- import Sites

[plcapi.git] / PLC / NodeGroups.py

diff --git a/PLC/NodeGroups.py b/PLC/NodeGroups.py
index 35746a3..90bd5f9 100644 (file)
--- a/PLC/NodeGroups.py
+++ b/PLC/NodeGroups.py
@@ -4,13 +4,14 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id: NodeGroups.py,v 1.11 2006/10/03 19:25:30 mlhuang Exp $
+# $Id: NodeGroups.py,v 1.18 2006/11/09 03:07:42 mlhuang Exp $
 #
 
 from types import StringTypes
 
 from PLC.Faults import *
 from PLC.Parameter import Parameter
+from PLC.Filter import Filter
 from PLC.Debug import profile
 from PLC.Table import Row, Table
 from PLC.Nodes import Node, Nodes
@@ -24,23 +25,18 @@ class NodeGroup(Row):
 
     table_name = 'nodegroups'
     primary_key = 'nodegroup_id'
+    join_tables = ['nodegroup_node', 'conf_file_nodegroup']
     fields = {
         'nodegroup_id': Parameter(int, "Node group identifier"),
         'name': Parameter(str, "Node group name", max = 50),
-        'description': Parameter(str, "Node group description", max = 200),
+        'description': Parameter(str, "Node group description", max = 200, nullok = True),
         'node_ids': Parameter([int], "List of nodes in this node group"),
+        'conf_file_ids': Parameter([int], "List of configuration files specific to this node group"),
         }
 
-    def __init__(self, api, fields = {}):
-        Row.__init__(self, fields)
-        self.api = api
-
     def validate_name(self, name):
-       # Remove leading and trailing spaces
-       name = name.strip()
-
-       # Make sure name is not blank after we removed the spaces
-        if not len(name) > 0:
+       # Make sure name is not blank
+        if not len(name):
                 raise PLCInvalidArgument, "Invalid node group name"
        
        # Make sure node group does not alredy exist
@@ -102,53 +98,27 @@ class NodeGroup(Row):
             self['node_ids'].remove(node_id)
             node['nodegroup_ids'].remove(nodegroup_id)
 
-    def delete(self, commit = True):
-        """
-        Delete existing nodegroup from the database.
-        """
-
-        assert 'nodegroup_id' in self
-
-        # Clean up miscellaneous join tables
-        for table in ['nodegroup_node', 'nodegroups']:
-            self.api.db.do("DELETE FROM %s" \
-                           " WHERE nodegroup_id = %d" % \
-                           (table, self['nodegroup_id']), self)
-
-        if commit:
-            self.api.db.commit()
-
 class NodeGroups(Table):
     """
     Representation of row(s) from the nodegroups table in the
     database.
     """
 
-    def __init__(self, api, nodegroup_id_or_name_list = None):
-       self.api = api
-
-        sql = "SELECT %s FROM view_nodegroups" % \
-              ", ".join(NodeGroup.fields)
-
-        if nodegroup_id_or_name_list:
-            # Separate the list into integers and strings
-            nodegroup_ids = filter(lambda nodegroup_id: isinstance(nodegroup_id, (int, long)),
-                                   nodegroup_id_or_name_list)
-            names = filter(lambda name: isinstance(name, StringTypes),
-                           nodegroup_id_or_name_list)
-            sql += " WHERE (False"
-            if nodegroup_ids:
-                sql += " OR nodegroup_id IN (%s)" % ", ".join(map(str, nodegroup_ids))
-            if names:
-                sql += " OR name IN (%s)" % ", ".join(api.db.quote(names))
-            sql += ")"
-
-        rows = self.api.db.selectall(sql)
-
-        for row in rows:
-            self[row['nodegroup_id']] = nodegroup = NodeGroup(api, row)
-            for aggregate in ['node_ids']:
-                if not nodegroup.has_key(aggregate) or nodegroup[aggregate] is None:
-                    nodegroup[aggregate] = []
-                else:
-                    nodegroup[aggregate] = map(int, nodegroup[aggregate].split(','))
+    def __init__(self, api, nodegroup_filter = None, columns = None):
+        Table.__init__(self, api, NodeGroup, columns)
+
+        sql = "SELECT %s FROM view_nodegroups WHERE True" % \
+              ", ".join(self.columns)
+
+        if nodegroup_filter is not None:
+            if isinstance(nodegroup_filter, (list, tuple, set)):
+                # Separate the list into integers and strings
+                ints = filter(lambda x: isinstance(x, (int, long)), nodegroup_filter)
+                strs = filter(lambda x: isinstance(x, StringTypes), nodegroup_filter)
+                nodegroup_filter = Filter(NodeGroup.fields, {'nodegroup_id': ints, 'name': strs})
+                sql += " AND (%s)" % nodegroup_filter.sql(api, "OR")
+            elif isinstance(nodegroup_filter, dict):
+                nodegroup_filter = Filter(NodeGroup.fields, nodegroup_filter)
+                sql += " AND (%s)" % nodegroup_filter.sql(api, "AND")
+
+        self.selectall(sql)