4 from PLC.Faults import *
5 from PLC.Auth import Auth
6 from PLC.Method import Method
7 from PLC.Parameter import Parameter, Mixed
8 from PLC.Table import Row
10 from PLC.Slices import Slice, Slices
11 from PLC.Sites import Site, Sites
12 from PLC.TagTypes import TagTypes
13 from PLC.SliceTags import SliceTags
14 from PLC.Methods.AddSliceTag import AddSliceTag
15 from PLC.Methods.UpdateSliceTag import UpdateSliceTag
17 can_update = ['name', 'instantiation', 'url', 'description', 'max_nodes']
19 class AddSlice(Method):
21 Adds a new slice. Any fields specified in slice_fields are used,
22 otherwise defaults are used.
24 Valid slice names are lowercase and begin with the login_base
25 (slice prefix) of a valid site, followed by a single
26 underscore. Thereafter, only letters, numbers, or additional
27 underscores may be used.
29 PIs may only add slices associated with their own sites (i.e.,
30 slice prefixes must always be the login_base of one of their
33 Returns the new slice_id (> 0) if successful, faults otherwise.
36 roles = ['admin', 'pi']
38 accepted_fields = Row.accepted_fields(can_update, Slice.fields)
39 accepted_fields.update(Slice.tags)
46 returns = Parameter(int, 'New slice_id (> 0) if successful')
48 def call(self, auth, slice_fields):
50 [native,tags,rejected]=Row.split_fields(slice_fields,[Slice.fields,Slice.tags])
53 native = Row.check_fields (native, self.accepted_fields)
55 raise PLCInvalidArgument, "Cannot add Slice with column(s) %r"%rejected
57 # Authenticated function
58 assert self.caller is not None
61 # 2. Begins with login_base (letters or numbers).
62 # 3. Then single underscore after login_base.
63 # 4. Then letters, numbers, or underscores.
64 name = slice_fields['name']
65 good_name = r'^[a-z0-9]+_[a-zA-Z0-9_]+$'
67 not re.match(good_name, name):
68 raise PLCInvalidArgument, "Invalid slice name"
70 # Get associated site details
71 login_base = name.split("_")[0]
72 sites = Sites(self.api, [login_base])
74 raise PLCInvalidArgument, "Invalid slice prefix %s in %s"%(login_base,name)
77 if 'admin' not in self.caller['roles']:
78 if site['site_id'] not in self.caller['site_ids']:
79 raise PLCPermissionDenied, "Slice prefix %s must match one of your sites' login_base"%login_base
81 if len(site['slice_ids']) >= site['max_slices']:
82 raise PLCInvalidArgument, \
83 "Site %s has reached (%d) its maximum allowable slice count (%d)"%(site['name'],
84 len(site['slice_ids']),
86 if not site['enabled']:
87 raise PLCInvalidArgument, "Site %s is disabled and can cannot create slices" % (site['name'])
89 slice = Slice(self.api, native)
90 slice['creator_person_id'] = self.caller['person_id']
91 slice['site_id'] = site['site_id']
94 for (tagname,value) in tags.iteritems():
95 # the tagtype instance is assumed to exist, just check that
96 if not TagTypes(self.api,{'tagname':tagname}):
97 raise PLCInvalidArgument,"No such TagType %s"%tagname
98 slice_tags=SliceTags(self.api,{'tagname':tagname,'slice_id':slice['slice_id']})
100 AddSliceTag(self.api).__call__(auth,slice['slice_id'],tagname,value)
102 UpdateSliceTag(self.api).__call__(auth,slice_tags[0]['slice_tag_id'],value)
104 self.event_objects = {'Slice': [slice['slice_id']]}
105 self.message = "Slice %d created" % slice['slice_id']
107 return slice['slice_id']