Statistics
| Branch: | Tag: | Revision:

root / htools / Ganeti / HTools / Program / Hail.hs @ 8b5a517a

History | View | Annotate | Download (2.2 kB)

1
{-| IAllocator plugin for Ganeti.
2

    
3
-}
4

    
5
{-
6

    
7
Copyright (C) 2009, 2010, 2011 Google Inc.
8

    
9
This program is free software; you can redistribute it and/or modify
10
it under the terms of the GNU General Public License as published by
11
the Free Software Foundation; either version 2 of the License, or
12
(at your option) any later version.
13

    
14
This program is distributed in the hope that it will be useful, but
15
WITHOUT ANY WARRANTY; without even the implied warranty of
16
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17
General Public License for more details.
18

    
19
You should have received a copy of the GNU General Public License
20
along with this program; if not, write to the Free Software
21
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22
02110-1301, USA.
23

    
24
-}
25

    
26
module Ganeti.HTools.Program.Hail (main) where
27

    
28
import Control.Monad
29
import Data.Maybe (fromMaybe)
30
import System.Environment (getArgs)
31
import System.IO
32

    
33
import qualified Ganeti.HTools.Cluster as Cluster
34

    
35
import Ganeti.HTools.CLI
36
import Ganeti.HTools.IAlloc
37
import Ganeti.HTools.Loader (Request(..), ClusterData(..))
38
import Ganeti.HTools.ExtLoader (maybeSaveData)
39

    
40
-- | Options list and functions.
41
options :: [OptType]
42
options =
43
  [ oPrintNodes
44
  , oSaveCluster
45
  , oDataFile
46
  , oNodeSim
47
  , oVerbose
48
  , oShowVer
49
  , oShowHelp
50
  ]
51

    
52
-- | Main function.
53
main :: IO ()
54
main = do
55
  cmd_args <- getArgs
56
  (opts, args) <- parseOpts cmd_args "hail" options
57

    
58
  let shownodes = optShowNodes opts
59
      verbose = optVerbose opts
60
      savecluster = optSaveCluster opts
61

    
62
  request <- readRequest opts args
63

    
64
  let Request rq cdata = request
65

    
66
  when (verbose > 1) $
67
       hPutStrLn stderr $ "Received request: " ++ show rq
68

    
69
  when (verbose > 2) $
70
       hPutStrLn stderr $ "Received cluster data: " ++ show cdata
71

    
72
  maybePrintNodes shownodes "Initial cluster"
73
       (Cluster.printNodes (cdNodes cdata))
74

    
75
  maybeSaveData savecluster "pre-ialloc" "before iallocator run" cdata
76

    
77
  let (maybe_ni, resp) = runIAllocator request
78
      (fin_nl, fin_il) = fromMaybe (cdNodes cdata, cdInstances cdata) maybe_ni
79
  putStrLn resp
80

    
81
  maybePrintNodes shownodes "Final cluster" (Cluster.printNodes fin_nl)
82

    
83
  maybeSaveData savecluster "post-ialloc" "after iallocator run"
84
       (cdata { cdNodes = fin_nl, cdInstances = fin_il})