#
# Functions for interacting with the nodegroups table in the database
#
-# 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 $
#
from types import StringTypes
from PLC.Faults import *
-from PLC.Parameter import Parameter
+from PLC.Parameter import Parameter, Mixed
from PLC.Debug import profile
-from PLC.Table import Row, Table
-from PLC.Nodes import Node, Nodes
+from PLC.Storage.AlchemyObject import AlchemyObj
-class NodeGroup(Row):
+class NodeGroup(AlchemyObj):
"""
Representation of a row in the nodegroups table. To use, optionally
instantiate with a dict of values. Update as you would a
dict. Commit to the database with sync().
"""
- table_name = 'nodegroups'
- primary_key = 'nodegroup_id'
+ tablename = 'nodegroups'
+ join_tables = ['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),
- 'node_ids': Parameter([int], "List of nodes in this node group"),
+ 'nodegroup_id': Parameter(int, "Node group identifier", primary_key=True),
+ 'groupname': Parameter(str, "Node group name", max = 50),
+ 'tag_type_id': Parameter (int, "Node tag type id"),
+ 'value' : Parameter(str, "value that the nodegroup definition is based upon"),
+ 'tagname' : Parameter(str, "Tag name that the nodegroup definition is based upon"),
+ 'conf_file_ids': Parameter([int], "List of configuration files specific to this node group", joined=True),
+ 'node_ids' : Parameter([int], "List of node_ids that belong to this nodegroup", joined=True),
}
- 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:
- raise PLCInvalidArgument, "Invalid node group name"
-
- # Make sure node group does not alredy exist
- conflicts = NodeGroups(self.api, [name])
- for nodegroup_id in conflicts:
- if 'nodegroup_id' not in self or self['nodegroup_id'] != nodegroup_id:
- raise PLCInvalidArgument, "Node group name already in use"
-
- return name
-
- def add_node(self, node, commit = True):
- """
- Add node to existing nodegroup.
- """
-
- assert 'nodegroup_id' in self
- assert isinstance(node, Node)
- assert 'node_id' in node
-
- node_id = node['node_id']
- nodegroup_id = self['nodegroup_id']
-
- if node_id not in self['node_ids']:
- assert nodegroup_id not in node['nodegroup_ids']
-
- self.api.db.do("INSERT INTO nodegroup_node (nodegroup_id, node_id)" \
- " VALUES(%(nodegroup_id)d, %(node_id)d)",
- locals())
-
- if commit:
- self.api.db.commit()
-
- self['node_ids'].append(node_id)
- node['nodegroup_ids'].append(nodegroup_id)
-
- def remove_node(self, node, commit = True):
- """
- Remove node from existing nodegroup.
- """
-
+ # Make sure name is not blank
+ if not len(name):
+ raise PLCInvalidArgument, "Invalid node group name"
+
+ # Make sure node group does not alredy exist
+ conflicts = NodeGroups(self.api, name)
+ for nodegroup in conflicts:
+ if 'nodegroup_id' not in self or self['nodegroup_id'] != nodegroup['nodegroup_id']:
+ raise PLCInvalidArgument, "Node group name already in use"
+
+ return name
+
+ def sync(self, commit=True, validate=True):
+ AlchemyObj.sync(self, commit, validate)
+ if 'nodegroup_id' not in self:
+ AlchemyObj.insert(self, dict(self))
+ else:
+ AlchemyObj.update(self, {'nodegroup_id': self['nodegroup_id']}, dict(self))
+
+ def delete(self, commit=True):
assert 'nodegroup_id' in self
- assert isinstance(node, Node)
- assert 'node_id' in node
+ AlchemyObj.delete(self, dict(self))
- node_id = node['node_id']
- nodegroup_id = self['nodegroup_id']
-
- if node_id in self['node_ids']:
- assert nodegroup_id in node['nodegroup_ids']
-
- self.api.db.do("DELETE FROM nodegroup_node" \
- " WHERE nodegroup_id = %(nodegroup_id)d" \
- " AND node_id = %(node_id)d",
- locals())
-
- if commit:
- self.api.db.commit()
-
- 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):
+class NodeGroups(list):
"""
Representation of row(s) from the nodegroups table in the
database.
"""
- def __init__(self, api, nodegroup_id_or_name_list = None):
- self.api = api
+ def __init__(self, api, nodegroup_filter = None, columns = None):
- sql = "SELECT %s FROM view_nodegroups" % \
- ", ".join(NodeGroup.fields)
-
- if nodegroup_id_or_name_list:
+ if not nodegroup_filter is not None:
+ nodegroups = NodeGroup().select()
+ if isinstance(nodegroup_filter, (list, tuple, set)):
# 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(','))
+ ints = filter(lambda x: isinstance(x, (int, long)), nodegroup_filter)
+ strs = filter(lambda x: isinstance(x, StringTypes), nodegroup_filter)
+ nodegroups = NodeGroup().select(filter={'nodegroup_id': ints, 'groupname': strs})
+ elif isinstance(nodegroup_filter, dict):
+ nodegroups = NodeGroup().select(filter=nodegroup_filter)
+ elif isinstance(nodegroup_filter, (int, long)):
+ nodegroups = NodeGroup().select(filter={'nodegroup_id': nodegroup_filter})
+ elif isinstance(nodegroup_filter, StringTypes):
+ nodegroups = NodeGroup().select(filter={'groupname': nodegroup_filter})
+ else:
+ raise PLCInvalidArgument, "Wrong node group filter %r"%nodegroup_filter
+
+ for nodegroup in nodegroups:
+ self.append(nodegroup)
git://git.onelab.eu / plcapi.git / blobdiff