1 {-| Implementation of the Ganeti Query2 basic types.
3 These are types internal to the library, and for example clients that
4 use the library should not need to import it.
10 Copyright (C) 2012 Google Inc.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
29 module Ganeti.Query.Types where
31 import qualified Data.Map as Map
36 -- | The type of field getters. The \"a\" type represents the type
37 -- we're querying, whereas the \"b\" type represents the \'runtime\'
38 -- data for that type (if any). Note that we don't support multiple
39 -- runtime sources, and we always consider the entire configuration as
40 -- a given (so no equivalent for Python's /*_CONFIG/ and /*_GROUP/;
41 -- configuration accesses are cheap for us).
42 data FieldGetter a b = FieldSimple (a -> ResultEntry)
43 | FieldRuntime (b -> a -> ResultEntry)
44 | FieldConfig (ConfigData -> a -> ResultEntry)
47 -- | Alias for a field data (definition and getter).
48 type FieldData a b = (FieldDefinition, FieldGetter a b)
50 -- | Alias for a field data list.
51 type FieldList a b = [FieldData a b]
53 -- | Alias for field maps.
54 type FieldMap a b = Map.Map String (FieldData a b)