2 # Functions for interacting with the boot_states table in the database
4 # Mark Huang <mlhuang@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
7 # $Id: BootStates.py,v 1.1 2006/10/10 20:24:06 mlhuang Exp $
10 from PLC.Faults import *
11 from PLC.Parameter import Parameter
12 from PLC.Table import Row, Table
16 Representation of a row in the boot_states table. To use,
17 instantiate with a dict of values.
20 table_name = 'boot_states'
21 primary_key = 'boot_state'
23 'boot_state': Parameter(str, "Boot state", max = 20),
26 def __init__(self, api, fields = {}):
27 Row.__init__(self, fields)
30 def validate_boot_state(self, name):
31 # Remove leading and trailing spaces
34 # Make sure name is not blank after we removed the spaces
36 raise PLCInvalidArgument, "Boot state must be specified"
38 # Make sure boot state does not alredy exist
39 conflicts = BootStates(self.api, [name])
41 raise PLCInvalidArgument, "Boot state name already in use"
45 def delete(self, commit = True):
46 assert 'boot_state' in self
48 # Clean up miscellaneous join tables
49 for table in ['nodes', 'boot_states']:
50 self.api.db.do("DELETE FROM " + table + \
51 " WHERE boot_state = %(boot_state)s",
57 class BootStates(Table):
59 Representation of the boot_states table in the database.
62 def __init__(self, api, names = None):
63 sql = "SELECT %s FROM boot_states" % \
64 ", ".join(BootState.fields)
67 # Separate the list into integers and strings
68 sql += " WHERE boot_state IN (%s)" % ", ".join(api.db.quote(names))
70 rows = api.db.selectall(sql)
73 self[row['boot_state']] = BootState(api, row)