2 # Thierry Parmentelat - INRIA
4 from PLC.Faults import *
5 from PLC.Method import Method
6 from PLC.Parameter import Parameter, Mixed
7 from PLC.Auth import Auth
9 from PLC.TagTypes import TagType, TagTypes
10 from PLC.Slices import Slice, Slices
11 from PLC.Nodes import Node, Nodes
12 from PLC.SliceTags import SliceTag, SliceTags
13 from PLC.NodeGroups import NodeGroup, NodeGroups
14 from PLC.InitScripts import InitScript, InitScripts
16 class AddSliceTag(Method):
18 Sets the specified tag of the slice to the specified value.
19 If nodegroup is specified, this applies to all slivers of that group.
20 If node is specified, this only applies to a sliver.
22 Admins have full access, including on nodegroups.
24 Non-admins need to have at least one of the roles
25 attached to the tagtype. In addition:
26 (*) Users may only set tags of slices or slivers of which they are members.
27 (*) PIs may only set tags of slices in their site
28 (*) techs cannot use this method
30 Returns the new slice_tag_id (> 0) if successful, faults
34 roles = ['admin', 'pi', 'user', 'node']
38 Mixed(Slice.fields['slice_id'],
39 Slice.fields['name']),
40 Mixed(SliceTag.fields['tag_type_id'],
41 SliceTag.fields['tagname']),
42 Mixed(SliceTag.fields['value'],
43 InitScript.fields['name']),
44 Mixed(Node.fields['node_id'],
45 Node.fields['hostname'],
47 Mixed(NodeGroup.fields['nodegroup_id'],
48 NodeGroup.fields['groupname'])
51 returns = Parameter(int, 'New slice_tag_id (> 0) if successful')
53 def call(self, auth, slice_id_or_name, tag_type_id_or_name, value, node_id_or_hostname = None, nodegroup_id_or_name = None):
54 slices = Slices(self.api, [slice_id_or_name])
56 raise PLCInvalidArgument, "No such slice %r"%slice_id_or_name
59 tag_types = TagTypes(self.api, [tag_type_id_or_name])
61 raise PLCInvalidArgument, "No such tag type %r"%tag_type_id_or_name
62 tag_type = tag_types[0]
64 # check authorizations
65 slice.caller_may_write_tag (self.api,self.caller,tag_type,node_id_or_hostname,nodegroup_id_or_name)
67 # if initscript is specified, validate value
68 if tag_type['tagname'] in ['initscript']:
69 initscripts = InitScripts(self.api, {'enabled': True, 'name': value})
71 raise PLCInvalidArgument, "No such plc initscript %r"%value
73 slice_tag = SliceTag(self.api)
74 slice_tag['slice_id'] = slice['slice_id']
75 slice_tag['tag_type_id'] = tag_type['tag_type_id']
76 slice_tag['value'] = unicode(value)
78 # Sliver attribute if node is specified
79 if node_id_or_hostname is not None or isinstance(self.caller, Node):
81 if isinstance(self.caller, Node):
83 node_id = node['node_id']
85 if node_id_or_hostname is not None:
86 nodes = Nodes(self.api, [node_id_or_hostname])
88 raise PLCInvalidArgument, "No such node"
90 if node_id <> None and node_id <> node['node_id']:
91 raise PLCPermissionDenied, "Not allowed to set another node's sliver attribute"
93 node_id = node['node_id']
95 system_slice_tags = SliceTags(self.api, {'tagname': 'system', 'value': '1'}).dict('slice_id')
96 system_slice_ids = system_slice_tags.keys()
97 if slice['slice_id'] not in system_slice_ids and node_id not in slice['node_ids']:
98 raise PLCInvalidArgument, "AddSliceTag: slice %s not on specified node %s nor is it a system slice (%r)"%\
99 (slice['name'],node['hostname'],system_slice_ids)
100 slice_tag['node_id'] = node['node_id']
102 # Sliver attribute shared accross nodes if nodegroup is sepcified
103 if nodegroup_id_or_name is not None:
104 if isinstance(self.caller, Node):
105 raise PLCPermissionDenied, "Not allowed to set nodegroup slice attributes"
107 nodegroups = NodeGroups(self.api, [nodegroup_id_or_name])
109 raise PLCInvalidArgument, "No such nodegroup %r"%nodegroup_id_or_name
110 nodegroup = nodegroups[0]
112 slice_tag['nodegroup_id'] = nodegroup['nodegroup_id']
114 # Check if slice attribute already exists
115 slice_tags_check = SliceTags(self.api, {'slice_id': slice['slice_id'],
116 'tagname': tag_type['tagname'],
118 for slice_tag_check in slice_tags_check:
119 # do not compare between slice tag and sliver tag
120 if 'node_id' not in slice_tag and slice_tag_check['node_id'] is not None:
122 # do not compare between sliver tag and slice tag
123 if 'node_id' in slice_tag and slice_tag['node_id'] is not None and slice_tag_check['node_id'] is None:
125 if 'node_id' in slice_tag and slice_tag['node_id'] == slice_tag_check['node_id']:
126 raise PLCInvalidArgument, "Sliver attribute already exists"
127 if 'nodegroup_id' in slice_tag and slice_tag['nodegroup_id'] == slice_tag_check['nodegroup_id']:
128 raise PLCInvalidArgument, "Slice attribute already exists for this nodegroup"
129 if node_id_or_hostname is None and nodegroup_id_or_name is None:
130 raise PLCInvalidArgument, "Slice attribute already exists"
133 self.event_objects = {'SliceTag': [slice_tag['slice_tag_id']]}
135 return slice_tag['slice_tag_id']