1 {-| IAllocator plugin for Ganeti.
7 Copyright (C) 2009, 2010, 2011 Google Inc.
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.
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.
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
26 module Ganeti.HTools.Program.Hail (main) where
29 import Data.Maybe (fromMaybe)
30 import System.Environment (getArgs)
33 import qualified Ganeti.HTools.Cluster as Cluster
35 import Ganeti.HTools.CLI
36 import Ganeti.HTools.IAlloc
37 import Ganeti.HTools.Loader (Request(..), ClusterData(..))
38 import Ganeti.HTools.ExtLoader (maybeSaveData)
40 -- | Options list and functions.
56 (opts, args) <- parseOpts cmd_args "hail" options
58 let shownodes = optShowNodes opts
59 verbose = optVerbose opts
60 savecluster = optSaveCluster opts
62 request <- readRequest opts args
64 let Request rq cdata = request
67 hPutStrLn stderr $ "Received request: " ++ show rq
70 hPutStrLn stderr $ "Received cluster data: " ++ show cdata
72 maybePrintNodes shownodes "Initial cluster"
73 (Cluster.printNodes (cdNodes cdata))
75 maybeSaveData savecluster "pre-ialloc" "before iallocator run" cdata
77 let (maybe_ni, resp) = runIAllocator request
78 (fin_nl, fin_il) = fromMaybe (cdNodes cdata, cdInstances cdata) maybe_ni
81 maybePrintNodes shownodes "Final cluster" (Cluster.printNodes fin_nl)
83 maybeSaveData savecluster "post-ialloc" "after iallocator run"
84 (cdata { cdNodes = fin_nl, cdInstances = fin_il})