1 {-| Scan clusters via RAPI and write instance/node data files.
7 Copyright (C) 2009 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 Main (main) where
33 import System.FilePath
34 import System.Console.GetOpt
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
43 import qualified Ganeti.HTools.CLI as CLI
44 import qualified Ganeti.HTools.Rapi as Rapi
45 import qualified Ganeti.HTools.Loader as Loader
46 import Ganeti.HTools.Types
48 -- | Command line options structure.
49 data Options = Options
50 { optShowNodes :: Bool -- ^ Whether to show node status
51 , optOutPath :: FilePath -- ^ Path to the output directory
52 , optVerbose :: Int -- ^ Verbosity level
53 , optNoHeader :: Bool -- ^ Do not show a header line
54 , optShowVer :: Bool -- ^ Just show the program version
55 , optShowHelp :: Bool -- ^ Just show the help
58 instance CLI.CLIOptions Options where
59 showVersion = optShowVer
60 showHelp = optShowHelp
62 -- | Default values for the command line options.
63 defaultOptions :: Options
64 defaultOptions = Options
65 { optShowNodes = False
73 -- | Options list and functions
74 options :: [OptDescr (Options -> Options)]
76 [ Option ['p'] ["print-nodes"]
77 (NoArg (\ opts -> opts { optShowNodes = True }))
78 "print the final node list"
79 , Option ['d'] ["output-dir"]
80 (ReqArg (\ d opts -> opts { optOutPath = d }) "PATH")
81 "directory in which to write output files"
82 , Option ['v'] ["verbose"]
83 (NoArg (\ opts -> opts { optVerbose = (optVerbose opts) + 1 }))
84 "increase the verbosity level"
85 , Option [] ["no-headers"]
86 (NoArg (\ opts -> opts { optNoHeader = True }))
87 "do not show a header line"
88 , Option ['V'] ["version"]
89 (NoArg (\ opts -> opts { optShowVer = True}))
90 "show the version of the program"
91 , Option ['h'] ["help"]
92 (NoArg (\ opts -> opts { optShowHelp = True}))
96 -- | Generate node file data from node objects
97 serializeNodes :: Node.List -> String -> String
98 serializeNodes nl csf =
99 let nodes = Container.elems nl
102 let name = Node.name node ++ csf
103 t_mem = (truncate $ Node.t_mem node)::Int
104 t_dsk = (truncate $ Node.t_dsk node)::Int
106 printf "%s|%d|%d|%d|%d|%d|%c" name
107 t_mem (Node.n_mem node) (Node.f_mem node)
108 t_dsk (Node.f_dsk node)
109 (if Node.offline node then 'Y' else 'N')
114 -- | Generate instance file data from instance objects
115 serializeInstances :: Node.List -> Instance.List
117 serializeInstances nl il csf =
118 let instances = Container.elems il
122 iname = Instance.name inst ++ csf
123 pnode = Container.nameOf nl $ Instance.pnode inst
124 snode = Container.nameOf nl $ Instance.snode inst
126 printf "%s|%d|%d|%s|%s|%s"
127 iname (Instance.mem inst) (Instance.dsk inst)
128 (Instance.run_st inst)
134 -- | Return a one-line summary of cluster state
135 printCluster :: Node.List -> Instance.List
138 let (bad_nodes, bad_instances) = Cluster.computeBadItems nl il
139 ccv = Cluster.compCV nl
140 nodes = Container.elems nl
141 insts = Container.elems il
142 t_ram = truncate . sum . map Node.t_mem $ nodes
143 t_dsk = truncate . sum . map Node.t_dsk $ nodes
144 f_ram = sum . map Node.f_mem $ nodes
145 f_dsk = sum . map Node.f_dsk $ nodes
147 printf "%5d %5d %5d %5d %6d %6d %6d %6d %.8f"
148 (length nodes) (length insts)
149 (length bad_nodes) (length bad_instances)
150 (t_ram::Integer) f_ram
151 ((t_dsk::Integer) `div` 1024) (f_dsk `div` 1024)
155 -- | Replace slashes with underscore for saving to filesystem
157 fixSlash :: String -> String
158 fixSlash = map (\x -> if x == '/' then '_' else x)
163 cmd_args <- System.getArgs
164 (opts, clusters) <- CLI.parseOpts cmd_args "hscan" options
167 let odir = optOutPath opts
168 nlen = maximum . map length $ clusters
170 unless (optNoHeader opts) $
171 printf "%-*s %5s %5s %5s %5s %6s %6s %6s %6s %10s\n" nlen
172 "Name" "Nodes" "Inst" "BNode" "BInst" "t_mem" "f_mem"
173 "t_disk" "f_disk" "Score"
177 printf "%-*s " nlen name
179 input_data <- Rapi.loadData name
180 let ldresult = input_data >>= Loader.mergeData
182 Bad err -> printf "\nError: failed to load data. \
185 let (nl, il, csf) = x
186 (_, fix_nl) = Loader.checkData nl il
187 putStrLn $ printCluster fix_nl il
188 when (optShowNodes opts) $ do
189 putStr $ Cluster.printNodes fix_nl
190 let ndata = serializeNodes nl csf
191 idata = serializeInstances nl il csf
192 oname = odir </> (fixSlash name)
193 writeFile (oname <.> "nodes") ndata
194 writeFile (oname <.> "instances") idata)