenied(
87 "Not a member of slice {}".format(slice['name']))
88 elif slice['site_id'] not in self.caller['site_ids']:
89 raise PLCPermissionDenied(
90 "Slice {} not associated with any of your sites"
91 .format(slice['name']))
92 slice['verified'] = True
95 # we've ruled out already the case where all 3 (from, to,
96 # duration) where specified
97 if 'duration' not in input_fields:
98 lease_fields = input_fields
100 # all arithmetics on longs..
101 duration = Duration.validate(input_fields['duration'])
102 # specify 'duration':0 to keep duration unchanged
104 duration = Timestamp.cast_long(
106 - Timestamp.cast_long(lease['t_from'])
107 if 't_from' in input_fields:
109 't_from': input_fields['t_from'],
110 't_until': Timestamp.cast_long(
111 input_fields['from']) + duration}
112 elif 't_until' in input_fields:
114 't_from': Timestamp.cast_long(
115 input_fields['t_until']) - duration,
116 't_until': input_fields['t_until']}
118 lease_fields = {'t_until': Timestamp.cast_long(
119 lease['t_from']) + duration}
120 if UpdateLeases.debug:
121 for k in ['t_from', 't_until']:
122 if k in lease_fields:
123 print(k, 'aka', Timestamp.sql_validate_utc(
126 lease.update(lease_fields)
128 updated_ids.append(lease['lease_id'])
129 except Exception as e:
131 "Could not update lease {} - check new time limits ? -- {}"
132 .format(lease['lease_id'], e))
135 self.event_objects = {'Lease': updated_ids}
136 self.message = 'lease {} updated: {}'\
137 .format(lease_ids, ", ".join(list(input_fields.keys())))
139 return {'updated_ids': updated_ids,