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