3 {-| Scan clusters via RAPI or LUXI and write state data files.
9 Copyright (C) 2009, 2010 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 Main (main) where
30 import Data.Maybe (isJust, fromJust, fromMaybe)
32 import System (exitWith, ExitCode(..))
34 import System.FilePath
35 import qualified System
37 import Text.Printf (printf)
39 import qualified Ganeti.HTools.Container as Container
40 import qualified Ganeti.HTools.Cluster as Cluster
41 import qualified Ganeti.HTools.Node as Node
42 import qualified Ganeti.HTools.Instance as Instance
44 import qualified Ganeti.HTools.Rapi as Rapi
46 import qualified Ganeti.HTools.Luxi as Luxi
47 import qualified Ganeti.HTools.Loader as Loader
48 import Ganeti.HTools.Text (serializeCluster)
50 import Ganeti.HTools.CLI
51 import Ganeti.HTools.Types
53 -- | Options list and functions
65 -- | Return a one-line summary of cluster state
66 printCluster :: Node.List -> Instance.List
69 let (bad_nodes, bad_instances) = Cluster.computeBadItems nl il
70 ccv = Cluster.compCV nl
71 nodes = Container.elems nl
72 insts = Container.elems il
73 t_ram = sum . map Node.tMem $ nodes
74 t_dsk = sum . map Node.tDsk $ nodes
75 f_ram = sum . map Node.fMem $ nodes
76 f_dsk = sum . map Node.fDsk $ nodes
78 printf "%5d %5d %5d %5d %6.0f %6d %6.0f %6d %.8f"
79 (length nodes) (length insts)
80 (length bad_nodes) (length bad_instances)
82 (t_dsk / 1024) (f_dsk `div` 1024)
86 -- | Replace slashes with underscore for saving to filesystem
87 fixSlash :: String -> String
88 fixSlash = map (\x -> if x == '/' then '_' else x)
91 -- | Generates serialized data from loader input
92 processData :: Result (Node.AssocList, Instance.AssocList, [String])
93 -> Result (Node.List, Instance.List, String)
94 processData input_data = do
95 (nl, il, _) <- input_data >>= Loader.mergeData [] [] []
96 let (_, fix_nl) = Loader.checkData nl il
97 adata = serializeCluster nl il
98 return (fix_nl, il, adata)
100 -- | Writes cluster data out
104 -> Result (Node.List, Instance.List, String)
106 writeData _ name _ (Bad err) =
107 printf "\nError for %s: failed to load data. Details:\n%s\n" name err >>
110 writeData nlen name opts (Ok (nl, il, adata)) = do
111 printf "%-*s " nlen name :: IO ()
113 let shownodes = optShowNodes opts
114 odir = optOutPath opts
115 oname = odir </> fixSlash name
116 putStrLn $ printCluster nl il
118 when (isJust shownodes) $
119 putStr $ Cluster.printNodes nl (fromJust shownodes)
120 writeFile (oname <.> "data") adata
126 cmd_args <- System.getArgs
127 (opts, clusters) <- parseOpts cmd_args "hscan" options
130 let nlen = if null clusters
132 else maximum . map length $ clusters
134 unless (optNoHeaders opts) $
135 printf "%-*s %5s %5s %5s %5s %6s %6s %6s %6s %10s\n" nlen
136 "Name" "Nodes" "Inst" "BNode" "BInst" "t_mem" "f_mem"
137 "t_disk" "f_disk" "Score"
139 when (null clusters) $ do
140 let lsock = fromMaybe defaultLuxiSocket (optLuxi opts)
142 input_data <- Luxi.loadData lsock
143 result <- writeData nlen name opts (processData input_data)
144 when (not result) $ exitWith $ ExitFailure 2
147 results <- mapM (\ name ->
149 input_data <- Rapi.loadData name
150 writeData nlen name opts (processData input_data)
152 when (not $ all id results) $ exitWith (ExitFailure 2)
154 when (not $ null clusters) $ do
155 putStrLn "RAPI/curl backend disabled at compile time, cannot scan clusters"
156 exitWith $ ExitFailure 1