root / htools / Ganeti / HTools / Group.hs @ 7da760ca
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1 | 0dc1bf87 | Iustin Pop | {-| Module describing a node group. |
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2 | 0dc1bf87 | Iustin Pop | |
3 | 0dc1bf87 | Iustin Pop | -} |
4 | 0dc1bf87 | Iustin Pop | |
5 | 0dc1bf87 | Iustin Pop | {- |
6 | 0dc1bf87 | Iustin Pop | |
7 | 0ec6344e | Iustin Pop | Copyright (C) 2010, 2011 Google Inc. |
8 | 0dc1bf87 | Iustin Pop | |
9 | 0dc1bf87 | Iustin Pop | This program is free software; you can redistribute it and/or modify |
10 | 0dc1bf87 | Iustin Pop | it under the terms of the GNU General Public License as published by |
11 | 0dc1bf87 | Iustin Pop | the Free Software Foundation; either version 2 of the License, or |
12 | 0dc1bf87 | Iustin Pop | (at your option) any later version. |
13 | 0dc1bf87 | Iustin Pop | |
14 | 0dc1bf87 | Iustin Pop | This program is distributed in the hope that it will be useful, but |
15 | 0dc1bf87 | Iustin Pop | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | 0dc1bf87 | Iustin Pop | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | 0dc1bf87 | Iustin Pop | General Public License for more details. |
18 | 0dc1bf87 | Iustin Pop | |
19 | 0dc1bf87 | Iustin Pop | You should have received a copy of the GNU General Public License |
20 | 0dc1bf87 | Iustin Pop | along with this program; if not, write to the Free Software |
21 | 0dc1bf87 | Iustin Pop | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
22 | 0dc1bf87 | Iustin Pop | 02110-1301, USA. |
23 | 0dc1bf87 | Iustin Pop | |
24 | 0dc1bf87 | Iustin Pop | -} |
25 | 0dc1bf87 | Iustin Pop | |
26 | 0dc1bf87 | Iustin Pop | module Ganeti.HTools.Group |
27 | ebf38064 | Iustin Pop | ( Group(..) |
28 | ebf38064 | Iustin Pop | , List |
29 | ebf38064 | Iustin Pop | , AssocList |
30 | ebf38064 | Iustin Pop | -- * Constructor |
31 | ebf38064 | Iustin Pop | , create |
32 | ebf38064 | Iustin Pop | , setIdx |
33 | ebf38064 | Iustin Pop | , isAllocable |
34 | ebf38064 | Iustin Pop | ) where |
35 | 0dc1bf87 | Iustin Pop | |
36 | 0dc1bf87 | Iustin Pop | import qualified Ganeti.HTools.Container as Container |
37 | 0dc1bf87 | Iustin Pop | |
38 | 0dc1bf87 | Iustin Pop | import qualified Ganeti.HTools.Types as T |
39 | 0dc1bf87 | Iustin Pop | |
40 | 0dc1bf87 | Iustin Pop | -- * Type declarations |
41 | 0dc1bf87 | Iustin Pop | |
42 | 0dc1bf87 | Iustin Pop | -- | The node group type. |
43 | 0dc1bf87 | Iustin Pop | data Group = Group |
44 | ebf38064 | Iustin Pop | { name :: String -- ^ The node name |
45 | ebf38064 | Iustin Pop | , uuid :: T.GroupID -- ^ The UUID of the group |
46 | ebf38064 | Iustin Pop | , idx :: T.Gdx -- ^ Internal index for book-keeping |
47 | ebf38064 | Iustin Pop | , allocPolicy :: T.AllocPolicy -- ^ The allocation policy for this group |
48 | ebf38064 | Iustin Pop | } deriving (Show, Read, Eq) |
49 | 0dc1bf87 | Iustin Pop | |
50 | 0dc1bf87 | Iustin Pop | -- Note: we use the name as the alias, and the UUID as the official |
51 | 0dc1bf87 | Iustin Pop | -- name |
52 | 0dc1bf87 | Iustin Pop | instance T.Element Group where |
53 | ebf38064 | Iustin Pop | nameOf = uuid |
54 | ebf38064 | Iustin Pop | idxOf = idx |
55 | ebf38064 | Iustin Pop | setAlias = setName |
56 | ebf38064 | Iustin Pop | setIdx = setIdx |
57 | ebf38064 | Iustin Pop | allNames n = [name n, uuid n] |
58 | 0dc1bf87 | Iustin Pop | |
59 | 0dc1bf87 | Iustin Pop | -- | A simple name for the int, node association list. |
60 | 0dc1bf87 | Iustin Pop | type AssocList = [(T.Gdx, Group)] |
61 | 0dc1bf87 | Iustin Pop | |
62 | 0dc1bf87 | Iustin Pop | -- | A simple name for a node map. |
63 | 0dc1bf87 | Iustin Pop | type List = Container.Container Group |
64 | 0dc1bf87 | Iustin Pop | |
65 | 0dc1bf87 | Iustin Pop | -- * Initialization functions |
66 | 0dc1bf87 | Iustin Pop | |
67 | 0dc1bf87 | Iustin Pop | -- | Create a new group. |
68 | 0dc1bf87 | Iustin Pop | create :: String -> T.GroupID -> T.AllocPolicy -> Group |
69 | 0dc1bf87 | Iustin Pop | create name_init id_init apol_init = |
70 | ebf38064 | Iustin Pop | Group { name = name_init |
71 | ebf38064 | Iustin Pop | , uuid = id_init |
72 | ebf38064 | Iustin Pop | , allocPolicy = apol_init |
73 | ebf38064 | Iustin Pop | , idx = -1 |
74 | ebf38064 | Iustin Pop | } |
75 | 0dc1bf87 | Iustin Pop | |
76 | 179c0828 | Iustin Pop | -- | Sets the group index. |
77 | 179c0828 | Iustin Pop | -- |
78 | 0dc1bf87 | Iustin Pop | -- This is used only during the building of the data structures. |
79 | 0dc1bf87 | Iustin Pop | setIdx :: Group -> T.Gdx -> Group |
80 | 0dc1bf87 | Iustin Pop | setIdx t i = t {idx = i} |
81 | 0dc1bf87 | Iustin Pop | |
82 | 0dc1bf87 | Iustin Pop | -- | Changes the alias. |
83 | 0dc1bf87 | Iustin Pop | -- |
84 | 0dc1bf87 | Iustin Pop | -- This is used only during the building of the data structures. |
85 | 0dc1bf87 | Iustin Pop | setName :: Group -> String -> Group |
86 | 0dc1bf87 | Iustin Pop | setName t s = t { name = s } |
87 | 0ec6344e | Iustin Pop | |
88 | 0ec6344e | Iustin Pop | -- | Checks if a group is allocable. |
89 | 0ec6344e | Iustin Pop | isAllocable :: Group -> Bool |
90 | 0ec6344e | Iustin Pop | isAllocable = (/= T.AllocUnallocable) . allocPolicy |