2 # Functions for interacting with the initscripts table in the database
4 # Tony Mack <tmack@cs.princeton.edu>
5 # Copyright (C) 2006 The Trustees of Princeton University
8 from types import StringTypes
9 from PLC.Faults import *
10 from PLC.Parameter import Parameter
11 from PLC.Filter import Filter
12 from PLC.Table import Row, Table
14 class InitScript(Row):
16 Representation of a row in the initscripts table. To use,
17 instantiate with a dict of values.
20 table_name = 'initscripts'
21 primary_key = 'initscript_id'
24 'initscript_id': Parameter(int, "Initscript identifier"),
25 'name': Parameter(str, "Initscript name", max = 254),
26 'enabled': Parameter(bool, "Initscript is active"),
27 'script': Parameter(str, "Initscript"),
30 def validate_name(self, name):
32 validates the script name
35 conflicts = InitScripts(self.api, [name])
36 for initscript in conflicts:
37 if 'initscript_id' not in self or self['initscript_id'] != initscript['initscript_id']:
38 raise PLCInvalidArgument, "Initscript name already in use"
43 class InitScripts(Table):
45 Representation of the initscripts table in the database.
48 def __init__(self, api, initscript_filter = None, columns = None):
49 Table.__init__(self, api, InitScript, columns)
51 sql = "SELECT %s FROM initscripts WHERE True" % \
52 ", ".join(self.columns)
54 if initscript_filter is not None:
55 if isinstance(initscript_filter, (list, tuple, set)):
56 # Separate the list into integers and strings
57 ints = filter(lambda x: isinstance(x, (int, long)), initscript_filter)
58 strs = filter(lambda x: isinstance(x, StringTypes), initscript_filter)
59 initscript_filter = Filter(InitScript.fields, {'initscript_id': ints, 'name': strs })
60 sql += " AND (%s) %s" % initscript_filter.sql(api, "OR")
61 elif isinstance(initscript_filter, dict):
62 initscript_filter = Filter(InitScript.fields, initscript_filter)
63 sql += " AND (%s) %s" % initscript_filter.sql(api, "AND")
64 elif isinstance(initscript_filter, (int, long)):
65 initscript_filter = Filter(InitScript.fields, {'initscript_id': initscript_filter})
66 sql += " AND (%s) %s" % initscript_filter.sql(api, "AND")
67 elif isinstance(initscript_filter, StringTypes):
68 initscript_filter = Filter(InitScript.fields, {'name': initscript_filter})
69 sql += " AND (%s) %s" % initscript_filter.sql(api, "AND")
71 raise PLCInvalidArgument, "Wrong initscript filter %r"%initscript_filter