2 # Functions for interacting with the nodegroups table in the database
4 # Mark Huang <mlhuang@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
10 from types import StringTypes
12 from PLC.Faults import *
13 from PLC.Parameter import Parameter, Mixed
14 from PLC.Filter import Filter
15 from PLC.Debug import profile
16 from PLC.Table import Row, Table
17 from PLC.Nodes import Node, Nodes
21 Representation of a row in the nodegroups table. To use, optionally
22 instantiate with a dict of values. Update as you would a
23 dict. Commit to the database with sync().
26 table_name = 'nodegroups'
27 primary_key = 'nodegroup_id'
28 join_tables = ['conf_file_nodegroup']
29 primary_field = 'nodegroup_id'
31 'nodegroup_id': Parameter(int, "Node group identifier"),
32 'groupname': Parameter(str, "Node group name", max = 50),
33 'tag_type_id': Parameter (int, "Node tag type id"),
34 'value' : Parameter(str, "value that the nodegroup definition is based upon"),
35 'tagname' : Parameter(str, "Tag name that the nodegroup definition is based upon"),
36 'conf_file_ids': Parameter([int], "List of configuration files specific to this node group"),
37 'node_ids' : Parameter([int], "List of node_ids that belong to this nodegroup"),
42 def validate_name(self, name):
43 # Make sure name is not blank
45 raise PLCInvalidArgument, "Invalid node group name"
47 # Make sure node group does not alredy exist
48 conflicts = NodeGroups(self.api, [name])
49 for nodegroup in conflicts:
50 if 'nodegroup_id' not in self or self['nodegroup_id'] != nodegroup['nodegroup_id']:
51 raise PLCInvalidArgument, "Node group name already in use"
55 def associate_conf_files(self, auth, field, value):
57 Add conf_files found in value list (AddConfFileToNodeGroup)
58 Delets conf_files not found in value list (DeleteConfFileFromNodeGroup)
61 assert 'conf_file_ids' in self
62 assert 'nodegroup_id' in self
63 assert isinstance(value, list)
65 conf_file_ids = self.separate_types(value)[0]
67 if self['conf_file_ids'] != conf_file_ids:
68 from PLC.Methods.AddConfFileToNodeGroup import AddConfFileToNodeGroup
69 from PLC.Methods.DeleteConfFileFromNodeGroup import DeleteConfFileFromNodeGroup
70 new_conf_files = set(conf_file_ids).difference(self['conf_file_ids'])
71 stale_conf_files = set(self['conf_file_ids']).difference(conf_file_ids)
73 for new_conf_file in new_conf_files:
74 AddConfFileToNodeGroup.__call__(AddConfFileToNodeGroup(self.api),
75 auth, new_conf_file, self['nodegroup_id'])
76 for stale_conf_file in stale_conf_files:
77 DeleteConfFileFromNodeGroup.__call__(DeleteConfFileFromNodeGroup(self.api),
78 auth, stale_conf_file, self['nodegroup_id'])
81 class NodeGroups(Table):
83 Representation of row(s) from the nodegroups table in the
87 def __init__(self, api, nodegroup_filter = None, columns = None):
88 Table.__init__(self, api, NodeGroup, columns)
90 sql = "SELECT %s FROM view_nodegroups WHERE True" % \
91 ", ".join(self.columns)
93 if nodegroup_filter is not None:
94 if isinstance(nodegroup_filter, (list, tuple, set)):
95 # Separate the list into integers and strings
96 ints = filter(lambda x: isinstance(x, (int, long)), nodegroup_filter)
97 strs = filter(lambda x: isinstance(x, StringTypes), nodegroup_filter)
98 nodegroup_filter = Filter(NodeGroup.fields, {'nodegroup_id': ints, 'groupname': strs})
99 sql += " AND (%s) %s" % nodegroup_filter.sql(api, "OR")
100 elif isinstance(nodegroup_filter, dict):
101 nodegroup_filter = Filter(NodeGroup.fields, nodegroup_filter)
102 sql += " AND (%s) %s" % nodegroup_filter.sql(api, "AND")