# Mark Huang <mlhuang@cs.princeton.edu>
# Copyright (C) 2006 The Trustees of Princeton University
#
-# $Id$
-#
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.Interfaces import valid_ip, Interface, Interfaces
+from PLC.Nodes import Node, Nodes
class PCU(Row):
"""
- Representation of a row in the pcu table. To use,
+ Representation of a row in the pcus table. To use,
instantiate with a dict of values.
"""
+ table_name = 'pcus'
+ primary_key = 'pcu_id'
+ join_tables = ['pcu_node']
fields = {
- 'pcu_id': Parameter(int, "Node group identifier"),
- 'hostname': Parameter(str, "Fully qualified hostname"),
- }
-
- # These fields are derived from join tables and are not
- # actually in the pcu table.
- join_fields = {
+ 'pcu_id': Parameter(int, "PCU identifier"),
+ 'site_id': Parameter(int, "Identifier of site where PCU is located"),
+ 'hostname': Parameter(str, "PCU hostname", max = 254),
+ 'ip': Parameter(str, "PCU IP address", max = 254),
+ 'protocol': Parameter(str, "PCU protocol, e.g. ssh, https, telnet", max = 16, nullok = True),
+ 'username': Parameter(str, "PCU username", max = 254, nullok = True),
+ 'password': Parameter(str, "PCU username", max = 254, nullok = True),
+ 'notes': Parameter(str, "Miscellaneous notes", max = 254, nullok = True),
+ 'model': Parameter(str, "PCU model string", max = 32, nullok = True),
'node_ids': Parameter([int], "List of nodes that this PCU controls"),
+ 'ports': Parameter([int], "List of the port numbers that each node is connected to"),
+ 'last_updated': Parameter(int, "Date and time when node entry was created", ro = True),
}
- def __init__(self, api, fields):
- Row.__init__(self, fields)
- self.api = api
+ def validate_ip(self, ip):
+ if not valid_ip(ip):
+ raise PLCInvalidArgument, "Invalid IP address " + ip
+ return ip
- def flush(self, commit = True):
+ validate_last_updated = Row.validate_timestamp
+
+ def update_timestamp(self, col_name, commit = True):
"""
- Commit changes back to the database.
+ Update col_name field with current time
"""
- self.validate()
-
- # Fetch a new pcu_id if necessary
- if 'pcu_id' not in self:
- rows = self.api.db.selectall("SELECT NEXTVAL('pcu_pcu_id_seq') AS pcu_id")
- if not rows:
- raise PLCDBError, "Unable to fetch new pcu_id"
- self['pcu_id'] = rows[0]['pcu_id']
- insert = True
- else:
- insert = False
-
- # Filter out unknown fields
- fields = dict(filter(lambda (key, value): key in self.fields,
- self.items()))
-
- # Parameterize for safety
- keys = fields.keys()
- values = [self.api.db.param(key, value) for (key, value) in fields.items()]
-
- if insert:
- # Insert new row in pcu table
- sql = "INSERT INTO pcu (%s) VALUES (%s)" % \
- (", ".join(keys), ", ".join(values))
- else:
- # Update existing row in sites table
- columns = ["%s = %s" % (key, value) for (key, value) in zip(keys, values)]
- sql = "UPDATE pcu SET " + \
- ", ".join(columns) + \
- " WHERE pcu_id = %(pcu_id)d"
-
- self.api.db.do(sql, fields)
-
- if commit:
- self.api.db.commit()
-
- def delete(self, commit = True):
+ assert 'pcu_id' in self
+ assert self.table_name
+
+ self.api.db.do("UPDATE %s SET %s = CURRENT_TIMESTAMP " % (self.table_name, col_name) + \
+ " where pcu_id = %d" % (self['pcu_id']) )
+ self.sync(commit)
+
+ def update_last_updated(self, commit = True):
+ self.update_timestamp('last_updated', commit)
+
+ def add_node(self, node, port, commit = True):
"""
- Delete existing PCU.
