2 # Functions for interacting with the nodegroups table in the database
6 from types import StringTypes
8 from PLC.Faults import *
9 from PLC.Parameter import Parameter, Mixed
10 from PLC.Debug import profile
11 from PLC.Storage.AlchemyObject import AlchemyObj
12 from PLC.Nodes import Node, Nodes
16 Representation of a row in the nodegroups table. To use, optionally
17 instantiate with a dict of values. Update as you would a
18 dict. Commit to the database with sync().
21 tablename = 'nodegroups'
22 join_tables = ['conf_file_nodegroup']
24 'nodegroup_id': Parameter(int, "Node group identifier", primary_key),
25 'groupname': Parameter(str, "Node group name", max = 50),
26 'tag_type_id': Parameter (int, "Node tag type id"),
27 'value' : Parameter(str, "value that the nodegroup definition is based upon"),
28 'tagname' : Parameter(str, "Tag name that the nodegroup definition is based upon"),
29 'conf_file_ids': Parameter([int], "List of configuration files specific to this node group", joined=True),
30 'node_ids' : Parameter([int], "List of node_ids that belong to this nodegroup", joined=True),
35 def validate_name(self, name):
36 # Make sure name is not blank
38 raise PLCInvalidArgument, "Invalid node group name"
40 # Make sure node group does not alredy exist
41 conflicts = NodeGroups(self.api, name)
42 for nodegroup in conflicts:
43 if 'nodegroup_id' not in self or self['nodegroup_id'] != nodegroup['nodegroup_id']:
44 raise PLCInvalidArgument, "Node group name already in use"
48 def sync(self, commit=True, validate=True):
49 AlchemyObj.sync(self, commit, validate)
50 if 'nodegroup_id' not in self:
51 AlchemyObj.insert(self, dict(self))
53 AlchemyObj.update(self, {'nodegroup_id': self['nodegroup_id']}, dict(self))
55 def delete(self, commit=True):
56 assert 'nodegroup_id' in self
57 AlchemyObj.delete(self, dict(self))
59 class NodeGroups(list):
61 Representation of row(s) from the nodegroups table in the
65 def __init__(self, api, nodegroup_filter = None, columns = None):
67 if not nodegroup_filter is not None:
68 nodegroups = NodeGroup().select()
69 if isinstance(nodegroup_filter, (list, tuple, set)):
70 # Separate the list into integers and strings
71 ints = filter(lambda x: isinstance(x, (int, long)), nodegroup_filter)
72 strs = filter(lambda x: isinstance(x, StringTypes), nodegroup_filter)
73 nodegroups = NodeGroup().select(filter={'nodegroup_id': ints, 'groupname': strs})
74 elif isinstance(nodegroup_filter, dict):
75 nodegroups = NodeGroup().select(filter=nodegroup_filter)
76 elif isinstance(nodegroup_filter, (int, long)):
77 nodegroups = NodeGroup().select(filter={'nodegroup_id': nodegroup_filter})
78 elif isinstance(nodegroup_filter, StringTypes):
79 nodegroups = NodeGroup().select(filter={'groupname': nodegroup_filter})
81 raise PLCInvalidArgument, "Wrong node group filter %r"%nodegroup_filter
83 for nodegroup in nodegroups:
84 self.append(nodegroup)