1 {-| Parsing data from a simulated description of the cluster
3 This module holds the code for parsing a cluster description.
9 Copyright (C) 2009 Google Inc.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
28 module Ganeti.HTools.Simu
33 import Text.Printf (printf)
35 import Ganeti.HTools.Utils
36 import Ganeti.HTools.Types
37 import qualified Ganeti.HTools.Node as Node
38 import qualified Ganeti.HTools.Instance as Instance
40 -- | Parse the string description into nodes
41 parseDesc :: String -> Result (Int, Int, Int, Int)
43 case sepSplit ',' desc of
45 ncount <- tryRead "node count" n
46 disk <- tryRead "disk size" d
47 mem <- tryRead "memory size" m
48 cpu <- tryRead "cpu count" c
49 return (ncount, disk, mem, cpu)
50 _ -> fail "Invalid cluster specification"
52 -- | Builds the cluster data from node\/instance files.
53 loadData :: String -- ^ Cluster description in text format
54 -> IO (Result (Node.AssocList, Instance.AssocList, [String]))
55 loadData ndata = -- IO monad, just for consistency with the other loaders
57 (cnt, disk, mem, cpu) <- parseDesc ndata
58 let nodes = map (\idx ->
59 let n = Node.create (printf "node%03d" idx)
60 (fromIntegral mem) 0 mem
61 (fromIntegral disk) disk
62 (fromIntegral cpu) False
63 in (idx, Node.setIdx n idx)
65 return (nodes, [], [])