root / Ganeti / HTools / Instance.hs @ e2fa2baf
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{-| Module describing an instance. |
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|
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The instance data type holds very few fields, the algorithm |
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intelligence is in the "Node" and "Cluster" modules. |
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-} |
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{- |
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Copyright (C) 2009 Google Inc. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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02110-1301, USA. |
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-} |
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module Ganeti.HTools.Instance where |
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import qualified Ganeti.HTools.Types as T |
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import qualified Ganeti.HTools.Container as Container |
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-- * Type declarations |
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-- | The instance type |
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data Instance = Instance { name :: String -- ^ The instance name |
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, mem :: Int -- ^ Memory of the instance |
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, dsk :: Int -- ^ Disk size of instance |
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, running :: Bool -- ^ Whether the instance |
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-- is running |
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, run_st :: String -- ^ Original (text) run status |
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, pnode :: T.Ndx -- ^ Original primary node |
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, snode :: T.Ndx -- ^ Original secondary node |
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, idx :: T.Idx -- ^ Internal index for |
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-- book-keeping |
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} deriving (Show) |
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instance T.Element Instance where |
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nameOf = name |
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idxOf = idx |
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setName = setName |
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setIdx = setIdx |
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-- | A simple name for the int, instance association list. |
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type AssocList = [(T.Idx, Instance)] |
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-- | A simple name for an instance map. |
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type List = Container.Container Instance |
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-- * Initialization |
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-- | Create an instance. |
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-- |
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-- Some parameters are not initialized by function, and must be set |
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-- later (via 'setIdx' for example). |
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create :: String -> Int -> Int -> String -> T.Ndx -> T.Ndx -> Instance |
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create name_init mem_init dsk_init run_init pn sn = |
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Instance { |
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name = name_init, |
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mem = mem_init, |
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dsk = dsk_init, |
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running = case run_init of |
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"running" -> True |
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"ERROR_up" -> True |
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_ -> False, |
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run_st = run_init, |
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pnode = pn, |
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snode = sn, |
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idx = -1 |
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} |
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-- | Changes the index. |
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-- |
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-- This is used only during the building of the data structures. |
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setIdx :: Instance -- ^ the original instance |
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-> T.Idx -- ^ new index |
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-> Instance -- ^ the modified instance |
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setIdx t i = t { idx = i } |
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-- | Changes the name. |
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-- |
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-- This is used only during the building of the data structures. |
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setName :: Instance -- ^ The original instance |
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-> String -- ^ New name |
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-> Instance |
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setName t s = t { name = s } |
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-- * Update functions |
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-- | Changes the primary node of the instance. |
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setPri :: Instance -- ^ the original instance |
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-> T.Ndx -- ^ the new primary node |
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-> Instance -- ^ the modified instance |
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setPri t p = t { pnode = p } |
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-- | Changes the secondary node of the instance. |
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setSec :: Instance -- ^ the original instance |
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-> T.Ndx -- ^ the new secondary node |
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-> Instance -- ^ the modified instance |
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setSec t s = t { snode = s } |
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-- | Changes both nodes of the instance. |
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setBoth :: Instance -- ^ the original instance |
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-> T.Ndx -- ^ new primary node index |
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-> T.Ndx -- ^ new secondary node index |
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-> Instance -- ^ the modified instance |
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setBoth t p s = t { pnode = p, snode = s } |