+ Add node to existing PCU.
"""
assert 'pcu_id' in self
+ assert isinstance(node, Node)
+ assert isinstance(port, (int, long))
+ assert 'node_id' in node
+
+ pcu_id = self['pcu_id']
+ node_id = node['node_id']
- # Delete ourself
- for table in ['pcu_ports', 'pcu']:
- self.api.db.do("DELETE FROM %s" \
- " WHERE nodenetwork_id = %(pcu_id)" % \
- table, self)
+ if node_id not in self['node_ids'] and port not in self['ports']:
+ self.api.db.do("INSERT INTO pcu_node (pcu_id, node_id, port)" \
+ " VALUES(%(pcu_id)d, %(node_id)d, %(port)d)",
+ locals())
- if commit:
- self.api.db.commit()
+ if commit:
+ self.api.db.commit()
+
+ self['node_ids'].append(node_id)
+ self['ports'].append(port)
+
+ def remove_node(self, node, commit = True):
+ """
+ Remove node from existing PCU.
+ """
+
+ assert 'pcu_id' in self
+ assert isinstance(node, Node)
+ assert 'node_id' in node
+
+ pcu_id = self['pcu_id']
+ node_id = node['node_id']
+
+ if node_id in self['node_ids']:
+ i = self['node_ids'].index(node_id)
+ port = self['ports'][i]
+
+ self.api.db.do("DELETE FROM pcu_node" \
+ " WHERE pcu_id = %(pcu_id)d" \
+ " AND node_id = %(node_id)d",
+ locals())
+
+ if commit:
+ self.api.db.commit()
+
+ self['node_ids'].remove(node_id)
+ self['ports'].remove(port)
class PCUs(Table):
"""
- Representation of row(s) from the pcu table in the
+ Representation of row(s) from the pcus table in the
database.
"""
- def __init__(self, api, pcu_id_or_hostname_list = None):
- self.api = api
-
- # N.B.: Node IDs returned may be deleted.
- sql = "SELECT pcu.*, pcu_ports.node_id" \
- " FROM pcu" \
- " LEFT JOIN pcu_ports USING (pcu_id)"
-
- if pcu_id_or_hostname_list:
- # Separate the list into integers and strings
- pcu_ids = filter(lambda pcu_id: isinstance(pcu_id, (int, long)),
- pcu_id_or_hostname_list)
- hostnames = filter(lambda hostname: isinstance(hostname, StringTypes),
- pcu_id_or_hostname_list)
- sql += " AND (False"
- if pcu_ids:
- sql += " OR pcu_id IN (%s)" % ", ".join(map(str, pcu_ids))
- if hostnames:
- sql += " OR hostname IN (%s)" % ", ".join(api.db.quote(hostnames)).lower()
- sql += ")"
-
- rows = self.api.db.selectall(sql, locals())
- for row in rows:
- if self.has_key(row['pcu_id']):
- pcu = self[row['pcu_id']]
- pcu.update(row)
+ def __init__(self, api, pcu_filter = None, columns = None):
+ Table.__init__(self, api, PCU, columns)
+
+ sql = "SELECT %s FROM view_pcus WHERE True" % \
+ ", ".join(self.columns)
+
+ if pcu_filter is not None:
+ if isinstance(pcu_filter, (list, tuple, set, int, long)):
+ pcu_filter = Filter(PCU.fields, {'pcu_id': pcu_filter})
+ elif isinstance(pcu_filter, dict):
+ pcu_filter = Filter(PCU.fields, pcu_filter)
else:
- self[row['pcu_id']] = PCU(api, row)
+ raise PLCInvalidArgument, "Wrong pcu filter %r"%pcu_filter
+ sql += " AND (%s) %s" % pcu_filter.sql(api)
+
+ self.selectall(sql)
git://git.onelab.eu / plcapi.git / blobdiff